Edgar Filing: BLACKROCK MUNI INTERMEDIATE DURATION FUND INC

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-CSRS

CERTIFIED SHAREHOLDER REPORT OF REGISTERED MANAGEMENT INVESTMENT COMPANIES

Investment Company Act file number 811-21348

Name of Fund: BlackRock Muni Intermediate Duration Fund, Inc. (MUI)

Fund Address: 100 Bellevue Parkway, Wilmington, DE 19809

Name and address of agent for service: Anne F. Ackerley, Chief Executive Officer, BlackRock Muni Intermediate Duration Fund, Inc., 55 East 52^nd Street, New York, NY 10055

Registrant’s telephone number, including area code: (800) 882-0052, Option 4

Date of fiscal year end: 04/30/2011

Date of reporting period: 10/31/2010

Item 1 – Report to Stockholders


	October 31, 2010

Semi-Annual Report (Unaudited)

BlackRock Apex Municipal Fund, Inc. (APX)

BlackRock MuniAssets Fund, Inc. (MUA)

BlackRock MuniEnhanced Fund, Inc. (MEN)

BlackRock MuniHoldings Fund, Inc. (MHD)

BlackRock MuniHoldings Fund II, Inc. (MUH)

BlackRock MuniHoldings Quality Fund, Inc. (MUS)

BlackRock Muni Intermediate Duration Fund, Inc. (MUI)

BlackRock MuniVest Fund II, Inc. (MVT)

Not FDIC Insured • No Bank Guarantee • May Lose Value




Table of Contents


		Page


Dear Shareholder		3
Semi-Annual Report:
Fund Summaries		4
The Benefits and Risks of Leveraging		12
Derivative Financial Instruments		12
Financial Statements:
Schedules of Investments		13
Statements of Assets and Liabilities		52
Statements of Operations		54
Statements of Changes in Net Assets		55
Statements of Cash Flows		58
Financial Highlights		59
Notes to Financial Statements		67
Disclosure of Investment Advisory Agreements and Sub-Advisory Agreements		74
Officers and Directors		78
Additional Information		79



2	SEMI-ANNUAL REPORT	OCTOBER 31, 2010

Dear Shareholder

The global economic recovery that began in 2009 has continued on its choppy course this year, delivering mixed but slowly improving economic data and gradual if uneven improvement of investor sentiment. The risks of a double-dip recession continue to recede, but the economy remains mired in a slow-growth environment. In the United States, the National Bureau of Economic Research declared that the “Great Recession” ended in June 2009. Spanning December 2007 to June 2009, this marked the longest reported recession since the Great Depression. Structural problems of ongoing deleveraging and weak spending among businesses and households weigh heavily on the pace of economic growth. The unemployment rate remains stubbornly high in the face of sluggish job gains in the private sector. The US dollar, along with other developed market currencies, has experienced devaluation resulting from aggressively easy monetary and fiscal policies. Given these long-standing conditions, the Federal Reserve Board has announced that additional policy action will be taken to combat deflation and unemployment and promote economic growth.

The high levels of volatility experienced in global equity markets throughout 2009 continued into 2010 as mixed economic data and lingering credit issues caused stocks to trade in both directions, but by the end of the first quarter, most markets had managed to post gains. The second quarter, in contrast, brought higher levels of volatility and a “flight to quality” as investor sentiment was dominated by fears of a double-dip recession. Global equity markets saw negative quarterly returns — and for many markets, the first significant downturn since the bull market began in March 2009. In the third quarter, economic data turned less negative and strong corporate earnings reports became increasingly consistent. These factors, along with attractive valuations and expectations for additional quantitative easing, drove equity markets higher, with most markets recapturing their second quarter losses. Stocks continued their rally into the beginning of the fourth quarter, closing out the 12-month period in positive territory. International equities posted gains on both a six- and 12-month basis. In the United States, both large and small cap equities posted robust gains for the 12-month period, while on a six-month basis, large cap stocks remained relatively flat and small caps turned slightly negative.

In fixed income markets, yields fluctuated but declined significantly over the past 12 months amid heightened uncertainty. Weak economic data, lingering credit problems and, near the end of the period, the expectation of additional quantitative easing drove interest rates lower and bond prices higher. Treasuries rallied over the period, modestly outperforming the credit spread sectors of the market. Corporate credit spreads benefited from the low interest rate environment and high yield fixed income became increasingly attractive due to declining default rates and better-than-expected results on European bank stress tests. Tax-exempt municipal bonds performed well over the 12-month period, driven primarily by technical factors including favorable supply-and-demand dynamics.

Cash investments, as represented by the 3-month Treasury bill, returned only a fraction over 0% for the 12-month period as short-term interest rates remained low. Yields on money market securities remain near all-time lows.

Against this backdrop, the major market averages posted the following returns:


Total Returns as of October 31, 2010	6-month		12-month

US large cap equities (S&P 500 Index)	0.74	%	16.52	%

US small cap equities (Russell 2000 Index)	(1.24	)	26.58

International equities (MSCI Europe, Australasia, Far East Index)	5.74		8.36

3-month Treasury bill (BofA Merrill Lynch 3-Month Treasury Bill Index)	0.08		0.12

US Treasury securities (BofA Merrill Lynch 10-Year US Treasury Index)	10.63		10.03

US investment grade bonds (Barclays Capital US Aggregate Bond Index)	5.33		8.01

Tax-exempt municipal bonds (Barclays Capital Municipal Bond Index)	3.95		7.78

US high yield bonds (Barclays Capital US Corporate High Yield 2% Issuer Capped Index)	6.73		19.10

Past performance is no guarantee of future results. Index performance shown for illustrative purposes only. You cannot invest directly in an index.

As global economic conditions continue to improve, investors across the world continue to face uncertainty about the future of economic growth. Through periods of uncertainty, as ever, BlackRock’s full resources are dedicated to the management of our clients’ assets. For additional market perspective and investment insight, visit www.blackrock.com/shareholdermagazine, where you’ll find the most recent issue of our award-winning Shareholder® magazine, as well as its quarterly companion newsletter, Shareholder Perspectives. As always, we thank you for entrusting BlackRock with your investments, and we look forward to your continued partnership in the months and years ahead.

Sincerely,

-s- Rob Kapito

Rob Kapito

President, BlackRock Advisors, LLC



	THIS PAGE NOT PART OF YOUR FUND REPORT	3




Fund Summary as of October 31, 2010	BlackRock Apex Municipal Fund, Inc.


Fund Overview


BlackRock Apex Municipal Fund, Inc.’s (APX) (the “Fund”) investment objective is to provide high current income exempt from federal income taxes by investing primarily in a portfolio of medium- to lower-grade or unrated municipal obligations, the interest on which is exempt from federal income taxes in the opinion of bond counsel to the issuer. The Fund seeks to achieve its investment objective by investing, under normal market conditions, at least 80% of its assets in municipal bonds exempt from federal income taxes (except that the interest may be subject to the federal alternative minimum tax). The Fund invests at least 75% of its assets in municipal bonds that are rated in the medium to lower categories by nationally recognized rating services (Baa or lower by Moody’s Investors Service, Inc. or BBB or lower by Standard & Poor’s Corporation) or non-rated securities which are of comparable quality. The Fund may invest directly in such securities or synthetically through the use of derivatives.

No assurance can be given that the Fund’s investment objective will be achieved.


Performance


For the six months ended October 31, 2010, the Fund returned 7.99% based on market price and 6.36% based on net asset value (“NAV”). For the same period, the closed-end Lipper High Yield Municipal Debt Funds category posted an average return of 7.20% based on market price and 6.92% based on NAV. All returns reflect reinvestment of dividends. The Fund’s discount to NAV, which narrowed during the period, accounts for the difference between performance based on price and performance based on NAV. The following discussion relates to performance based on NAV. The Fund’s low concentrations in tax-backed (state, county, city and school district) and development district (special district) issues detracted from performance as these sectors continued to strengthen during the period. The Fund’s portfolio duration remained relatively lower than its Lipper category average, which has proven detrimental in the declining interest rate environment. In addition, a majority of peers within the Lipper category employ a higher degree of leverage, which can enhance both returns and distribution yields. Contributing positively to performance was sector allocation, particularly with respect to concentrations in health, transportation, and corporate-related debt, all of which performed well during the period. Also beneficial was the Fund’s positioning in the intermediate range of the yield curve, which outperformed the longer end of the curve for the period.


	The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.



Fund Information

Symbol on New York Stock Exchange (“NYSE”)		APX
Initial Offering Date		July 25, 1989
Yield on Closing Market Price as of October 31, 2010 ($9.31)¹		5.67%
Tax Equivalent Yield²		8.72%
Current Monthly Distribution per Common Share³		$0.044
Current Annualized Distribution per Common Share³		$0.528
Leverage as of October 31, 2010⁴		4%


	¹	Yield on closing market price is calculated by dividing the current annualized distribution per share by the closing market price. Past performance does not guarantee future results.

	²	Tax equivalent yield assumes the maximum federal tax rate of 35%.

	³	The distribution is not constant and is subject to change.

	⁴	Represents tender option bond trusts (“TOBs”) as a percentage of total managed assets, which is the total assets of the Fund, including any assets attributable to TOBs, minus the sum of accrued liabilities. For a discussion of leveraging techniques utilized by the Fund, please see The Benefits and Risks of Leveraging on page 12.

The table below summarizes the changes in the Fund’s market price and NAV per share:



	10/31/10	4/30/10	Change	High	Low

Market Price	$9.31	$8.87	4.96%	$9.61	$8.75
Net Asset Value	$9.50	$9.19	3.37%	$9.54	$9.16


The following charts show the sector and credit quality allocations of the Fund’s long-term investments:



Sector Allocations


	10/31/10		4/30/10

Health	29	%	29	%
Corporate	21		20
County/City/Special District/School District	16		16
Transportation	12		11
Education	7		7
Utilities	6		4
Tobacco	3		5
Housing	3		4
State	3		4



Credit Quality Allocations⁵


	10/31/10		4/30/10

AAA/Aaa	3	%	7	%
AA/Aa	6		2
A	10		11
BBB/Baa	27		26
BB/Ba	8		8
B	6		7
CCC/Caa	5		4
Not Rated⁶	35		35


⁵	Using the higher of Standard & Poor’s (“S&P’s”) or Moody’s Investors Service (“Moody’s”) ratings.

⁶	The investment advisor has deemed certain of these securities to be of investment grade quality. As of October 31, 2010 and April 30, 2010, the market value of these securities was $14,880,896 representing 8% and $14,523,630 representing 8%, respectively, of the Fund’s long-term investments.



4	SEMI-ANNUAL REPORT	OCTOBER 31, 2010




Fund Summary as of October 31, 2010	BlackRock MuniAssets Fund, Inc.


Fund Overview


BlackRock MuniAssets Fund, Inc.’s (MUA) (the “Fund”) investment objective is to provide high current income exempt from federal income taxes by investing primarily in a portfolio of medium- to lower-grade or unrated municipal obligations, the interest on which, in the opinion of bond counsel, is exempt from federal income taxes. The Fund seeks to achieve its investment objective by investing, under normal market conditions, at least 80% of its assets in municipal bonds exempt from federal income taxes (except that the interest may be subject to the federal alternative minimum tax). The Fund invests at least 65% of its assets in municipal bonds that are rated in the medium to lower categories by nationally recognized rating services (for example, Baa or lower by Moody’s Investors Service, Inc. or BBB or lower by Standard & Poor’s Corporation) or non-rated securities which are of comparable quality. The Fund may invest directly in such securities or synthetically through the use of derivatives.

No assurance can be given that the Fund’s investment objective will be achieved.


Performance


For the six months ended October 31, 2010, the Fund returned 5.72% based on market price and 6.54% based on NAV. For the same period, the closed-end Lipper High Yield Municipal Debt Funds category posted an average return of 7.20% based on market price and 6.92% based on NAV. All returns reflect reinvestment of dividends. The Fund moved from a premium to NAV to a discount by period end, which accounts for the difference between performance based on price and performance based on NAV. The following discussion relates to performance based on NAV. The Fund’s low concentrations in tax-backed (state, county, city and school district) and development district (special district) issues detracted from performance as these sectors continued to strengthen during the period. The Fund’s portfolio duration remained relatively lower than its Lipper category average, which has proven detrimental in the declining interest rate environment. In addition, a majority of peers within the Lipper category employ a higher degree of leverage, which can enhance both returns and distribution yields. Contributing positively to performance was sector allocation, particularly with respect to concentrations in health, transportation, and corporate-related debt, all of which performed well during the period. Also beneficial was the Fund’s positioning in the intermediate range of the yield curve, which outperformed the longer end of the curve for the period.


	The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.



Fund Information


Symbol on NYSE	MUA
Initial Offering Date	June 25, 1993
Yield on Closing Market Price as of October 31, 2010 ($12.99)¹	5.77%
Tax Equivalent Yield²	8.88%
Current Monthly Distribution per Common Share³	$0.0625
Current Annualized Distribution per Common Share³	$0.7500
Leverage as of October 31, 2010⁴	4%


	¹	Yield on closing market price is calculated by dividing the current annualized distribution per share by the closing market price. Past performance does not guarantee future results.

	²	Tax equivalent yield assumes the maximum federal tax rate of 35%.

	³	The distribution is not constant and is subject to change.

	⁴	Represents TOBs as a percentage of total managed assets, which is the total assets of the Fund, including any assets attributable to TOBs, minus the sum of accrued liabilities. For a discussion of leveraging techniques used by the Fund, please see The Benefits and Risks of Leveraging on page 12.

The table below summarizes the changes in the Fund’s market price and NAV per share:



	10/31/10	4/30/10	Change	High	Low

Market Price	$12.99	$12.65	2.69%	$13.21	$12.26
Net Asset Value	$13.07	$12.63	3.48%	$13.12	$12.57


The following charts show the sector and credit quality allocations of the Fund’s long-term investments:



Sector Allocations


	10/31/10		4/30/10

Health	26	%	29	%
Corporate	25		24
County/City/Special District/School District	13		13
Transportation	12		11
Utilities	7		4
Education	6		6
Tobacco	4		5
Housing	4		4
State	3		4



Credit Quality Allocations⁵


	10/31/10		4/30/10

AAA/Aaa	3	%	6	%
AA/Aa	6		3
A	11		14
BBB/Baa	29		26
BB/Ba	8		8
B	7		7
CCC/Caa	5		4
Not Rated⁶	31		32


	⁵	Using the higher of S&P’s or Moody’s ratings.

	⁶	The investment advisor has deemed certain of these securities to be of investment grade quality. As of October 31, 2010 and April 30, 2010, the market value of these securities was $13,096,178 representing 5% and $15,867,930, representing 6%, respectively, of the Fund’s long-term investments.



SEMI-ANNUAL REPORT	OCTOBER 31, 2010	5




Fund Summary as of October 31, 2010	BlackRock MuniEnhanced Fund, Inc.


Fund Overview


BlackRock MuniEnhanced Fund, Inc.’s (MEN) (the “Fund”) investment objective is to provide shareholders with as high a level of current income exempt from federal income taxes as is consistent with its investment policies and prudent investment management. The Fund seeks to achieve its investment objective by investing at least 80% of its assets in municipal bonds exempt from federal income taxes (except that the interest may be subject to the federal alternative minimum tax). Under normal market conditions, the Fund invests primarily in long-term municipal bonds rated investment grade quality at the time of investment and invests primarily in long-term municipal bonds with maturities of more than ten years at the time of investment. The Fund may invest directly in such securities or synthetically through the use of derivatives.

No assurance can be given that the Fund’s investment objective will be achieved.


Performance


For the six months ended October 31, 2010, the Fund returned 7.41% based on market price and 6.81% based on NAV. For the same period, the closed-end Lipper Insured Municipal Debt Funds (Leveraged) category posted an average return of 7.94% based on market price and 5.84% based on NAV. All returns reflect reinvestment of dividends. The Fund’s discount to NAV, which narrowed during the period, accounts for the difference between performance based on price and performance based on NAV. The following discussion relates to performance based on NAV. The Fund benefited from its modestly long duration relative to the Lipper category average as bond prices rallied in the declining interest rate environment. The tax-exempt municipal market in general benefited from the Build America Bond Program, which alleviated supply pressure in the tax-exempt space, especially on the long end of the yield curve. The Fund’s holdings of insured bonds with lower quality underlying credits contributed positively to performance as did exposure to traditionally higher yielding sectors, including transportation, health and corporate-related debt, as credit quality spreads generally tightened during the period. Conversely, the Fund’s holdings of zero-coupon bonds detracted from performance as these securities generally underperformed coupon bonds due to widening spreads in the sector. In addition, the Fund’s low exposure to education hindered performance as the sector performed well during the period.


	The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.



Fund Information

Symbol on NYSE	MEN
Initial Offering Date	March 2, 1989
Yield on Closing Market Price as of October 31, 2010 ($11.26)¹	6.07%
Tax Equivalent Yield²	9.34%
Current Monthly Distribution per Common Share³	$0.057
Current Annualized Distribution per Common Share³	$0.684
Leverage as of October 31, 2010⁴	38%


	¹	Yield on closing market price is calculated by dividing the current annualized distribution per share by the closing market price. Past performance does not guarantee future results.

	²	Tax equivalent yield assumes the maximum federal tax rate of 35%.

	³	The distribution is not constant and is subject to change.

	⁴	Represents Auction Market Preferred Shares (“Preferred Shares”) and TOBs as a percentage of total managed assets, which is the total assets of the Fund, including any assets attributable to Preferred Shares and TOBs, minus the sum of accrued liabilities. For a discussion of leveraging techniques used by the Fund, please see The Benefits and Risks of Leveraging on page 12.

The table below summarizes the changes in the Fund’s market price and NAV per share:



	10/31/10	4/30/10	Change	High	Low

Market Price	$11.26	$10.81	4.16%	$11.70	$10.38
Net Asset Value	$11.29	$10.90	3.58%	$11.47	$10.85


The following charts show the sector and credit quality allocations of the Fund’s long-term investments:



Sector Allocations


	10/31/10		4/30/10

County/City/Special District/School District	29	%	28	%
Transportation	22		24
State	18		19
Utilities	14		14
Health	6		7
Education	5		3
Corporate	3		2
Housing	3		3



Credit Quality Allocations⁵


	10/31/10		4/30/10

AAA/Aaa	12	%	46	%
AA/Aa	59		23
A	25		26
BBB/Baa	4		5
⁵Using the higher of S&P’s or Moody’s ratings.



6	SEMI-ANNUAL REPORT	OCTOBER 31, 2010




Fund Summary as of October 31, 2010	BlackRock MuniHoldings Fund, Inc.


Fund Overview


BlackRock MuniHoldings Fund, Inc.’s (MHD) (the “Fund”) investment objective is to provide shareholders with current income exempt from federal income taxes. The Fund seeks to achieve its investment objective by investing at least 80% of its assets in municipal bonds exempt from federal income taxes (except that the interest may be subject to the federal alternative minimum tax). The Fund invests, under normal market conditions, at least 75% of its assets in municipal bonds rated investment grade and invests primarily in long-term municipal bonds with a maturity of more than ten years at the time of investment. The Fund may invest directly in such securities or synthetically through the use of derivatives.

No assurance can be given that the Fund’s investment objective will be achieved.


Performance


For the six months ended October 31, 2010, the Fund returned 9.74% based on market price and 7.36% based on NAV. For the same period, the closed-end Lipper General Municipal Debt Funds (Leveraged) category posted an average return of 7.68% based on market price and 6.42% based on NAV. All returns reflect reinvestment of dividends. The Fund moved from a discount to NAV to a premium by period end, which accounts for the difference between performance based on price and performance based on NAV. The following discussion relates to performance based on NAV. The Fund’s outperformance relative to its Lipper category was driven by sector allocation, particularly with respect to concentrations in health and corporate-related debt, both of which continued to perform well during the period. The Fund’s focus on lower quality credits had a positive impact due to the ongoing contraction of credit quality spreads. In addition, the Fund’s modestly long portfolio duration (sensitivity to interest rates) relative to the Lipper category average proved beneficial in the declining interest rate environment. Conversely, a concentration of holdings in longer dated issues detracted from performance as the intermediate range of the yield curve outperformed the longer end of the curve.


	The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.



Fund Information


Symbol on NYSE	MHD
Initial Offering Date	May 2, 1997
Yield on Closing Market Price as of October 31, 2010 ($16.68)¹	6.40%
Tax Equivalent Yield²	9.85%
Current Monthly Distribution per Common Share³	$0.089
Current Annualized Distribution per Common Share³	$1.068
Leverage as of October 31, 2010⁴	36%


	¹	Yield on closing market price is calculated by dividing the current annualized distribution per share by the closing market price. Past performance does not guarantee future results.

	²	Tax equivalent yield assumes the maximum federal tax rate of 35%.

	³	A change in the distribution rate was declared on December 6, 2010. The Monthly Distribution per Common Share was increased to $0.0905. The Yield on Closing Market Price, Current Monthly Distribution per Common Share and Current Annualized Distribution per Common Share do not reflect the new distribution rate. The new distribution rate is not constant is subject to further change in the future.

	⁴	Represents Preferred Shares and TOBs as a percentage of total managed assets, which is the total assets of the Fund, including any assets attributable to Preferred Shares and TOBs, minus the sum of accrued liabilities. For a discussion of leveraging techniques used by the Fund, please see The Benefits and Risks of Leveraging on page 12.

The table below summarizes the changes in the Fund’s market price and NAV per share:



	10/31/10	4/30/10	Change	High	Low

Market Price	$16.68	$15.70	6.24%	$17.05	$14.85
Net Asset Value	$16.37	$15.75	3.94%	$16.55	$15.61


The following charts show the sector and credit quality allocations of the Fund’s long-term investments:



Sector Allocations


	10/31/10		4/30/10

Health	23	%	23	%
Corporate	14		14
State	12		12
Transportation	12		11
Utilities	12		11
County/City/Special District/School District	10		11
Education	8		9
Housing	7		7
Tobacco	2		2



Credit Quality Allocations⁵


	10/31/10		4/30/10

AAA/Aaa	12	%	19	%
AA/Aa	39		32
A	22		23
BBB/Baa	12		11
BB/Ba	2		2
B	2		2
CCC/Caa	2		2
Not Rated⁶	9		9


	⁵	Using the higher of S&P’s or Moody’s ratings.

	⁶	The investment advisor has deemed certain of these non-rated securities to be of investment grade quality. As of October 31, 2010 and April 30, 2010, the market value of these securities was $2,891,783 representing 1% and $2,973,600 representing 1%, respectively, of the Fund’s long-term investments.



SEMI-ANNUAL REPORT	OCTOBER 31, 2010	7




Fund Summary as of October 31, 2010	BlackRock MuniHoldings Fund II, Inc.


Fund Overview


BlackRock MuniHoldings Fund II, Inc.’s (MUH) (the “Fund”) investment objective is to provide shareholders with current income exempt from federal income taxes. The Fund seeks to achieve its investment objective by investing, under normal market conditions, at least 80% of its assets in municipal bonds exempt from federal income taxes (except that the interest may be subject to the federal alternative minimum tax). The Fund invests, under normal market conditions, at least 75% of its assets in municipal bonds rated investment grade and invests primarily in long-term municipal bonds with a maturity of more than ten years at the time of investment. The Fund may invest directly in such securities or synthetically through the use of derivatives.

No assurance can be given that the Fund’s investment objective will be achieved.


Performance


For the six months ended October 31, 2010, the Fund returned 7.64% based on market price and 7.30% based on NAV. For the same period, the closed-end Lipper General Municipal Debt Funds (Leveraged) category posted an average return of 7.68% based on market price and 6.42% based on NAV. All returns reflect reinvestment of dividends. The Fund’s premium to NAV, which widened during the period, accounts for the difference between performance based on price and performance based on NAV. The following discussion relates to performance based on NAV. The Fund’s outperformance relative to its Lipper category was driven by sector allocation, particularly with respect to concentrations in health and corporate-related debt, both of which continued to perform well during the period. The Fund’s focus on lower quality credits had a positive impact due to the ongoing contraction of credit quality spreads. In addition, the Fund’s modestly long portfolio duration (sensitivity to interest rates) relative to the Lipper category average proved beneficial in the declining interest rate environment. Conversely, a concentration of holdings in longer dated issues detracted from performance as the intermediate range of the yield curve outperformed the longer end of the curve.

The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.



Fund Information


Symbol on NYSE	MUH
Initial Offering Date	February 27, 1998
Yield on Closing Market Price as of October 31, 2010 ($15.30)¹	6.31%
Tax Equivalent Yield²	9.71%
Current Monthly Distribution per Common Share³	$0.0805
Current Annualized Distribution per Common Share³	$0.9660
Leverage as of October 31, 2010⁴	34%


	¹	Yield on closing market price is calculated by dividing the current annualized distribution per share by the closing market price. Past performance does not guarantee future results.

	²	Tax equivalent yield assumes the maximum federal tax rate of 35%.

	³	The distribution is not constant and is subject to change.

	⁴	Represents Preferred Shares and TOBs as a percentage of total managed assets, which is the total assets of the Fund, including any assets attributable to Preferred Shares and TOBs, minus the sum of accrued liabilities. For a discussion of leveraging techniques used by the Fund, please see The Benefits and Risks of Leveraging on page 12.

The table below summarizes the changes in the Fund’s market price and NAV per share:



	10/31/10	4/30/10	Change	High	Low

Market Price	$15.30	$14.68	4.22%	$16.48	$13.99
Net Asset Value	$15.22	$14.65	3.89%	$15.39	$14.53


The following charts show the sector and credit quality allocations of the Fund’s long-term investments:



Sector Allocations


	10/31/10		4/30/10

Health	22	%	21	%
City/County/Special District/School District	15		15
Corporate	15		15
State	12		12
Transportation	11		10
Education	9		10
Utilities	9		8
Housing	5		7
Tobacco	2		2



Credit Quality Allocations⁵


	10/31/10		4/30/10

AAA/Aaa	12		18	%
AA/Aa	42		37
A	20		20
BBB/Baa	12		12
BB/Ba	2		2
B	1		1
CCC/Caa	2		2
Not Rated⁶	9		8


	⁵	Using the higher of S&P’s or Moody’s ratings.

	⁶	The investment advisor has deemed certain of these securities to be of investment grade quality. As of October 31, 2010 and April 30, 2010, the market value of these securities was $5,831,267 representing 2% and $4,406,945 representing 2%, respectively, of the Fund’s long-term investments.



8	SEMI-ANNUAL REPORT	OCTOBER 31, 2010




Fund Summary as of October 31, 2010	BlackRock MuniHoldings Quality Fund, Inc.


Fund Overview


Effective November 9, 2010, BlackRock MuniHoldings Insured Fund, Inc. changed its name to BlackRock MuniHoldings Quality Fund, Inc.

BlackRock MuniHoldings Quality Fund, Inc.’s (MUS) (the “Fund”) investment objective is to provide shareholders with current income exempt from federal income taxes. The Fund seeks to achieve its investment objective by investing primarily in long-term, investment grade municipal obligations exempt from federal income taxes (except that the interest may be subject to the federal alternative minimum tax). The Fund invests primarily in long-term municipal bonds with a maturity of more than ten years at the time of investment. The Fund may invest directly in such securities or synthetically through the use of derivatives.

No assurance can be given that the Fund’s investment objective will be achieved.


Performance


For the six months ended October 31, 2010, the Fund returned 8.62% based on market price and 6.32% based on NAV. For the same period, the closed-end Lipper Insured Municipal Debt Funds (Leveraged) category posted an average return of 7.94% based on market price and 5.84% based on NAV. All returns reflect reinvestment of dividends. The Fund’s premium to NAV, which widened during the period, accounts for the difference between performance based on price and performance based on NAV. The following discussion relates to performance based on NAV. The Fund’s exposure to health, housing and transportation contributed positively to performance as credit quality spreads generally tightened, causing these sectors to outperform other municipal market sectors, particularly among bonds with longer maturities. The tax-exempt municipal market in general benefited from the Build America Bond Program, which alleviated supply pressure in the tax-exempt space, especially on the long end of the yield curve. As such, the Fund’s slightly long duration stance enhanced performance for the period. Detracting from performance was the Fund’s exposure to bonds with short call features, which did not fully benefit from the price appreciation that occurred among bonds with longer call dates and non-callable bonds.


	The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.



Fund Information


Symbol on NYSE	MUS
Initial Offering Date	May 1, 1998
Yield on Closing Market Price as of October 31, 2010 ($14.09)¹	6.30%
Tax Equivalent Yield²	9.69%
Current Monthly Distribution per Common Share³	$0.074
Current Annualized Distribution per Common Share³	$0.888
Leverage as of October 31, 2010⁴	40%


	¹	Yield on closing market price is calculated by dividing the current annualized distribution per share by the closing market price. Past performance does not guarantee future results.

	²	Tax equivalent yield assumes the maximum federal tax rate of 35%.

	³	The distribution is not constant and is subject to change.

	⁴	Represents Preferred Shares and TOBs as a percentage of total managed assets, which is the total assets of the Fund, including any assets attributable to Preferred Shares and TOBs, minus the sum of accrued liabilities. For a discussion of leveraging techniques used by the Fund, please see The Benefits and Risks of Leveraging on page 12.

The table below summarizes the changes in the Fund’s market price and NAV per share:



	10/31/10	4/30/10	Change	High	Low

Market Price	$14.09	$13.40	5.15%	$14.73	$13.10
Net Asset Value	$13.73	$13.34	2.92%	$13.94	$13.24


The following charts show the sector and credit quality allocations of the Fund’s long-term investments:



Sector Allocations


	10/31/10		4/30/10

City/County/Special District/School District	29	%	33	%
Utilities	22		22
Transportation	21		16
State	11		13
Health	9		9
Housing	5		5
Corporate	3		2



Credit Quality Allocations⁵


	10/31/10		4/30/10

AAA/Aaa	10	%	58	%
AA/Aa	57		16
A	21		24
BBB/Baa	1		1
Not Rated⁶	11		1


	⁵	Using the higher of S&P’s or Moody’s ratings.

	⁶	The investment advisor has deemed certain of these securities to be of investment grade quality. As of October 31, 2010 and April 30, 2010, the market value of these securities was $2,426,336 representing 1% and $2,342,435 representing 1%, respectively, of the Fund’s long-term investments.



SEMI-ANNUAL REPORT	OCTOBER 31, 2010	9




Fund Summary as of October 31, 2010	BlackRock Muni Intermediate Duration Fund, Inc.


Fund Overview


BlackRock Muni Intermediate Duration Fund, Inc.’s (MUI) (the “Fund”) investment objective is to provide Common Shareholders with high current income exempt from federal income taxes taxes. The Fund seeks to achieve its investment objective by investing at least 80% of its assets in municipal bonds exempt from federal income taxes (except that the interest may be subject to the federal alternative minimum tax). Under normal market conditions, the Fund invests at least 75% of its assets in municipal bonds rated investment grade and invests at least 80% of its assets in municipal bonds with a duration of three to ten years at the time of investment. The Fund may invest directly in such securities or synthetically through the use of derivatives.

No assurance can be given that the Fund’s investment objective will be achieved.


Performance


For the six months ended October 31, 2010, the Fund returned 11.45% based on market price and 7.11% based on NAV. For the same period, the closed-end Lipper Intermediate Municipal Debt Funds category posted an average return of 8.07% based on market price and 6.02% based on NAV. All returns reflect reinvestment of dividends. The Fund’s discount to NAV, which narrowed during the period, accounts for the difference between performance based on price and performance based on NAV. The following discussion relates to performance based on NAV. While the Fund maintained its neutral duration (sensitivity to interest rates) relative to the Lipper category average during most of the period, we increased its exposure to interest rate-sensitive bonds, including new issues, which delivered strong performance as bond prices rallied in the declining interest rate environment. Increased exposure to high yield and economically sensitive corporate-related municipal debt also contributed positively, as did exposure to traditionally higher yielding sectors, including health and housing, all of which performed well as credit quality spreads tightened during the period. Conversely, the Fund’s short maturity and low duration holdings hindered relative performance due to their limited upward price movement in the declining interest rate environment. In addition, the Fund’s exposure to traditionally higher quality sectors, including utilities and essential services, detracted from performance as these sectors experienced weak demand while investors sought yield.


	The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.



Fund Information


Symbol on NYSE	MUI
Initial Offering Date	August 1, 2003
Yield on Closing Market Price as of October 31, 2010 ($15.32)¹	5.60%
Tax Equivalent Yield²	8.62%
Current Monthly Distribution per Common Share³	$0.0715
Current Annualized Distribution per Common Share³	$0.8580
Leverage as of October 31, 2010⁴	38%


	¹	Yield on closing market price is calculated by dividing the current annualized distribution per share by the closing market price. Past performance does not guarantee future results.

	²	Tax equivalent yield assumes the maximum federal tax rate of 35%.

	³	The distribution is not constant and is subject to change.

	⁴	Represents Preferred Shares and TOBs as a percentage of total managed assets, which is the total assets of the Fund, including any assets attributable to Preferred Shares and TOBs, minus the sum of accrued liabilities. For a discussion of leveraging techniques used by the Fund, please see The Benefits and Risks of Leveraging on page 12.

The table below summarizes the changes in the Fund’s market price and NAV per share:



	10/31/10	4/30/10	Change	High	Low

Market Price	$15.32	$14.13	8.42%	$16.17	$13.41
Net Asset Value	$15.37	$14.75	4.20%	$15.59	$14.70


The following charts show the sector and credit quality allocations of the Fund’s long-term investments:



Sector Allocations


	10/31/10		4/30/10

State	24	%	23	%
City/County/Special District/School District	21		21
Health	15		12
Corporate	11		12
Transportation	8		8
Education	7		6
Utilities	6		8
Tobacco	4		6
Housing	4		4



Credit Quality Allocations⁵


	10/31/10		4/30/10

AAA/Aaa	14	%	28	%
AA/Aa	41		25
A	23		23
BBB/Baa	10		11
BB/Ba	1		1
B	1		2
CCC/Caa	2		3
Not Rated⁶	8		7


	⁵	Using the higher of S&P’s or Moody’s ratings.

	⁶	The investment advisor has deemed certain of these securities to be of investment grade quality. As of October 31, 2010 and April 30, 2010, the market value of these securities was $21,435,534 representing 2% and $11,900,188 representing 1%, respectively, of the Fund’s long-term investments.



10	SEMI-ANNUAL REPORT	OCTOBER 31, 2010




Fund Summary as of October 31, 2010	BlackRock MuniVest Fund II, Inc.


Fund Overview


BlackRock MuniVest Fund II, Inc.’s (MVT) (the “Fund”) investment objective is to provide shareholders with as high a level of current income exempt from federal income taxes as is consistent with its investment policies and prudent investment management. The Fund seeks to achieve its investment objective by investing at least 80% of its assets in municipal bonds exempt from federal income taxes (except that the interest may be subject to the federal alternative minimum tax). The Fund invests, under normal market conditions, at least 75% of its assets in municipal bonds rated investment grade and invests primarily in long-term municipal bonds with a maturity of more than ten years at the time of investment. The Fund may invest directly in such securities or synthetically through the use of derivatives.

No assurance can be given that the Fund’s investment objective will be achieved.


Performance


For the six months ended October 31, 2010, the Fund returned 6.64% based on market price and 7.40% based on NAV. For the same period, the closed-end Lipper General Municipal Debt Funds (Leveraged) category posted an average return of 7.68% based on market price and 6.42% based on NAV. All returns reflect reinvestment of dividends. The Fund’s premium to NAV, which narrowed during the period, accounts for the difference between performance based on price and performance based on NAV. The following discussion relates to performance based on NAV. The Fund’s outperformance relative to its Lipper category was driven by sector allocation, particularly with respect to concentrations in health, transportation, and corporate-related debt, all of which continued to perform well during the period. The Fund’s focus on lower quality credits had a positive impact due to the ongoing contraction of credit quality spreads. In addition, the Fund’s modestly long portfolio duration (sensitivity to interest rates) relative to the Lipper category average proved beneficial in the declining interest rate environment. Conversely, a concentration of holdings in longer dated issues detracted from performance as the intermediate range of the yield curve outperformed the longer end of the curve.


	The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.



Fund Information


Symbol on NYSE	MVT
Initial Offering Date	March 29, 1993
Yield on Closing Market Price as of October 31, 2010 ($15.38)¹	6.91%
Tax Equivalent Yield²	10.63%
Current Monthly Distribution per Common Share³	$0.0885
Current Annualized Distribution per Common Share³	$1.0620
Leverage as of October 31, 2010⁴	40%


	¹	Yield on closing market price is calculated by dividing the current annualized distribution per share by the closing market price. Past performance does not guarantee future results.

	²	Tax equivalent yield assumes the maximum federal tax rate of 35%.

	³	The distribution is not constant and is subject to change.

	⁴	Represents Preferred Shares and TOBs as a percentage of total managed assets, which is the total assets of the Fund, including any assets attributable to Preferred Shares and TOBs, minus the sum of accrued liabilities. For a discussion of leveraging techniques used by the Fund, please see The Benefits and Risks of Leveraging on page 12.

The table below summarizes the changes in the Fund’s market price and NAV per share:



	10/31/10	4/30/10	Change	High	Low

Market Price	$15.38	$14.94	2.95%	$15.84	$14.02
Net Asset Value	$14.94	$14.41	3.68%	$15.12	$14.29


The following charts show the sector and credit quality allocations of the Fund’s long-term investments:



Sector Allocations


	10/31/10		4/30/10

Health	25	%	22	%
State	15		14
Corporate	15		18
Transportation	12		12
County/City/Special District/School District	11		10
Utilities	11		10
Education	6		6
Housing	4		5
Tobacco	1		3



Credit Quality Allocations⁵


	10/31/10		4/30/10

AAA/Aaa	11	%	18	%
AA/Aa	46		39
A	18		18
BBB/Baa	11		11
BB/Ba	1		—
B	3		3
CCC/Caa	—		1
Not Rated⁶	10		10


	⁵	Using the higher of S&P’s or Moody’s ratings.

	⁶	The investment advisor has deemed certain of these securities to be of investment grade quality. As of October 31, 2010 and April 30, 2010, the market value of these securities was $6,274,996 representing 1% and $5,505,082 representing 1%, respectively, of the Fund’s long-term investments.



SEMI-ANNUAL REPORT	OCTOBER 31, 2010	11

The Benefits and Risks of Leveraging

The Funds may utilize leverage to seek to enhance the yield and NAV of their Common Shares. However, these objectives cannot be achieved in all interest rate environments.

To leverage, all of the Funds, except APX and MUA, issue Preferred Shares, which pay dividends at prevailing short-term interest rates, and invest the proceeds in long-term municipal bonds. In general, the concept of leveraging is based on the premise that the cost of assets to be obtained from leverage will be based on short-term interest rates, which normally will be lower than the income earned by each Fund on its longer-term portfolio investments. To the extent that the total assets of each Fund (including the assets obtained from leverage) are invested in higher-yielding portfolio investments, each Fund’s Common Shareholders will benefit from the incremental net income.

To illustrate these concepts, assume a Fund’s Common Shares capitalization is $100 million and it issues Preferred Shares for an additional $50 million, creating a total value of $150 million available for investment in long-term municipal bonds. If prevailing short-term interest rates are 3% and long-term interest rates are 6%, the yield curve has a strongly positive slope. In this case, the Fund pays dividends on the $50 million of Preferred Shares based on the lower short-term interest rates. At the same time, the securities purchased by the Fund with assets received from the Preferred Shares issuance earn the income based on long-term interest rates. In this case, the dividends paid to Preferred Shareholders are significantly lower than the income earned on the Fund’s long-term investments, and therefore the Common Shareholders are the beneficiaries of the incremental net income.

If short-term interest rates rise, narrowing the differential between short-term and long-term interest rates, the incremental net income pickup on the Common Shares will be reduced or eliminated completely. Furthermore, if prevailing short-term interest rates rise above long-term interest rates of 6%, the yield curve has a negative slope. In this case, the Fund pays dividends on the higher short-term interest rates whereas the Fund’s total portfolio earns income based on lower long-term interest rates.

Furthermore, the value of a Fund’s portfolio investments generally varies inversely with the direction of long-term interest rates, although other factors can influence the value of portfolio investments. In contrast, the redemption value of the Funds’ Preferred Shares does not fluctuate in relation to interest rates. As a result, changes in interest rates can influence the Funds’ NAV positively or negatively in addition to the impact on Fund performance from leverage from Preferred Shares discussed above.

The Funds may also leverage their assets through the use of tender option bond (“TOB”) programs, as described in Note 1 of the Notes to Financial Statements. TOB investments generally will provide the Funds with economic benefits in periods of declining short-term interest rates, but expose the Funds to risks during periods of rising short-term interest rates similar to those associated with Preferred Shares issued by the Funds, as described above. Additionally, fluctuations in the market value of municipal bonds deposited into the TOB trust may adversely affect each Fund’s NAV per share.

The use of leverage may enhance opportunities for increased income to the Funds and Common Shareholders, but as described above, it also creates risks as short- or long-term interest rates fluctuate. Leverage also will generally cause greater changes in the Funds’ NAV, market price and dividend rate than a comparable portfolio without leverage. If the income derived from securities purchased with assets received from leverage exceeds the cost of leverage, the Funds’ net income will be greater than if leverage had not been used. Conversely, if the income from the securities purchased is not sufficient to cover the cost of leverage, each Fund’s net income will be less than if leverage had not been used, and therefore the amount available for distribution to Common Shareholders will be reduced. Each Fund may be required to sell portfolio securities at inopportune times or at distressed values in order to comply with regulatory requirements applicable to the use of leverage or as required by the terms of leverage instruments, which may cause a Fund to incur losses. The use of leverage may limit each Fund’s ability to invest in certain types of securities or use certain types of hedging strategies, such as in the case of certain restrictions imposed by ratings agencies that rate Preferred Shares issued by the Funds. Each Fund will incur expenses in connection with the use of leverage, all of which are borne by Common Shareholders and may reduce income to the Common Shares.

Under the Investment Company Act of 1940, the Funds are permitted to issue Preferred Shares in an amount up to 50% of their total managed assets at the time of issuance. Under normal circumstances, each Fund anticipates that the total economic leverage from Preferred Shares and/or TOBs will not exceed 50% of its total managed assets at the time such leverage is incurred. As of October 31, 2010, the Funds had economic leverage from Preferred Shares and/or TOBs as a percentage of their total managed assets as follows:



	Percent of Leverage

APX	4	%
MUA	4	%
MEN	38	%
MHD	36	%
MUH	34	%
MUS	40	%
MUI	38	%
MVT	40	%

Derivative Financial Instruments

The Funds may invest in various derivative instruments, including financial futures contracts, as specified in Note 2 of the Notes to Financial Statements, which may constitute forms of economic leverage. Such instruments are used to obtain exposure to a market without owning or taking physical custody of securities or to hedge market and/or interest rate risks. Such derivative instruments involve risks, including the imperfect correlation between the value of a derivative instrument and the underlying asset or illiquidity of the derivative instrument. The Funds’ ability to successfully use a derivative instrument depends on the investment advisor’s ability to accurately predict pertinent market movements, which cannot be assured. The use of derivative instruments may result in losses greater than if they had not been used, may require the Funds to sell or purchase portfolio investments at inopportune times or for distressed values, may limit the amount of appreciation a Fund can realize on an investment, may result in lower dividends paid to shareholders or may cause the Funds to hold an investment that they might otherwise sell. The Funds’ investments in these instruments are discussed in detail in the Notes to Financial Statements.



12	SEMI-ANNUAL REPORT	OCTOBER 31, 2010




Schedule of Investments October 31, 2010 (Unaudited)	BlackRock Apex Municipal Fund, Inc. (APX)
	(Percentages shown are based on Net Assets)


Municipal Bonds	Par (000)		Value

Alabama — 0.2%
County of Jefferson Alabama, RB, Series A, 5.25%, 1/01/17	$	365	$	345,615

Alaska — 1.0%
Alaska Industrial Development & Export Authority, RB, Williams Lynxs, Alaska Cargoport, AMT, 8.00%, 5/01/23		2,000		1,969,820

Arizona — 3.9%
Maricopa County IDA Arizona, RB, Series A:
Arizona Charter Schools Project, 6.63%, 7/01/20		900		703,512
Sun King Apartments Project, 6.00%, 11/01/10		5		5,000
Phoenix IDA Arizona, Refunding RB, America West Airlines Inc. Project, AMT, 6.30%, 4/01/23		2,950		2,591,103
Pima County IDA, RB:
Arizona Charter Schools Project, Series E, 7.25%, 7/01/31		935		951,073
Tucson Electric Power Co., Series A, 5.25%, 10/01/40		1,635		1,627,593
Pima County IDA, Refunding IDRB, Tucson Electric Power, 5.75%, 9/01/29		460		475,355
University Medical Center Corp. Arizona, RB, 6.25%, 7/01/29		540		586,985
Yavapai County IDA Arizona, RB, Yavapai Regional Medical Center, Series A, 6.00%, 8/01/33		500		506,260

				7,446,881

California — 3.4%
California Statewide Communities Development Authority, Refunding RB:
American Baptist Homes of the West, 6.25%, 10/01/39		885		898,231
Senior Living, Southern California, 7.00%, 11/15/29		400		437,224
Senior Living, Southern California, 7.25%, 11/15/41		1,440		1,584,230
City of Fontana California, Special Tax Bonds, Refunding, Community Facilities District No. 22-Sierra, Series H, 6.00%, 9/01/34		1,000		1,000,240
State of California, GO, Various Purpose, 6.00%, 3/01/33		2,120		2,435,117

				6,355,042


Municipal Bonds	Par (000)		Value

Colorado — 3.0%
E-470 Public Highway Authority, Refunding RB, CAB, 7.08%, 9/01/35 (a)	$	1,505	$	274,452
Elk Valley Public Improvement Corp., RB, Public Improvement Fee, Series A, 7.30%, 9/01/22		2,800		2,803,976
Plaza Metropolitan District No. 1 Colorado, Tax Allocation Bonds, Tax Increment:
Public Improvement Fee, 8.00%, 12/01/25		2,000		2,089,540
Subordinate Public Improvement Fee, 8.13%, 12/01/25		500		464,940

				5,632,908

Connecticut — 2.3%
Harbor Point Infrastructure Improvement District, Tax Allocation Bonds, Harbor Point Project, Series A, 7.88%, 4/01/39		1,610		1,730,347
Mohegan Tribe of Indians of Connecticut, RB, Public Improvement, Priority Distribution:
6.25%, 1/01/31		1,785		1,478,391
5.25%, 1/01/33 (b)		1,500		1,082,055

				4,290,793

Delaware — 0.9%
Delaware State EDA, RB, Exempt Facilities, Indian River Power, 5.38%, 10/01/45		1,720		1,713,189

District of Columbia — 2.2%
District of Columbia, RB, Methodist Home District of Columbia, Series A:
7.38%, 1/01/30		680		695,144
7.50%, 1/01/39		1,110		1,135,663
District of Columbia Tobacco Settlement Financing Corp., Refunding RB, Asset-Backed, 6.50%, 5/15/33		730		721,466
Metropolitan Washington Airports Authority, RB, CAB, 2nd Senior Lien, Series B (AGC), 6.76%, 10/01/39 (a)		9,770		1,680,342

				4,232,615



Portfolio Abbreviations


To simplify the listings of portfolio holdings in the Schedules of Investments, the names and descriptions of many of the securities have been abbreviated according to the following list:

ACA	American Capital Access Corp.
AGC	Assured Guaranty Corp.
AGM	Assured Guaranty Municipal Corp.
AMBAC	American Municipal Bond Assurance Corp.
AMT	Alternative Minimum Tax (subject to)
ARB	Airport Revenue Bonds
BHAC	Berkshire Hathaway Assurance Corp.
CAB	Capital Appreciation Bonds
COP	Certificates of Participation
EDA	Economic Development Authority
EDC	Economic Development Corp.
ERB	Education Revenue Bonds
FGIC	Financial Guaranty Insurance Co.
FHA	Federal Housing Administration
GARB	General Airport Revenue Bond
GO	General Obligation Bonds
HDA	Housing Development Authority
HFA	Housing Finance Agency
HRB	Housing Revenue Bonds
HUD	US Department of Housing and Urban Development
IDA	Industrial Development Authority
IDB	Industrial Development Board
IDRB	Industrial Development Revenue Bonds
ISD	Independent School District
LRB	Lease Revenue Bonds
M/F	Multi-Family
MRB	Mortgage Revenue Bonds
NPFGC	National Public Finance Guarantee Corp.
PSF-GTD	Permanent School Fund Guaranteed
RB	Revenue Bonds
S/F	Single Family
TE	Tax-Exempt
TIF	Tax Increment Financing


See Notes to Financial Statements.

SEMI-ANNUAL REPORT	OCTOBER 31, 2010	13




Schedule of Investments (continued)	BlackRock Apex Municipal Fund, Inc. (APX)
	(Percentages shown are based on Net Assets)


Municipal Bonds	Par (000)		Value

Florida — 8.7%
County of Miami-Dade Florida, Refunding RB, Miami International Airport, Series A-1, 5.38%, 10/01/41	$	360	$	371,581
Hillsborough County IDA, RB, AMT, National Gypsum Co.:
Series A, 7.13%, 4/01/30		2,500		2,437,050
Series B, 7.13%, 4/01/30		1,560		1,520,719
Jacksonville Economic Development Commission, RB, Gerdau Ameristeel US Inc., AMT, 5.30%, 5/01/37		900		791,649
Jacksonville Economic Development Commission, Refunding RB, Florida Proton Therapy Institute, Series A, 6.00%, 9/01/17		750		787,620
Lee County IDA Florida, RB, Series A, Lee Charter Foundation, 5.38%, 6/15/37		1,810		1,559,731
Midtown Miami Community Development District, Special Assessment Bonds, Series A:
6.00%, 5/01/24		1,370		1,357,506
6.25%, 5/01/37		1,350		1,327,685
Santa Rosa Bay Bridge Authority, RB, 6.25%, 7/01/28		2,140		993,409
Sarasota County Health Facilities Authority, Refunding RB, Village on the Isle Project:
5.50%, 1/01/27		370		354,305
5.50%, 1/01/32		550		517,853
Sumter Landing Community Development District Florida, RB, Sub-Series B, 5.70%, 10/01/38		1,585		1,318,577
Tampa Palms Open Space & Transportation Community Development District, RB, Capital Improvement, Richmond Place Project, 7.50%, 5/01/18		1,905		1,905,838
Tolomato Community Development District, Special Assessment Bonds, Special Assessment, 6.65%, 5/01/40		1,850		1,360,323

				16,603,846

Georgia — 4.0%
City of Atlanta Georgia, Tax Allocation Bonds, Princeton Lakes Project, 5.50%, 1/01/31		395		361,682
Clayton County Development Authority, RB, Delta Air Lines Inc. Project, Series A, 8.75%, 6/01/29		1,375		1,589,885
County of Clayton Georgia, Tax Allocation Bonds, Ellenwood Project, 7.50%, 7/01/33		1,335		1,319,047
DeKalb County Hospital Authority Georgia, RB, DeKalb Medical Center Inc. Project, 6.13%, 9/01/40		1,805		1,866,117
Gainesville & Hall County Development Authority, Refunding RB, Acts Retirement Life Community, Series A-2, 6.63%, 11/15/39		645		681,552
Rockdale County Development Authority, RB, Visy Paper Project, Series A, AMT, 6.13%, 1/01/34		1,680		1,688,215

				7,506,498

Guam — 1.5%
Guam Government Waterworks Authority, Refunding RB, Water, 6.00%, 7/01/25		515		527,885
Territory of Guam, GO, Series A:
6.00%, 11/15/19		250		267,255
6.75%, 11/15/29		440		487,362
7.00%, 11/15/39		455		509,786
Territory of Guam, RB, Section 30, Series A, 5.63%, 12/01/29		1,000		1,046,640

				2,838,928

Illinois — 6.4%
City of Chicago Illinois, Refunding RB, American Airlines Inc. Project, 5.50%, 12/01/30		2,860		2,395,393
Illinois Finance Authority, RB:
Navistar International, Recovery Zone, 6.50%, 10/15/40		650		674,381
Roosevelt University Project, 6.50%, 4/01/44		1,700		1,818,507
Rush University Medical Center Obligation Group, Series A, 7.25%, 11/01/30		2,000		2,309,580

Municipal Bonds	Par (000)		Value

Illinois (concluded)
Illinois Finance Authority, Refunding RB:
CAB, Clare Water Tower, Series B, 0.04%, 5/15/50 (a)	$	615	$	7,755
Clare Water Tower, Series A-7, 6.13%, 5/15/41		1,435		947,875
Friendship Village of Schaumburg, 7.25%, 2/15/45		1,630		1,686,496
Primary Health Care Centers Program, 6.60%, 7/01/24		490		446,155
Metropolitan Pier & Exposition Authority, Refunding RB, CAB, McCormick Place Expansion Project, Series B (AGM), 6.25%, 6/15/46 (a)		4,015		452,812
Village of Lincolnshire Illinois, Special Tax Bonds, Sedgebrook Project, 6.25%, 3/01/34		755		683,849
Village of Wheeling Illinois, Tax Allocation Bonds, North Milwaukee/Lake-Cook TIF Project, 6.00%, 1/01/25		750		708,900

				12,131,703

Indiana — 0.8%
Indiana Finance Authority, Refunding RB, Improvement, U.S. Steel Corp., 6.00%, 12/01/26		620		659,934
Vigo County Hospital Authority Indiana, RB, Union Hospital Inc. (b):
5.70%, 9/01/37		440		411,911
5.75%, 9/01/42		545		510,338

				1,582,183

Kentucky — 0.4%
Kentucky Economic Development Finance Authority, Refunding RB, Owensboro Medical Health System, Series A, 6.38%, 6/01/40		645		683,623

Louisiana — 1.1%
Louisiana Local Government Environmental Facilities & Community Development Authority, RB, Westlake Chemical Corp. Projects, 6.75%, 11/01/32		2,000		2,121,920

Maryland — 2.7%
Maryland EDC, RB, Transportation Facilities Project, Series A, 5.75%, 6/01/35		420		437,569
Maryland EDC, Refunding RB, CNX Marine Terminals, Inc., 5.75%, 9/01/25		1,675		1,710,175
Maryland Health & Higher Educational Facilities Authority, RB, Washington Christian Academy, 5.50%, 7/01/38		410		176,288
Maryland Health & Higher Educational Facilities Authority, Refunding RB, Doctor’s Community Hospital, 5.75%, 7/01/38		1,265		1,245,936
Maryland State Energy Financing Administration, RB, Cogeneration, AES Warrior Run, AMT, 7.40%, 9/01/19		1,500		1,500,795

				5,070,763

Massachusetts — 1.3%
Massachusetts Development Finance Agency, RB, First Mortgage, Overlook Communities, Series A, 6.25%, 7/01/34		1,845		1,638,379
Massachusetts Development Finance Agency, Refunding RB, Eastern Nazarene College, 5.63%, 4/01/19		40		39,773
Massachusetts Health & Educational Facilities Authority, RB, Jordan Hospital, Series E, 6.75%, 10/01/33		850		852,278

				2,530,430

Michigan — 2.8%
Advanced Technology Academy, RB, 6.00%, 11/01/37		625		604,744
County of Wayne Michigan, GO, Building Improvement, Series A, 6.75%, 11/01/39		375		401,509
Monroe County Hospital Finance Authority, Refunding RB, Mercy Memorial Hospital Corp. Obligation, 5.50%, 6/01/35		1,260		1,111,887
Royal Oak Hospital Finance Authority Michigan, Refunding RB, William Beaumont Hospital, 8.25%, 9/01/39		2,575		3,095,304

				5,213,444


See Notes to Financial Statements.

14	SEMI-ANNUAL REPORT	OCTOBER 31, 2010




Schedule of Investments (continued)	BlackRock Apex Municipal Fund, Inc. (APX)
	(Percentages shown are based on Net Assets)


Municipal Bonds	Par (000)		Value

Missouri — 0.5%
Kirkwood IDA Missouri, RB, Aberdeen Heights, Series A, 8.25%, 5/15/39	$	945	$	999,895

Multi-State — 0.3%
MuniMae TE Bond Subsidiary LLC, 7.50%, 6/30/49 (b)(c)(d)		653		600,682

Nevada — 0.2%
County of Clark Nevada, Special Assessment Bonds, Special Improvement District No. 142, Local Improvement, 6.38%, 8/01/23		370		360,983

New Hampshire — 0.4%
New Hampshire Health & Education Facilities Authority, RB, Catholic Medical Center, 5.00%, 7/01/36		835		738,190

New Jersey — 5.9%
New Jersey EDA, RB, Continental Airlines Inc. Project, AMT:
6.63%, 9/15/12		3,050		3,091,205
6.25%, 9/15/29		1,000		979,960
New Jersey EDA, Refunding RB, Newark Airport Marriott Hotel, 7.00%, 10/01/14		1,500		1,505,580
New Jersey Educational Facilities Authority, Refunding RB, University of Medicine & Dentistry, Series B:
7.13%, 12/01/23		670		792,168
7.50%, 12/01/32		1,065		1,236,081
New Jersey Health Care Facilities Financing Authority, RB, Pascack Valley Hospital Association, 6.63%, 7/01/36 (e)(f)		1,870		19
New Jersey Health Care Facilities Financing Authority, Refunding RB, St. Joseph’s Healthcare System, 6.63%, 7/01/38		1,680		1,761,497
New Jersey Transportation Trust Fund Authority, RB, CAB, Transportation System, Series C (AMBAC), 5.05%, 12/15/35 (a)		2,760		645,923
Tobacco Settlement Financing Corp. New Jersey, Refunding RB, Series 1A, 4.50%, 6/01/23		1,190		1,113,697

				11,126,130

New York — 6.4%
Brooklyn Arena Local Development Corp., RB, Barclays Center Project, 6.38%, 7/15/43		685		743,985
Chautauqua County Industrial Development Agency, RB, NRG Dunkirk Power Project, 5.88%, 4/01/42		1,710		1,788,421
Dutchess County Industrial Development Agency New York, RB, St. Francis Hospital, Series B, 7.50%, 3/01/29		1,000		1,004,890
Metropolitan Transportation Authority, RB, Series 2008C, 6.50%, 11/15/28		2,000		2,362,100
New York City Industrial Development Agency, RB:
American Airlines Inc., JFK International Airport, AMT, 8.00%, 8/01/28		720		772,466
British Airways Plc Project, AMT, 7.63%, 12/01/32		1,730		1,772,385
Series C, 6.80%, 6/01/28		350		367,549
Special Needs Facilities Pooled Program, Series C-1, 6.50%, 7/01/24		830		804,660
New York Liberty Development Corp., Refunding RB, Second Priority, Bank of America Tower at One Bryant Park Project, 6.38%, 7/15/49		520		557,144
New York State Dormitory Authority, RB, North Shore-Long Island Jewish Health System, Series A, 5.50%, 5/01/37		1,000		1,044,860
Yonkers Industrial Development Agency New York, RB, Sarah Lawrence College Project, Series A, 6.00%, 6/01/41		850		904,451

				12,122,911


Municipal Bonds	Par (000)		Value

North Carolina — 2.4%
North Carolina Capital Facilities Finance Agency, RB, Duke Energy Carolinas, Series B, 4.38%, 10/01/31	$	680	$	666,726
North Carolina Capital Facilities Finance Agency, Refunding RB, Duke Energy Carolinas, Series B, 4.63%, 11/01/40		680		661,708
North Carolina Medical Care Commission, Refunding RB, First Mortgage, Deerfield, Series A, 6.13%, 11/01/38		3,230		3,277,869

				4,606,303

Ohio — 1.4%
Buckeye Tobacco Settlement Financing Authority, RB, Asset-Backed, Senior Series A-2:
5.13%, 6/01/24		1,110		966,322
6.50%, 6/01/47		2,000		1,672,320

				2,638,642

Pennsylvania — 6.6%
Allegheny County Hospital Development Authority, Refunding RB, Health System, West Penn, Series A, 5.38%, 11/15/40		1,885		1,451,073
Bucks County IDA, RB, Ann’s Choice Inc. Facility, Series A, 6.13%, 1/01/25		1,160		1,170,997
Cumberland County Municipal Authority, RB, Diakon Lutheran, 6.38%, 1/01/39		2,510		2,652,769
Lancaster County Hospital Authority, RB, Brethren Village Project, Series A:
6.25%, 7/01/26		475		481,659
6.50%, 7/01/40		675		671,402
Montgomery County IDA Pennsylvania, MRB, Whitemarsh Continuing Care, 6.25%, 2/01/35		1,700		1,537,344
Philadelphia Authority for Industrial Development, RB, AMT:
Commercial Development, 7.75%, 12/01/17		3,000		3,003,840
Subordinate, Air Cargo, Series A, 7.50%, 1/01/25		1,600		1,581,776

				12,550,860

Puerto Rico — 0.8%
Puerto Rico Sales Tax Financing Corp., RB, First Sub-Series A, 6.50%, 8/01/44		1,000		1,151,140
Puerto Rico Sales Tax Financing Corp., Refunding RB, CAB, First Sub-Series C, 6.52%, 8/01/38 (a)		1,815		324,486

				1,475,626

Rhode Island — 0.8%
Central Falls Detention Facility Corp., Refunding RB, 7.25%, 7/15/35		1,750		1,525,230

South Carolina — 0.4%
Connector 2000 Association Inc., RB, CAB, Senior Series B, 11.47%, 1/01/14 (a)(e)(f)		1,075		141,308
South Carolina Jobs, EDA, Refunding RB, Palmetto Health, 5.50%, 8/01/26		670		687,916

				829,224

Tennessee — 0.1%
Shelby County Health Educational & Housing Facilities Board, RB, Village at Germantown, 6.25%, 12/01/34		245		216,132

Texas — 10.9%
Bexar County Health Facilities Development Corp., RB, Army Retirement Residence Project, 6.20%, 7/01/45		2,055		2,115,006
Brazos River Authority, Refunding RB, Texas Utility Co., Series, AMT, 7.70%, 4/01/33		2,530		936,100
Central Texas Regional Mobility Authority, RB:
CAB, 7.48%, 1/01/28 (a)		1,000		348,130
CAB, 7.78%, 1/01/33 (a)		2,150		507,336
CAB, 7.79%, 1/01/34 (a)		4,000		849,400
Senior Lien, 5.75%, 1/01/25		450		475,569


See Notes to Financial Statements.

SEMI-ANNUAL REPORT	OCTOBER 31, 2010	15




Schedule of Investments (continued)	BlackRock Apex Municipal Fund, Inc. (APX)
	(Percentages shown are based on Net Assets)


Municipal Bonds	Par (000)		Value

Texas (concluded)
City of Houston Texas, RB, Special Facilities, Continental Airlines, Series E, AMT, 6.75%, 7/01/21	$	1,865	$	1,872,628
Danbury Higher Education Authority Inc., RB, A.W. Brown Fellowship Charter, Series A (ACA), 5.13%, 8/15/36		1,000		1,168,240
Harris County Health Facilities Development Corp., Refunding RB, Memorial Hermann Healthcare System, Series B, 7.25%, 12/01/35		1,110		1,274,424
Matagorda County Navigation District No. 1 Texas, Refunding RB, Central Power & Light Co. Project, Series A, 6.30%, 11/01/29		850		939,259
North Texas Tollway Authority, RB, Toll, 2nd Tier, Series F, 6.13%, 1/01/31		1,650		1,780,267
Tarrant County Cultural Education Facilities Finance Corp., RB, Series A:
CC Young Memorial Home, 8.00%, 2/15/38		710		749,859
Senior Living Center Project, 8.25%, 11/15/44		1,710		1,729,374
Texas Private Activity Bond Surface Transportation Corp., RB, Senior Lien:
LBJ Infrastructure Group LLC, LBJ Freeway Managed Lanes Project, 7.00%, 6/30/40		1,815		1,972,869
NTE Mobility Partners LLC, North Tarrant Express Managed Lanes Project, 6.88%, 12/31/39		1,605		1,741,650
Texas State Public Finance Authority, Refunding ERB, KIPP Inc., Series A (ACA), 5.00%, 2/15/28		2,250		2,173,995

				20,634,106

U.S. Virgin Islands — 1.1%
United States Virgin Islands, Refunding RB, Senior Secured, Hovensa Coker Project, AMT, 6.50%, 7/01/21		2,100		2,136,435

Utah — 1.2%
County of Carbon Utah, Refunding RB, Laidlaw Environmental, Series A, AMT, 7.45%, 7/01/17		2,240		2,245,331

Vermont — 0.3%
Vermont Economic Development Authority, Refunding MRB, Wake Robin Corp. Project, Series A (ACA), 6.30%, 3/01/33		650		632,482

Virginia — 2.2%
Dulles Town Center Community Development Authority, Special Assessment Bonds, Dulles Town Center Project, 6.25%, 3/01/26		2,330		2,284,775
Tobacco Settlement Financing Corp. Virginia, Refunding RB, Senior Series B1, 5.00%, 6/01/47		2,790		1,958,747

				4,243,522

Wisconsin — 2.2%
Wisconsin Health & Educational Facilities Authority, RB:
New Castle Place Project, Series A, 7.00%, 12/01/31		1,320		1,322,416
Wheaton Franciscan Healthcare, 5.25%, 8/15/34		2,540		2,385,619
Wisconsin Health & Educational Facilities Authority, Refunding RB, St. John’s Communities Inc., Series A:
7.25%, 9/15/29		175		181,055
7.63%, 9/15/39		350		368,777

				4,257,867

Wyoming — 1.3%
County of Sweetwater Wyoming, Refunding RB, FMC Corp. Project, AMT, 5.60%, 12/01/35		2,500		2,522,950

Total Municipal Bonds — 92.0%				174,733,702


Municipal Bonds Transferred to Tender Option Bond Trusts (g)	Par (000)		Value

District of Columbia — 1.6%
District of Columbia Water & Sewer Authority, RB, Series A, 6.00%, 10/01/35	$	2,730	$	3,107,869

Florida — 3.3%
County of Miami-Dade Florida, RB, Miami International Airport, Series A, AMT (AGC), 5.25%, 10/01/33		6,130		6,232,984

Virginia — 3.1%
Virginia HDA, RB, Sub-Series H-1 (NPFGC), 5.38%, 7/01/36		5,710		5,816,548

Total Municipal Bonds Transferred to Tender Option Bond Trusts — 8.0%				15,157,401

Total Long-Term Investments (Cost — $186,374,178) — 100.0%				189,891,103




Short-Term Securities	Shares

FFI Institutional Tax-Exempt Fund, 0.14% (h)(i)		998,663		998,663

Total Short-Term Securities (Cost — $998,663) — 0.5%				998,663

*Total Investments (Cost — $187,372,841) — 100.5%**				190,889,766
Other Assets Less Liabilities — 3.3%				6,330,193
Liability for Trust Certificates, Including Interest Expense and Fees Payable — (3.8)%				(7,289,948	)

Net Assets — 100.0%			$	189,930,011


*	The cost and unrealized appreciation (depreciation) of investments as of October 31, 2010, as computed for federal income tax purposes, were as follows:


Aggregate cost	$	179,453,252

Gross unrealized appreciation	$	12,728,160
Gross unrealized depreciation		(8,577,092	)

Net unrealized appreciation	$	4,151,068


(a)	Represents a zero-coupon bond. Rate shown reflects the current yield as of report date.

(b)	Security exempt from registration under Rule 144A of the Securities Act of 1933. These securities may be resold in transactions exempt from registration to qualified institutional investors.

(c)	Security represents a beneficial interest in a trust. The collateral deposited into the trust is federally tax-exempt revenue bonds issued by various state or local governments, or their respective agencies or authorities. The security is subject to remarketing prior to its stated maturity.

(d)	Variable rate security. Rate shown is as of report date.

(e)	Issuer filed for bankruptcy and/or is in default of interest payments.

(f)	Non-income producing security.

(g)	Securities represent bonds transferred to a tender option bond trust in exchange for which the Fund acquired residual interest certificates. These securities serve as collateral in a financing transaction. See Note 1 of the Notes to Financial Statements for details of municipal bonds transferred to tender option bond trusts.

(h)	Investments in companies considered to be an affiliate of the Fund during the period, for purposes of Section 2(a)(3) of the Investment Company Act of 1940, as amended, were as follows:



Affiliate	Shares Held at April 30, 2010	Net Activity	Shares Held at October 31, 2010	Income

FFI Institutional Tax-Exempt Fund	648,958	349,705	998,663	$993


(i)	Represents the current yield as of report date.


See Notes to Financial Statements.

16	SEMI-ANNUAL REPORT	OCTOBER 31, 2010




Schedule of Investments (concluded)	BlackRock Apex Municipal Fund, Inc. (APX)


•	Fair Value Measurements — Various inputs are used in determining the fair value of investments, which are as follows:

	•	Level 1 — price quotations in active markets/exchanges for identical assets and liabilities

	•	Level 2 — other observable inputs (including, but not limited to: quoted prices for similar assets or liabilities in markets that are active, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the assets or liabilities (such as interest rates, yield curves, volatilities, prepayment speeds, loss severities, credit risks and default rates) or other market-corroborated inputs)

	•	Level 3 — unobservable inputs based on the best information available in the circumstances, to the extent observable inputs are not available (including the Fund’s own assumptions used in determining the fair value of investments)

	The inputs or methodologies used for valuing securities are not necessarily an indication of the risk associated with investing in those securities. For information about the Fund’s policy regarding valuation of investments and other significant accounting policies, please refer to Note 1 of the Notes to Financial Statements.

	The following table summarizes the inputs used as of October 31, 2010 in determining the fair valuation of the Fund’s investments:



Valuation Inputs	Level 1		Level 2		Level 3	Total

Assets:
Investments in Securities:
Long-Term Investments¹		—	$	189,891,103	—	$	189,891,103
Short-Term Securities	$	998,663		—	—		998,663

Total	$	998,663	$	189,891,103	—	$	190,889,766


	¹	See above Schedule of Investments for values in each state or political subdivision.


See Notes to Financial Statements.

SEMI-ANNUAL REPORT	OCTOBER 31, 2010	17




Schedule of Investments October 31, 2010 (Unaudited)	BlackRock MuniAssets Fund, Inc. (MUA)
	(Percentages shown are based on Net Assets)


Municipal Bonds	Par (000)		Value

Alabama — 0.2%
County of Jefferson Alabama, RB, Series A, 5.25%, 1/01/17	$	530	$	501,852

Alaska — 0.1%
Alaska Industrial Development & Export Authority, RB, Williams Lynxs, Alaska Cargoport, AMT, 7.80%, 5/01/14		395		393,416

Arizona — 6.7%
Coconino County Pollution Control Corp. Arizona, Refunding RB, Tucson Electric Power-Navajo, Series A, AMT, 7.13%, 10/01/32		3,000		3,004,530
Maricopa County IDA Arizona, RB, Arizona Charter Schools Project, Series A, 6.63%, 7/01/20		1,520		1,188,154
Phoenix IDA Arizona, Refunding RB, America West Airlines Inc. Project, AMT, 6.30%, 4/01/23		4,800		4,216,032
Pima County IDA, RB:
Arizona Charter Schools Project, Series E, 7.25%, 7/01/31		1,365		1,388,464
Tucson Electric Power Co., Series A, 5.25%, 10/01/40		2,380		2,369,218
Pima County IDA, Refunding IDRB, Tucson Electric Power, 5.75%, 9/01/29		670		692,365
Pima County IDA, Refunding RB:
Arizona Charter Schools Project, Series O, 5.25%, 7/01/31		450		400,522
Charter Schools II, Series A, 6.75%, 7/01/31		670		672,466
Salt Verde Financial Corp., RB, Senior:
5.00%, 12/01/32		1,840		1,777,845
5.00%, 12/01/37		1,350		1,269,891
Show Low Improvement District, Special Assessment Bonds, District No. 5, 6.38%, 1/01/15		745		746,043
University Medical Center Corp., Arizona, RB:
6.25%, 7/01/29		280		304,363
6.50%, 7/01/39		500		543,775

				18,573,668

California — 3.3%
California Statewide Communities Development Authority, Refunding RB:
American Baptist Homes of the West, 6.25%, 10/01/39		1,290		1,309,285
Senior Living, Southern California, 7.00%, 11/15/29		600		655,836
Senior Living, Southern California, 7.25%, 11/15/41		2,060		2,266,330
City of Fontana California, Special Tax Bonds, Refunding, Community Facilities District No. 22-Sierra, Series H, 6.00%, 9/01/34		1,320		1,320,317
State of California, GO, Various Purpose, 6.00%, 3/01/33		3,075		3,532,068

				9,083,836

Colorado — 2.9%
Colorado Health Facilities Authority, Refunding RB, Total Longterm Care National Obligated Group Project, Series A, 6.00%, 11/15/30		610		618,241
E-470 Public Highway Authority, Refunding RB, CAB, 7.08%, 9/01/35 (a)		2,190		399,368
Elk Valley Public Improvement Corp., RB, Public Improvement Fee:
Series A, 7.10%, 9/01/14		1,220		1,245,144
Series A, 7.30%, 9/01/22		2,095		2,097,975
Series B, 7.45%, 9/01/31		200		193,474
Plaza Metropolitan District No. 1 Colorado, Tax Allocation Bonds, Tax Increment:
Public Improvement Fee, 8.00%, 12/01/25		2,850		2,977,595
Subordinate Public Improvement Fee, 8.13%, 12/01/25		525		488,187

				8,019,984


Municipal Bonds	Par (000)		Value

Connecticut — 2.9%
Connecticut State Development Authority, RB, AFCO Cargo BDL LLC Project, AMT, 8.00%, 4/01/30	$	3,490	$	3,391,129
Harbor Point Infrastructure Improvement District, Tax Allocation Bonds, Harbor Point Project, Series A, 7.88%, 4/01/39		2,340		2,514,915
Mohegan Tribe of Indians of Connecticut, RB, Public Improvement, Priority Distribution, 6.25%, 1/01/31		2,610		2,161,680

				8,067,724

Delaware — 0.9%
Delaware State EDA, RB, Exempt Facilities, Indian River Power, 5.38%, 10/01/45		2,505		2,495,080

District of Columbia — 2.1%
District of Columbia, RB, Methodist Home District of Columbia, Series A:
7.38%, 1/01/30		985		1,006,936
7.50%, 1/01/39		1,615		1,652,339
District of Columbia Tobacco Settlement Financing Corp., Refunding RB, Asset-Backed, 6.50%, 5/15/33		1,055		1,042,667
Metropolitan Washington Airports Authority, RB, CAB, 2nd Senior Lien, Series B (AGC), 6.54%, 10/01/30 (a)		7,000		2,147,460

				5,849,402

Florida — 7.4%
County of Miami-Dade Florida, Refunding RB, Miami International Airport, Series A-1, 5.38%, 10/01/41		705		727,680
Greater Orlando Aviation Authority Florida, RB, Special Purpose, JetBlue Airways Corp., AMT, 6.38%, 11/15/26		1,180		1,151,645
Harbor Bay Community Development District Florida, Special Assessment Bonds, Series A, 7.00%, 5/01/33		455		456,024
Hillsborough County IDA, RB, AMT, National Gypsum Co.:
Series A, 7.13%, 4/01/30		2,000		1,949,640
Series B, 7.13%, 4/01/30		1,540		1,501,223
Jacksonville Economic Development Commission, RB, Gerdau Ameristeel US Inc., AMT, 5.30%, 5/01/37		1,300		1,143,493
Jacksonville Economic Development Commission, Refunding RB, Florida Proton Therapy Institute, Series A, 6.00%, 9/01/17		765		803,372
Lee County IDA Florida, RB, Series A, Lee Charter Foundation, 5.38%, 6/15/37		2,620		2,257,733
Midtown Miami Community Development District, Special Assessment Bonds, Series A, 6.25%, 5/01/37		3,255		3,201,195
Santa Rosa Bay Bridge Authority, RB, 6.25%, 7/01/28		3,040		1,411,198
Sarasota County Health Facilities Authority, Refunding RB, Village on the Isle Project:
5.50%, 1/01/27		585		560,184
5.50%, 1/01/32		795		748,532
Sarasota County Public Hospital District, RB, Sarasota Memorial Hospital Project, Series A, 5.63%, 7/01/39		615		647,035
Sumter Landing Community Development District Florida, RB, Sub-Series B, 5.70%, 10/01/38		2,350		1,954,988
Tolomato Community Development District, Special Assessment Bonds, Special Assessment, 6.65%, 5/01/40		2,680		1,970,631

				20,484,573


See Notes to Financial Statements.

18	SEMI-ANNUAL REPORT	OCTOBER 31, 2010




Schedule of Investments (continued)	BlackRock MuniAssets Fund, Inc. (MUA)
	(Percentages shown are based on Net Assets)


Municipal Bonds	Par (000)		Value

Georgia — 3.3%
City of Atlanta Georgia, Tax Allocation Bonds, Princeton Lakes Project, 5.50%, 1/01/31	$	640	$	586,016
Clayton County Development Authority, RB, Delta Air Lines Inc. Project, Series A, 8.75%, 6/01/29		1,990		2,300,997
County of Clayton Georgia, Tax Allocation Bonds, Ellenwood Project, 7.50%, 7/01/33		1,775		1,753,789
DeKalb County Hospital Authority Georgia, RB, DeKalb Medical Center Inc. Project, 6.13%, 9/01/40		1,100		1,137,246
Gainesville & Hall County Development Authority, Refunding RB, Acts Retirement Life Community, Series A-2:
6.38%, 11/15/29		700		740,607
6.63%, 11/15/39		235		248,318
Rockdale County Development Authority, RB, Visy Paper Project, Series A, AMT, 6.13%, 1/01/34		2,435		2,446,907

				9,213,880

Guam — 1.5%
Guam Government Waterworks Authority, Refunding RB, Water, 6.00%, 7/01/25		750		768,765
Territory of Guam, GO, Series A:
6.00%, 11/15/19		365		390,192
6.75%, 11/15/29		635		703,351
7.00%, 11/15/39		660		739,471
Territory of Guam, RB, Section 30, Series A, 5.63%, 12/01/29		1,460		1,528,094

				4,129,873

Illinois — 5.6%
City of Chicago Illinois, Refunding RB, American Airlines Inc. Project, 5.50%, 12/01/30		4,140		3,467,457
Illinois Finance Authority, RB:
Navistar International, Recovery Zone, 6.50%, 10/15/40		950		985,635
Roosevelt University Project, 6.50%, 4/01/44		2,470		2,642,184
Rush University Medical Center Obligation Group, Series B, 7.25%, 11/01/30		1,170		1,351,104
Illinois Finance Authority, Refunding RB:
CAB, Clare Water Tower, Series B, 0.04%, 5/15/50 (a)		885		11,160
Clare Water Tower, Series A-7, 6.13%, 5/15/41		2,065		1,364,015
Friendship Village of Schaumburg, 7.25%, 2/15/45		2,370		2,452,144
Primary Health Care Centers Program, 6.60%, 7/01/24		685		623,706
Metropolitan Pier & Exposition Authority, Refunding RB, CAB, McCormick Place Expansion Project, Series B (AGM), 6.25%, 6/15/46 (a)		5,845		659,199
Village of Lincolnshire Illinois, Special Tax Bonds, Sedgebrook Project, 6.25%, 3/01/34		1,070		969,163
Village of Wheeling Illinois, Tax Allocation Bonds, North Milwaukee/Lake-Cook TIF Project, 6.00%, 1/01/25		825		779,790

				15,305,557

Indiana — 0.8%
Indiana Finance Authority, Refunding RB, Improvement, U.S. Steel Corp., 6.00%, 12/01/26		900		957,969
Vigo County Hospital Authority Indiana, RB, Union Hospital Inc. (b):
5.70%, 9/01/37		615		575,738
5.75%, 9/01/42		765		716,346

				2,250,053


Municipal Bonds	Par (000)		Value

Kentucky — 0.4%
Kentucky Economic Development Finance Authority, Refunding RB, Owensboro Medical Health System, Series A, 6.38%, 6/01/40	$	935	$	990,988

Louisiana — 1.1%
Louisiana Local Government Environmental Facilities & Community Development Authority, RB, Westlake Chemical Corp. Projects, 6.75%, 11/01/32		3,000		3,182,880

Maryland — 2.3%
Maryland EDC, RB, Transportation Facilities Project, Series A, 5.75%, 6/01/35		615		640,726
Maryland EDC, Refunding RB, CNX Marine Terminals, Inc., 5.75%, 9/01/25		2,435		2,486,135
Maryland Health & Higher Educational Facilities Authority, RB, Washington Christian Academy, 5.50%, 7/01/38		590		253,682
Maryland Health & Higher Educational Facilities Authority, Refunding RB, Doctor’s Community Hospital, 5.75%, 7/01/38		1,845		1,817,196
Maryland State Energy Financing Administration, RB, Cogeneration, AES Warrior Run, AMT, 7.40%, 9/01/19		1,080		1,080,572

				6,278,311

Massachusetts — 0.4%
Massachusetts Development Finance Agency, Refunding RB, Eastern Nazarene College, 5.63%, 4/01/29		80		74,818
Massachusetts Health & Educational Facilities Authority, RB, Jordan Hospital, Series E, 6.75%, 10/01/33		1,150		1,153,082

				1,227,900

Michigan — 2.7%
Advanced Technology Academy, RB, 6.00%, 11/01/37		900		870,831
County of Wayne Michigan, GO, Building Improvement, Series A, 6.75%, 11/01/39		545		583,526
Monroe County Hospital Finance Authority, Refunding RB, Mercy Memorial Hospital Corp. Obligation, 5.50%, 6/01/35		1,740		1,535,463
Royal Oak Hospital Finance Authority Michigan, Refunding RB, William Beaumont Hospital, 8.25%, 9/01/39		3,735		4,489,694

				7,479,514

Minnesota — 0.7%
City of Minneapolis Minnesota, Refunding RB, Fairview Health Services, Series A, 6.75%, 11/15/32		1,785		2,035,418

Missouri — 0.5%
Kirkwood IDA Missouri, RB, Aberdeen Heights, Series A, 8.25%, 5/15/39		1,370		1,449,583

Multi-State — 0.3%
MuniMae TE Bond Subsidiary LLC, 7.50%, 6/30/49 (b)(c)(d)		933		858,116

Nevada — 0.2%
County of Clark Nevada, Special Assessment Bonds, Special Improvement District No. 142, Local Improvement, 6.38%, 8/01/23		605		590,256

New Hampshire — 0.4%
New Hampshire Health & Education Facilities Authority, RB, Catholic Medical Center, 5.00%, 7/01/36		1,165		1,029,930


See Notes to Financial Statements.

SEMI-ANNUAL REPORT	OCTOBER 31, 2010	19




Schedule of Investments (continued)	BlackRock MuniAssets Fund, Inc. (MUA)
	(Percentages shown are based on Net Assets)


Municipal Bonds	Par (000)		Value

New Jersey — 7.0%
New Jersey EDA, RB, Continental Airlines Inc. Project, AMT:
6.63%, 9/15/12	$	1,000	$	1,013,510
6.25%, 9/15/19		2,000		1,986,400
6.40%, 9/15/23		1,000		999,910
6.25%, 9/15/29		3,330		3,263,267
9.00%, 6/01/33 (d)		1,250		1,329,237
New Jersey EDA, Refunding RB, Newark Airport Marriott Hotel, 7.00%, 10/01/14		2,500		2,509,300
New Jersey Educational Facilities Authority, Refunding RB, University of Medicine & Dentistry, Series B, 7.50%, 12/01/32		2,510		2,913,206
New Jersey Health Care Facilities Financing Authority, RB, Pascack Valley Hospital Association, 6.63%, 7/01/36 (e)(f)		2,000		20
New Jersey Health Care Facilities Financing Authority, Refunding RB, St. Joseph’s Healthcare System, 6.63%, 7/01/38		2,410		2,526,909
New Jersey Transportation Trust Fund Authority, RB, CAB, Transportation System, Series C (AMBAC), 5.05%, 12/15/35 (a)		3,450		807,404
Tobacco Settlement Financing Corp. New Jersey, Refunding RB, Series 1A, 4.50%, 6/01/23		2,310		2,161,883

				19,511,046

New York — 6.2%
Brooklyn Arena Local Development Corp., RB, Barclays Center Project, 6.38%, 7/15/43		1,000		1,086,110
Chautauqua County Industrial Development Agency, RB, NRG Dunkirk Power Project, 5.88%, 4/01/42		2,485		2,598,962
Dutchess County Industrial Development Agency New York, Refunding RB, St. Francis Hospital, Series A, 7.50%, 3/01/29		1,400		1,406,846
Metropolitan Transportation Authority, RB, Series 2008C, 6.50%, 11/15/28		3,685		4,352,169
New York City Industrial Development Agency, RB:
American Airlines Inc., JFK International Airport, AMT, 8.00%, 8/01/28 (d)		1,045		1,121,149
British Airways Plc Project, AMT, 7.63%, 12/01/32		2,400		2,458,800
Series C, 6.80%, 6/01/28		510		535,571
Special Needs Facilities Pooled Program, Series C-1, 6.63%, 7/01/29		1,515		1,424,479
New York Liberty Development Corp., Refunding RB, Second Priority, Bank of America Tower at One Bryant Park Project, 6.38%, 7/15/49		750		803,573
Yonkers Industrial Development Agency New York, RB, Sarah Lawrence College Project, Series A, 6.00%, 6/01/41		1,240		1,319,435

				17,107,094

North Carolina — 1.6%
North Carolina Capital Facilities Finance Agency, RB, Duke Energy Carolinas, Series B, 4.38%, 10/01/31		985		965,773
North Carolina Capital Facilities Finance Agency, Refunding RB, Duke Energy Carolinas, Series B, 4.63%, 11/01/40		985		958,503
North Carolina Medical Care Commission, Refunding RB, First Mortgage, Deerfield, Series A, 6.13%, 11/01/38		2,335		2,369,605

				4,293,881

Ohio — 1.6%
Buckeye Tobacco Settlement Financing Authority, RB, Asset-Backed, Senior Series A-2:
5.13%, 6/01/24		2,250		1,958,760
6.50%, 6/01/47		3,935		2,508,481

				4,467,241


Municipal Bonds	Par (000)		Value

Pennsylvania — 8.5%
Allegheny County Hospital Development Authority, Refunding RB, Health System, West Penn, Series A, 5.38%, 11/15/40	$	2,460	$	1,893,708
Bucks County IDA, RB, Ann’s Choice Inc. Facility, Series A:
6.13%, 1/01/25		200		201,896
6.25%, 1/01/35		1,550		1,523,480
Cumberland County Municipal Authority, RB, Diakon Lutheran, 6.38%, 1/01/39		3,655		3,862,896
Lancaster County Hospital Authority, RB, Brethren Village Project, Series A:
6.25%, 7/01/26		685		694,604
6.50%, 7/01/40		990		984,723
Montgomery County IDA Pennsylvania, MRB, Whitemarsh Continuing Care, 6.13%, 2/01/28		2,330		2,146,979
Pennsylvania Economic Development Financing Authority, RB, AMT:
National Gypsum Co., Series A, 6.25%, 11/01/27		3,250		2,900,332
Reliant Energy, Series B, 6.75%, 12/01/36		2,040		2,101,118
Philadelphia Authority for Industrial Development, RB, AMT:
Commercial Development, 7.75%, 12/01/17		5,000		5,006,400
Subordinate, Air Cargo, Series A, 7.50%, 1/01/25		2,270		2,244,145

				23,560,281

Puerto Rico — 0.9%
Puerto Rico Sales Tax Financing Corp., RB, First Sub-Series A, 6.50%, 8/01/44		1,650		1,899,381
Puerto Rico Sales Tax Financing Corp., Refunding RB, CAB, First Sub-Series C, 6.52%, 8/01/38 (a)		2,630		470,191

				2,369,572

Rhode Island — 0.8%
Central Falls Detention Facility Corp., Refunding RB, 7.25%, 7/15/35		2,495		2,174,542

South Carolina — 0.4%
Connector 2000 Association Inc., RB, CAB, Senior Series B, 11.47%, 1/01/14 (a)(e)(f)		1,485		195,203
South Carolina Jobs, EDA, Refunding RB, Palmetto Health, 5.50%, 8/01/26		975		1,001,072

				1,196,275

Tennessee — 0.6%
Knox County Health Educational & Housing Facilities Board Tennessee, Refunding RB, Covenant, Series A (AGM), 4.69%, 1/01/40 (a)		5,820		1,212,190
Shelby County Health Educational & Housing Facilities Board, RB, Village at Germantown, 6.25%, 12/01/34		355		313,170

				1,525,360

Texas — 9.7%
Bexar County Health Facilities Development Corp., RB, Army Retirement Residence Project, 6.20%, 7/01/45		2,985		3,072,162
Brazos River Authority, Refunding RB, Texas Utility Co., Series, AMT, 7.70%, 4/01/33		2,550		943,500
Central Texas Regional Mobility Authority, RB:
CAB, 7.56%, 1/01/29 (a)		2,000		643,340
CAB, 7.65%, 1/01/30 (a)		1,170		341,324
CAB, 7.71%, 1/01/31 (a)		2,000		542,880
CAB, 7.77%, 1/01/32 (a)		3,500		886,935
CAB, 7.78%, 1/01/33 (a)		1,540		363,394
Senior Lien, 5.75%, 1/01/25		650		686,933
City of Houston Texas, RB, Special Facilities, Continental Airlines, Series E, AMT, 6.75%, 7/01/21		2,685		2,695,982
Harris County Health Facilities Development Corp., Refunding RB, Memorial Hermann Healthcare System, Series B, 7.13%, 12/01/31		1,500		1,724,925


See Notes to Financial Statements.

20	SEMI-ANNUAL REPORT	OCTOBER 31, 2010




Schedule of Investments (continued)	BlackRock MuniAssets Fund, Inc. (MUA)
	(Percentages shown are based on Net Assets)


Municipal Bonds	Par (000)		Value

Texas (concluded)
La Vernia Higher Education Finance Corp., RB, KIPP Inc., 6.38%, 8/15/44	$	860	$	909,063
Matagorda County Navigation District No. 1 Texas, Refunding RB, Central Power & Light Co. Project, Series A, 6.30%, 11/01/29		1,240		1,370,212
North Texas Tollway Authority, RB, Toll, 2nd Tier, Series F, 6.13%, 1/01/31		2,775		2,994,086
Tarrant County Cultural Education Facilities Finance Corp., RB, Series A:
CC Young Memorial Home, 8.00%, 2/15/38		1,035		1,093,105
Senior Living Center Project, 8.25%, 11/15/44		2,490		2,518,212
Texas Private Activity Bond Surface Transportation Corp., RB, Senior Lien:
LBJ Infrastructure Group LLC, LBJ Freeway Managed Lanes Project, 7.00%, 6/30/40		2,640		2,869,627
NTE Mobility Partners LLC, North Tarrant Express Managed Lanes Project, 6.88%, 12/31/39		2,330		2,528,376
Texas State Public Finance Authority, Refunding ERB, KIPP Inc., Series A (ACA), 5.00%, 2/15/28		575		555,577

				26,739,633

U.S. Virgin Islands — 1.1%
United States Virgin Islands, Refunding RB, Senior Secured, Hovensa Coker Project, AMT, 6.50%, 7/01/21		3,000		3,052,050

Utah — 0.6%
County of Carbon Utah, Refunding RB, Laidlaw Environmental, Series A, AMT, 7.45%, 7/01/17		1,660		1,663,951

Vermont — 0.3%
Vermont Economic Development Authority, Refunding MRB, Wake Robin Corp. Project, Series A (ACA), 6.30%, 3/01/33		950		924,397

Virginia — 2.0%
Dulles Town Center Community Development Authority, Special Assessment Bonds, Dulles Town Center Project, 6.25%, 3/01/26		1,410		1,382,632
Fairfax County EDA, Refunding RB, Goodwin House Inc.:
5.13%, 10/01/37		585		583,701
5.13%, 10/01/42		450		444,060
Lexington IDA, Refunding MRB, Kendal at Lexington, Series A, 5.38%, 1/01/28		40		36,382
Tobacco Settlement Financing Corp. Virginia, Refunding RB, Senior Series B1, 5.00%, 6/01/47		4,350		3,053,961

				5,500,736

Wisconsin — 2.2%
Wisconsin Health & Educational Facilities Authority, RB:
New Castle Place Project, Series A, 7.00%, 12/01/31		1,855		1,858,395
Wheaton Franciscan Healthcare, 5.25%, 8/15/34		3,695		3,470,418
Wisconsin Health & Educational Facilities Authority, Refunding RB, St. John’s Communities Inc., Series A:
7.25%, 9/15/29		250		258,650
7.63%, 9/15/39		505		532,093

				6,119,556

Wyoming — 1.3%
County of Sweetwater Wyoming, Refunding RB, FMC Corp. Project, AMT, 5.60%, 12/01/35		3,600		3,633,048

Total Municipal Bonds — 91.5%				253,330,457


Municipal Bonds Transferred to Tender Option Bond Trusts (g)	Par (000)		Value

District of Columbia — 1.6%
District of Columbia Water & Sewer Authority, RB, Series A, 6.00%, 10/01/35	$	3,951	$	4,496,733

Florida — 3.3%
County of Miami-Dade Florida, RB, Miami International Airport, Series A, AMT (AGC), 5.25%, 10/01/33		8,870		9,019,016

Virginia — 3.2%
Virginia HDA, RB, Sub-Series H-1 (NPFGC), 5.38%, 7/01/36		8,690		8,852,156

Total Municipal Bonds Transferred to Tender Option Bond Trusts — 8.1%				22,367,905

Total Long-Term Investments (Cost — $270,850,753) — 99.6%				275,698,362




Short-Term Securities		Shares

FFI Institutional Tax-Exempt Fund, 0.12% (h)(i)		2,949,596		2,949,596

Total Short-Term Securities (Cost — $2,949,596) — 1.1%				2,949,596

*Total Investments (Cost — $273,800,349) — 100.7%**				278,647,958

Other Assets Less Liabilities — 3.2%				8,909,854

Liability for Trust Certificates, Including Interest Expense and Fees Payable — (3.9)%				(10,762,397	)

Net Assets — 100.0%			$	276,795,415


*	The cost and unrealized appreciation (depreciation) of investments as of October 31, 2010, as computed for federal income tax purposes, were as follows:


Aggregate cost	$	262,507,383

Gross unrealized appreciation	$	17,379,332
Gross unrealized depreciation		(11,994,403	)

Net unrealized appreciation	$	5,384,929


(a)	Represents a zero-coupon bond. Rate shown reflects the current yield as of report date.

(b)	Security exempt from registration under Rule 144A of the Securities Act of 1933. These securities may be resold in transactions exempt from registration to qualified institutional investors.

(c)	Security represents a beneficial interest in a trust. The collateral deposited into the trust is federally tax-exempt revenue bonds issued by various state or local governments, or their respective agencies or authorities. The security is subject to remarketing prior to its stated maturity.

(d)	Variable rate security. Rate shown is as of report date.

(e)	Issuer filed for bankruptcy and/or is in default of interest payments.

(f)	Non-income producing security.

(g)	Securities represent bonds transferred to a tender option bond trust in exchange for which the Fund acquired residual interest certificates. These securities serve as collateral in a financing transaction. See Note 1 of the Notes to Financial Statements for details of municipal bonds transferred to tender option bond trusts.

(h)	Investments in companies considered to be an affiliate of the Fund during the period, for purposes of Section 2(a)(3) of the Investment Company Act of 1940, as amended, were as follows:



Affiliate	Shares Held at April 30, 2010	Net Activity	Shares Held at October 31, 2010	Income

FFI Institutional Tax-Exempt Fund	149,925	2,799,671	2,949,596	$1,248


(i)	Represents the current yield as of report date.


See Notes to Financial Statements.

SEMI-ANNUAL REPORT	OCTOBER 31, 2010	21




Schedule of Investments (concluded)	BlackRock MuniAssets Fund, Inc. (MUA)


•	Fair Value Measurements — Various inputs are used in determining the fair value of investments, which are as follows:

	•	Level 1 — price quotations in active markets/exchanges for identical assets and liabilities

	•	Level 2 — other observable inputs (including, but not limited to: quoted prices for similar assets or liabilities in markets that are active, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the assets or liabilities (such as interest rates, yield curves, volatilities, prepayment speeds, loss severities, credit risks and default rates) or other market-corroborated inputs)

	•	Level 3 — unobservable inputs based on the best information available in the circumstances, to the extent observable inputs are not available (including the Fund’s own assumptions used in determining the fair value of investments)

	The inputs or methodologies used for valuing securities are not necessarily an indication of the risk associated with investing in those securities. For information about the Fund’s policy regarding valuation of investments and other significant accounting policies, please refer to Note 1 of the Notes to Financial Statements.

	The following table summarizes the inputs used as of October 31, 2010 in determining the fair valuation of the Fund’s investments:



Valuation Inputs	Level 1		Level 2		Level 3		Total

Assets:
Investments in Securities:
Long-Term Investments¹		—	$	275,698,362		—	$	275,698,362
Short-Term Securities	$	2,949,596		—		—		2,949,596

Total	$	2,949,596	$	275,698,362		—	$	278,647,958


	¹	See above Schedule of Investments for values in each state or political subdivision.


See Notes to Financial Statements.

22	SEMI-ANNUAL REPORT	OCTOBER 31, 2010




Schedule of Investments October 31, 2010 (Unaudited)	BlackRock MuniEnhanced Fund, Inc. (MEN)
	(Percentages shown are based on Net Assets)


Municipal Bonds	Par (000)		Value

Alabama — 1.3%
County of Jefferson Alabama, RB, Series A:
5.50%, 1/01/22	$	2,750	$	2,554,310
4.75%, 1/01/25		2,200		1,802,372

				4,356,682

Alaska — 0.4%
Borough of Matanuska-Susitna Alaska, RB, Goose Creek Correctional Center (AGC), 6.00%, 9/01/28		1,200		1,404,420

Arizona — 1.5%
State of Arizona, COP, Department of Administration, Series A (AGM):
5.00%, 10/01/27		3,250		3,402,263
5.25%, 10/01/28		1,000		1,058,350
5.00%, 10/01/29		400		413,360

				4,873,973

California — 21.1%
Alameda Corridor Transportation Authority, Refunding RB, CAB, Subordinate Lien, Series A (AMBAC) (a):
5.65%, 10/01/24		10,185		8,579,538
5.57%, 10/01/25		6,000		5,025,720
Anaheim Public Financing Authority California, RB, Senior, Public Improvements Project, Series A (AGM), 6.00%, 9/01/24		5,000		5,861,250
Antelope Valley Community College District, GO, Election of 2004, Series B (NPFGC), 5.25%, 8/01/39		600		624,150
Arcadia Unified School District California, GO, CAB, Election of 2006, Series A (AGM), 4.96%, 8/01/39 (b)		1,600		262,176
Cabrillo Community College District California, GO, CAB, Election of 2004, Series B (NPFGC), 5.18%, 8/01/37 (b)		2,400		457,224
California Health Facilities Financing Authority, Refunding RB, St. Joseph Health System, Series A, 5.75%, 7/01/39		550		584,661
California State University, RB, Systemwide, Series A (NPFGC), 5.00%, 11/01/35		1,405		1,420,146
California State University, Refunding RB, Systemwide, Series A (AGM), 5.00%, 11/01/37		2,000		2,055,860
Chino Valley Unified School District, GO, Election of 2002, Series C (NPFGC), 5.25%, 8/01/30		850		876,588
City of Redding California, COP, Refunding, Series A (AGM), 5.00%, 6/01/30		1,420		1,483,730
Fresno Unified School District California, GO, Election of 2001, Series E (AGM), 5.00%, 8/01/30		900		935,487
Los Angeles Department of Water & Power, RB, Series C (NPFGC), 5.00%, 7/01/29		5,160		5,350,662
Metropolitan Water District of Southern California, RB, Series B-1 (NPFGC):
5.00%, 10/01/29		2,965		3,075,565
5.00%, 10/01/36		1,655		1,703,392
Norco Redevelopment Agency California, Tax Allocation Bonds, Refunding, Project Area No. 1 (NPFGC), 5.13%, 3/01/30		5,000		4,783,850
Orange County Sanitation District, COP, Series B (AGM):
5.00%, 2/01/30		1,500		1,599,300
5.00%, 2/01/31		900		955,458
Poway Redevelopment Agency California, Tax Allocation Bonds, Refunding, Paguay Redevelopment Project (AMBAC), 5.13%, 6/15/33		1,750		1,629,145
Sacramento Unified School District California, GO, Election of 2002 (NPFGC), 5.00%, 7/01/30		4,150		4,285,705
San Mateo County Community College District, GO, CAB, Election of 2001, Series C (NPFGC), 5.54%, 9/01/30 (b)		12,740		4,431,864

Municipal Bonds	Par (000)		Value

California (concluded)
State of California, GO:
5.13%, 6/01/27	$	20	$	20,296
5.13%, 6/01/31		60		60,137
Stockton Public Financing Authority California, RB, Parking & Capital Projects (NPFGC), 5.13%, 9/01/30		6,145		6,228,879
Ventura County Community College District, GO, Election of 2002, Series B (NPFGC), 5.00%, 8/01/30		2,325		2,418,511
West Basin Municipal Water District California, COP, Refunding, Series B (AGC), 5.00%, 8/01/30		5,035		5,264,999

				69,974,293

Colorado — 0.6%
Colorado Health Facilities Authority, RB, Covenant Retirement Communities, Series A (Radian):
5.50%, 12/01/27		1,200		1,147,452
5.50%, 12/01/33		675		631,476
Colorado Housing & Finance Authority, Refunding RB, S/F Program, Senior Series A-2, AMT, 7.50%, 4/01/31		335		353,144

				2,132,072

District of Columbia — 1.7%
District of Columbia, RB, Series B-1 (NPFGC), 5.00%, 2/01/31		5,530		5,572,747

Florida — 12.7%
Broward County School Board Florida, COP, Series A (AGM), 5.25%, 7/01/33		1,600		1,664,384
City of Tallahassee Florida, RB (NPFGC), 5.00%, 10/01/32		4,000		4,139,320
Collier County School Board, COP (AGM), 5.00%, 2/15/23		3,000		3,202,890
County of Broward Florida, RB, Series A, 5.25%, 10/01/34		850		910,180
County of Duval Florida, COP, Master Lease Program (AGM), 5.00%, 7/01/33		3,000		3,050,850
County of Miami-Dade Florida, GO, Building Better Communities Program, Series B-1, 5.75%, 7/01/33		1,400		1,528,506
County of Miami-Dade Florida, RB, Water & Sewer System (AGM), 5.00%, 10/01/39		4,950		5,199,975
County of Miami-Dade Florida, Refunding RB, Miami International Airport, AMT (AGC), 5.00%, 10/01/40		9,900		9,853,866
County of Orange Florida, Refunding RB, Series B (NPFGC), 5.13%, 1/01/32		4,200		4,323,354
Hillsborough County Aviation Authority Florida, RB, Series A, AMT (AGC), 5.38%, 10/01/33		1,750		1,793,575
Miami-Dade County School Board, COP, Refunding, Series B (AGC):
5.25%, 5/01/31		100		105,907
5.00%, 5/01/33		2,000		2,028,740
Orange County School Board, COP, Series A (NPFGC), 5.00%, 8/01/31		2,000		2,056,200
Sarasota County Public Hospital District, RB, Sarasota Memorial Hospital Project, Series A, 5.63%, 7/01/39		275		289,325
South Florida Water Management District, COP (AGC), 5.00%, 10/01/22		2,000		2,138,740

				42,285,812

Georgia — 4.0%
Augusta-Richmond County Georgia, RB (AGM), 5.25%, 10/01/39		2,300		2,402,488
Gwinnett County Hospital Authority, Refunding RB, Gwinnett Hospital System, Series D (AGM), 5.50%, 7/01/41		825		857,794
Municipal Electric Authority of Georgia, Refunding RB, Series EE (AMBAC), 7.00%, 1/01/25		7,475		9,969,407

				13,229,689


See Notes to Financial Statements.

SEMI-ANNUAL REPORT	OCTOBER 31, 2010	23




Schedule of Investments (continued)	BlackRock MuniEnhanced Fund, Inc. (MEN)
	(Percentages shown are based on Net Assets)


Municipal Bonds	Par (000)		Value

Illinois — 21.5%
Chicago Board of Education Illinois, GO, Refunding, Series A:
(AGM), 5.50%, 12/01/31	$	3,000	$	3,495,750
Chicago School Reform Board, (NPFGC), 5.50%, 12/01/26		1,000		1,156,590
City of Chicago Illinois, ARB, General, Third Lien, Series B-2, AMT:
(AGM), 5.75%, 1/01/23		5,670		5,950,438
(Syncora), 6.00%, 1/01/29		2,500		2,612,525
City of Chicago Illinois, RB, Series A (AGC), 5.00%, 1/01/38		2,000		2,059,360
City of Chicago Illinois, Refunding RB, General Airport, Third Lien, Series A, AMT (NPFGC), 5.75%, 1/01/21		9,000		9,219,690
County of Cook Illinois, GO, Capital Improvement, Series C (AMBAC), 5.50%, 11/15/12 (c)		2,460		2,710,133
County of Cook Illinois, GO, Refunding, Series A, 5.25%, 11/15/33		1,350		1,443,460
Illinois Municipal Electric Agency, RB, Series A (NPFGC), 5.25%, 2/01/35		1,000		1,036,010
Illinois Sports Facilities Authority, RB, State Tax Supported (AMBAC), 5.50%, 6/15/30		20,120		21,313,720
Metropolitan Pier & Exposition Authority, RB, CAB, McCormick Place Expansion Project, Series A (NPFGC), 5.96%, 12/15/33 (b)		9,950		2,529,588
Metropolitan Pier & Exposition Authority, Refunding RB, CAB, McCormick Place Expansion Project, Series B (AGM) (b):
5.82%, 6/15/27		1,300		521,456
6.25%, 6/15/44		3,450		441,255
Regional Transportation Authority, RB, Series A (AMBAC), 7.20%, 11/01/20		10,115		12,524,393
State of Illinois, RB, Build Illinois, Series B, 5.25%, 6/15/34		4,275		4,473,916

				71,488,284

Indiana — 0.7%
Indiana Municipal Power Agency, RB, Series B, 5.75%, 1/01/34		400		432,780
Indianapolis Local Public Improvement Bond Bank, Refunding RB, Waterworks Project, Series A (AGC), 5.50%, 1/01/38		1,825		2,004,781

				2,437,561

Iowa — 1.9%
Iowa Finance Authority, RB, Series A (AGC), 5.63%, 8/15/37		5,725		6,248,895

Louisiana — 1.2%
Louisiana Public Facilities Authority, Refunding RB, Christus Health, Series B (AGC), 6.50%, 7/01/30		1,250		1,431,225
Rapides Finance Authority Louisiana, RB, Cleco Power LLC Project, AMT (AMBAC), 4.70%, 11/01/36 (d)		900		817,767
State of Louisiana, RB, Series A (NPFGC), 5.00%, 5/01/35		1,740		1,788,685

				4,037,677

Maryland — 0.4%
Maryland Community Development Administration, Refunding RB, Residential, Series A, AMT, 5.75%, 9/01/39		1,200		1,268,484


Municipal Bonds	Par (000)		Value

Massachusetts — 3.1%
Massachusetts HFA, RB, AMT (AGM):
Rental Mortgage, Series F, 5.25%, 1/01/46	$	2,700	$	2,719,116
S/F Housing, Series 128, 4.80%, 12/01/27 (d)		1,600		1,609,168
Massachusetts HFA, Refunding RB, Rental Housing, Series A, AMT (AGM), 5.15%, 7/01/26		2,870		2,928,232
Massachusetts Water Resources Authority, Refunding RB, General, Series A (NPFGC), 5.00%, 8/01/34		2,700		2,859,921

				10,116,437

Michigan — 5.0%
City of Detroit Michigan, RB, Series B:
Second Lien, (AGM), 6.25%, 7/01/36		400		444,916
Second Lien, (AGM), 7.00%, 7/01/36		200		234,146
Senior Lien, (AGM), 7.50%, 7/01/33		700		853,006
System, Second Lien, (NPFGC), 5.00%, 7/01/36		3,600		3,518,280
City of Detroit Michigan, Refunding RB, Second Lien, Series E (BHAC), 5.75%, 7/01/31		2,500		2,704,050
Kalamazoo Hospital Finance Authority, RB, Bronson Methodist Hospital (AGM), 5.25%, 5/15/36		425		438,511
Michigan Higher Education Student Loan Authority, Refunding RB, Student Loan, Series XVII-G, AMT (AMBAC), 5.20%, 9/01/20		1,500		1,520,625
Michigan Strategic Fund, RB, Detroit Edison Co. Project, Series C, AMT (Syncora), 5.45%, 12/15/32		4,300		4,245,304
Michigan Strategic Fund, Refunding RB, AMT (Syncora), Detroit Edison Co.:
Pollution, Series C, 5.65%, 9/01/29		1,410		1,414,230
Project, Series A, 5.50%, 6/01/30		1,300		1,300,299

				16,673,367

Minnesota — 0.9%
City of Minneapolis Minnesota, Refunding RB, Fairview Health Services, Series B (AGC), 6.50%, 11/15/38		2,500		2,848,750

Mississippi — 0.9%
Mississippi Development Bank Special Obligation, Refunding RB, Jackson Mississippi Water and Sewer System (AGM), 5.00%, 9/01/34		2,800		2,862,552

Nevada — 5.2%
City of Carson City Nevada, RB, Carson-Tahoe Hospital Project, Series A (Radian), 5.50%, 9/01/33		3,100		3,052,229
City of Las Vegas Nevada, GO, Limited Tax, Performing Arts Center, 6.00%, 4/01/34		850		950,529
County of Clark Nevada, RB:
Las Vegas-McCarran International Airport, Series A (AGC), 5.25%, 7/01/39		3,800		3,936,838
Southwest Gas Corp. Project, Series A, AMT (FGIC), 4.75%, 9/01/36		75		67,285
Southwest Gas Corp. Project, Series D, AMT (NPFGC), 5.25%, 3/01/38		1,200		1,182,432
Subordinate Lien, Series A-2 (NPFGC), 5.00%, 7/01/30		1,500		1,521,990
Subordinate Lien, Series A-2 (NPFGC), 5.00%, 7/01/36		3,200		3,209,344
System, Subordinate Lien, Series C (AGM), 5.00%, 7/01/26		1,475		1,556,656
Las Vegas Valley Water District, GO, Refunding, Series A (NPFGC), 5.00%, 6/01/24		1,600		1,693,984

				17,171,287


See Notes to Financial Statements.

24	SEMI-ANNUAL REPORT	OCTOBER 31, 2010




Schedule of Investments (continued)	BlackRock MuniEnhanced Fund, Inc. (MEN)
	(Percentages shown are based on Net Assets)


Municipal Bonds	Par (000)		Value

New Jersey — 9.0%
New Jersey EDA, RB:
Cigarette Tax (Radian), 5.50%, 6/15/31	$	600	$	584,940
Cigarette Tax (Radian), 5.75%, 6/15/34		305		296,911
Motor Vehicle Surcharge, Series A (NPFGC), 5.25%, 7/01/31		9,325		9,651,188
Motor Vehicle Surcharge, Series A (NPFGC), 5.25%, 7/01/33		7,800		8,038,056
School Facilities Construction, Series O, 5.13%, 3/01/28		2,250		2,406,668
School Facilities Construction, Series Z (AGC), 6.00%, 12/15/34		2,000		2,291,840
New Jersey EDA, Refunding RB, School Facilities Construction, Series N-1:
(AGM), 5.50%, 9/01/25		5,000		5,814,600
(NPFGC), 5.50%, 9/01/28		815		929,320

				30,013,523

New York — 3.3%
Erie County Industrial Development Agency, RB, City School District of Buffalo Project, Series A (AGM), 5.75%, 5/01/28		1,500		1,696,710
Metropolitan Transportation Authority, RB, Series 2008C, 6.50%, 11/15/28		4,000		4,724,200
New York City Transitional Finance Authority, RB, Fiscal 2009, Series S-4, 5.50%, 1/15/34		2,750		3,072,822
New York State Dormitory Authority, ERB, Series B, 5.75%, 3/15/36		1,200		1,385,112

				10,878,844

North Carolina — 0.5%
North Carolina Medical Care Commission, RB, Novant Health Obligation, Series A, 4.75%, 11/01/43 (e)		1,700		1,634,295

Ohio — 0.3%
Ohio Higher Educational Facility Commission, Refunding RB, Summa Health System, 2010 Project (AGC), 5.25%, 11/15/40		1,025		1,050,728

Pennsylvania — 1.2%
Pennsylvania HFA, Refunding RB, Series 99A, AMT, 5.25%, 10/01/32		1,500		1,536,705
Pennsylvania Turnpike Commission, RB, CAB, Sub-Series E, 6.48%, 12/01/38 (a)		2,750		2,057,715
Philadelphia School District, GO, Series E, 6.00%, 9/01/38		400		436,204

				4,030,624

Puerto Rico — 1.9%
Puerto Rico Sales Tax Financing Corp., RB, First Sub-Series A, 6.38%, 8/01/39		3,200		3,657,376
Puerto Rico Sales Tax Financing Corp., Refunding RB:
CAB, Series A (NPFGC), 5.70%, 8/01/41 (b)		8,500		1,365,355
First Sub-Series C, 6.00%, 8/01/39		1,180		1,328,350

				6,351,081

Rhode Island — 2.1%
Providence Public Building Authority Rhode Island, RB, Series A (AGM), 6.25%, 12/15/10 (c)		4,345		4,421,690
Rhode Island Health & Educational Building Corp., Refunding RB, Public Schools Financing Program, Series E (AGC), 6.00%, 5/15/29		2,375		2,668,336

				7,090,026


Municipal Bonds	Par (000)		Value

Tennessee — 1.8%
Knox County Health Educational & Housing Facilities Board Tennessee, Refunding RB, Covenant Health, Series A, 5.04%, 1/01/38 (b)	$	600	$	123,684
Metropolitan Government of Nashville & Davidson County Health & Educational Facilities Board, Refunding RB, Vanderbilt University, Series B, 5.50%, 10/01/29		5,000		5,789,600

				5,913,284

Texas — 12.8%
City of Houston Texas, Refunding RB, Combined, First Lien, Series A (AGC):
6.00%, 11/15/35		2,100		2,432,682
5.38%, 11/15/38		1,350		1,482,179
Dallas-Fort Worth International Airport Facilities Improvement Corp., RB, Series A, AMT (NPFGC), 5.50%, 11/01/33		13,000		13,171,990
Lewisville ISD Texas, GO, Refunding, CAB, School Building (NPFGC), 4.67%, 8/15/24 (b)		4,475		2,396,228
Mansfield ISD Texas, GO, School Building (PSF-GTD), 5.00%, 2/15/33		1,725		1,840,816
Matagorda County Navigation District No. 1 Texas, Refunding RB, Central Power & Light Co. Project, AMT (NPFGC), 5.20%, 5/01/30 (d)		2,400		2,437,104
North Texas Tollway Authority, RB (AGC), System, First Tier:
Series K-1, 5.75%, 1/01/38		3,800		4,206,410
Series K-2, 6.00%, 1/01/38		4,015		4,536,950
North Texas Tollway Authority, Refunding RB First Tier:
Series A, 6.00%, 1/01/28		2,795		3,123,385
System, (NPFGC), 5.75%, 1/01/40		1,600		1,697,168
Texas State Turnpike Authority, RB, First Tier, Series A (AMBAC), 5.50%, 8/15/39		5,150		5,224,520

				42,549,432

Utah — 1.6%
Utah Transit Authority, RB, Series A (AGM), 5.00%, 6/15/36		5,000		5,332,450

Virginia — 0.6%
Virginia HDA, RB, Sub-Series H-1 (NPFGC), 5.35%, 7/01/31		1,955		1,969,506

Washington — 1.4%
Washington Health Care Facilities Authority, RB, Providence Health & Services, Series A:
5.00%, 10/01/39		900		930,726
5.25%, 10/01/39		625		658,200
Washington Health Care Facilities Authority, Refunding RB, Providence Health, Series D (AGM), 5.25%, 10/01/33		2,800		2,990,820

				4,579,746

Wisconsin — 1.0%
Wisconsin Health & Educational Facilities Authority, RB, Ascension Health Senior Credit Group, 5.00%, 11/15/33		1,375		1,432,956
Wisconsin Housing & EDA, Refunding RB, Series E, AMT, 5.50%, 9/01/38		1,800		1,937,268

				3,370,224

Total Municipal Bonds — 121.6%				403,746,745


See Notes to Financial Statements.

SEMI-ANNUAL REPORT	OCTOBER 31, 2010	25




Schedule of Investments (continued)	BlackRock MuniEnhanced Fund, Inc. (MEN)
	(Percentages shown are based on Net Assets)


Municipal Bonds Transferred to Tender Option Bond Trusts (f)	Par (000)		Value

Arizona — 0.4%
Phoenix Civic Improvement Corp., RB, Junior Lien, Series A, 5.00%, 7/01/34	$	1,200	$	1,282,608
California — 5.2%
Anaheim Public Financing Authority California, RB, Electric System Distribution Facilities, Series A (AGM), 5.00%, 10/01/31		959		966,449
Los Angeles Community College District California, GO, Election of 2001, Series A (AGM), 5.00%, 8/01/32		2,500		2,622,425
Orange County Sanitation District, COP (NPFGC), 5.00%, 2/01/33		7,458		7,625,172
San Diego Community College District California, GO, Election of 2002, 5.25%, 8/01/33		404		437,973
San Diego County Water Authority, COP, Refunding, Series 2008-A (AGM), 5.00%, 5/01/33		2,810		2,962,695
Tamalpais Union High School District California, GO, Election of 2001 (AGM), 5.00%, 8/01/28		1,605		1,688,412
University of California, RB, Series O, 5.75%, 5/15/34		840		957,886

				17,261,012

Colorado — 0.3%
Colorado Health Facilities Authority, Refunding RB, Catholic Healthcare, Series A, 5.50%, 7/01/34		900		969,088

District of Columbia — 1.0%
District of Columbia, RB, Series A, 5.50%, 12/01/30		1,005		1,151,026
District of Columbia Water & Sewer Authority, RB, Series A, 6.00%, 10/01/35		1,770		2,014,992

				3,166,018

Florida — 5.8%
City of Tallahassee Florida, RB (NPFGC), 5.00%, 10/01/37		7,500		7,711,650
Florida State Board of Education, GO, Series D, 5.00%, 6/01/37		1,349		1,414,672
Miami-Dade County School Board, COP, Refunding, Series B (AGC), 5.00%, 5/01/33		10,000		10,143,700

				19,270,022

Georgia — 5.4%
City of Atlanta Georgia, RB, General, Series B (AGM), 5.25%, 1/01/33		17,356		17,921,700

Illinois — 0.6%
Illinois State Toll Highway Authority, RB, Series B, 5.50%, 1/01/33		1,880		2,031,973

Louisiana — 1.7%
State of Louisiana, RB, Series A (AGM), 5.00%, 5/01/36		5,400		5,629,230

Massachusetts — 3.4%
Massachusetts School Building Authority, RB, Series A (AGM), 5.00%, 8/15/30		10,600		11,216,981

Nevada — 3.4%
City of Las Vegas Nevada, GO, Limited Tax, Performing Arts Center, 6.00%, 4/01/39		3,778		4,201,606
Clark County Water Reclamation District, GO, Series B:
5.50%, 7/01/29		4,499		5,030,795
5.75%, 7/01/34		1,829		2,061,968

				11,294,369

New Hampshire — 2.3%
New Hampshire Health & Education Facilities Authority, RB, Dartmouth-Hitchcock Obligation (AGM), 5.50%, 8/01/27		7,390		7,761,495


Municipal Bonds Transferred to Tender Option Bond Trusts (f)	Par (000)		Value

New York — 1.8%
New York City Municipal Water Finance Authority, RB, Fiscal 2009, Series A, 5.75%, 6/15/40	$	1,260	$	1,438,918
New York State Thruway Authority, RB, Series G (AGM), 5.00%, 1/01/32		3,100		3,233,424
Triborough Bridge & Tunnel Authority, RB, General, Series A-2, 5.25%, 11/15/34		1,300		1,420,159

				6,092,501

Ohio — 0.2%
State of Ohio, RB, Cleveland Clinic Health, Series B, 5.50%, 1/01/34		580		628,326

South Carolina — 2.7%
Charleston Educational Excellence Finance Corp., RB, Charleston County School (AGC):
5.25%, 12/01/28		3,120		3,363,079
5.25%, 12/01/29		2,765		2,955,149
5.25%, 12/01/30		1,010		1,073,519
South Carolina State Public Service Authority, RB, Santee Cooper, Series A, 5.50%, 1/01/38		1,275		1,415,569

				8,807,316

Texas — 0.7%
Clear Creek ISD Texas, GO, Refunding, School Building (PSF-GTD), 5.00%, 2/15/33		2,200		2,421,562

Virginia — 0.1%
Fairfax County IDA Virginia, Refunding RB, Health Care, Inova Health System, Series A, 5.50%, 5/15/35		350		380,818

Washington — 1.3%
Central Puget Sound Regional Transit Authority, RB, Series A (AGM), 5.00%, 11/01/32		4,004		4,224,228

Wisconsin — 0.4%
Wisconsin Health & Educational Facilities Authority, Refunding RB, Froedtert & Community Health Inc., 5.25%, 4/01/39		1,430		1,504,115

Total Municipal Bonds Transferred to Tender Option Bond Trusts — 36.7%				121,863,362

Total Long-Term Investments (Cost — $505,115,498) — 158.3%				525,610,107


Short-Term Securities		Shares

FFI Institutional Tax-Exempt Fund, 0.13% (g)(h)		6,417,821		6,417,821

Total Short-Term Securities (Cost — $6,417,821) — 2.0%				6,417,821

*Total Investments (Cost — $511,533,319) — 160.3%**				532,027,928

Other Assets Less Liabilities — 1.3%				4,159,303

Liability for Trust Certificates, Including Interest Expense and Fees Payable — (18.6)%				(61,643,192	)

Preferred Shares, at Redemption Value — (43.0)%				(142,601,192	)

Net Assets Applicable to Common Shares — 100.0%			$	331,942,847


See Notes to Financial Statements.

26	SEMI-ANNUAL REPORT	OCTOBER 31, 2010




Schedule of Investments (concluded)	BlackRock MuniEnhanced Fund, Inc. (MEN)


*	The cost and unrealized appreciation (depreciation) of investments as of October 31, 2010, as computed for federal income tax purposes, were as follows:


Aggregate cost	$	450,680,035

Gross unrealized appreciation	$	23,575,034
Gross unrealized depreciation		(3,810,048	)

Net unrealized appreciation	$	19,764,986


(a)	Represents a step-up bond that pays an initial coupon rate for the first period and then a higher coupon rate for the following periods. Rate shown reflects the current yield as of report date.

(b)	Represents a zero-coupon bond. Rate shown reflects the current yield as of report date.

(c)	US government securities, held in escrow, are used to pay interest on this security as well as to retire the bond in full at the date indicated, typically at a premium to par.

(d)	Variable rate security. Rate shown is as of report date.

(e)	When-issued security. Unsettled when-issued transactions were as follows:



Counterparty	Unrealized Value	Appreciation

JPMorgan Chase & Co.	$1,634,295	$2,652


(f)	Securities represent bonds transferred to a tender option bond trust in exchange for which the Fund acquired residual interest certificates. These securities serve as collateral in a financing transaction. See Note 1 of the Notes to Financial Statements for details of municipal bonds transferred to tender option bond trusts.

(g)	Investments in companies considered to be an affiliate of the Fund during the period, for purposes of Section 2(a)(3) of the Investment Company Act of 1940, as amended, were as follows:



Affiliate	Shares Held at April 30, 2010	Net Activity	Shares Held at October 31, 2010	Income

FFI Institutional Tax-Exempt Fund	7,207,423	(789,602)	6,417,821	$5,978


(h)	Represents the current yield as of report date.

•	Fair Value Measurements — Various inputs are used in determining the fair value of investments, which are as follows:

	•	Level 1 — price quotations in active markets/exchanges for identical assets and liabilities

	•	Level 2 — other observable inputs (including, but not limited to: quoted prices for similar assets or liabilities in markets that are active, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the assets or liabilities (such as interest rates, yield curves, volatilities, prepayment speeds, loss severities, credit risks and default rates) or other market-corroborated inputs)

	•	Level 3 — unobservable inputs based on the best information available in the circumstances, to the extent observable inputs are not available (including the Fund’s own assumptions used in determining the fair value of investments)

	The inputs or methodologies used for valuing securities are not necessarily an indication of the risk associated with investing in those securities. For information about the Fund’s policy regarding valuation of investments and other significant accounting policies, please refer to Note 1 of the Notes to Financial Statements.

	The following table summarizes the inputs used as of October 31, 2010 in determining the fair valuation of the Fund’s investments:



Valuation Inputs	Level 1		Level 2		Level 3		Total

Assets:
Investments in Securities:
Long-Term Investments¹		—	$	525,610,107		—	$	525,610,107
Short-Term Securities	$	6,417,821		—		—		6,417,821

Total	$	6,417,821	$	525,610,107		—	$	532,027,928


	¹	See above Schedule of Investments for values in each state or political subdivision.


See Notes to Financial Statements.

SEMI-ANNUAL REPORT	OCTOBER 31, 2010	27




Schedule of Investments October 31, 2010 (Unaudited)	BlackRock MuniHoldings Fund, Inc. (MHD)
	(Percentages shown are based on Net Assets)


Municipal Bonds	Par (000)		Value

Alabama — 1.7%
County of Jefferson Alabama, RB, Series A, 5.00%, 1/01/24	$	4,550	$	3,970,011

Arizona — 5.0%
Maricopa County IDA Arizona, RB, Arizona Charter Schools Project, Series A, 6.75%, 7/01/29		2,200		1,528,758
Maricopa County Pollution Control Corp., Refunding RB, Southern California Edison Co., Series A, 5.00%, 6/01/35		1,185		1,211,224
Phoenix IDA Arizona, Refunding RB, America West Airlines Inc. Project, AMT, 6.30%, 4/01/23		2,215		1,945,523
Pima County IDA, Refunding IDRB, Tucson Electric Power, 5.75%, 9/01/29		770		795,703
Salt River Project Agricultural Improvement & Power District, RB, Series A, 5.00%, 1/01/38		1,370		1,444,994
Salt Verde Financial Corp., RB, Senior:
5.00%, 12/01/32		2,000		1,932,440
5.00%, 12/01/37		2,360		2,219,957
Show Low Improvement District, Special Assessment Bonds, District No. 5, 6.38%, 1/01/15		305		305,427

				11,384,026

California — 14.8%
Agua Caliente Band of Cahuilla Indians, RB, 5.60%, 7/01/13 (a)		255		252,399
California Health Facilities Financing Authority,
Refunding RB, St. Joseph Health System, Series A, 5.75%, 7/01/39		1,530		1,626,421
California State Public Works Board, RB, Various Capital Projects, Sub-Series I-1, 6.38%, 11/01/34		820		898,777
California Statewide Communities Development Authority, RB:
Health Facility, Memorial Health Services, Series A, 6.00%, 10/01/23		3,870		4,081,650
John Muir Health, 5.13%, 7/01/39		1,510		1,516,720
Los Angeles Department of Airports, RB, Series A, 5.25%, 5/15/39		555		585,292
Los Angeles Department of Airports, Refunding RB, Senior, Los Angeles International Airport, Series A, 5.00%, 5/15/40		4,115		4,266,679
Montebello Unified School District California, GO, CAB (NPFGC) (b):
5.63%, 8/01/22		2,405		1,258,031
5.62%, 8/01/23		2,455		1,202,115
San Diego Unified School District California, GO, CAB, Election of 2008, Series A, 6.06%, 7/01/29 (b)		3,475		1,188,346
San Francisco City & County Public Utilities Commission, RB, Series B, 5.00%, 11/01/39		6,600		6,992,502
State of California, GO, Various Purpose, 6.50%, 4/01/33		8,370		9,840,358

				33,709,290

Colorado — 3.4%
Colorado Educational & Cultural Facilities Authority, RB, Charter School, Colorado Springs, 5.50%, 7/01/40		1,455		1,478,891
Colorado Health Facilities Authority, Refunding RB, Sisters of Leavenworth, Series A, 5.00%, 1/01/40		1,525		1,554,112
Elk Valley Public Improvement Corp., RB, Public Improvement Fee, Series A, 7.35%, 9/01/31		2,645		2,533,196
Plaza Metropolitan District No. 1 Colorado, Tax Allocation Bonds, Subordinate Public Improvement Fee, Tax Increment, 8.13%, 12/01/25		1,000		929,880
University of Colorado, RB, Series A, 5.38%, 6/01/38		1,250		1,360,575

				7,856,654


Municipal Bonds	Par (000)		Value

Connecticut — 2.8%
Connecticut State Development Authority, RB, AFCO Cargo BDL LLC Project, AMT, 8.00%, 4/01/30	$	2,735	$	2,657,517
Connecticut State Health & Educational Facility Authority, RB:
Ascension Health Senior Credit, 5.00%, 11/15/40		955		1,000,257
Wesleyan University, 5.00%, 7/01/35		2,515		2,719,143

				6,376,917

Delaware — 1.2%
Delaware State EDA, RB, Exempt Facilities, Indian River Power, 5.38%, 10/01/45		2,830		2,818,793

District of Columbia — 2.2%
Metropolitan Washington Airports Authority, RB:
CAB, 2nd Senior Lien, Series B (AGC), 7.10%, 10/01/35 (b)		13,485		2,987,332
First Senior Lien, Series A, 5.00%, 10/01/39		505		525,367
First Senior Lien, Series A, 5.25%, 10/01/44		1,470		1,551,335

				5,064,034

Florida — 7.6%
City of Clearwater Florida, RB, Series A, 5.25%, 12/01/39		1,195		1,271,384
County of Broward Florida, RB, Series A, 5.25%, 10/01/34		750		803,100
County of Miami-Dade Florida, RB:
CAB, Sub-Series A (NPFGC), 5.24%, 10/01/37 (b)		2,340		394,618
Water & Sewer System, 5.00%, 10/01/34		3,935		4,097,319
County of Miami-Dade Florida, Refunding RB, Miami International Airport, Series A-1, 5.38%, 10/01/41		2,620		2,704,285
Greater Orlando Aviation Authority Florida, RB, Special Purpose, JetBlue Airways Corp., AMT, 6.50%, 11/15/36		2,095		2,038,582
Hillsborough County IDA, RB, National Gypsum Co., Series B, AMT, 7.13%, 4/01/30		1,900		1,852,158
Midtown Miami Community Development District, Special Assessment Bonds, Series B, 6.50%, 5/01/37		2,450		2,459,089
Palm Coast Park Community Development District, Special Assessment Bonds, 5.70%, 5/01/37		675		421,423
Preserve at Wilderness Lake Community Development District, Special Assessment Bonds, Series A, 5.90%, 5/01/34		1,535		1,369,097

				17,411,055

Georgia — 1.4%
De Kalb Private Hospital Authority, Refunding RB, Children’s Healthcare, 5.25%, 11/15/39		585		615,514
Metropolitan Atlanta Rapid Transit Authority, RB, Third Series, 5.00%, 7/01/39		2,410		2,585,014

				3,200,528

Guam — 0.7%
Territory of Guam, GO, Series A:
6.00%, 11/15/19		440		470,369
6.75%, 11/15/29		630		697,813
7.00%, 11/15/39		430		481,776

				1,649,958


See Notes to Financial Statements.

28	SEMI-ANNUAL REPORT	OCTOBER 31, 2010




Schedule of Investments (continued)	BlackRock MuniHoldings Fund, Inc. (MHD)
	(Percentages shown are based on Net Assets)


Municipal Bonds	Par (000)		Value

Illinois — 5.3%
City of Chicago Illinois, Special Assessment Bonds, Lake Shore East, 6.75%, 12/01/32	$	1,200	$	1,178,304
Illinois Finance Authority, RB, Navistar International, Recovery Zone, 6.50%, 10/15/40		1,070		1,110,136
Illinois Finance Authority, Refunding RB, Central DuPage Health, Series B, 5.50%, 11/01/39		1,115		1,184,085
Illinois HDA, RB, Homeowner Mortgage, Sub-Series C2, AMT, 5.35%, 2/01/27		2,730		2,764,398
Metropolitan Pier & Exposition Authority, Refunding RB, McCormick Place Expansion Project (AGM):
CAB, Series B, 6.25%, 6/15/47 (b)		13,220		1,392,462
Series B, 5.00%, 6/15/50		2,190		2,186,124
Series B-2, 5.00%, 6/15/50		1,740		1,713,326
State of Illinois, RB, Build Illinois, Series B, 5.25%, 6/15/34		440		460,473

				11,989,308

Indiana — 1.7%
Indiana Finance Authority, RB, Sisters of St. Francis Health, 5.25%, 11/01/39		585		609,272
Indiana Finance Authority, Refunding RB, Parkview Health System, Series A, 5.75%, 5/01/31		2,300		2,424,844
Indiana Municipal Power Agency, RB, Series B, 6.00%, 1/01/39		775		852,035

				3,886,151

Kansas — 1.7%
Kansas Development Finance Authority, Refunding RB:
Adventist Health, 5.75%, 11/15/38		2,465		2,724,589
Sisters of Leavenworth, Series A, 5.00%, 1/01/40		1,155		1,187,444

				3,912,033

Kentucky — 0.6%
Kentucky Economic Development Finance Authority, Refunding RB, Owensboro Medical Health System, Series A, 6.38%, 6/01/40		700		741,916
Louisville & Jefferson County Metropolitan Sewer District Kentucky, RB, Series A (NPFGC), 5.50%, 5/15/34		700		733,390

				1,475,306

Louisiana — 2.1%
East Baton Rouge Sewerage Commission, RB, Series A, 5.25%, 2/01/39		570		608,891
Louisiana Local Government Environmental Facilities & Community Development Authority, RB, Westlake Chemical Corp. Projects, 6.75%, 11/01/32		3,500		3,713,360
New Orleans Aviation Board, Refunding RB, Passenger Facility Charge, Series A, 5.25%, 1/01/41		430		435,590

				4,757,841

Maine — 0.1%
Maine Health & Higher Educational Facilities Authority, RB, Series A, 5.00%, 7/01/39		210		218,299

Maryland — 1.3%
Maryland EDC, RB, Transportation Facilities Project, Series A, 5.75%, 6/01/35		300		312,549
Maryland EDC, Refunding RB, CNX Marine Terminals, Inc., 5.75%, 9/01/25		580		592,180
Maryland State Energy Financing Administration, RB, Cogeneration, AES Warrior Run, AMT, 7.40%, 9/01/19		1,970		1,971,044

				2,875,773


Municipal Bonds	Par (000)		Value

Massachusetts — 2.4%
Massachusetts Development Finance Agency, Refunding RB, Boston University, Series P, 5.45%, 5/15/59	$	1,165	$	1,260,390
Massachusetts HFA, RB, M/F Housing, Series A, AMT, 5.25%, 12/01/48		2,900		2,867,317
Massachusetts Health & Educational Facilities Authority, Refunding RB, Partners Healthcare, Series J1, 5.00%, 7/01/39		1,255		1,290,492

				5,418,199

Michigan — 3.6%
City of Detroit Michigan, RB, Senior Lien, Series B (AGM), 7.50%, 7/01/33		635		773,798
Flint Hospital Building Authority Michigan, Refunding RB, Hurley Medical Center (ACA), 6.00%, 7/01/20		1,245		1,242,161
Kalamazoo Hospital Finance Authority, Refunding RB, Bronson Methodist Hospital, 5.50%, 5/15/36		955		978,484
Michigan State Hospital Finance Authority, Refunding RB, Hospital, Henry Ford Health, 5.75%, 11/15/39		2,105		2,176,886
Michigan Strategic Fund, Refunding RB, Detroit Edison Co., Pollution, Series B, AMT, 5.65%, 9/01/29		3,000		3,010,950

				8,182,279

Minnesota — 1.1%
City of Minneapolis Minnesota, Refunding RB, Fairview Health Services, Series A, 6.75%, 11/15/32		2,135		2,434,519

Mississippi — 0.7%
Mississippi Development Bank Special Obligation, Refunding RB, Gulfport Water & Sewer System Project (AGM):
5.25%, 7/01/17		395		448,700
5.25%, 7/01/19		485		538,413
University of Southern Mississippi, RB, Campus Facilities Improvements Project, 5.38%, 9/01/36		675		732,504

				1,719,617

Montana — 0.7%
Montana Facility Finance Authority, Refunding RB, Sisters of Leavenworth, Series A, 4.75%, 1/01/40		1,575		1,629,369

New Hampshire — 1.4%
New Hampshire Health & Education Facilities Authority, Refunding RB, Dartmouth-Hitchcock, 6.00%, 8/01/38		3,035		3,270,121

New Jersey — 6.4%
New Jersey EDA, RB:
Cigarette Tax, 5.75%, 6/15/29		5,385		5,299,971
Continental Airlines Inc. Project, AMT, 6.63%, 9/15/12		1,000		1,013,510
Continental Airlines Inc. Project, AMT, 6.25%, 9/15/29		2,950		2,890,882
New Jersey State Turnpike Authority, RB, Series C (AGM), 5.00%, 1/01/30		3,500		3,678,395
Tobacco Settlement Financing Corp. New Jersey, Refunding RB, Series 1A, 4.50%, 6/01/23		1,770		1,656,507

				14,539,265


See Notes to Financial Statements.

SEMI-ANNUAL REPORT	OCTOBER 31, 2010	29




Schedule of Investments (continued)	BlackRock MuniHoldings Fund, Inc. (MHD)
	(Percentages shown are based on Net Assets)


Municipal Bonds	Par (000)		Value

New York — 3.5%
City of Troy New York, Refunding RB, Rensselaer Polytechnic, Series A, 5.13%, 9/01/40	$	950	$	982,965
Dutchess County Industrial Development Agency New York, Refunding RB, St. Francis Hospital, Series A, 7.50%, 3/01/29		1,100		1,105,379
Long Island Power Authority, Refunding RB, Series A, 5.75%, 4/01/39		1,450		1,608,862
Metropolitan Transportation Authority, Refunding RB, Series B, 5.00%, 11/15/34		1,740		1,851,899
New York City Industrial Development Agency, RB:
Continental Airlines Inc. Project, AMT, 8.00%, 11/01/12		300		304,962
Continental Airlines Inc. Project, Mandatory Put Bonds, AMT, 8.38%, 11/01/16		725		735,266
Series C, 6.80%, 6/01/28		535		561,825
New York Liberty Development Corp., Refunding RB, Second Priority, Bank of America Tower at One Bryant Park Project, 6.38%, 7/15/49		850		910,716

				8,061,874

North Carolina — 2.1%
North Carolina Capital Facilities Finance Agency, RB, Duke Energy Carolinas, Series B, 4.38%, 10/01/31		1,120		1,098,138
North Carolina Capital Facilities Finance Agency, Refunding RB, Duke Energy Carolinas, Series A, 4.63%, 11/01/40		1,875		1,824,562
North Carolina Medical Care Commission, RB, Duke University Health System, Series A, 5.00%, 6/01/42		970		1,009,809
North Carolina Municipal Power Agency No. 1 Catawba, Refunding RB, Series A, 5.00%, 1/01/30		740		778,458

				4,710,967

Ohio — 0.8%
Buckeye Tobacco Settlement Financing Authority, RB, Asset-Backed, Senior Series A-2, 6.50%, 6/01/47		2,160		1,806,106

Pennsylvania — 8.3%
Allegheny County Hospital Development Authority, Refunding RB, Health System, West Penn, Series A, 5.38%, 11/15/40		1,510		1,162,398
Bucks County IDA, RB, Ann’s Choice Inc. Facility, Series A, 6.25%, 1/01/35		1,700		1,670,913
Montgomery County Higher Education & Health Authority, Refunding RB, Abington Memorial Hospital, Series A, 5.13%, 6/01/33		795		806,822
Pennsylvania Economic Development Financing Authority, RB:
American Water Co. Project, 6.20%, 4/01/39		2,520		2,772,932
Aqua Pennsylvania Inc. Project, 5.00%, 11/15/40		1,315		1,355,489
National Gypsum Co., Series B, AMT, 6.13%, 11/01/27		3,500		3,081,400
Pennsylvania Turnpike Commission, RB, Sub-Series B, 5.25%, 6/01/39		4,775		4,964,090
Philadelphia Authority for Industrial Development, RB:
Arbor House Inc. Project, Series E, 6.10%, 7/01/33		1,105		1,103,541
Commercial Development, AMT, 7.75%, 12/01/17		725		725,928
Saligman House Project, Series C (HUD), 6.10%, 7/01/33		1,245		1,243,357

				18,886,870


Municipal Bonds	Par (000)		Value

Puerto Rico — 3.7%
Commonwealth of Puerto Rico, GO, Refunding, Public Improvement, Series C, 6.00%, 7/01/39	$	2,070	$	2,275,178
Puerto Rico Industrial Medical & Environmental Pollution Control Facilities Financing Authority, RB, Special Facilities, American Airlines, Series A, 6.45%, 12/01/25		1,205		1,132,760
Puerto Rico Sales Tax Financing Corp., RB, First Sub-Series A, 6.50%, 8/01/44		3,860		4,443,401
Puerto Rico Sales Tax Financing Corp., Refunding RB, CAB, First Sub-Series C, 6.52%, 8/01/38 (b)		2,975		531,871

				8,383,210

Tennessee — 2.8%
Educational Funding of the South Inc., RB, Senior, Sub-Series B, AMT, 6.20%, 12/01/21		2,685		2,688,329
Hardeman County Correctional Facilities Corp. Tennessee, RB, 7.75%, 8/01/17		3,025		3,011,146
Rutherford County Health & Educational Facilities Board, RB, Ascension Health Senior Credit Group, 5.00%, 11/15/40		710		746,899

				6,446,374

Texas — 12.5%
Brazos River Authority, Refunding RB, TXU Electric Co. Project, Series C, Mandatory Put Bonds, AMT, 5.75%, 5/01/36 (c)		2,570		2,441,500
Brazos River Harbor Navigation District, Refunding RB, Dow Chemical Co. Project, Series A7, AMT, 6.63%, 5/15/33		3,655		3,751,309
City of Dallas Texas, Refunding RB, 5.00%, 10/01/35		1,050		1,129,916
City of Houston Texas, RB, Senior Lien, Series A, 5.50%, 7/01/39		1,070		1,156,360
Harris County Health Facilities Development Corp., Refunding RB, Memorial Hermann Healthcare System, Series B, 7.25%, 12/01/35		1,910		2,192,928
La Vernia Higher Education Finance Corp., RB, KIPP Inc., 6.38%, 8/15/44		820		866,781
Matagorda County Hospital District Texas, RB (FHA), 5.00%, 2/15/35		3,750		3,788,288
North Texas Tollway Authority, RB, Toll, 2nd Tier, Series F, 6.13%, 1/01/31		4,190		4,520,800
San Antonio Energy Acquisition Public Facility Corp., RB, Gas Supply:
5.50%, 8/01/24		1,100		1,189,485
5.50%, 8/01/25		1,120		1,208,290
Texas Department of Housing & Community Affairs, RB, Series A, AMT (Ginnie Mae), 5.70%, 1/01/33		35		35,073
Texas Private Activity Bond Surface Transportation Corp., RB, Senior Lien:
LBJ Infrastructure Group LLC, LBJ Freeway Managed Lanes Project, 7.00%, 6/30/40		2,990		3,250,070
NTE Mobility Partners LLC, North Tarrant Express Managed Lanes Project, 6.88%, 12/31/39		2,695		2,924,452

				28,455,252

Utah — 1.1%
City of Riverton Utah, RB, IHC Health Services Inc., 5.00%, 8/15/41		2,525		2,624,990

U.S. Virgin Islands — 1.5%
United States Virgin Islands, Refunding RB, Senior Secured, Hovensa Coker Project, AMT, 6.50%, 7/01/21		3,460		3,520,031

Vermont — 1.1%
Vermont Educational & Health Buildings Financing Agency, RB, Developmental & Mental Health, Series A, 6.00%, 6/15/17		2,370		2,410,835


See Notes to Financial Statements.

30	SEMI-ANNUAL REPORT	OCTOBER 31, 2010




Schedule of Investments (continued)	BlackRock MuniHoldings Fund, Inc. (MHD)
	(Percentages shown are based on Net Assets)


Municipal Bonds	Par (000)		Value

Virginia — 2.1%
Tobacco Settlement Financing Corp. Virginia, Refunding RB, Senior Series B1, 5.00%, 6/01/47	$	3,990	$	2,801,219
Virginia HDA, RB, Sub-Series H-1 (NPFGC), 5.35%, 7/01/31		2,025		2,040,026

				4,841,245

Washington — 0.6%
Seattle Housing Authority Washington, HRB, Replacement Housing Projects, 6.13%, 12/01/32		1,305		1,270,287

Wisconsin — 4.4%
State of Wisconsin, Refunding RB, Series A, 6.00%, 5/01/36		4,980		5,665,198
Wisconsin Health & Educational Facilities Authority, RB:
Ascension Health Senior Credit Group, 5.00%, 11/15/33		1,710		1,782,077
New Castle Place Project, Series A, 7.00%, 12/01/31		825		826,510
SynergyHealth Inc., 6.00%, 11/15/32		1,755		1,816,845

				10,090,630

Wyoming — 0.1%
Wyoming Municipal Power Agency, RB, Series A, 5.00%, 1/01/42		210		213,081

Total Municipal Bonds — 114.5%				261,471,098




Municipal Bonds Transferred to Tender Option Bond Trusts (d)

California — 4.7%
Bay Area Toll Authority, Refunding RB, San Francisco Bay Area, Series F-1, 5.63%, 4/01/44	2,270	2,519,900
California Educational Facilities Authority, RB, University of Southern California, Series A, 5.25%, 10/01/39	1,845	1,997,600
Los Angeles Community College District California, GO, Election of 2001, Series A (AGM), 5.00%, 8/01/32	1,620	1,699,331
San Diego Community College District California, GO, Election of 2002, 5.25%, 8/01/33	748	811,061
Sequoia Union High School District California, GO, Refunding, Election of 2004, Series B (AGM), 5.50%, 7/01/35	3,494	3,699,633

		10,727,525

Colorado — 2.6%
Colorado Health Facilities Authority, RB (AGM), Catholic Health:
Series C-3, 5.10%, 10/01/41	2,580	2,652,808
Series C-7, 5.00%, 9/01/36	1,650	1,695,705
Colorado Health Facilities Authority, Refunding RB, Catholic Healthcare, Series A, 5.50%, 7/01/34	1,490	1,604,379

		5,952,892

Connecticut — 3.0%
Connecticut State Health & Educational Facility Authority, RB, Yale University:
Series T-1, 4.70%, 7/01/29	3,180	3,414,175
Series X-3, 4.85%, 7/01/37	3,270	3,450,799

		6,864,974

Georgia — 1.1%
Private Colleges & Universities Authority, Refunding RB, Emory University, Series C, 5.00%, 9/01/38	2,259	2,397,420


Municipal Bonds Transferred to Tender Option Bond Trusts (d)	Par (000)		Value

Massachusetts — 2.3%
Massachusetts School Building Authority, RB, Series A (AGM), 5.00%, 8/15/30	$	4,994	$	5,284,901

New Hampshire — 0.7%
New Hampshire Health & Education Facilities Authority, Refunding RB, Dartmouth College, 5.25%, 6/01/39		1,409		1,549,195

New York — 4.4%
New York City Municipal Water Finance Authority, RB, Series FF-2, 5.50%, 6/15/40		1,110		1,252,571
New York State Dormitory Authority, ERB, Series F, 5.00%, 3/15/35		4,035		4,214,809
Sales Tax Asset Receivable Corp., RB, Series A (AMBAC), 5.25%, 10/15/27		4,240		4,682,364

				10,149,744

North Carolina — 0.5%
North Carolina Capital Facilities Finance Agency, Refunding RB, Wake Forest University, 5.00%, 1/01/38		1,080		1,143,018

Ohio — 4.6%
State of Ohio, Refunding RB, Cleveland Clinic Health, Series A, 5.50%, 1/01/39		9,650		10,391,989

Tennessee — 1.0%
Shelby County Health Educational & Housing Facilities Board, Refunding RB, St. Jude’s Children’s Research Hospital, 5.00%, 7/01/31		2,250		2,353,748

Texas — 2.1%
County of Harris Texas, RB, Senior Lien, Toll Road, Series A, 5.00%, 8/15/38		4,620		4,851,000

Virginia — 7.6%
University of Virginia, Refunding RB, General, 5.00%, 6/01/40		3,750		4,021,125
Virginia HDA, RB, Sub-Series H-1 (NPFGC), 5.38%, 7/01/36		10,940		11,144,140
Virginia Small Business Financing Authority, Refunding RB, Sentara Healthcare, 5.00%, 11/01/40		2,094		2,206,166

				17,371,431

Washington — 0.9%
Central Puget Sound Regional Transit Authority, RB, Series A (AGM), 5.00%, 11/01/32		1,860		1,961,814

Wisconsin — 1.8%
Wisconsin Health & Educational Facilities Authority, Refunding RB, Froedtert & Community Health Inc., 5.25%, 4/01/39		3,959		4,165,241

Total Municipal Bonds Transferred to Tender Option Bond Trusts — 37.3%				85,164,892

Total Long-Term Investments (Cost — $332,204,086) — 151.8%				346,635,990




Short-Term Securities	Shares

FFI Institutional Tax-Exempt Fund, 0.13% (e)(f)		967,139		967,139

Total Short-Term Securities (Cost — $967,139) — 0.4%				967,139

*Total Investments (Cost — $333,171,225) — 152.2%**				347,603,129
Other Assets Less Liabilities — 3.5%				7,939,169
Liability for Trust Certificates, Including Interest Expense and Fees Payable — (19.0)%				(43,519,724	)
Preferred Shares, at Redemption Value — (36.7)%				(83,705,999	)

Net Assets Applicable to Common Shares — 100.0%			$	228,316,575


See Notes to Financial Statements.

SEMI-ANNUAL REPORT	OCTOBER 31, 2010	33




Schedule of Investments (concluded)	BlackRock MuniHoldings Fund, Inc. (MHD)


*	The cost and unrealized appreciation (depreciation) of investments as of October 31, 2010, as computed for federal income tax purposes, were as follows:


Aggregate cost	$	288,799,108

Gross unrealized appreciation	$	18,117,701
Gross unrealized depreciation		(2,801,302	)

Net unrealized appreciation	$	15,316,399


(a)	Security exempt from registration under Rule 144A of the Securities Act of 1933. These securities may be resold in transactions exempt from registration to qualified institutional investors.

(b)	Represents a zero-coupon bond. Rate shown reflects the current yield as of report date. (c) Variable rate security. Rate shown is as of report date.

(d)	Securities represent bonds transferred to a tender option bond trust in exchange for which the Fund acquired residual interest certificates. These securities serve as collateral in a financing transaction. See Note 1 of the Notes to Financial Statements for details of municipal bonds transferred to tender option bond trusts.

(e)	Represents the current yield as of report date.

(f)	Investments in companies considered to be an affiliate of the Fund during the period, for purposes of Section 2(a)(3) of the Investment Company Act of 1940, as amended, were as follows:



Affiliate	Shares Held at April 30, 2010	Net Activity		Shares Held at October 31, 2010	Income

FFI Institutional Tax-Exempt Fund	3,354,654	(2,387,515	)	967,139	$	2,341


•	Fair Value Measurements — Various inputs are used in determining the fair value of investments, which are as follows:

	•	Level 1 — price quotations in active markets/exchanges for identical assets and liabilities

	•	Level 2 — other observable inputs (including, but not limited to: quoted prices for similar assets or liabilities in markets that are active, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the assets or liabilities (such as interest rates, yield curves, volatilities, prepayment speeds, loss severities, credit risks and default rates) or other market-corroborated inputs)

	•	Level 3 — unobservable inputs based on the best information available in the circumstances, to the extent observable inputs are not available (including the Fund’s own assumptions used in determining the fair value of investments)

	The inputs or methodologies used for valuing securities are not necessarily an indication of the risk associated with investing in those securities. For information about the Fund’s policy regarding valuation of investments and other significant accounting policies, please refer to Note 1 of the Notes to Financial Statements.

	The following table summarizes the inputs used as of October 31, 2010 in determining the fair valuation of the Fund’s investments:



Valuation Inputs	Level 1		Level 2		Level 3		Total

Assets:
Investments in Securities:
Long-Term Investments¹		—	$	346,635,990		—	$	346,635,990
Short-Term Securities	$	967,139		—		—		967,139

Total	$	967,139	$	346,635,990		—	$	347,603,129


	¹	See above Schedule of Investments for values in each state or political subdivision.


See Notes to Financial Statements.

32	SEMI-ANNUAL REPORT	OCTOBER 31, 2010




Schedule of Investments October 31, 2010 (Unaudited)	BlackRock MuniHoldings Fund II, Inc. (MUH) (Percentages shown are based on Net Assets)


Municipal Bonds	Par (000)		Value

Alabama — 1.8%
County of Jefferson Alabama, RB, Series A, 5.00%, 1/01/24	$	3,450	$	3,010,229

Arizona — 4.2%
Maricopa County Pollution Control Corp., Refunding RB, Southern California Edison Co., Series A, 5.00%, 6/01/35		855		873,921
Phoenix IDA Arizona, Refunding RB, America West Airlines Inc. Project, AMT, 6.30%, 4/01/23		2,060		1,809,380
Pima County IDA, RB, Arizona Charter Schools Project, Series C, 6.75%, 7/01/31		950		953,496
Pima County IDA, Refunding IDRB, Tucson Electric Power, 5.75%, 9/01/29		560		578,693
Salt River Project Agricultural Improvement & Power District, RB, Series A, 5.00%, 1/01/38		990		1,044,193
Salt Verde Financial Corp., RB, Senior, 5.00%, 12/01/37		1,385		1,302,814
Show Low Improvement District, Special Assessment Bonds, District No. 5, 6.38%, 1/01/15		605		605,847

				7,168,344

California — 19.5%
Benicia Unified School District, GO, CAB, Series A (NPFGC), 5.62%, 8/01/20 (a)		2,000		1,224,020
California Health Facilities Financing Authority, Refunding RB, St. Joseph Health System, Series A, 5.75%, 7/01/39		1,110		1,179,952
California State Public Works Board, RB, Various Capital Projects, Sub-Series I-1, 6.38%, 11/01/34		600		657,642
California Statewide Communities Development Authority, RB, John Muir Health, 5.13%, 7/01/39		1,090		1,094,850
Los Angeles Department of Airports, RB, Series A, 5.25%, 5/15/39		400		421,832
Los Angeles Department of Airports, Refunding RB, Senior, Los Angeles International Airport, Series A, 5.00%, 5/15/40		2,975		3,084,658
Poway Unified School District, Special Tax Bonds, Community Facilities District No. 6 Area, Series A, 6.13%, 9/01/33		1,750		1,767,990
San Diego Unified School District California, GO, CAB, Election of 2008, Series A, 6.06%, 7/01/29 (a)		2,525		863,474
San Francisco City & County Public Utilities Commission, RB, Series B, 5.00%, 11/01/39		4,770		5,053,672
San Marino Unified School District California, GO, Series A (NPFGC) (a):
5.51%, 7/01/17		1,820		1,459,585
5.56%, 7/01/18		1,945		1,463,710
5.60%, 7/01/19		2,070		1,467,651
State of California, GO, Various Purpose:
6.00%, 3/01/33		1,265		1,453,030
6.50%, 4/01/33		7,325		8,611,783
University of California, RB, Limited Project, Series B, 4.75%, 5/15/38		3,495		3,520,968

				33,324,817

Colorado — 2.8%
Colorado Educational & Cultural Facilities Authority, RB, Charter School, Colorado Springs, 5.50%, 7/01/40		1,055		1,072,323
Colorado Health Facilities Authority, Refunding RB, Sisters of Leavenworth, Series A, 5.00%, 1/01/40		1,100		1,120,999
Elk Valley Public Improvement Corp., RB, Public Improvement Fee, Series A, 7.10%, 9/01/14		800		816,488
Plaza Metropolitan District No. 1 Colorado, Tax Allocation Bonds, Subordinate Public Improvement Fee, Tax Increment, 8.13%, 12/01/25		860		799,697
University of Colorado, RB, Series A, 5.38%, 6/01/38		920		1,001,383

				4,810,890


Municipal Bonds	Par (000)		Value

Connecticut — 1.6%
Connecticut State Health & Educational Facility Authority, RB:
Ascension Health Senior Credit, 5.00%, 11/15/40	$	685	$	717,462
Wesleyan University, 5.00%, 7/01/35		1,875		2,027,194

				2,744,656

Delaware — 1.2%
Delaware State EDA, RB, Exempt Facilities, Indian River Power, 5.38%, 10/01/45		2,050		2,041,882

District of Columbia — 2.0%
Metropolitan Washington Airports Authority, RB:
CAB, 2nd Senior Lien, Series B (AGC), 7.08%, 10/01/34 (a)		10,170		2,404,493
First Senior Lien, Series A, 5.00%, 10/01/39		255		265,284
First Senior Lien, Series A, 5.25%, 10/01/44		745		786,221

				3,455,998

Florida — 6.4%
Ballantrae Community Development District, Special Assessment Bonds, 6.00%, 5/01/35		1,570		1,546,230
City of Clearwater Florida, RB, Series A, 5.25%, 12/01/39		870		925,610
County of Broward Florida, RB, Series A, 5.25%, 10/01/34		545		583,586
County of Miami-Dade Florida, RB:
CAB, Sub-Series A (NPFGC), 5.24%, 10/01/37 (a)		1,765		297,650
Water & Sewer System, 5.00%, 10/01/34		2,845		2,962,356
County of Miami-Dade Florida, Refunding RB, Miami International Airport, Series A-1, 5.38%, 10/01/41		330		340,616
Greater Orlando Aviation Authority Florida, RB, Special Purpose, JetBlue Airways Corp., AMT, 6.50%, 11/15/36		1,515		1,474,201
Hillsborough County IDA, RB, National Gypsum Co., Series B, AMT, 7.13%, 4/01/30		1,380		1,345,252
Palm Coast Park Community Development District, Special Assessment Bonds, 5.70%, 5/01/37		495		309,043
Preserve at Wilderness Lake Community Development District, Special Assessment Bonds, Series A, 5.90%, 5/01/34		1,195		1,065,845

				10,850,389

Georgia — 1.4%
De Kalb Private Hospital Authority, Refunding RB, Children’s Healthcare, 5.25%, 11/15/39		420		441,907
Metropolitan Atlanta Rapid Transit Authority, RB, Third Series, 5.00%, 7/01/39		1,740		1,866,359

				2,308,266

Guam — 0.5%
Territory of Guam, GO, Series A:
6.75%, 11/15/29		455		503,976
7.00%, 11/15/39		275		308,113

				812,089

Idaho — 1.2%
Power County Industrial Development Corp., RB, FMC Corp. Project, AMT, 6.45%, 8/01/32		2,000		2,010,640
Illinois — 4.2%
City of Chicago Illinois, Special Assessment Bonds, Lake Shore East, 6.75%, 12/01/32		1,000		981,920
Illinois Finance Authority, RB, Navistar International, Recovery Zone, 6.50%, 10/15/40		775		804,070
Illinois Finance Authority, Refunding RB, Central DuPage Health, Series B, 5.50%, 11/01/39		800		849,568


See Notes to Financial Statements.

SEMI-ANNUAL REPORT	OCTOBER 31, 2010	33




Schedule of Investments (continued)	BlackRock MuniHoldings Fund II, Inc. (MUH) (Percentages shown are based on Net Assets)


Municipal Bonds	Par (000)		Value

Illinois (concluded)
Metropolitan Pier & Exposition Authority, Refunding RB (AGM), McCormick Place Expansion Project:
CAB, Series B, 6.25%, 6/15/47 (a)	$	9,555	$	1,006,428
Series B, 5.00%, 6/15/50		1,585		1,582,195
Series B-2, 5.00%, 6/15/50		1,260		1,240,684
State of Illinois, RB, Build Illinois, Series B, 5.25%, 6/15/34		315		329,657
Territory of Guam, GO, Series A, 6.00%, 11/15/19		320		342,087

				7,136,609

Indiana — 1.6%
Indiana Finance Authority, RB, Sisters of St. Francis Health, 5.25%, 11/01/39		420		437,426
Indiana Finance Authority, Refunding RB, Parkview Health System, Series A, 5.75%, 5/01/31		1,660		1,750,105
Indiana Municipal Power Agency, RB, Series B, 6.00%, 1/01/39		565		621,161

				2,808,692

Kansas — 1.7%
Kansas Development Finance Authority, Refunding RB:
Adventist Health, 5.75%, 11/15/38		1,785		1,972,979
Sisters of Leavenworth, Series A, 5.00%, 1/01/40		835		858,455

				2,831,434

Kentucky — 0.3%
Kentucky Economic Development Finance Authority, Refunding RB, Owensboro Medical Health System, Series A, 6.38%, 6/01/40		510		540,539

Louisiana — 2.0%
East Baton Rouge Sewerage Commission, RB, Series A, 5.25%, 2/01/39		420		448,657
Louisiana Local Government Environmental Facilities & Community Development Authority, RB, Westlake Chemical Corp. Projects, 6.75%, 11/01/32		2,500		2,652,400
New Orleans Aviation Board, Refunding RB, Passenger Facility Charge, Series A, 5.25%, 1/01/41		310		314,030

				3,415,087

Maine — 0.1%
Maine Health & Higher Educational Facilities Authority, RB, Series A, 5.00%, 7/01/39		150		155,928

Maryland — 0.8%
Maryland EDC, RB, Transportation Facilities Project, Series A, 5.75%, 6/01/35		220		229,203
Maryland EDC, Refunding RB, CNX Marine Terminals, Inc., 5.75%, 9/01/25		415		423,715
Maryland State Energy Financing Administration, RB, Cogeneration, AES Warrior Run, AMT, 7.40%, 9/01/19		750		750,397

				1,403,315

Massachusetts — 4.3%
Massachusetts Development Finance Agency, RB, Neville Communities, Series A (Ginnie Mae):
5.75%, 6/20/22		600		660,324
6.00%, 6/20/44		1,500		1,639,005
Massachusetts Development Finance Agency, Refunding RB, Boston University, Series P, 5.45%, 5/15/59		845		914,188
Massachusetts Health & Educational Facilities Authority, Refunding RB, Partners Healthcare, Series J1, 5.00%, 7/01/39		910		935,735
Massachusetts HFA, RB, M/F Housing, Series A, AMT, 5.25%, 12/01/48		2,100		2,076,333
Massachusetts HFA, Refunding HRB, Series F, AMT, 5.70%, 6/01/40		1,100		1,135,156

				7,360,741


Municipal Bonds	Par (000)		Value

Michigan — 4.0%
City of Detroit Michigan, RB, Senior Lien, Series B (AGM), 7.50%, 7/01/33	$	460	$	560,547
Flint Hospital Building Authority Michigan, Refunding RB, Hurley Medical Center (ACA), 6.00%, 7/01/20		960		957,811
Kalamazoo Hospital Finance Authority, Refunding RB, Bronson Methodist Hospital, 5.50%, 5/15/36		690		706,967
Michigan State Hospital Finance Authority, Refunding RB, Hospital, Henry Ford Health, 5.75%, 11/15/39		1,520		1,571,908
Michigan Strategic Fund, Refunding RB, Detroit Edison Co., Pollution, Series C, AMT (Syncora), 5.65%, 9/01/29		2,935		2,943,805

				6,741,038

Minnesota — 1.0%
City of Minneapolis Minnesota, Refunding RB, Fairview Health Services, Series A, 6.75%, 11/15/32		1,540		1,756,047

Montana — 0.7%
Montana Facility Finance Authority, Refunding RB, Sisters of Leavenworth, Series A, 4.75%, 1/01/40		1,120		1,158,662

New Hampshire — 1.0%
New Hampshire Health & Education Facilities Authority, Refunding RB, Dartmouth-Hitchcock, 6.00%, 8/01/38		1,530		1,648,529

New Jersey — 5.0%
New Jersey EDA, RB:
Cigarette Tax, 5.75%, 6/15/29		3,050		3,001,840
Continental Airlines Inc. Project, AMT, 6.63%, 9/15/12		2,000		2,027,020
New Jersey State Turnpike Authority, RB, Series C (AGM), 5.00%, 1/01/30		2,500		2,627,425
Tobacco Settlement Financing Corp. New Jersey, Refunding RB, Series 1A, 4.50%, 6/01/23		920		861,010

				8,517,295

New York — 5.7%
City of Troy New York, Refunding RB, Rensselaer Polytechnic, Series A, 5.13%, 9/01/40		685		708,769
Dutchess County Industrial Development Agency New York, Refunding RB, St. Francis Hospital, Series A, 7.50%, 3/01/29		885		889,328
Long Island Power Authority, Refunding RB, Series A, 5.75%, 4/01/39		1,050		1,165,038
Metropolitan Transportation Authority, Refunding RB, Series B, 5.00%, 11/15/34		1,270		1,351,674
New York City Industrial Development Agency, RB:
Continental Airlines Inc. Project, AMT, 8.00%, 11/01/12		350		355,789
Continental Airlines Inc. Project, Mandatory Put Bonds, AMT, 8.38%, 11/01/16		525		532,434
Series C, 6.80%, 6/01/28		415		435,808
New York City Transitional Finance Authority, RB, Fiscal 2009, Series S-3, 5.25%, 1/15/39		3,300		3,571,689
New York Liberty Development Corp., Refunding RB, Second Priority, Bank of America Tower at One Bryant Park Project, 6.38%, 7/15/49		615		658,929

				9,669,458

North Carolina — 1.7%
North Carolina Capital Facilities Finance Agency, RB, Duke Energy Carolinas, Series B, 4.38%, 10/01/31		810		794,189
North Carolina Capital Facilities Finance Agency, Refunding RB, Duke Energy Carolinas, Series A, 4.63%, 11/01/40		1,355		1,318,551
North Carolina Medical Care Commission, RB, Duke University Health System, Series A, 5.00%, 6/01/42		705		733,933

				2,846,673


See Notes to Financial Statements.

34	SEMI-ANNUAL REPORT	OCTOBER 31, 2010




Schedule of Investments (continued)	BlackRock MuniHoldings Fund II, Inc. (MUH) (Percentages shown are based on Net Assets)


Municipal Bonds	Par (000)		Value

Ohio — 0.8%
Buckeye Tobacco Settlement Financing Authority, RB, Asset-Backed, Senior Series A-2, 6.50%, 6/01/47	$	1,565	$	1,308,590
Pennsylvania — 6.0%
Allegheny County Hospital Development Authority, Refunding RB, Health System, West Penn, Series A, 5.38%, 11/15/40		1,095		842,931
Montgomery County Higher Education & Health Authority, Refunding RB, Abington Memorial Hospital, Series A, 5.13%, 6/01/33		325		329,833
Pennsylvania Economic Development Financing Authority, RB:
American Water Co. Project, 6.20%, 4/01/39		1,830		2,013,677
Aqua Pennsylvania Inc. Project, 5.00%, 11/15/40		950		979,251
National Gypsum Co., Series A, AMT, 6.25%, 11/01/27		2,750		2,454,127
Pennsylvania Turnpike Commission, RB, Sub-Series B, 5.25%, 6/01/39		2,955		3,072,018
Philadelphia Authority for Industrial Development, RB, Commercial Development, AMT, 7.75%, 12/01/17		540		540,691

				10,232,528

Puerto Rico — 4.8%
Commonwealth of Puerto Rico, GO, Refunding, Public Improvement, Series C, 6.00%, 7/01/39		1,490		1,637,689
Puerto Rico Industrial Medical & Environmental Pollution Control Facilities Financing Authority, RB, Special Facilities, American Airlines, Series A, 6.45%, 12/01/25		905		850,745
Puerto Rico Sales Tax Financing Corp., RB:
CAB, Series A, 6.40%, 8/01/35 (a)		10,000		2,163,800
First Sub-Series A, 6.52%, 8/01/44		2,790		3,211,681
Puerto Rico Sales Tax Financing Corp., Refunding RB, CAB, First Sub-Series C, 6.30%, 8/01/38 (a)		2,145		383,483

				8,247,398

Tennessee — 1.6%
Hardeman County Correctional Facilities Corp. Tennessee, RB, Series B, 7.38%, 8/01/17		2,200		2,146,188
Rutherford County Health & Educational Facilities Board, RB, Ascension Health Senior Credit Group, 5.00%, 11/15/40		510		536,505

				2,682,693

Texas — 10.5%
Brazos River Authority, Refunding RB, TXU Electric Co. Project, Series C, Mandatory Put Bonds, AMT, 5.75%, 5/01/36 (b)		825		783,750
Brazos River Harbor Navigation District, Refunding RB, Dow Chemical Co. Project, Series A7, AMT, 6.63%, 5/15/33		2,500		2,565,875
City of Dallas Texas, Refunding RB, 5.00%, 10/01/35		760		817,844
City of Houston Texas, RB, Senior Lien, Series A, 5.50%, 7/01/39		535		578,180
Harris County Health Facilities Development Corp., Refunding RB, Memorial Hermann Healthcare System, Series B, 7.25%, 12/01/35		1,380		1,584,419
La Vernia Higher Education Finance Corp., RB, KIPP Inc., 6.38%, 8/15/44		590		623,659
Matagorda County Hospital District Texas, RB (FHA), 5.00%, 2/15/35		3,265		3,298,336
North Texas Tollway Authority, RB, Toll, 2nd Tier, Series F, 6.13%, 1/01/31		3,020		3,258,429


Municipal Bonds	Par (000)		Value

Texas (concluded)
Texas Private Activity Bond Surface Transportation Corp., RB, Senior Lien:
LBJ Infrastructure Group LLC, LBJ Freeway Managed Lanes Project, 7.00%, 6/30/40	$	2,165	$	2,353,312
NTE Mobility Partners LLC, North Tarrant Express Managed Lanes Project, 6.88%, 12/31/39		1,940		2,105,171

				17,968,975

U.S. Virgin Islands — 1.6%
United States Virgin Islands, Refunding RB, Senior Secured, Hovensa Coker Project, AMT, 6.50%, 7/01/21		2,680		2,726,498

Utah — 0.8%
City of Riverton Utah, RB, IHC Health Services Inc., 5.00%, 8/15/41		1,400		1,455,440

Vermont — 0.6%
Vermont Educational & Health Buildings Financing Agency, RB, Developmental & Mental Health, Series A, 6.50%, 6/15/32		1,000		972,780

Virginia — 1.9%
Tobacco Settlement Financing Corp. Virginia, Refunding RB, Senior Series B1, 5.00%, 6/01/47		2,505		1,758,660
Virginia HDA, RB, Sub-Series H-1 (NPFGC), 5.35%, 7/01/31		1,500		1,511,130

				3,269,790

Washington — 0.5%
Seattle Housing Authority Washington, HRB, Replacement Housing Projects, 6.13%, 12/01/32		945		919,863

Wisconsin — 4.0%
State of Wisconsin, Refunding RB, Series A, 6.00%, 5/01/36		3,620		4,118,076
Wisconsin Health & Educational Facilities Authority, RB:
Ascension Health Senior Credit Group, 5.00%, 11/15/33		1,235		1,287,055
SynergyHealth Inc., 6.00%, 11/15/32		1,360		1,407,926

				6,813,057

Total Municipal Bonds — 109.8%				187,125,859




Municipal Bonds Transferred to Tender Option Bond Trusts (c)

California — 6.4%
Bay Area Toll Authority, Refunding RB, San Francisco Bay Area, Series F-1, 5.63%, 4/01/44		1,640		1,820,544
California Educational Facilities Authority, RB, University of Southern California, Series A, 5.25%, 10/01/39		1,335		1,445,418
Los Angeles Community College District California, GO, Election of 2001, Series A (AGM), 5.00%, 8/01/32		1,170		1,227,295
San Diego Community College District California, GO, Election of 2002, 5.25%, 8/01/33		553		600,185
Sequoia Union High School District California, GO, Refunding, Election of 2004, Series B (AGM), 5.50%, 7/01/35		5,519		5,843,198

				10,936,640

Colorado — 2.5%
Colorado Health Facilities Authority, RB (AGM):
Catholic Health, Series C-3, 5.10%, 10/01/41		1,870		1,922,771
Catholic Health, Series C-7, 5.00%, 9/01/36		1,200		1,233,240
Colorado Health Facilities Authority, Refunding RB, Catholic Healthcare, Series A, 5.50%, 7/01/34		1,080		1,162,906

				4,318,917


See Notes to Financial Statements.

SEMI-ANNUAL REPORT	OCTOBER 31, 2010	35




Schedule of Investments (continued)	BlackRock MuniHoldings Fund II, Inc. (MUH) (Percentages shown are based on Net Assets)


Municipal Bonds Transferred to Tender Option Bond Trusts (c)	Par (000)		Value

Connecticut — 2.9%
Connecticut State Health & Educational Facility Authority, RB, Yale University:
Series T-1, 4.70%, 7/01/29	$	2,300	$	2,469,372
Series X-3, 4.85%, 7/01/37		2,370		2,501,037

				4,970,409

Georgia — 1.0%
Private Colleges & Universities Authority, Refunding RB, Emory University, Series C, 5.00%, 9/01/38		1,649		1,750,329

Massachusetts — 1.9%
Massachusetts School Building Authority, RB, Series A (AGM), 5.00%, 8/15/30		2,999		3,174,115

New Hampshire — 0.7%
New Hampshire Health & Education Facilities Authority, Refunding RB, Dartmouth College, 5.25%, 6/01/39		1,019		1,120,694

New York — 4.4%
New York City Municipal Water Finance Authority, RB, Series FF-2, 5.50%, 6/15/40		810		914,039
New York State Dormitory Authority, ERB, Series F, 5.00%, 3/15/35		2,910		3,039,676
Sales Tax Asset Receivable Corp., RB, Series A (AMBAC), 5.25%, 10/15/27		3,200		3,533,859

				7,487,574

North Carolina — 0.5%
North Carolina Capital Facilities Finance Agency, Refunding RB, Wake Forest University, 5.00%, 1/01/38		800		846,680

Ohio — 4.4%
State of Ohio, Refunding RB, Cleveland Clinic Health, Series A, 5.50%, 1/01/39		6,980		7,516,692

Tennessee — 1.5%
Shelby County Health Educational & Housing Facilities Board, Refunding RB, St. Jude’s Children’s Research Hospital, 5.00%, 7/01/31		2,500		2,615,275

Texas — 2.1%
County of Harris Texas, RB, Senior Lien, Toll Road, Series A, 5.00%, 8/15/38		3,360		3,528,000

Virginia — 7.4%
University of Virginia, Refunding RB, General, 5.00%, 6/01/40		2,730		2,927,379
Virginia HDA, RB, Sub-Series H-1 (NPFGC), 5.38%, 7/01/36		7,900		8,047,414
Virginia Small Business Financing Authority, Refunding RB, Sentara Healthcare, 5.00%, 11/01/40		1,553		1,635,417

				12,610,210

Washington — 0.8%
Central Puget Sound Regional Transit Authority, RB, Series A (AGM), 5.00%, 11/01/32		1,365		1,439,718

Wisconsin — 1.8%
Wisconsin Health & Educational Facilities Authority, Refunding RB, Froedtert & Community Health Inc., 5.25%, 4/01/39		2,859		3,008,230

Total Municipal Bonds Transferred to Tender Option Bond Trusts — 38.3%				65,323,483

Total Long-Term Investments (Cost — $240,530,777) — 148.1%				252,449,342


Short-Term Securities	Shares		Value

FFI Institutional Tax-Exempt Fund, 0.13% (d)(e)		1,177,035	$	1,177,035

Total Short-Term Securities (Cost — $1,177,035) — 0.7%				1,177,035
*Total Investments (Cost — $241,707,812) — 148.8%**				253,626,377
Other Assets Less Liabilities — 3.2%				5,504,236
Liability for Trust Certificates, Including Interest Expense and Fees Payable — (19.7)%				(33,642,528	)
Preferred Shares, at Redemption Value — (32.3)%				(55,054,000	)

Net Assets Applicable to Common Shares — 100.0%			$	170,434,085


*	The cost and unrealized appreciation (depreciation) of investments as of October 31, 2010, as computed for federal income tax purposes, were as follows:


Aggregate cost	$	207,383,238

Gross unrealized appreciation	$	14,245,185
Gross unrealized depreciation		(1,619,230	)

Net unrealized appreciation	$	12,625,955


(a)	Represents a zero-coupon bond. Rate shown reflects the current yield as of report date.

(b)	Variable rate security. Rate shown is as of report date.

(c)	Securities represent bonds transferred to a tender option bond trust in exchange for which the Fund acquired residual interest certificates. These securities serve as collateral in a financing transaction. See Note 1 of the Notes to Financial Statements for details of municipal bonds transferred to tender option bond trusts.

(d)	Investments in companies considered to be an affiliate of the Fund during the period, for purposes of Section 2(a)(3) of the Investment Company Act of 1940, as amended, were as follows:



Affiliate	Shares Held at April 30, 2010		Net Activity		Shares Held at October 31, 2010		Income

FFI Institutional Tax-Exempt Fund		607,735		569,300		1,177,035	$	916


(e)	Represents the current yield as of report date.


See Notes to Financial Statements.

36	SEMI-ANNUAL REPORT	OCTOBER 31, 2010




Schedule of Investments (concluded)	BlackRock MuniHoldings Fund II, Inc. (MUH)


•	Fair Value Measurements — Various inputs are used in determining the fair value of investments, which are as follows:

	•	Level 1 — price quotations in active markets/exchanges for identical assets and liabilities

	•	Level 2 — other observable inputs (including, but not limited to: quoted prices for similar assets or liabilities in markets that are active, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the assets or liabilities (such as interest rates, yield curves, volatilities, prepayment speeds, loss severities, credit risks and default rates) or other market-corroborated inputs)

	•	Level 3 — unobservable inputs based on the best information available in the circumstances, to the extent observable inputs are not available (including the Fund’s own assumptions used in determining the fair value of investments) The inputs or methodologies used for valuing securities are not necessarily an indication of the risk associated with investing in those securities. For information about the Fund’s policy regarding valuation of investments and other significant accounting policies, please refer to Note 1 of the Notes to Financial Statements.

The following table summarizes the inputs used as of October 31, 2010 in determining the fair valuation of the Fund’s investments:



Valuation Inputs	Level 1		Level 2		Level 3		Total

Assets:
Investments in Securities:
Long-Term Investments¹		—	$	252,449,342		—	$	252,449,342
Short-Term Securities	$	1,177,035		—		—		1,177,035

Total	$	1,177,035	$	252,449,342		—	$	253,626,377


	¹	See above Schedule of Investments for values in each state or political subdivision.


See Notes to Financial Statements.

SEMI-ANNUAL REPORT	OCTOBER 31, 2010	37




Schedule of Investments October 31, 2010 (Unaudited)	BlackRock MuniHoldings Quality Fund, Inc. (MUS)
	(Percentages shown are based on Net Assets)


Municipal Bonds		Par (000)	Value

Alabama — 2.6%
Birmingham Special Care Facilities Financing Authority, RB, Children’s Hospital (AGC), 6.00%, 6/01/39	$	2,330	$	2,558,503
County of Jefferson Alabama, RB, Series A, 5.50%, 1/01/22		2,170		2,015,583

				4,574,086

Arizona — 0.5%
State of Arizona, COP, Department of Administration, Series A (AGM):
5.25%, 10/01/28		715		756,720
5.00%, 10/01/29		185		191,179

				947,899

Arkansas — 3.6%
Arkansas Development Finance Authority, Refunding RB, Series C (NPFGC):
5.35%, 12/01/11 (a)		535		568,860
5.35%, 12/01/35		5,685		5,763,112

				6,331,972

California — 12.0%
Central Unified School District, GO, Election of 2008, Series A (AGC), 5.63%, 8/01/33		1,325		1,473,334
City of Vista California, COP, Refunding, Community Projects (NPFGC), 5.00%, 5/01/37		2,265		2,212,950
County of Sacramento California, RB, Senior Series A (AGC), 5.50%, 7/01/41		2,100		2,234,841
East Side Union High School District-Santa Clara County California, GO, Election of 2002, Series B (NPFGC), 5.00%, 8/01/11 (a)		1,800		1,899,810
Modesto Schools Infrastructure Financing Agency, Special Tax Bonds (AMBAC), 5.50%, 9/01/36		2,565		2,426,336
Oceanside Unified School District California, GO, Series A (AGC), 5.25%, 8/01/33		1,825		1,951,856
Oxnard Union High School District, GO, Refunding, Election of 2004, Series A (AGM), 5.00%, 8/01/40		1,885		1,948,091
San Pablo Joint Powers Financing Authority California, Tax Allocation Bonds, Refunding, CAB (NPFGC) (b):
5.66%, 12/01/24		2,635		1,114,763
5.66%, 12/01/25		2,355		926,386
5.66%, 12/01/26		2,355		858,704
Santa Ana Unified School District, GO (NPFGC), 5.00%, 8/01/32		790		794,550
West Contra Costa Unified School District California, GO, Election of 2000, Series C (NPFGC), 5.00%, 8/01/21		3,480		3,534,149

				21,375,770

Colorado — 1.2%
Colorado Health Facilities Authority, RB, Hospital, NCMC Inc. Project, Series B (AGM), 6.00%, 5/15/26		1,900		2,159,445

District of Columbia — 0.2%
District of Columbia, RB, Deed Tax, Housing Production Trust Fund, Series A (NPFGC), 5.00%, 6/01/32		400		407,624

Florida — 13.0%
County of Miami-Dade Florida, RB:
CAB, Sub-Series A (NPFGC), 5.24%, 10/01/37 (b)		1,075		181,288
Miami International Airport, Series A, AMT (AGM), 5.50%, 10/01/41		3,900		4,015,830
Water & Sewer System (AGM), 5.00%, 10/01/39		6,640		6,975,320
County of Miami-Dade Florida, Refunding RB, Water & Sewer System (AGM), 5.00%, 10/01/29		1,565		1,700,106
Jacksonville Port Authority, RB, AMT (AGC), 6.00%, 11/01/38		2,215		2,269,622
Orange County School Board, COP, Series A (AGC), 5.50%, 8/01/34		7,395		7,997,027

				23,139,193


Municipal Bonds		Par (000)	Value

Georgia — 4.8%
Augusta-Richmond County Georgia, RB (AGM), 5.25%, 10/01/39	$	3,495	$	3,650,737
Georgia Higher Education Facilities Authority, RB, USG Real Estate III, Series A (AGC), 5.00%, 6/15/38		1,305		1,341,070
Gwinnett County Hospital Authority, Refunding RB, Gwinnett Hospital System, Series D (AGM), 5.50%, 7/01/41		2,075		2,157,481
Metropolitan Atlanta Rapid Transit Authority, RB, Third Indenture, Series B (AGM), 5.00%, 7/01/34		1,260		1,337,629

				8,486,917

Illinois — 12.5%
Chicago Board of Education Illinois, GO, Refunding, Chicago School Reform Board, Series A (NPFGC), 5.50%, 12/01/26		1,200		1,387,908
Chicago Transit Authority, RB, Federal Transit Administration Section 5309, Series A (AGC), 6.00%, 6/01/26		2,000		2,334,180
City of Chicago Illinois, GO, Refunding, Projects, Series A (AGM):
5.00%, 1/01/28		1,405		1,499,669
5.00%, 1/01/29		2,180		2,311,498
5.00%, 1/01/30		870		917,728
City of Chicago Illinois, RB (AGM):
General, Third Lien, Series C, 5.25%, 1/01/35		1,255		1,317,311
Series A, 5.00%, 1/01/33		8,000		8,188,160
City of Chicago Illinois, Refunding RB, Second Lien (NPFGC), 5.50%, 1/01/30		1,310		1,481,937
State of Illinois, RB, Build Illinois, Series B, 5.25%, 6/15/28		2,500		2,699,475

				22,137,866

Indiana — 4.3%
Indiana Municipal Power Agency, RB, Series A (NPFGC), 5.00%, 1/01/42		6,000		6,114,420
Indianapolis Local Public Improvement Bond Bank, Refunding RB, Waterworks Project, Series A (AGC), 5.50%, 1/01/38		1,430		1,570,869

				7,685,289

Iowa — 1.1%
Iowa Finance Authority, Refunding RB, Iowa Health System (AGC), 5.25%, 2/15/29		1,770		1,906,626

Kentucky — 0.8%
Kentucky Economic Development Finance Authority, RB, Louisville Arena, Sub-Series A-1 (AGC), 6.00%, 12/01/38		320		345,434
Kentucky State Property & Buildings Commission, Refunding RB, Project No. 93 (AGC), 5.25%, 2/01/29		1,000		1,099,630

				1,445,064

Louisiana — 1.3%
Louisiana State Citizens Property Insurance Corp., RB, Series C-3 (AGC), 6.13%, 6/01/25		2,055		2,313,827

Maine — 1.0%
City of Portland Maine, RB, General (AGM), 5.25%, 1/01/35		1,680		1,768,570

Massachusetts — 1.6%
Massachusetts HFA, RB, Rental Mortgage, Series C, AMT (AGM), 5.50%, 7/01/32		2,440		2,468,133
Massachusetts HFA, Refunding RB, Housing Development, Series A, AMT (NPFGC), 5.15%, 6/01/11		315		315,684

				2,783,817


See Notes to Financial Statements.

38	SEMI-ANNUAL REPORT	OCTOBER 31, 2010




Schedule of Investments (continued)	BlackRock MuniHoldings Quality Fund, Inc. (MUS)
	(Percentages shown are based on Net Assets)


Municipal Bonds		Par (000)	Value

Michigan — 15.3%
City of Detroit Michigan, RB:
Second Lien, Series B (NPFGC), 5.50%, 7/01/29	$	2,410	$	2,515,293
Senior Lien, Series B (AGM), 7.50%, 7/01/33		2,000		2,437,160
City of Detroit Michigan, Refunding RB:
Second Lien, Series C (BHAC), 5.75%, 7/01/27		1,580		1,734,761
Second Lien, Series E (BHAC), 5.75%, 7/01/31		3,240		3,504,449
Senior Lien, Series C-1 (AGM), 7.00%, 7/01/27		4,810		5,737,608
Senior Lien, Series C-2 (BHAC), 5.25%, 7/01/29		1,910		2,008,269
Michigan State Building Authority, Refunding RB, Facilities Program, Series I (AGC):
5.25%, 10/15/24		875		959,858
5.25%, 10/15/25		455		495,327
Michigan Strategic Fund, Refunding RB, AMT (Syncora) Detroit Edison Co.:
Pollution, Series B, 5.65%, 9/01/29		1,500		1,504,500
Pollution, Series C, 5.65%, 9/01/29		2,050		2,056,150
Project, Series A, 5.50%, 6/01/30		2,000		2,000,460
Royal Oak Hospital Finance Authority Michigan, Refunding RB, William Beaumont Hospital, 8.25%, 9/01/39		1,910		2,295,935

				27,249,770

Minnesota — 0.9%
City of Minneapolis Minnesota, Refunding RB, Fairview Health Services, Series B (AGC), 6.50%, 11/15/38		1,325		1,509,838

Mississippi — 1.4%
Mississippi Development Bank Special Obligation, Refunding RB, Jackson Mississippi Water and Sewer System (AGM), 5.00%, 9/01/34		2,500		2,555,850

Nevada — 6.4%
County of Clark Nevada, RB:
Las Vegas-McCarran International Airport, Series A (AGC), 5.25%, 7/01/39		3,510		3,636,395
Las Vegas-McCarran, Series A-1, AMT (AGM), 5.00%, 7/01/23		1,750		1,796,795
Subordinate Lien, Series A-2 (NPFGC), 5.00%, 7/01/36		6,000		6,017,520

				11,450,710

New Jersey — 7.4%
New Jersey EDA, RB, Motor Vehicle Surcharge, Series A (NPFGC), 5.25%, 7/01/33		6,700		6,904,484
New Jersey Health Care Facilities Financing Authority, RB, Virtua Health (AGC), 5.50%, 7/01/38		2,100		2,277,513
New Jersey Transportation Trust Fund Authority, RB, Transportation System, Series A (AGC), 5.63%, 12/15/28		3,500		3,971,695

				13,153,692

New York — 3.4%
New York City Transitional Finance Authority, RB, Fiscal 2009, Series S-3, 5.25%, 1/15/39		1,400		1,515,262
Sales Tax Asset Receivable Corp., RB, Series A (AMBAC), 5.25%, 10/15/27		4,095		4,521,863

				6,037,125

Pennsylvania — 1.0%
Delaware River Port Authority, RB, Series D (AGC), 5.00%, 1/01/40		1,720		1,797,090

Puerto Rico — 1.4%
Puerto Rico Sales Tax Financing Corp., RB, First Sub-Series A, 6.38%, 8/01/39		2,115		2,417,297


Municipal Bonds		Par (000)	Value

Texas — 21.9%
City of Austin Texas, Refunding RB, Series A (AGM):
5.00%, 11/15/28	$	1,080	$	1,169,521
5.00%, 11/15/29		1,365		1,467,621
City of Dallas Texas, Refunding RB (AGC), 5.25%, 8/15/38		1,250		1,309,062
City of Houston Texas, Refunding RB, Combined, First Lien, Series A (AGC), 6.00%, 11/15/35		4,000		4,633,680
Harris County Health Facilities Development Corp., Refunding RB, Memorial Hermann Healthcare System, Series B, 7.25%, 12/01/35		600		688,878
Lower Colorado River Authority, Refunding RB, LCRA Transmission Services Project (AGC), 5.50%, 5/15/36		2,610		2,801,052
Lubbock Cooper ISD Texas, GO, School Building (AGC), 5.75%, 2/15/42		775		843,061
North Texas Tollway Authority, Refunding RB (NPFGC) System, First Tier:
5.75%, 1/01/40		6,710		7,117,498
Series A, 5.13%, 1/01/28		5,000		5,258,250
Series A, 5.63%, 1/01/33		6,585		7,017,766
Series B, 5.75%, 1/01/40		6,275		6,656,081

				38,962,470

Utah — 1.5%
City of Riverton Utah, RB, IHC Health Services Inc., 5.00%, 8/15/41		2,485		2,583,406

Virginia — 1.7%
Virginia HDA, RB, Sub-Series H-1 (NPFGC), 5.35%, 7/01/31		1,260		1,269,349
Virginia Public School Authority, RB, School Financing, 6.50%, 12/01/35		1,500		1,751,265

				3,020,614

Washington — 1.3%
Chelan County Public Utility District No. 1, RB, Chelan Hydro System, Series A, AMT (AMBAC), 5.45%, 7/01/37		2,310		2,315,290

Total Municipal Bonds — 124.1%				220,517,117



Municipal Bonds Transferred to Tender Option Bond Trusts (c)

Alabama — 1.2%
Mobile Board of Water & Sewer Commissioners, RB (NPFGC), 5.00%, 1/01/31		2,120		2,180,123

California — 2.6%
City of San Jose California, GO, Libraries, Parks, and Public Safety Project (NPFGC), 5.00%, 9/01/30		1,258		1,320,136
Sequoia Union High School District California, GO, Refunding, Election of 2004, Series B (AGM), 5.50%, 7/01/35		3,149		3,334,433

				4,654,569

Colorado — 3.3%
Colorado Health Facilities Authority, RB, Catholic Health, Series C-3 (AGM), 5.10%, 10/01/41		5,610		5,768,314

District of Columbia — 0.7%
District of Columbia Water & Sewer Authority, RB, Series A, 6.00%, 10/01/35		1,040		1,183,950


See Notes to Financial Statements.

SEMI-ANNUAL REPORT	OCTOBER 31, 2010	39




Schedule of Investments (concluded)	BlackRock MuniHoldings Quality Fund, Inc. (MUS)
	(Percentages shown are based on Net Assets)


Municipal Bonds Transferred to Tender Option Bond Trusts (c)		Par (000)	Value

Florida — 8.0%
City of St. Petersburg Florida, Refunding RB (NPFGC), 5.00%, 10/01/35	$	4,302	$	4,378,703
County of Miami-Dade Florida, GO, Building Better Communities Program, Series B-1, 6.00%, 7/01/38		7,500		8,424,150
Lee County Housing Finance Authority, RB, Multi-County Program, Series A-2, AMT (Ginnie Mae), 6.00%, 9/01/40		1,290		1,450,902

				14,253,755

Georgia — 2.4%
Augusta-Richmond County Georgia, RB (AGM), 5.25%, 10/01/34		4,000		4,187,120

Illinois — 1.5%
City of Chicago Illinois, Refunding RB, Second Lien (AGM), 5.25%, 11/01/33		2,509		2,704,499

Kentucky — 0.9%
Kentucky State Property & Building Commission, Refunding RB, Project No. 93 (AGC), 5.25%, 2/01/27		1,406		1,558,538

Massachusetts — 4.8%
Massachusetts School Building Authority, RB, Series A (AGM), 5.00%, 8/15/30		8,008		8,474,887

Nevada — 5.5%
Clark County Water Reclamation District, GO:
Limited Tax, 6.00%, 7/01/38		5,000		5,647,700
Series B, 5.50%, 7/01/29		3,749		4,192,329

				9,840,029

New Jersey — 1.4%
New Jersey State Housing & Mortgage Finance Agency, RB, S/F Housing, Series CC, 5.25%, 10/01/29		2,401		2,535,938

Washington — 2.5%
City of Bellevue Washington, GO, Refunding (NPFGC), 5.50%, 12/01/39		4,002		4,493,078

Total Municipal Bonds Transferred to Tender Option Bond Trusts — 34.8%				61,834,800

Total Long-Term Investments (Cost — $270,162,093) — 158.9%				282,351,917




Short-Term Securities	Shares

FFI Institutional Tax-Exempt Fund, 0.13% (d)(e)	10,941,587		10,941,587

Total Short-Term Securities (Cost — $10,941,587) — 6.2%			10,941,587

*Total Investments (Cost — $281,103,680) — 165.1%**			293,293,504
Other Assets Less Liabilities — 1.8%			3,163,431
Liability for Trust Certificates, Including Interest Expense and Fees Payable — (17.9)%			(31,838,750	)
Preferred Shares, at Redemption Value — (49.0)%			(87,004,682	)

Net Assets Applicable to Common Shares — 100.0%		$	177,613,503


*	The cost and unrealized appreciation (depreciation) of investments as of October 31, 2010, as computed for federal income tax purposes, were as follows:


Aggregate cost	$	249,235,422

Gross unrealized appreciation	$	13,192,266
Gross unrealized depreciation		(949,598	)

Net unrealized appreciation	$	12,242,668


(a)	US government securities, held in escrow, are used to pay interest on this security as well as to retire the bond in full at the date indicated, typically at a premium to par.

(b)	Represents a zero-coupon bond. Rate shown reflects the current yield as of report date.

(c)	Securities represent bonds transferred to a tender option bond trust in exchange for which the Fund acquired residual interest certificates. These securities serve as collateral in a financing transaction. See Note 1 of the Notes to Financial Statements for details of municipal bonds transferred to tender option bond trusts.

(d)	Investments in companies considered to be an affiliate of the Fund during the period, for purposes of Section 2(a)(3) of the Investment Company Act of 1940, as amended, were as follows:



Affiliate	Shares Held at April 30, 2010		Net Activity		Shares Held at October 31, 2010		Income

FFI Institutional Tax-Exempt Fund		8,653,666		2,287,921		10,941,587	$	8,749


(e)	Represents the current yield as of report date.

•	Fair Value Measurements — Various inputs are used in determining the fair value of investments, which are as follows:

	•	Level 1 — price quotations in active markets/exchanges for identical assets and liabilities

	•	Level 2 — other observable inputs (including, but not limited to: quoted prices for similar assets or liabilities in markets that are active, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the assets or liabilities (such as interest rates, yield curves, volatilities, prepayment speeds, loss severities, credit risks and default rates) or other market-corroborated inputs)

	•	Level 3 — unobservable inputs based on the best information available in the circumstances, to the extent observable inputs are not available (including the Fund’s own assumptions used in determining the fair value of investments) The inputs or methodologies used for valuing securities are not necessarily an indication of the risk associated with investing in those securities. For information about the Fund’s policy regarding valuation of investments and other significant accounting policies, please refer to Note 1 of the Notes to Financial Statements.

	The following table summarizes the inputs used as of October 31, 2010 in determining the fair valuation of the Fund’s investments:



Valuation Inputs	Level 1		Level 2		Level 3		Total

Assets:
Investments in Securities:
Long-Term Investments¹		—	$	282,351,917		—	$	282,351,917
Short-Term Securities	$	10,941,587		—		—		10,941,587

Total	$	10,941,587	$	282,351,917		—	$	293,293,504


	¹	See above Schedule of Investments for values in each state or political subdivision.


See Notes to Financial Statements.

40	SEMI-ANNUAL REPORT	OCTOBER 31, 2010




Schedule of Investments October 31, 2010 (Unaudited)	BlackRock Muni Intermediate Duration Fund, Inc. (MUI)
	(Percentages shown are based on Net Assets)


Municipal Bonds		Par (000)	Value

Alabama — 2.8%
Birmingham Special Care Facilities Financing Authority, RB, Children’s Hospital (AGC), 6.00%, 6/01/34	$	4,615	$	5,093,068
County of Jefferson Alabama, RB, Series A:
5.50%, 1/01/21		5,500		5,133,535
5.25%, 1/01/23		6,500		5,870,345

				16,096,948

Arizona — 5.3%
City of Tucson Arizona, COP (AGC):
4.25%, 7/01/21		1,870		1,976,908
4.25%, 7/01/22		1,895		1,984,539
4.50%, 7/01/24		2,120		2,220,679
Refunding, 4.00%, 7/01/20		2,325		2,468,638
Maricopa County IDA Arizona, RB, Arizona Charter Schools Project, Series A, 6.63%, 7/01/20		2,610		2,040,185
Pima County IDA, RB:
Arizona Charter Schools Project, Series C, 6.70%, 7/01/21		970		975,655
Charter Schools, Series K, 6.38%, 7/01/13 (a)		820		939,671
Charter Schools, Series K, 6.38%, 7/01/31		930		934,185
Pima County IDA, Refunding RB, Tucson Electric Power Co., San Juan, Series A, 4.95%, 10/01/20		2,325		2,459,431
Salt River Project Agricultural Improvement & Power District, RB, Series A, 5.00%, 1/01/25		4,000		4,436,360
Scottsdale IDA, RB, Scottsdale Healthcare, Series C (AGC), 5.00%, 9/01/35		7,710		7,835,365
State of Arizona, COP, Department of Administration, Series A (AGM), 4.25%, 10/01/23		2,750		2,847,047

				31,118,663

California — 16.7%
Antelope Valley Healthcare District California, RB, Series A, 5.25%, 9/01/17		8,000		7,939,600
California HFA, RB, Home Mortgage, Series K, AMT, 4.55%, 8/01/21		3,805		3,638,874
California HFA, Refunding RB, Home Mortgage, Series M, AMT, 4.55%, 8/01/21		7,210		6,895,211
California Pollution Control Financing Authority, RB, AMT:
Republic Services Inc. Project, Series B, Mandatory Put Bonds, 5.25%, 6/01/23 (b)		605		649,328
Waste Management Inc. Project, Series A-2, 5.40%, 4/01/25		1,240		1,284,677
California Pollution Control Financing Authority, Refunding RB, Pacific Gas, Series C, AMT (FGIC), 4.75%, 12/01/23		9,035		9,036,175
California State Public Works Board, RB, Department of Corrections, Series C, 5.50%, 6/01/20		10,000		10,481,500
California Statewide Communities Development Authority, RB, Health Facility, Memorial Health Services, Series A, 6.00%, 10/01/23		2,500		2,636,725
City of Sacramento California, Special Tax Bonds, North Natomas Community Facilities, Series 4-C:
5.75%, 9/01/22		1,715		1,743,143
6.00%, 9/01/28		2,990		3,028,481
Golden State Tobacco Securitization Corp. California, Refunding RB, Asset-Backed, Senior Series A-1, 5.00%, 6/01/15		5,000		5,254,600
Los Angeles Regional Airports Improvement Corp. California, Refunding RB, Facilities, LAXFUEL Corp., LA International, AMT (AMBAC), 5.50%, 1/01/32		1,435		1,441,501
Rowland Unified School District California, GO, Election of 2000, Series B (AGM), 5.25%, 8/01/27		1,515		1,569,858


Municipal Bonds		Par (000)	Value

California (concluded)
State of California, GO:
5.50%, 4/01/14 (a)	$	14,795	$	17,129,503
5.50%, 4/01/28		15		15,883
(NPFGC), 5.25%, 2/01/27		5,000		5,165,750
Refunding (AMBAC), 4.50%, 8/01/28		3,000		2,917,530
Various Purpose, 5.25%, 10/01/21		2,550		2,835,651
Various Purpose, 6.00%, 11/01/39		10,000		11,202,800
Tustin Unified School District California, Special Tax Bonds, Senior Lien, Community Facilities District 97-1, Series A (AGM), 5.00%, 9/01/32		2,610		2,639,049

				97,505,839

Colorado — 2.0%
Elk Valley Public Improvement Corp., RB, Public Improvement Fee, Series A, 7.10%, 9/01/14		600		612,366
Montrose Memorial Hospital, RB, 6.38%, 12/01/23		2,250		2,322,045
Plaza Metropolitan District No. 1 Colorado, Tax Allocation Bonds, Public Improvement Fee, Tax Increment, 7.50%, 12/01/15		7,500		7,765,875
Southlands Metropolitan District No. 1, GO, 6.75%, 12/01/14 (a)		930		1,068,895

				11,769,181

Connecticut — 0.2%
Connecticut State Development Authority, RB, Learjet Inc. Project, AMT, 7.95%, 4/01/26		1,160		1,244,065

Florida — 4.3%
County of Miami-Dade Florida, Refunding RB, Series C (BHAC), 5.00%, 10/01/23		8,000		8,806,320
Harbor Bay Community Development District Florida, Special Assessment Bonds, 6.75%, 5/01/34		2,770		2,189,491
Highlands County Health Facilities Authority, Refunding RB, Adventist Health, Series G, 5.13%, 11/15/16 (a)		35		41,976
Midtown Miami Community Development District, Special Assessment Bonds:
Series A, 6.00%, 5/01/24		3,190		3,160,907
Series B, 6.50%, 5/01/37		1,925		1,932,142
Panther Trace II Community Development District, Special Assessment Bonds, Special Assessment, 5.13%, 11/01/13		1,960		1,733,738
Portofino Shores Community Development District, Special Assessment Bonds, Series A, 6.40%, 5/01/34		1,085		1,090,045
South Lake County Hospital District, RB, South Lake Hospital Inc., 6.63%, 10/01/23		2,390		2,478,286
Sterling Hill Community Development District, Special Assessment Bonds, Refunding, Series B, 5.50%, 11/01/10 (c)(d)		160		123,184
University of Florida Research Foundation Inc., RB (AMBAC), 5.13%, 9/01/33		4,000		3,831,040

				25,387,129

Georgia — 1.3%
Fulton County Development Authority, Refunding RB, Robert Woodruff, Series B, 5.25%, 3/15/24		4,000		4,367,640
Medical Center Hospital Authority, Refunding RB, Columbus Regional Healthcare (AGM):
4.00%, 8/01/23		1,500		1,497,990
4.13%, 8/01/24		2,000		1,988,060

				7,853,690

Guam — 0.8%
Territory of Guam, GO, Series A, 6.00%, 11/15/19		1,530		1,635,601
Territory of Guam, RB, Section 30, Series A, 5.38%, 12/01/24		2,620		2,731,743

				4,367,344


See Notes to Financial Statements.

SEMI-ANNUAL REPORT	OCTOBER 31, 2010	41




Schedule of Investments (continued)	BlackRock Muni Intermediate Duration Fund, Inc. (MUI)
	(Percentages shown are based on Net Assets)


Municipal Bonds		Par (000)	Value

Idaho — 0.7%
Idaho Health Facilities Authority, RB, St. Luke’s Regional Medical Center (AGM), 4.63%, 7/01/30	$	3,700	$	3,682,277
University of Idaho, RB, General, Series B, 5.00%, 4/01/32		400		423,716

				4,105,993

Illinois — 7.9%
City of Chicago Illinois, ARB, General, 3rd Lien, Series B-2, AMT:
(AGM), 5.75%, 1/01/23		8,130		8,532,110
(Syncora), 6.00%, 1/01/29		7,510		7,848,025
City of Chicago Illinois, Refunding ARB, General, 3rd Lien, Series A-2, AMT (AGM), 5.75%, 1/01/19		2,550		2,729,418
Du Page & Will Counties Community School District No. 204 Indian, GO, School Building, Series A (NPFGC), 5.25%, 12/30/22		8,650		9,707,030
Du Page County Forest Preservation District Illinois, GO, Refunding, Series A, 3.50%, 11/01/24		3,000		2,952,600
Illinois Finance Authority, RB, Community Rehabilitation Providers Facilities, Series A, 6.63%, 7/01/12 (a)		6,930		6,792,647
Village of Hodgkins Illinois, RB, MBM Project, AMT, 5.90%, 11/01/17		6,000		6,004,860
Village of Wheeling Illinois, Tax Allocation Bonds, North Milwaukee/Lake-Cook TIF Project, 6.00%, 1/01/25		1,560		1,474,512

				46,041,202

Indiana — 0.4%
County of Jasper Indiana, Refunding RB, Northern Indiana Public Service Co., Series C (NPFGC), 5.85%, 4/01/19		2,000		2,260,920

Iowa — 0.6%
Iowa Higher Education Loan Authority, Refunding RB, Private College Facility:
5.00%, 9/01/20		1,000		1,038,530
5.00%, 9/01/22		2,315		2,352,642

				3,391,172

Kansas — 1.5%
City of Dodge City Kansas, RB (AGC), 4.00%, 6/01/24		2,245		2,310,442
Kansas Development Finance Authority, Refunding RB:
Adventist Health, 5.00%, 11/15/23		1,500		1,659,645
Adventist/Sunbelt, Series D, 5.00%, 11/15/24		1,000		1,081,240
Sisters of Leavenworth, Series A, 4.00%, 1/01/22		3,775		3,821,168

				8,872,495

Kentucky — 3.1%
Kentucky Economic Development Finance Authority, Refunding RB, Owensboro Medical Health System, Series A, 5.25%, 6/01/23		8,650		8,895,054
Kentucky State Property & Buildings Commission, Refunding RB, Project No. 93 (AGC), 5.25%, 2/01/24		8,000		9,024,560

				17,919,614

Louisiana — 3.2%
Louisiana Public Facilities Authority, RB (NPFGC):
Nineteenth Judicial District Court, 5.50%, 6/01/41		2,000		2,093,120
University of New Orleans Research & Technology, 5.25%, 3/01/26		6,965		7,310,394
Louisiana Public Facilities Authority, Refunding RB, Entergy Gulf States Louisiana, LLC Project, Series A, 5.00%, 9/01/28		5,000		5,059,600
New Orleans Aviation Board Louisiana, Refunding GARB, Restructuring, Series A-2 (AGC), 6.00%, 1/01/23		850		979,617
Port of New Orleans Louisiana, Refunding RB, Continental Grain Co. Project, 6.50%, 1/01/17		3,500		3,500,595

				18,943,326


Municipal Bonds		Par (000)	Value

Maine — 0.3%
Portland New Public Housing Authority Maine, Refunding RB, Senior Living, Series A, 6.00%, 2/01/34	$	1,965	$	1,970,915

Maryland — 0.5%
Maryland EDC, RB, Transportation Facilities Project, Series A, 5.13%, 6/01/20		1,750		1,827,420
Maryland EDC, Refunding RB, CNX Marine Terminals, Inc., 5.75%, 9/01/25		790		806,590
Maryland Industrial Development Financing Authority, RB, Our Lady of Good Counsel School, Series A, 6.00%, 5/01/35		500		496,195

				3,130,205

Massachusetts — 0.7%
Massachusetts Development Finance Agency, RB, Ogden Haverhill Project, Series B, AMT:
5.35%, 12/01/15		1,210		1,211,428
5.50%, 12/01/19		2,000		2,002,360
Massachusetts Health & Educational Facilities Authority, RB, Winchester Hospital, 5.00%, 7/01/25		1,060		1,066,392

				4,280,180

Michigan — 4.2%
City of Detroit Michigan, Refunding RB, Second Lien, Series C (BHAC), 5.75%, 7/01/26		4,235		4,670,231
Kalamazoo Hospital Finance Authority, Refunding RB, Bronson Methodist Hospital, 4.25%, 5/15/25		2,120		2,027,377
Michigan State Hospital Finance Authority, Refunding RB:
Hospital, Henry Ford Health, 5.25%, 11/15/24		4,900		5,063,758
Hospital, Oakwood Obligation Group, Series A, 6.00%, 4/01/22		4,795		4,937,603
Wayne County Airport Authority, RB, Detroit Metropolitan Wayne County Airport, AMT (AGC), 4.75%, 12/01/18		7,665		7,920,628

				24,619,597

Minnesota — 1.7%
City of St. Cloud Minnesota, RB, CentraCare Health System, Series A, 4.25%, 5/01/21		2,300		2,346,920
Minneapolis & St. Paul Housing & Redevelopment Authority, RB, HealthPartners Obligation Group Project:
6.00%, 12/01/19		1,000		1,050,470
6.00%, 12/01/21		2,545		2,652,348
Minnesota Higher Education Facilities Authority, RB, St. Olaf College, Series 7-F, 4.50%, 10/01/30		2,000		2,048,700
Minnesota State Municipal Power Agency, RB, Series A, 5.25%, 10/01/24		2,000		2,114,400

				10,212,838

Mississippi — 1.6%
Mississippi Business Finance Corp., Refunding RB, System Energy Resource Inc. Project:
5.88%, 4/01/22		5,000		5,025,000
5.90%, 5/01/22		3,110		3,125,550
Mississippi Hospital Equipment & Facilities Authority, Refunding RB, Baptist Memorial Healthcare, Series B2, 4.50%, 9/01/23		1,120		1,169,784

				9,320,334

Missouri — 1.4%
Missouri State Health & Educational Facilities Authority, RB, SSM Health Care, Series B, 4.25%, 6/01/25		8,125		8,194,875

Montana — 0.5%
Montana Facility Finance Authority, Refunding RB, Series B, 5.00%, 1/01/24		2,625		2,892,540


See Notes to Financial Statements.

42	SEMI-ANNUAL REPORT	OCTOBER 31, 2010




Schedule of Investments (continued)	BlackRock Muni Intermediate Duration Fund, Inc. (MUI)
	(Percentages shown are based on Net Assets)


Municipal Bonds		Par (000)	Value

Nebraska — 1.5%
Douglas County Hospital Authority No. 2, RB, Health Facilities, Immanuel Obligation Group, 5.50%, 1/01/30	$	500	$	520,415
Douglas County School District No. 17 Nebraska, GO, Refunding:
2.00%, 6/15/24		4,390		3,636,939
2.00%, 6/15/25		4,480		3,634,445
Lancaster County Hospital Authority No. 1, RB, Immanuel Obligation Group, 5.50%, 1/01/30		1,000		1,038,590

				8,830,389

Nevada — 1.0%
County of Clark Nevada, Special Assessment Bonds, Special Improvement District No. 142, Local Improvement, 6.38%, 8/01/23		2,110		2,058,579
County of Humboldt Nevada, Refunding RB, Idaho Power Co. Project, 5.15%, 12/01/24		3,800		4,045,974

				6,104,553

New Jersey — 11.5%
Garden State Preservation Trust, RB, Election of 2005, Series A (AGM):
5.80%, 11/01/21		3,635		4,320,706
5.80%, 11/01/23		5,050		5,946,526
New Jersey EDA, RB:
Cigarette Tax, 5.75%, 6/15/29		9,810		9,655,100
Continental Airlines Inc. Project, AMT, 6.63%, 9/15/12		5,540		5,614,845
Motor Vehicle Surcharge, Series A (NPFGC), 5.25%, 7/01/33		17,900		18,446,308
New Jersey EDA, Refunding RB:
New Jersey American Water Co., Series E, AMT, 4.70%, 12/01/25 (e)		3,250		3,223,513
School Facilities Construction, Series AA, 4.25%, 12/15/24		5,000		5,130,650
New Jersey Health Care Facilities Financing Authority, Refunding RB, Hackensack University Medical, Series B (AGM), 4.00%, 1/01/24		1,000		981,070
New Jersey Higher Education Assistance Authority, Refunding RB, Series 1A, 4.75%, 12/01/21		2,400		2,503,968
New Jersey State Housing & Mortgage Finance Agency, RB, S/F Housing, Series X, AMT, 5.10%, 10/01/23		4,500		4,691,520
New Jersey Transportation Trust Fund Authority, RB, CAB, Transportation System, Series C (AMBAC), 5.71%, 12/15/25 (f)		9,450		4,437,437
South Jersey Port Corp., RB, Marine Terminal, Series O-1 (AGC), 4.63%, 1/01/23		1,375		1,480,518
University of Medicine & Dentistry of New Jersey, RB, Series A (AMBAC), 5.50%, 12/01/23		1,000		1,025,100

				67,457,261

New Mexico — 1.9%
New Mexico Finance Authority, RB, Senior Lien, Series A (NPFGC), 5.13%, 6/15/14 (a)		9,520		10,928,389

New York — 24.4%
City of New York New York, GO:
Series D1, 5.13%, 12/01/26		4,615		5,021,628
Sub-Series I-1, 5.50%, 4/01/21		5,000		5,865,150
Dutchess County Industrial Development Agency New York, RB, St. Francis Hospital, Series B, 7.25%, 3/01/19		895		915,272
Long Island Power Authority, Refunding RB, Series A, 5.50%, 4/01/24		1,475		1,665,570
Metropolitan Transportation Authority, RB, Transportation, Series A, 5.00%, 11/15/25		1,980		2,118,244


Municipal Bonds		Par (000)	Value

New York (concluded)
Metropolitan Transportation Authority, Refunding RB:
Series A, 5.13%, 1/01/29	$	8,000	$	8,253,360
Series B, 5.25%, 11/15/25		4,000		4,505,560
Monroe County Industrial Development Corp., RB, Unity Hospital of Rochester Project (FHA), 4.20%, 8/15/25 (e)		1,345		1,352,814
New York City Industrial Development Agency, RB:
Continental Airlines Inc. Project, Mandatory Put Bonds, AMT, 8.38%, 11/01/16		3,500		3,549,560
New York City Industrial Development Agency, RB:
Special Needs Facilities Pooled Program, Series C-1, 6.80%, 7/01/19		2,055		2,072,509
New York City Industrial Development Agency, Refunding RB, New York Stock Exchange Project, Series A, 4.25%, 5/01/24		2,740		2,826,885
New York City Transitional Finance Authority, RB:
Fiscal 2007, Series S-1 (NPFGC), 5.00%, 7/15/24		500		539,315
Fiscal 2009, Series S-3, 5.00%, 1/15/23		3,560		3,871,536
New York Liberty Development Corp., Refunding RB, Second Priority, Bank of America Tower at One Bryant Park Project, 5.63%, 7/15/47		4,000		4,167,400
New York State Dormitory Authority, LRB, Municipal Health Facilities, Sub-Series 2-4, 5.00%, 1/15/27		6,900		7,253,073
New York State Dormitory Authority, RB:
Interagency Council Pooled, Series A-1, 4.25%, 7/01/25		405		411,087
Mental Health Services Facilities Improvement, Series A (AGM), 5.00%, 2/15/22		4,000		4,412,600
Mount Sinai School of Medicine, Series A (NPFGC), 5.15%, 7/01/24		1,000		1,063,210
North Shore-Long Island Jewish Health System, Series A, 5.50%, 5/01/30		1,495		1,581,276
University of Rochester, Series A, 4.00%, 7/01/24		1,515		1,571,752
University of Rochester, Series C, 4.00%, 7/01/24		625		648,888
New York State Dormitory Authority, Refunding RB:
Mount Sinai Hospital, Series A, 4.25%, 7/01/23		4,575		4,601,855
North Shore-Long Island Jewish Health System, Series E, 5.00%, 5/01/22		650		690,358
North Shore-Long Island Jewish Health System, Series E, 5.00%, 5/01/23		2,160		2,281,414
Yeshiva University, 4.00%, 9/01/23		2,860		2,978,862
Yeshiva University, 4.25%, 9/01/24		2,750		2,882,055
New York State Environmental Facilities Corp., RB, Environment, Series A (FGIC), 5.25%, 12/15/14 (a)		7,380		8,668,031
New York State Urban Development Corp., Refunding RB, Service Contract, Series B, 5.00%, 1/01/21		8,000		8,932,080
Port Authority of New York & New Jersey, Refunding RB:
Consolidated, 152nd Series, AMT, 5.00%, 11/01/23		2,500		2,634,525
Consolidated, 153rd Series, 5.00%, 7/15/24		2,010		2,265,511
Sales Tax Asset Receivable Corp., RB, Series A (NPFGC), 5.00%, 10/15/20		9,070		10,103,164
Tobacco Settlement Financing Corp. New York, RB, Asset-Backed:
Series A-1 (AMBAC), 5.25%, 6/01/22		6,510		6,983,407
Series B-1C, 5.50%, 6/01/21		7,000		7,574,420
Series B-1C, 5.50%, 6/01/22		10,000		10,797,500
Trust for Cultural Resources, RB, Carnegie Hall, Series A, 5.00%, 12/01/29		4,250		4,544,312
United Nations Development Corp. New York, Refunding RB, Series A, 4.25%, 7/01/24		2,985		3,057,804

				142,661,987


See Notes to Financial Statements.

SEMI-ANNUAL REPORT	OCTOBER 31, 2010	43




Schedule of Investments (continued)	BlackRock Muni Intermediate Duration Fund, Inc. (MUI)
	(Percentages shown are based on Net Assets)


Municipal Bonds		Par (000)	Value

North Carolina — 0.8%
Gaston County Industrial Facilities & Pollution Control Financing Authority North Carolina, RB, Exempt Facilities, National Gypsum Co. Project, AMT, 5.75%, 8/01/35	$	3,105	$	2,571,157
North Carolina Eastern Municipal Power Agency, Refunding RB, Series B, 5.00%, 1/01/26		1,925		2,056,574

				4,627,731

Northern Mariana Islands — 0.8%
Commonwealth of the Northern Mariana Islands, GO, Series A:
6.75%, 10/01/13 (a)		3,800		4,451,738
6.75%, 10/01/33		250		247,453

				4,699,191

Pennsylvania — 7.9%
City of Philadelphia Pennsylvania, RB, Series A, AMT (AGM), 5.00%, 6/15/20		2,895		3,065,921
City of Philadelphia Pennsylvania, Refunding RB, Series B, AMT (AGM), 5.00%, 6/15/19		3,905		4,176,163
City of Pittsburgh Pennsylvania, GO, Refunding, Series B (AGM), 5.25%, 9/01/17		9,630		10,842,609
City of Pittsburgh Pennsylvania, GO, Series C (AGM), 5.25%, 9/01/18		6,430		7,143,666
Montgomery County IDA Pennsylvania, MRB, Whitemarsh Continuing Care, 6.00%, 2/01/21		3,500		3,380,195
Montgomery County IDA Pennsylvania, RB, New Regional Medical Center Project (FHA), 5.00%, 8/01/24		3,500		3,704,750
Pennsylvania Economic Development Financing Authority, RB, National Gypsum Co., Series A, AMT, 6.25%, 11/01/27		7,710		6,880,481
South Fork Municipal Authority, RB, Conemaugh Valley Memorial, Series A (AGC), 6.00%, 7/01/26		6,225		6,955,504

				46,149,289

Puerto Rico — 12.3%
Commonwealth of Puerto Rico, GO, Refunding, Public Improvement, Series A (NPFGC), 5.50%, 7/01/21		3,290		3,579,290
Puerto Rico Aqueduct & Sewer Authority, RB, Senior Lien, Series A (AGC), 5.00%, 7/01/25		3,215		3,427,608
Puerto Rico Electric Power Authority, RB:
Series CCC, 4.25%, 7/01/23		2,360		2,373,853
Series NN, 5.50%, 7/01/13 (a)		5,000		5,642,750
Series TT, 5.00%, 7/01/27		8,500		8,791,635
Series WW, 5.50%, 7/01/38		3,000		3,152,880
Puerto Rico Highway & Transportation Authority, RB:
Series Y (AGM), 6.25%, 7/01/21		3,000		3,415,950
Subordinate (FGIC), 5.75%, 7/01/21		4,375		4,512,069
Puerto Rico Housing Finance Authority, Refunding RB, Subordinate, Capital Fund Modernization, 5.13%, 12/01/27		13,900		14,236,658
Puerto Rico Industrial Medical & Environmental Pollution Control Facilities Financing Authority, RB, Special Facilities, American Airlines, Series A, 6.45%, 12/01/25		5,390		5,066,869
Puerto Rico Public Buildings Authority, RB, Government Facilities, Series I, 5.50%, 7/01/14 (a)		8,000		9,282,160
Puerto Rico Public Buildings Authority, Refunding RB, Government Facilities:
Series D, 5.25%, 7/01/27		3,930		3,956,567
Series M-3 (NPFGC), 6.00%, 7/01/28		1,900		2,049,796
Puerto Rico Sales Tax Financing Corp., RB, First Sub-Series A, 5.75%, 8/01/37		2,000		2,171,580

				71,659,665


Municipal Bonds		Par (000)	Value

Rhode Island — 0.5%
Rhode Island Health & Educational Building Corp., RB, University of Rhode Island, Series A (AGC), 4.75%, 9/15/24	$	2,500	$	2,683,300

South Carolina — 0.2%
County of Florence South Carolina, RB, McLeod Regional Medical Center, Series A, 4.50%, 11/01/25		1,000		1,004,240

South Dakota — 0.4%
Educational Enhancement Funding Corp., RB, Series B, 6.50%, 6/01/32		2,200		2,253,350

Tennessee — 2.1%
Chattanooga-Hamilton County Hospital Authority Tennessee, Refunding RB, Erlanger Health (AGM), 5.00%, 10/01/22		1,620		1,726,110
Johnson City Health & Educational Facilities Board, RB, Appalachian Christian Village Project, Series A, 6.00%, 2/15/19		1,660		1,659,984
Memphis-Shelby County Sports Authority Inc., Refunding RB, Memphis Arena Project:
Series A, 5.00%, 11/01/23		2,695		2,936,903
Series B, 5.00%, 11/01/22		1,000		1,096,390
Shelby County Health Educational & Housing Facilities Board, RB, Germantown Village, Series A:
6.75%, 12/01/18		3,550		3,425,679
7.00%, 12/01/23		1,450		1,377,355

				12,222,421

Texas — 3.4%
Brazos River Authority, Refunding RB, TXU Electric Co. Project, Series C, Mandatory Put Bonds, AMT, 5.75%, 5/01/36 (b)		6,770		6,431,500
Dallas-Fort Worth International Airport Facilities Improvement Corp., RB, Series 2001-A-1, AMT, 6.15%, 1/01/16		4,000		4,001,880
Dallas-Fort Worth International Airport Facilities Improvement Corp., Refunding RB, Series A, Sub-Series 2, Mandatory Put Bonds, AMT, 9.00%, 5/01/29 (b)		3,000		3,154,230
Gulf Coast IDA, RB, Citgo Petroleum Corp. Project, Mandatory Put Bonds, AMT, 7.50%, 5/01/25 (b)		2,440		2,495,144
Gulf Coast Waste Disposal Authority, Refunding RB, Series A, AMT, 6.10%, 8/01/24		2,000		2,026,960
Houston Health Facilities Development Corp., RB, Buckingham Senior Living Community, Series A, 7.00%, 2/15/14 (a)		1,500		1,791,615

				19,901,329

U.S. Virgin Islands — 1.5%
United States Virgin Islands, Refunding RB, Senior Secured, Hovensa Coker Project, AMT, 6.50%, 7/01/21		1,860		1,892,271
Virgin Islands Public Finance Authority, RB, Senior Secured, Hovensa Refinery, AMT, 6.13%, 7/01/22		6,750		6,837,413

				8,729,684

Virginia — 3.2%
James City County EDA, Refunding RB, First Mortgage, Williamsburg Lodge, Series A:
5.75%, 3/01/17		3,285		3,352,310
6.00%, 3/01/23		1,150		1,164,616
Roanoke Economic Development Authority, Refunding RB, Carilion Health System, Series B (AGM), 5.00%, 7/01/38		4,705		4,824,413
Tobacco Settlement Financing Corp. Virginia, RB, Asset-Backed, 5.63%, 6/01/15 (a)		7,800		9,294,090

				18,635,429


See Notes to Financial Statements.

44	SEMI-ANNUAL REPORT	OCTOBER 31, 2010




Schedule of Investments (continued)	BlackRock Muni Intermediate Duration Fund, Inc. (MUI)
	(Percentages shown are based on Net Assets)


Municipal Bonds		Par (000)	Value

West Virginia — 0.7%
West Virginia Hospital Finance Authority, Refunding RB, Charleston, Series A, 5.13%, 9/01/23	$	4,000	$	4,251,480

Wisconsin — 0.4%
Wisconsin Housing & EDA, RB, Series C, AMT, 4.85%, 9/01/26		2,000		2,026,800

Total Municipal Bonds — 136.2%				796,325,553


Municipal Bonds Transferred to Tender Option Bond Trusts (g)

California — 4.9%
City of San Jose California, GO, Libraries, Parks, and Public Safety Project (NPFGC), 5.00%, 9/01/30	3,101	3,253,191
Peralta Community College District, GO, Election of 2000, Series D (AGM), 5.00%, 8/01/30	10,140	10,570,139
Sequoia Union High School District California, GO, Refunding, Election of 2004, Series B (AGM), 5.50%, 7/01/35	9,028	9,558,709
Tamalpais Union High School District California, GO, Election of 2001 (AGM), 5.00%, 8/01/28	4,875	5,128,354

		28,510,393

Illinois — 2.3%
McHenry County Conservation District Illinois, GO (AGM), 5.13%, 2/01/27	12,695	13,683,827

Massachusetts — 1.5%
Massachusetts School Building Authority, RB, Series A (AGM), 5.00%, 8/15/30	8,338	8,824,040

Minnesota — 1.9%
State of Minnesota, GO, State Various Purpose, Series A, 4.00%, 8/01/29	10,525	10,842,004

New Jersey — 2.1%
New Jersey Transportation Trust Fund Authority, RB, Transportation System, Series D (AGM), 5.00%, 6/15/19	11,120	12,227,219

New York — 6.9%
City of New York New York, GO, Sub-Series B-1, 5.25%, 9/01/22	8,250	9,340,650
New York City Municipal Water Finance Authority, Refunding RB, Series A, 4.75%, 6/15/30	8,000	8,436,480
New York State Urban Development Corp., RB, State Personal Income Tax, State Facilities, Series A-1 (NPFGC), 5.25%, 3/15/34	10,000	10,461,600
Sales Tax Asset Receivable Corp., RB, Series A (AMBAC), 5.25%, 10/15/27	11,101	12,258,074

		40,496,804

Washington — 1.9%
Snohomish County School District No. 15-Edmonds Washington, GO (NPFGC), 5.00%, 12/01/19	10,000	11,308,500

Total Municipal Bonds Transferred to Tender Option Bond Trusts — 21.5%		125,892,787

Total Long-Term Investments (Cost — $883,491,937) — 157.7%		922,218,340


Short-Term Securities	Shares		Value

FFI Institutional Tax-Exempt Fund, 0.13% (h)(i)		10,237,333	$	10,237,333

Total Short-Term Securities (Cost — $10,237,333) — 1.7%				10,237,333

*Total Investments (Cost — $893,729,270) — 159.4%**				932,455,673
Other Assets Less Liabilities — 1.1%				6,202,963
Liability for Trust Certificates, Including
Interest Expense and Fees Payable — (11.4)%				(66,658,625	)
Preferred Shares, at Redemption Value — (49.1)%				(287,239,117	)

Net Assets Applicable to Common Shares — 100.0%			$	584,760,894


*	The cost and unrealized appreciation (depreciation) of investments as of October 31, 2010, as computed for federal income tax purposes, were as follows:


Aggregate cost	$	826,656,040

Gross unrealized appreciation	$	45,339,792
Gross unrealized depreciation		(6,148,971	)

Net unrealized appreciation	$	39,190,821


(a)	US government securities, held in escrow, are used to pay interest on this security as well as to retire the bond in full at the date indicated, typically at a premium to par.

(b)	Variable rate security. Rate shown is as of report date.

(c)	Non-income producing security.

(d)	Issuer filed for bankruptcy and/or is in default of interest payments.

(e)	When-issued security. Unsettled when-issued transactions were as follows:


Counterparty	Value			Unrealized Appreciation (Depreciation)

JPMorgan Securities	$	1,352,814	$	10,827
Morgan Stanley Co. Inc.	$	3,223,513	$	(26,487	)


(f)	Represents a zero-coupon bond. Rate shown reflects the current yield as of report date.

(g)	Securities represent bonds transferred to a tender option bond trust in exchange for which the Fund acquired residual interest certificates. These securities serve as collateral in a financing transaction. See Note 1 of the Notes to Financial Statements for details of municipal bonds transferred to tender option bond trusts.

(h)	Investments in companies considered to be an affiliate of the Fund during the period, for purposes of Section 2(a)(3) of the Investment Company Act of 1940, as amended, were as follows:


Affiliate	Shares Held at April 30, 2010		Net Activity			Shares Held at October 31, 2010		Income

FFI Institutional Tax-Exempt Fund		17,541,876		(7,304,543	)		10,237,333	$	7,206


(i)	Represents the current yield as of report date.


See Notes to Financial Statements.

SEMI-ANNUAL REPORT	OCTOBER 31, 2010	45




Schedule of Investments (concluded)	BlackRock Muni Intermediate Duration Fund, Inc. (MUI)


•	Fair Value Measurements — Various inputs are used in determining the fair value of investments, which are as follows:

	•	Level 1 — price quotations in active markets/exchanges for identical assets and liabilities

	•	Level 2 — other observable inputs (including, but not limited to: quoted prices for similar assets or liabilities in markets that are active, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the assets or liabilities (such as interest rates, yield curves, volatilities, prepayment speeds, loss severities, credit risks and default rates) or other market-corroborated inputs)

	•	Level 3 — unobservable inputs based on the best information available in the circumstances, to the extent observable inputs are not available (including the Fund’s own assumptions used in determining the fair value of investments) The inputs or methodologies used for valuing securities are not necessarily an indication of the risk associated with investing in those securities. For information about the Fund’s policy regarding valuation of investments and other significant accounting policies, please refer to Note 1 of the Notes to Financial Statements.

	The following table summarizes the inputs used as of October 31, 2010 in determining the fair valuation of the Fund’s investments:


Valuation Inputs	Level 1		Level 2		Level 3		Total

Assets:
Investments in Securities:
Long-Term Investments¹		—	$	922,218,340		—	$	922,218,340
Short-Term Securities	$	10,237,333		—		—		10,237,333

Total	$	10,237,333	$	922,218,340		—	$	932,455,673


	¹	See above Schedule of Investments for values in each state or political subdivision.


See Notes to Financial Statements.

46	SEMI-ANNUAL REPORT	OCTOBER 31, 2010




Schedule of Investments October 31, 2010 (Unaudited)	BlackRock MuniVest Fund II, Inc. (MVT)
	(Percentages shown are based on Net Assets)


Municipal Bonds	Par (000)		Value

Alabama — 1.0%
Prattville IDB Alabama, RB, International Paper Co. Project, Series A, AMT, 4.75%, 12/01/30	$	3,500	$	3,151,540

Arizona — 2.6%
Maricopa County IDA Arizona, RB, Arizona Charter Schools Project, Series A, 6.75%, 7/01/29		1,000		694,890
Maricopa County Pollution Control Corp., Refunding RB, Southern California Edison Co., Series A, 5.00%, 6/01/35		1,705		1,742,732
Pima County IDA, RB, Arizona Charter Schools Project, Series C, 6.75%, 7/01/31		1,920		1,927,065
Pima County IDA, Refunding IDRB, Tucson Electric Power, 5.75%, 9/01/29		1,110		1,147,052
Pima County IDA, Refunding RB, Charter Schools II, Series A, 6.75%, 7/01/21		475		477,931
Salt River Project Agricultural Improvement & Power District, RB, Series A, 5.00%, 1/01/38		1,980		2,088,385

				8,078,055

California — 13.4%
California Health Facilities Financing Authority, Refunding RB, St. Joseph Health System, Series A, 5.75%, 7/01/39		2,200		2,338,644
California State Public Works Board, RB, Various Capital Projects, Sub-Series I-1, 6.38%, 11/01/34		1,185		1,298,843
Los Angeles Department of Airports, RB, Series A, 5.25%, 5/15/39		800		843,664
Los Angeles Department of Airports, Refunding RB, Senior, Los Angeles International Airport, Series A, 5.00%, 5/15/40		5,930		6,148,580
San Francisco City & County Public Utilities Commission, RB, Series B, 5.00%, 11/01/39		9,475		10,038,478
State of California, GO, Various Purpose:
6.00%, 3/01/33		2,525		2,900,316
6.50%, 4/01/33		14,925		17,546,875

				41,115,400

Colorado — 3.9%
Colorado Health Facilities Authority, RB, Catholic Health Initiatives, Series D, 6.25%, 10/01/33		1,060		1,192,341
Colorado Health Facilities Authority, Refunding RB, Sisters of Leavenworth, Series A, 5.00%, 1/01/40		2,190		2,231,807
Colorado Housing & Finance Authority, Refunding RB, S/F Program, Senior Series A-2, AMT, 7.50%, 4/01/31		95		100,145
Elk Valley Public Improvement Corp., RB, Public Improvement Fee:
Series A, 7.35%, 9/01/31		3,025		2,897,133
Series B, 7.45%, 9/01/31		400		386,948
Plaza Metropolitan District No. 1 Colorado, Tax Allocation Bonds, Public Improvement Fee, Tax Increment:
8.00%, 12/01/25		3,300		3,447,741
Subordinate, 8.13%, 12/01/25		820		762,502
University of Colorado, RB, Series A, 5.75%, 6/01/28		750		868,200

				11,886,817

Connecticut — 2.2%
Connecticut State Health & Educational Facility Authority, RB:
Ascension Health Senior Credit, 5.00%, 11/15/40		1,375		1,440,161
Wesleyan University, 5.00%, 7/01/35		3,385		3,659,761
Mohegan Tribe of Indians of Connecticut, RB, Public Improvement, Priority Distribution, 6.25%, 1/01/31		2,000		1,656,460

				6,756,382

Delaware — 1.3%
Delaware State EDA, RB, Exempt Facilities, Indian River Power, 5.38%, 10/01/45		4,065		4,048,903


Municipal Bonds	Par (000)		Value

District of Columbia — 1.9%
Metropolitan Washington Airports Authority, RB:
CAB, Second Senior Lien, Series B (AGC), 7.05%, 10/01/33 (a)	$	6,590	$	1,662,262
CAB, Second Senior Lien, Series B (AGC), 7.08%, 10/01/34 (a)		4,830		1,141,957
CAB, Second Senior Lien, Series B (AGC), 7.10%, 10/01/35 (a)		6,515		1,443,268
First Senior Lien, Series A, 5.25%, 10/01/44		1,500		1,582,995

				5,830,482

Florida — 6.4%
County of Miami-Dade Florida, RB, Water & Sewer System, 5.00%, 10/01/34		5,680		5,914,300
County of Miami-Dade Florida, Refunding RB, Miami International Airport:
AMT (AGC), 5.00%, 10/01/40		4,975		4,951,817
Series A-1, 5.38%, 10/01/41		1,165		1,202,478
Fiddlers Creek Community Development District No. 2, Special Assessment Bonds (b)(c):
Series A, 6.38%, 5/01/35		2,350		752,000
Series B, 5.75%, 5/01/13		400		128,000
Hillsborough County IDA, RB:
H. Lee Moffitt Cancer Center Project, Series A, 5.25%, 7/01/37		1,400		1,389,962
National Gypsum Co., Series B, AMT, 7.13%, 4/01/30		2,720		2,651,510
Midtown Miami Community Development District, Special Assessment Bonds, Series A, 6.25%, 5/01/37		915		899,875
Palm Coast Park Community Development District, Special Assessment Bonds, 5.70%, 5/01/37		1,225		764,804
Preserve at Wilderness Lake Community Development District, RB, Series A, 7.10%, 5/01/33		875		882,744

				19,537,490

Georgia — 4.9%
De Kalb Private Hospital Authority, Refunding RB, Children’s Healthcare, 5.25%, 11/15/39		845		889,075
Fulton County Residential Care Facilities for the Elderly Authority, Refunding RB, Canterbury Court Project, Series A, 6.13%, 2/15/26		2,000		1,896,620
Metropolitan Atlanta Rapid Transit Authority, RB, Third Series, 5.00%, 7/01/39		3,465		3,716,628
Municipal Electric Authority of Georgia, RB, Series W:
6.60%, 1/01/18		5,560		6,536,837
6.60%, 1/01/18 (d)		380		431,171
Municipal Electric Authority of Georgia, Refunding RB, Series X, 6.50%, 1/01/20		1,205		1,453,037

				14,923,368

Guam — 0.5%
Territory of Guam, GO, Series A:
6.00%, 11/15/19		630		673,483
6.75%, 11/15/29		895		991,338
7.00%, 11/15/39		615		689,052

				2,353,873

Idaho — 0.00%
Idaho Housing & Finance Association, Refunding RB, S/F Mortgage, Senior Series E-2, AMT, 6.90%, 1/01/27		15		15,030


See Notes to Financial Statements.

SEMI-ANNUAL REPORT	OCTOBER 31, 2010	47




Schedule of Investments (continued)	BlackRock MuniVest Fund II, Inc. (MVT)
	(Percentages shown are based on Net Assets)


Municipal Bonds	Par (000)		Value

Illinois — 12.7%
City of Chicago Illinois, RB, Series C, AMT (Ginnie Mae), 7.00%, 3/01/32	$	125	$	125,040
City of Chicago Illinois, Special Assessment Bonds, Lake Shore East, 6.75%, 12/01/32		800		785,536
City of Chicago Illinois, Tax Allocation Bonds, Kingsbury Redevelopment Project, Series A, 6.57%, 2/15/13		900		900,351
Illinois Finance Authority, RB:
Advocate Health Care Network, Series D, 6.50%, 11/01/38		5,000		5,676,800
Community Rehabilitation Providers Facilities, Series A, 6.50%, 7/01/22		1,000		999,880
Navistar International, Recovery Zone, 6.50%, 10/15/40		1,540		1,597,765
Illinois Finance Authority, Refunding RB:
Central DuPage Health, Series B, 5.50%, 11/01/39		1,610		1,709,756
Friendship Village Schaumburg, Series A, 5.63%, 2/15/37		250		206,250
Metropolitan Pier & Exposition Authority, Refunding RB (AGM), McCormick Place Expansion Project:
CAB, Series B, 6.25%, 6/15/45 (a)		12,580		1,513,500
CAB, Series B, 6.25%, 6/15/46 (a)		6,400		721,792
Series B, 5.00%, 6/15/50		3,150		3,144,424
Series B-2, 5.00%, 6/15/50		2,500		2,461,675
Regional Transportation Authority, RB:
Series A (AMBAC), 7.20%, 11/01/20		1,500		1,857,300
Series A (NPFGC), 6.70%, 11/01/21		7,000		8,630,790
Series C (NPFGC), 7.75%, 6/01/20		2,500		3,253,450
State of Illinois, RB, Build Illinois, Series B, 5.25%, 6/15/34		630		659,314
Village of Hodgkins Illinois, RB, MBM Project, AMT, 6.00%, 11/01/23		2,800		2,802,268
Village of Wheeling Illinois, Tax Allocation Bonds, North Milwaukee/Lake-Cook TIF Project, 6.00%, 1/01/25		1,550		1,465,060

				38,510,951

Indiana — 6.1%
Indiana Finance Authority, RB, Sisters of St. Francis Health, 5.25%, 11/01/39		840		874,852
Indiana Finance Authority, Refunding RB:
Ascension Health Senior Credit, Series B-5, 5.00%, 11/15/36		1,500		1,528,935
Parkview Health System, Series A, 5.75%, 5/01/31		3,295		3,473,853
Indiana Health & Educational Facilities Financing Authority, RB, Clarian Health Obligation, Series A, 5.25%, 2/15/40		500		499,215
Indiana Transportation Finance Authority, RB, Series A:
7.25%, 6/01/15		160		165,955
6.80%, 12/01/16		3,775		4,306,595
Indianapolis Local Public Improvement Bond Bank, Refunding RB, Series D, 6.75%, 2/01/14		7,450		8,056,355

				18,905,760

Kansas — 0.6%
Kansas Development Finance Authority, Refunding RB, Sisters of Leavenworth, Series A, 5.00%, 1/01/40		1,660		1,706,629

Kentucky — 0.3%
Kentucky Economic Development Finance Authority, Refunding RB, Owensboro Medical Health System, Series A, 6.38%, 6/01/40		1,010		1,070,479

Louisiana — 3.6%
Port of New Orleans Louisiana, Refunding RB, Continental Grain Co. Project, 6.50%, 1/01/17		7,500		7,501,275
Sabine River Authority Louisiana, Refunding RB, International Paper Co. Project, 6.20%, 2/01/25		3,600		3,646,404

				11,147,679


Municipal Bonds	Par (000)		Value

Maryland — 2.0%
County of Montgomery Maryland, GO, West Germantown Development District, Senior Series A (Radian), 6.70%, 7/01/27	$	1,175	$	1,214,363
Maryland Community Development Administration, Refunding RB, Residential, Series D, AMT, 4.90%, 9/01/42		1,500		1,501,515
Maryland EDC, RB, Transportation Facilities Project, Series A, 5.75%, 6/01/35		435		453,196
Maryland EDC, Refunding RB, CNX Marine Terminals, Inc., 5.75%, 9/01/25		830		847,430
Maryland Health & Higher Educational Facilities Authority, RB:
King Farm Presbyterian Community, Series B, 5.00%, 1/01/17		875		855,426
University of Maryland Medical System, Series B (NPFGC), 7.00%, 7/01/22		1,000		1,189,640

				6,061,570

Massachusetts — 4.1%
Massachusetts HFA, HRB, Series A, AMT, 5.20%, 12/01/37		3,000		3,056,790
Massachusetts HFA, RB, S/F, Series 130, AMT, 5.00%, 12/01/32		2,720		2,738,333
Massachusetts HFA, Refunding HRB, AMT:
Series D, 4.85%, 6/01/40		2,770		2,693,963
Series F, 5.70%, 6/01/40		2,210		2,280,632
Massachusetts Health & Educational Facilities Authority, Refunding RB, Partners Healthcare, Series J1, 5.00%, 7/01/39		1,805		1,856,045

				12,625,763

Michigan — 6.9%
City of Detroit Michigan, RB, Senior Lien, Series B (AGM), 7.50%, 7/01/33		910		1,108,908
Flint Hospital Building Authority Michigan, Refunding RB, Hurley Medical Center (ACA), 6.00%, 7/01/20		2,695		2,688,855
Kalamazoo Hospital Finance Authority, Refunding RB, Bronson Methodist Hospital, 5.50%, 5/15/36		1,380		1,413,934
Michigan State Hospital Finance Authority, Refunding RB:
Henry Ford Health System, Series A, 5.25%, 11/15/46		7,050		7,036,182
McLaren Health Care, 5.75%, 5/15/38		8,560		9,008,544

				21,256,423

Mississippi — 3.1%
County of Lowndes Mississippi, Refunding RB, Weyerhaeuser Co. Project, Series A, 6.80%, 4/01/22		3,000		3,387,240
Mississippi Business Finance Corp., Refunding RB, System Energy Resource Inc. Project, 5.90%, 5/01/22		5,000		5,025,000
University of Southern Mississippi, RB, Campus Facilities Improvements Project, 5.38%, 9/01/36		1,065		1,155,727

				9,567,967

Montana — 0.8%
Montana Facility Finance Authority, Refunding RB, Sisters of Leavenworth, Series A, 4.75%, 1/01/40		2,265		2,343,188

Nevada — 0.2%
County of Clark Nevada, Special Assessment Bonds, Special Improvement District No. 142, Local Improvement, 6.38%, 8/01/23		570		556,109


See Notes to Financial Statements.

48	SEMI-ANNUAL REPORT	OCTOBER 31, 2010




Schedule of Investments (continued)	BlackRock MuniVest Fund II, Inc. (MVT)
	(Percentages shown are based on Net Assets)


Municipal Bonds	Par (000)		Value

New Jersey — 2.8%
New Jersey EDA, RB:
Cigarette Tax, 5.50%, 6/15/24	$	2,420	$	2,422,444
Continental Airlines Inc. Project, AMT, 6.25%, 9/15/29		3,000		2,939,880
New Jersey Health Care Facilities Financing Authority, RB, Pascack Valley Hospital Association, 6.63%, 7/01/36 (b)(c)		1,680		17
New Jersey State Housing & Mortgage Finance Agency, RB, Series AA, 6.38%, 10/01/28		1,215		1,313,937
Tobacco Settlement Financing Corp. New Jersey, Refunding RB, Series 1A, 4.50%, 6/01/23		2,160		2,021,501

				8,697,779

New York — 7.9%
Metropolitan Transportation Authority, RB, Series 2008C, 6.50%, 11/15/28		9,405		11,107,775
New York City Industrial Development Agency, RB:
British Airways Plc Project, AMT, 7.63%, 12/01/32		1,920		1,967,040
Series C, 6.80%, 6/01/28		690		724,597
Special Needs Facilities Pooled Program, Series C-1, 6.50%, 7/01/17		890		887,090
New York City Transitional Finance Authority, RB, Fiscal 2009, Series S-3, 5.25%, 1/15/39		6,700		7,251,611
New York Liberty Development Corp., Refunding RB, Second Priority, Bank of America Tower at One Bryant Park Project, 6.38%, 7/15/49		1,220		1,307,144
Westchester County Industrial Development Agency New York, RB, Special Needs Facilities Pooled Program, Series E-1, 6.50%, 7/01/17		1,000		996,730

				24,241,987

North Carolina — 2.9%
Gaston County Industrial Facilities & Pollution Control Financing Authority North Carolina, RB, Exempt Facilities, National Gypsum Co. Project, AMT, 5.75%, 8/01/35		1,675		1,387,017
North Carolina Capital Facilities Finance Agency, RB, Duke Energy Carolinas, Series B, 4.38%, 10/01/31		1,610		1,578,573
North Carolina Capital Facilities Finance Agency, Refunding RB, Duke Energy Carolinas, Series A, 4.63%, 11/01/40		2,695		2,622,505
North Carolina Medical Care Commission, RB, Duke University Health System, Series A, 5.00%, 6/01/42		1,400		1,457,456
North Carolina Medical Care Commission, Refunding RB, Carolina Village Project, 6.00%, 4/01/38		2,000		1,750,900

				8,796,451

Ohio — 0.9%
Buckeye Tobacco Settlement Financing Authority, RB, Asset-Backed, Senior Series A-2, 6.50%, 6/01/47		3,250		2,717,520

Pennsylvania — 4.3%
Bucks County IDA, RB, Ann’s Choice Inc. Facility, Series A, 6.13%, 1/01/25		880		888,342
Lancaster County Hospital Authority, RB, Brethren Village Project, Series A, 6.50%, 7/01/40		2,000		1,989,340
Montgomery County IDA Pennsylvania, MRB, Whitemarsh Continuing Care:
6.13%, 2/01/28		470		433,082
6.25%, 2/01/35		1,090		985,709
Pennsylvania Economic Development Financing Authority, RB:
Aqua Pennsylvania Inc. Project, 5.00%, 11/15/40		1,890		1,948,193
National Gypsum Co., Series B, AMT, 6.13%, 11/01/27		2,000		1,760,800


Municipal Bonds	Par (000)		Value

Pennsylvania (concluded)
Pennsylvania Turnpike Commission, RB, Sub-Series B, 5.25%, 6/01/39	$	3,915	$	4,070,034
Philadelphia Authority for Industrial Development, RB, Commercial Development, AMT, 7.75%, 12/01/17		1,265		1,266,619

				13,342,119

Puerto Rico — 2.7%
Commonwealth of Puerto Rico, GO, Refunding, Public Improvement, Series C, 6.00%, 7/01/39		2,990		3,286,369
Puerto Rico Sales Tax Financing Corp., RB, First Sub-Series A, 6.50%, 8/01/44		4,255		4,898,101

				8,184,470

Tennessee — 0.7%
Johnson City Health & Educational Facilities Board, RB, Appalachian Christian Village Project, Series A, 6.00%, 2/15/24		1,000		989,080
Rutherford County Health & Educational Facilities Board, RB, Ascension Health Senior Credit Group, 5.00%, 11/15/40		1,025		1,078,269

				2,067,349

Texas — 9.4%
Brazos River Authority, Refunding RB, Texas Utility Co., Series, AMT, 7.70%, 4/01/33		1,500		555,000
Brazos River Harbor Navigation District, Refunding RB, Dow Chemical Co. Project, Series A7, AMT, 6.63%, 5/15/33		3,000		3,079,050
City of Dallas Texas, Refunding RB, 5.00%, 10/01/35		1,510		1,624,926
City of Houston Texas, RB, Special Facilities, Continental Airlines, Series E, AMT, 6.75%, 7/01/21		4,820		4,839,714
Harris County Health Facilities Development Corp., Refunding RB, Memorial Hermann Healthcare System, Series B, 7.25%, 12/01/35		2,000		2,296,260
North Texas Tollway Authority, Refunding RB, First Tier, Series A, 6.25%, 1/01/39		7,000		7,738,710
Texas Private Activity Bond Surface Transportation Corp., RB, Senior Lien:
LBJ Infrastructure Group LLC, LBJ Freeway Managed Lanes Project, 7.00%, 6/30/40		4,310		4,684,884
NTE Mobility Partners LLC, North Tarrant Express Managed Lanes Project, 6.88%, 12/31/39		3,875		4,204,917

				29,023,461

U.S. Virgin Islands — 2.0%
United States Virgin Islands, Refunding RB, Senior Secured, Hovensa Coker Project, AMT, 6.50%, 7/01/21		6,000		6,104,100

Utah — 0.9%
City of Riverton Utah, RB, IHC Health Services Inc., 5.00%, 8/15/41		2,780		2,890,088

Virginia — 1.8%
Fairfax County EDA, Refunding RB, Goodwin House Inc.:
5.13%, 10/01/37		1,000		997,780
5.13%, 10/01/42		3,440		3,394,592
Tobacco Settlement Financing Corp. Virginia, Refunding RB, Senior Series B1, 5.00%, 6/01/47		1,405		986,394

				5,378,766

Washington — 1.4%
Washington Health Care Facilities Authority, Refunding RB, Catholic Health Initiatives, Series D, 6.38%, 10/01/36		3,700		4,181,555


See Notes to Financial Statements.

SEMI-ANNUAL REPORT	OCTOBER 31, 2010	49




Schedule of Investments (continued)	BlackRock MuniVest Fund II, Inc. (MVT)
	(Percentages shown are based on Net Assets)


Municipal Bonds	Par (000)		Value

Wisconsin — 4.4%
State of Wisconsin, Refunding RB, Series A, 6.00%, 5/01/36	$	7,100	$	8,076,889
Wisconsin Health & Educational Facilities Authority, RB:
Ascension Health Senior Credit Group, 5.00%, 11/15/33		2,465		2,568,900
SynergyHealth Inc., 6.00%, 11/15/32		2,215		2,293,057
Wisconsin Housing & EDA, Refunding RB, Series A, AMT, 5.63%, 3/01/31		695		730,104

				13,668,950

Total Municipal Bonds — 120.6%				370,744,453




Municipal Bonds Transferred to Tender Option Bond Trusts (e)

California — 3.3%
Bay Area Toll Authority, Refunding RB, San Francisco Bay Area, Series F-1, 5.63%, 4/01/44	3,271	3,629,988
California Educational Facilities Authority, RB, University of Southern California, Series A, 5.25%, 10/01/39	2,610	2,825,873
Los Angeles Community College District California, GO, Election of 2001, Series A (AGM), 5.00%, 8/01/32	2,290	2,402,141
San Diego Community College District California, GO, Election of 2002, 5.25%, 8/01/33	1,077	1,167,928

		10,025,930

Colorado — 0.8%
Colorado Health Facilities Authority, Refunding RB, Catholic Healthcare, Series A, 5.50%, 7/01/34	2,129	2,293,508

Connecticut — 2.1%
Connecticut State Health & Educational Facility Authority, RB, Yale University, Series Z-3, 5.05%, 7/01/42	6,000	6,416,160

Illinois — 1.5%
City of Chicago Illinois, Refunding RB, Second Lien (AGM), 5.25%, 11/01/33	1,320	1,422,286
Illinois State Toll Highway Authority, RB, Series B, 5.50%, 1/01/33	2,999	3,242,510

		4,664,796

Maryland — 0.8%
Maryland State Transportation Authority, RB, Transportation Facility Project (AGM), 5.00%, 7/01/41	2,290	2,447,689

Massachusetts — 3.4%
Massachusetts School Building Authority, RB, Series A (AGM), 5.00%, 8/15/30	10,000	10,582,400

New Hampshire — 0.7%
New Hampshire Health & Education Facilities Authority, Refunding RB, Dartmouth College, 5.25%, 6/01/39	2,009	2,208,427

New York — 4.7%
New York City Municipal Water Finance Authority, RB:
Series DD, 5.00%, 6/15/37	6,299	6,679,610
Series FF-2, 5.50%, 6/15/40	1,575	1,777,297
New York State Dormitory Authority, ERB, Series F, 5.00%, 3/15/35	5,790	6,048,016

		14,504,923

North Carolina — 2.1%
North Carolina Capital Facilities Finance Agency, Refunding RB, Duke University Project, Series A, 5.00%, 10/01/41	6,239	6,555,042


Municipal Bonds Transferred to Tender Option Bond Trusts (e)	Par (000)		Value

Ohio — 5.7%
Ohio Higher Educational Facility Commission, Refunding RB, Hospital, Cleveland Clinic Health, Series A, 5.25%, 1/01/33	$	2,400	$	2,536,248
State of Ohio, Refunding RB, Cleveland Clinic Health, Series A, 5.50%, 1/01/39		13,840		14,904,157

				17,440,405

South Carolina — 1.8%
South Carolina State Public Service Authority, RB, Santee Cooper, Series A, 5.50%, 1/01/38		4,995		5,545,699

Texas — 6.3%
Harris County Health Facilities Development Corp., Refunding RB, School Health Care System, Series B, 5.75%, 7/01/27 (d)		10,000		12,422,100
Texas Department of Housing & Community Affairs, MRB, Series B, AMT (Ginnie Mae), 5.25%, 9/01/32		3,901		4,002,574
Texas State University Systems, Refunding RB (AGM), 5.00%, 3/15/30		2,743		2,869,474

				19,294,148

Washington — 5.7%
Central Puget Sound Regional Transit Authority, RB, Series A:
5.00%, 11/01/36		4,000		4,194,940
(AGM), 5.00%, 11/01/32		7,693		8,116,214
Central Puget Sound Regional Transportation Authority, Washington, RB, Series A, 5.00%, 11/01/34		5,000		5,243,675

				17,554,829

Wisconsin — 0.9%
Wisconsin Health & Educational Facilities Authority, Refunding RB, Froedtert & Community Health Inc., 5.25%, 4/01/39		2,499		2,629,571

Total Municipal Bonds Transferred to Tender Option Bond Trusts — 39.8%				122,163,527

Total Long-Term Investments (Cost — $464,877,306) — 160.4%				492,907,980



Short-Term Securities	Shares

FFI Institutional Tax-Exempt Fund, 0.13% (f)(g)		137,942		137,942

Total Short-Term Securities (Cost — $137,942) — 0.0%				137,942

*Total Investments (Cost — $465,015,248) — 160.4%**				493,045,922
Other Assets Less Liabilities — 5.4%				16,705,502
Liability for Trust Certificates, Including Interest Expense and Fees Payable — (20.3)%				(62,281,805	)
Preferred Shares, at Redemption Value — (45.5)%				(140,016,058	)

Net Assets Applicable to Common Shares — 100.0%			$	307,453,561


*	The cost and unrealized appreciation (depreciation) of investments as of October 31, 2010, as computed for federal income tax purposes, were as follows:


Aggregate cost	$	402,599,350

Gross unrealized appreciation	$	35,010,761
Gross unrealized depreciation		(6,794,102	)

Net unrealized appreciation	$	28,216,659


(a)	Represents a zero-coupon bond. Rate shown reflects the current yield as of report date.

(b)	Issuer filed for bankruptcy and/or is in default of interest payments.

(c)	Non-income producing security.

(d)	Security is collateralized by Municipal or US Treasury obligations.


See Notes to Financial Statements.

50	SEMI-ANNUAL REPORT	OCTOBER 31, 2010




Schedule of Investments (concluded)	BlackRock MuniVest Fund II, Inc. (MVT)


(e)	Securities represent bonds transferred to a tender option bond trust in exchange for which the Fund acquired residual interest certificates. These securities serve as collateral in a financing transaction. See Note 1 of the Notes to Financial Statements for details of municipal bonds transferred to tender option bond trusts.

(f)	Investments in companies considered to be an affiliate of the Fund during the period, for purposes of Section 2(a)(3) of the Investment Company Act of 1940, as amended, were as follows:



Affiliate	Shares Held at April 30, 2010		Net Activity			Shares Held at October 31, 2010		Income

FFI Institutional Tax-Exempt Fund		552,231		(414,289	)		137,942	$	2,911


(g)	Represents the current yield as of report date.

•	Fair Value Measurements — Various inputs are used in determining the fair value of investments, which are as follows:


	•	Level 1 — price quotations in active markets/exchanges for identical assets and liabilities

	•	Level 2 — other observable inputs (including, but not limited to: quoted prices for similar assets or liabilities in markets that are active, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the assets or liabilities (such as interest rates, yield curves, volatilities, prepayment speeds, loss severities, credit risks and default rates) or other market-corroborated inputs)

	•	Level 3 — unobservable inputs based on the best information available in the circumstances, to the extent observable inputs are not available (including the Fund’s own assumptions used in determining the fair value of investments)

The inputs or methodologies used for valuing securities are not necessarily an indication of the risk associated with investing in those securities. For information about the Fund’s policy regarding valuation of investments and other significant accounting policies, please refer to Note 1 of the Notes to Financial Statements.

The following table summarizes the inputs used as of October 31, 2010 in determining the fair valuation of the Fund’s investments:



Valuation Inputs	Level 1		Level 2		Level 3		Total

Assets:
Investments in Securities:
Long-Term Investments¹		—	$	492,907,980		—	$	492,907,980
Short-Term Securities	$	137,942		—		—		137,942

Total	$	137,942	$	492,907,980		—	$	493,045,922


	¹	See above Schedule of Investments for values in each state or political subdivision.


See Notes to Financial Statements.

SEMI-ANNUAL REPORT	OCTOBER 31, 2010	51

Statements of Assets and Liabilities


October 31, 2010 (Unaudited)	BlackRock Apex Municipal Fund, Inc. (APX)		BlackRock MuniAssets Fund, Inc. (MUA)		BlackRock MuniEnhanced Fund, Inc. (MEN)		BlackRock MuniHoldings Fund, Inc. (MHD)		BlackRock MuniHoldings Fund II, Inc. (MUH)		BlackRock MuniHoldings Quality Fund, Inc. (MUS)		BlackRock Muni Intermediate Duration Fund, Inc. (MUI)		BlackRock MuniVest Fund II, Inc. (MVT)

Assets

Investments at value — unaffiliated¹	$	189,891,103	$	275,698,362	$	525,610,107	$	346,635,990	$	252,449,342	$	282,351,917	$	922,218,340	$	492,907,980
Investments at value — affiliated²		998,663		2,949,596		6,417,821		967,139		1,177,035		10,941,587		10,237,333		137,942
Investments sold receivable		3,724,610		5,320,066		—		3,695,387		2,579,619		147,750		755,168		10,264,699
Interest receivable		3,605,313		5,051,997		7,696,630		5,654,413		3,947,187		4,150,374		13,950,360		8,493,567
Income receivable — affiliated		—		—		—		—		—		—		370		—
Prepaid expenses		16,684		21,259		41,393		22,162		24,559		20,167		74,081		39,047
Other assets		—		—		—		—		—		—		101,700		—

Total assets		198,236,373		289,041,280		539,765,951		356,975,091		260,177,742		297,611,795		947,337,352		511,843,235


Accrued Liabilities

Bank overdraft		—		—		—		—		—		—		14,590		—
Income dividends payable — Common Shares		879,588		1,323,533		1,677,113		1,241,076		901,472		957,137		2,719,498		1,821,327
Investment advisory fees payable		108,974		134,400		228,723		166,590		121,455		167,230		439,869		217,236
Interest expense and fees payable		4,502		6,751		60,285		32,102		25,344		23,336		49,813		51,892
Other affiliates payable		1,208		1,756		3,308		2,180		1,592		1,836		5,744		3,138
Officer’s and Directors’ fees payable		352		2,937		821		560		402		802		108,972		3,486
Investments purchased payable		—		—		1,631,643		—		—		—		5,340,307		—
Other accrued expenses payable		26,292		20,842		37,112		22,387		22,208		27,855		49,736		46,624

Total accrued liabilities		1,020,916		1,490,219		3,639,005		1,464,895		1,072,473		1,178,196		8,728,529		2,143,703


Other Liabilities

Trust certificates³		7,285,446		10,755,646		61,582,907		43,487,622		33,617,184		31,815,414		66,608,812		62,229,913

Total Liabilities		8,306,362		12,245,865		65,221,912		44,952,517		34,689,657		32,993,610		75,337,341		64,373,616


Preferred Shares at Redemption Value

$25,000 per share liquidation preference, plus unpaid dividends^4,5		—		—		142,601,192		83,705,999		55,054,000		87,004,682		287,239,117		140,016,058
Net Assets Applicable to Common Shareholders	$	189,930,011	$	276,795,415	$	331,942,847	$	228,316,575	$	170,434,085	$	177,613,503	$	584,760,894	$	307,453,561


¹Investments at cost — unaffiliated	$	186,374,178	$	270,850,753	$	505,115,498	$	332,204,086	$	240,530,777	$	270,162,093	$	883,491,937	$	464,877,306

²Investments at cost — affiliated	$	998,663	$	2,949,596	$	6,417,821	$	967,139	$	1,177,035	$	10,941,587	$	10,237,333	$	137,942

³Represents short-term floating rate certificates issued by tender option bond trusts.
⁴Preferred Shares outstanding:
Par value $0.025 per share		—		—		4,575		—		—		—		—		—

Par value $0.05 per share		—		—		—		—		—		—		—		4,320

Par value $0.10 per share		—		—		1,128		3,348		2,202		3,480		11,487		1,280

⁵Preferred Shares authorized		—		—		7,480		5,000		3,480		5,360		12,800		7,000


See Notes to Financial Statements.

52	SEMI-ANNUAL REPORT	OCTOBER 31, 2010

Statements of Assets and Liabilities (concluded)


October 31, 2010 (Unaudited)	BlackRock Apex Municipal Fund, Inc. (APX)			BlackRock MuniAssets Fund, Inc. (MUA)			BlackRock MuniEnhanced Fund, Inc. (MEN)			BlackRock MuniHoldings Fund, Inc. (MHD)		BlackRock MuniHoldings Fund II, Inc. (MUH)		BlackRock MuniHoldings Quality Fund, Inc. (MUS)			BlackRock Muni Intermediate Duration Fund, Inc. (MUI)			BlackRock MuniVest Fund II, Inc. (MVT)

Net Assets Applicable to Common Shareholders Consist of

Paid-in capital^6,7	$	194,551,693		$	296,473,229		$	315,005,419		$	207,692,862	$	153,941,127	$	174,213,484		$	540,501,506		$	281,315,446
Undistributed net investment income		1,676,187			1,081,133			5,633,582			4,159,425		3,535,638		3,306,259			10,017,068			5,667,271
Accumulated net realized gain (loss)		(9,814,794	)		(25,606,556	)		(9,190,763	)		2,032,384		1,038,755		(12,096,064	)		(4,484,083	)		(7,559,830	)
Net unrealized appreciation/depreciation		3,516,925			4,847,609			20,494,609			14,431,904		11,918,565		12,189,824			38,726,403			28,030,674

Net Assets Applicable to Common Shareholders	$	189,930,011		$	276,795,415		$	331,942,847		$	228,316,575	$	170,434,085	$	177,613,503		$	584,760,894		$	307,453,561


Net Asset Value Applicable to Common Shareholders

Net asset value per share	$	9.50		$	13.07		$	11.29		$	16.37	$	15.22	$	13.73		$	15.37		$	14.94


⁶Common shares outstanding, $0.10 par value		19,990,638			21,176,532			29,409,600			13,944,672		11,198,414		12,934,276			38,034,934			20,579,962

⁷Common Shares authorized		150 Million			200 Million			200 Million			200 Million		200 Million		200 Million			200 Million			200 Million


See Notes to Financial Statements.

	SEMI-ANNUAL REPORT	OCTOBER 31, 2010	53

Statements of Operations


Six Months Ended October 31, 2010 (Unaudited)	BlackRock Apex Municipal Fund, Inc. (APX)			BlackRock MuniAssets Fund, Inc. (MUA)			BlackRock MuniEnhanced Fund, Inc. (MEN)			BlackRock MuniHoldings Fund, Inc. (MHD)			BlackRock MuniHoldings Fund II, Inc. (MUH)			BlackRock MuniHoldings Quality Fund, Inc. (MUS)			BlackRock Muni Intermediate Duration Fund, Inc. (MUI)			BlackRock MuniVest Fund II, Inc. (MVT)

Investment Income

Interest	$	6,318,030		$	9,143,900		$	12,533,793		$	9,230,707		$	6,725,117		$	6,825,857		$	21,940,486		$	13,546,959
Income — affiliated		993			1,248			5,978			2,341			916			8,749			10,882			2,911

Total income		6,319,023			9,145,148			12,539,771			9,233,048			6,726,033			6,834,606			21,951,368			13,549,870


Expenses

Investment advisory		628,621			773,922			1,325,666			961,350			700,801			806,899			2,538,466			1,256,562
Professional		23,765			25,630			41,935			37,776			30,594			30,838			44,214			39,420
Accounting services		18,217			26,767			43,503			30,300			24,435			27,119			70,189			44,775
Transfer agent		16,504			19,156			37,013			21,063			17,705			18,023			45,823			30,535
Officer and Directors		9,602			13,543			17,818			12,332			9,459			9,894			31,460			15,394
Custodian		9,067			9,461			13,773			10,070			7,852			8,508			22,211			13,234
Printing		5,873			9,513			14,033			9,444			7,067			8,171			26,476			14,205
Registration		4,530			4,844			4,986			4,643			4,780			4,789			6,819			8,466
Commissions for Preferred Shares		—			—			104,445			62,959			42,827			66,233			226,005			110,491
Miscellaneous		22,890			27,385			42,955			34,892			33,712			36,489			63,753			50,295

Total expenses excluding interest expense and fees		739,069			910,221			1,646,127			1,184,829			879,232			1,016,963			3,075,416			1,583,377
Interest expense and fees¹		33,431			49,336			229,795			163,925			125,483			119,808			244,366			228,374

Total expenses		772,500			959,557			1,875,922			1,348,754			1,004,715			1,136,771			3,319,782			1,811,751
Less fees waived by advisor		(238	)		(294	)		(1,423	)		(540	)		(200	)		(69,119	)		(113,923	)		(686	)

Total expenses after fees waived		772,262			959,263			1,874,499			1,348,214			1,004,515			1,067,652			3,205,859			1,811,065

Net investment income		5,546,761			8,185,885			10,665,272			7,884,834			5,721,518			5,766,954			18,745,509			11,738,805


Realized and Unrealized Gain (Loss)

Net realized gain (loss) from:
Investments		(355,779	)		(441,834	)		(92,354	)		847,374			1,002,944			776,686			3,286,442			482,492
Financial futures contracts		4,454			6,998			(170,354	)		5,726			4,453			8,271			—			(213,064	)

		(351,325	)		(434,836	)		(262,708	)		853,100			1,007,397			784,957			3,286,442			269,428

Net change in unrealized appreciation/depreciation on investments		6,298,829			9,463,427			11,506,919			7,486,514			5,125,745			4,446,607			19,403,375			10,073,981

Total realized and unrealized gain		5,947,504			9,028,591			11,244,211			8,339,614			6,133,142			5,231,564			22,689,817			10,343,409


Dividends to Preferred Shareholders From

Net investment income		—			—			(449,806	)		(229,485	)		(116,212	)		(182,778	)		(2,124,876	)		(463,494	)

Net Increase in Net Assets Applicable to Common Shareholders Resulting from Operations	$	11,494,265		$	17,214,476		$	21,459,677		$	15,994,963		$	11,738,448		$	10,815,740		$	39,310,450		$	21,618,720

¹Related to tender option bond trusts.


See Notes to Financial Statements.

54	SEMI-ANNUAL REPORT	OCTOBER 31, 2010

Statements of Changes in Net Assets


	BlackRock Apex Municipal Fund, Inc. (APX)						BlackRock MuniAssets Fund, Inc. (MUA)						BlackRock MuniEnhanced Fund, Inc. (MEN)

Increase (Decrease) in Net Assets Applicable to Common Shareholders:	Six Months Ended October 31, 2010 (Unaudited)			Year Ended April 30, 2010			Six Months Ended October 31, 2010 (Unaudited)			Year Ended April 30, 2010			Six Months Ended October 31, 2010 (Unaudited)			Year Ended April 30, 2010

Operations

Net investment income	$	5,546,761		$	11,440,748		$	8,185,885		$	16,818,625		$	10,665,272		$	22,103,824
Net realized loss		(351,325	)		(618,845	)		(434,836	)		(505,303	)		(262,708	)		(2,514,799	)
Net change in unrealized appreciation/depreciation		6,298,829			30,737,544			9,463,427			43,885,403			11,506,919			33,008,361
Dividends to Preferred Shareholders from net investment income		—			—			—			—			(449,806	)		(972,174	)

Net increase in net assets applicable to Common Shareholders resulting from operations		11,494,265			41,559,447			17,214,476			60,198,725			21,459,677			51,625,212


Dividends to Shareholders From

Net investment income		(5,275,468	)		(11,310,084	)		(7,930,553	)		(17,164,842	)		(10,049,090	)		(18,620,500	)


Capital Share Transactions

Reinvestment of common dividends		89,094			412,211			680,252			1,897,902			449,066			—


Net Assets Applicable to Common Shareholders

Total increase in net assets applicable to Common Shareholders		6,307,891			30,661,574			9,964,175			44,931,785			11,859,653			33,004,712
Beginning of period		183,622,120			152,960,546			266,831,240			221,899,455			320,083,194			287,078,482

End of period	$	189,930,011		$	183,622,120		$	276,795,415		$	266,831,240		$	331,942,847		$	320,083,194

Undistributed net investment income	$	1,676,187		$	1,404,894		$	1,081,133		$	825,801		$	5,633,582		$	5,467,206


See Notes to Financial Statements.

	SEMI-ANNUAL REPORT	OCTOBER 31, 2010	55

Statements of Changes in Net Assets (continued)


	BlackRock MuniHoldings Fund, Inc. (MHD)						BlackRock MuniHoldings Fund II, Inc. (MUH)						BlackRock MuniHoldings Quality Fund, Inc. (MUS)

Increase (Decrease) in Net Assets Applicable to Common Shareholders:	Six Months Ended October 31, 2010 (Unaudited)			Year Ended April 30, 2010			Six Months Ended October 31, 2010 (Unaudited)			Year Ended April 30, 2010			Six Months Ended October 31, 2010 (Unaudited)			Year Ended April 30, 2010

Operations

Net investment income	$	7,884,834		$	15,784,697		$	5,721,518		$	11,430,386		$	5,766,954		$	12,056,685
Net realized gain (loss)		853,100			983,601			1,007,397			848,274			784,957			(267,028	)
Net change in unrealized appreciation/depreciation		7,486,514			32,294,227			5,125,745			22,414,189			4,446,607			12,924,699
Dividends and distributions to Preferred Shareholders from:
Net investment income		(229,485	)		(478,200	)		(116,212	)		(252,975	)		(182,778	)		(395,183	)
Net realized gain		—			(21,023	)		—			—			—			—

Net increase in net assets applicable to Common Shareholders
resulting from operations		15,994,963			48,563,302			11,738,448			34,439,874			10,815,740			24,319,173


Dividends and Distributions to Common Shareholders From

Net investment income		(7,270,591	)		(13,840,853	)		(5,402,986	)		(10,095,056	)		(5,735,412	)		(10,496,334	)
Net realized gain		—			(323,547	)		—			—			—			—

Decrease in net assets resulting from dividends and distributions to Common Shareholders		(7,270,591	)		(14,164,400	)		(5,402,986	)		(10,095,056	)		(5,735,412	)		(10,496,334	)


Capital Share Transactions

Reinvestment of common dividends and distributions		458,801			49,523			376,800			—			555,971			93,344


Net Assets Applicable to Common Shareholders

Total increase in net assets applicable to Common Shareholders		9,183,173			34,448,425			6,712,262			24,344,818			5,636,299			13,916,183
Beginning of period		219,133,402			184,684,977			163,721,823			139,377,005			171,977,204			158,061,021

End of period	$	228,316,575		$	219,133,402		$	170,434,085		$	163,721,823		$	177,613,503		$	171,977,204

Undistributed net investment income	$	4,159,425		$	3,774,667		$	3,535,638		$	3,333,318		$	3,306,259		$	3,457,495


See Notes to Financial Statements.

56	SEMI-ANNUAL REPORT	OCTOBER 31, 2010

Statements of Changes in Net Assets (concluded)


	BlackRock Muni Intermediate Fund, Inc. (MUI)						BlackRock MuniVest Fund II, Inc. (MVT)

Increase (Decrease) in Net Assets Applicable to Common Shareholders:	Six Months Ended October 31, 2010 (Unaudited)			Year Ended April 30, 2010			Six Months Ended October 31, 2010 (Unaudited)			Year Ended April 30, 2010

Operations

Net investment income	$	18,745,509		$	38,883,136		$	11,738,805		$	24,074,947
Net realized gain		3,286,442			735,933			269,428			1,639,858
Net change in unrealized appreciation/depreciation		19,403,375			59,229,788			10,073,981			45,862,257
Dividends to Preferred Shareholders from net investment income		(2,124,876	)		(4,345,317	)		(463,494	)		(992,540	)

Net increase in net assets applicable to Common Shareholders resulting from operations		39,310,450			94,503,540			21,618,720			70,584,522



Dividends to Common Shareholders From

Net investment income		(15,689,410	)		(29,610,196	)		(10,706,844	)		(20,330,657	)



Capital Share Transactions

Reinvestment of common dividends		—			—			1,076,345			1,628,414



Net Assets Applicable to Common Shareholders

Total increase in net assets applicable to Common Shareholders		23,621,040			64,893,344			11,988,221			51,882,279
Beginning of period		561,139,854			496,246,510			295,465,340			243,583,061

End of period	$	584,760,894		$	561,139,854		$	307,453,561		$	295,465,340

Undistributed net investment income	$	10,017,068		$	9,085,845		$	5,667,271		$	5,098,804


See Notes to Financial Statements.

SEMI-ANNUAL REPORT	OCTOBER 31, 2010	57

Statements of Cash Flows


Six Months Ended October 31, 2010 (Unaudited)	BlackRock MuniEnhanced Fund, Inc. (MEN)			BlackRock MuniHoldings Fund, Inc. (MHD)			BlackRock MuniHoldings Fund II, Inc. (MUH)			BlackRock MuniHoldings Quality Fund, Inc. (MUS)			BlackRock MuniVest Fund II, Inc. (MVT)

Cash Provided by Operating Activities

Net increase in net assets resulting from operations, excluding dividends to Preferred Shareholders	$	21,909,483		$	16,224,448		$	11,854,660		$	10,998,518		$	22,082,214
Adjustments to reconcile net increase in net assets resulting from operations to net cash provided by operating activities:
(Increase) decrease in interest receivable		(300,587	)		199,497			118,518			75,612			292,173
Increase in investment advisory fees payable		1,480			2,218			1,618			49,730			2,495
Increase (decrease) in interest expense and fees payable		(9,643	)		(24	)		(430	)		(2,994	)		1,938
Increase in other affiliates payable		77			74			59			41			95
Decrease in accrued expenses payable		(28,648	)		(34,183	)		(25,173	)		(23,883	)		(32,591	)
Increase in Officer’s and Directors’ payable		88			81			50			207			2,479
Net realized and unrealized gain on investments		(11,407,502	)		(8,333,756	)		(6,131,296	)		(5,222,694	)		(10,556,473	)
Amortization of premium and accretion and discount on investments		(79,221	)		71,261			(159,909	)		298,551			55,116
Proceeds from sales of long-term investments		22,265,952			28,689,043			23,432,146			29,147,224			41,131,043
Purchases of long-term investments		(25,292,308	)		(34,407,970	)		(24,977,608	)		(27,532,708	)		(46,979,258	)
Net proceeds from sales (purchases) of short-term securities		789,602			2,387,515			(569,300	)		(2,287,921	)		414,289

Cash provided by operating activities	$	7,848,773		$	4,798,204		$	3,543,335		$	5,499,683		$	6,413,520



Cash Used for Financing Activities

Cash receipts from trust certificates		3,728,311			3,779,156			2,747,390			1,060,000			8,859,565
Cash payments from trust certificates.		(1,540,000	)		(1,580,000	)		(1,150,000	)		(1,200,000	)		(5,225,167	)
Cash dividends paid to Common Shareholders		(9,596,994	)		(6,767,508	)		(5,024,163	)		(5,176,408	)		(9,572,729	)
Cash dividends paid to Preferred Shareholders		(440,090	)		(229,852	)		(116,562	)		(183,275	)		(475,189	)

Cash used for financing activities		(7,848,773	)		(4,798,204	)		(3,543,335	)		(5,499,683	)		(6,413,520	)



Cash

Net increase in cash		—			—			—			—			—
Cash at beginning of period		—			—			—			—			—

Cash at end of period		—			—			—			—			—



Cash Flow Information

Cash paid during the period for interest	$	239,438		$	163,949		$	125,913		$	122,802		$	226,436



Noncash Financing Activities

Capital shares issued in reinvestment of dividends paid to Common Shareholders	$	449,066		$	458,801		$	376,800		$	555,971		$	1,076,345


	A Statement of Cash Flows is presented when a Fund has a significant amount of borrowing during the period, based on the average borrowing outstanding in relation to average total assets.


See Notes to Financial Statements.

58	SEMI-ANNUAL REPORT	OCTOBER 31, 2010




Financial Highlights	BlackRock Apex Municipal Fund, Inc. (APX)


	Six Months Ended October 31, 2010 (Unaudited)			Year Ended April 30, 2010			Period July 1, 2008 to April 30, 2009

										Year Ended June 30,

										2008			2007			2006			2005

Per Share Operating Performance

Net asset value, beginning of period	$	9.19		$	7.67		$	9.14		$	9.95		$	9.90		$	9.82		$	9.13

Net investment income¹		0.28			0.57			0.48			0.54			0.58			0.58			0.58
Net realized and unrealized gain (loss)		0.29			1.51			(1.48	)		(0.77	)		0.06			0.08			0.69

Net increase (decrease) from investment operations		0.57			2.08			(1.00	)		(0.23	)		0.64			0.66			1.27

Dividends from net investment income		(0.26	)		(0.56	)		(0.47	)		(0.58	)		(0.59	)		(0.58	)		(0.58	)

Net asset value, end of period	$	9.50		$	9.19		$	7.67		$	9.14		$	9.95		$	9.90		$	9.82

Market price, end of period	$	9.31		$	8.87		$	7.72		$	9.28		$	10.23		$	10.25		$	9.48



Total Investment Return²

Based on net asset value		6.36	%³		27.99	%		(10.81	)%³		(2.40	)%		6.48	%		7.00	%		14.67	%

Based on market price		7.99	%³		22.73	%		(11.58	)%³		(3.61	)%		5.73	%		14.76	%		22.36	%



Ratios to Average Net Assets

Total expenses		0.83	%⁴		0.84	%		0.91	%⁴		0.85	%		0.80	%		0.81	%		0.80	%

Total expenses after fees waived		0.83	%⁴		0.84	%		0.91	%⁴		0.84	%		0.80	%		0.80	%		0.80	%

Total expenses after fees waived and excluding interest expense and fees⁵		0.79	%⁴		0.80	%		0.84	%⁴		0.80	%		0.80	%		0.80	%		0.80	%

Net investment income		5.96	%⁴		6.64	%		7.16	%⁴		5.64	%		5.75	%		5.83	%		6.11	%



Supplemental Data

Net assets, end of period (000)	$	189,930		$	183,622		$	152,961		$	181,656		$	196,826		$	194,646		$	192,475

Portfolio turnover		9	%		46	%		20	%		25	%		22	%		19	%		22	%


	¹	Based on average shares outstanding.

	²	Total investment returns based on market price, which can be significantly greater or lesser than the net asset value, may result in substantially different returns. Where applicable, total investment returns exclude the effects of any sales charges and include the reinvestment of dividends and distributions.

	³	Aggregate total investment return.

	⁴	Annualized.

	⁵	Interest expense and fees relate to tender option bond trusts. See Note 1 of the Notes to Financial Statements for details of municipal bonds transferred to tender option bond trusts.


See Notes to Financial Statements.

SEMI-ANNUAL REPORT	OCTOBER 31, 2010	59




Financial Highlights	BlackRock MuniAssets Fund, Inc. (MUA)


	Six Months Ended October 31, 2010 (Unaudited)			Year Ended April 30, 2010			Period July 1, 2008 to April 30, 2009

										Year Ended May 30,

										2008			2007			2006			2005

Per Share Operating Performance

Net asset value, beginning of period	$	12.63		$	10.59		$	12.79		$	13.87		$	13.65		$	13.40		$	12.36

Net investment income¹		0.40			0.80			0.72			0.78			0.82			0.81			0.81
Net realized and unrealized gain (loss)		0.42			2.06			(2.18	)		(1.04	)		0.24			0.27			1.04

Net increase (decrease) from investment operations		0.82			2.86			(1.46	)		(0.26	)		1.06			1.08			1.85
Dividends and distributions from:
Net investment income		(0.38	)		(0.82	)		(0.74	)		(0.82	)		(0.84	)		(0.83	)		(0.81	)
Net realized gain		—			—			—			(0.00	)²		—			—			—

Total dividends and distributions		(0.38	)		(0.82	)		(0.74	)		(0.82	)		(0.84	)		(0.83	)		(0.81	)

Net asset value, end of period	$	13.07		$	12.63		$	10.59		$	12.79		$	13.87		$	13.65		$	13.40

Market price, end of period	$	12.99		$	12.65		$	10.91		$	13.35		$	15.29		$	14.13		$	13.27



Total Investment Return³

Based on net asset value		6.54	%⁴		27.72	%		(11.29	)%⁴		(1.90	)%		7.72	%		8.31	%		15.65	%

Based on market price		5.72	%⁴		24.17	%		(12.45	)%⁴		(7.12	)%		14.71	%		13.22	%		24.39	%



Ratios to Average Net Assets

Total expenses		0.71	%⁵		0.72	%		0.77	%⁵		0.70	%		0.68	%		0.68	%		0.67	%

Total expenses after fees waived and paid indirectly		0.71	%⁵		0.72	%		0.76	%⁵		0.69	%		0.68	%		0.68	%		0.67	%

Total expenses after fees waived and paid indirectly and excluding interest expense and fees⁶		0.67	%⁵		0.67	%		0.70	%⁵		0.66	%		0.68	%		0.68	%		0.67	%

Net investment income		6.05	%⁵		6.72	%		7.13	%⁵		5.81	%		5.91	%		5.97	%		6.30	%



Supplemental Data

Net assets, end of period (000)	$	276,795		$	266,831		$	221,899		$	266,913		$	287,367		$	280,793		$	273,382

Portfolio turnover		9	%		44	%		23	%		23	%		25	%		17	%		20	%


	¹	Based on average shares outstanding.

	²	Amount is less than $(0.01) per share.

	³	Total investment returns based on market price, which can be significantly greater or lesser than the net asset value, may result in substantially different returns. Where applicable, total investment returns exclude the effects of any sales charges and include the reinvestment of dividends and distributions.

	⁴	Aggregate total investment return.

	⁵	Annualized.

	⁶	Interest expense and fees relate to tender option bond trusts. See Note 1 of the Notes to Financial Statements for details of municipal bonds transferred to tender option bond trusts.


See Notes to Financial Statements.

60	SEMI-ANNUAL REPORT	OCTOBER 31, 2010




Financial Highlights	BlackRock MuniEnhanced Fund, Inc. (MEN)


	Six Months Ended October 31, 2010 (Unaudited)			Year Ended April 30, 2010			Period July 1, 2009 to April 30, 2009

										Year Ended January 31,

										2009			2008			2007			2006

Per Share Operating Performance

Net asset value, beginning of period	$	10.90		$	9.77		$	9.15		$	11.16		$	11.55		$	11.52		$	11.85

Net investment income¹		0.36			0.75			0.18			0.72			0.78			0.76			0.77
Net realized and unrealized gain (loss)		0.39			1.04			0.58			(2.02	)		(0.41	)		0.06			(0.22	)
Dividends to Preferred Shareholders from net investment income		(0.02	)		(0.03	)		(0.01	)		(0.19	)		(0.24	)		(0.22	)		(0.16	)

Net increase (decrease) from investment operations		0.73			1.76			0.75			(1.49	)		0.13			0.60			0.39

Dividends to Common Shareholders from net investment income		(0.34	)		(0.63	)		(0.13	)		(0.52	)		(0.52	)		(0.57	)		(0.72	)

Net asset value, end of period	$	11.29		$	10.90		$	9.77		$	9.15		$	11.16		$	11.55		$	11.52

Market price, end of period	$	11.26		$	10.81		$	8.88		$	8.31		$	10.66		$	10.77		$	11.03



Total Investment Return²

Based on net asset value		6.81	%³		18.76	%		8.40	%³		(13.19	)%		1.44	%		5.66	%		3.63	%

Based on market price		7.41	%³		29.59	%		8.48	%³		(17.46	)%		3.92	%		2.90	%		7.58	%



Ratios to Average Net Assets Applicable to Common Shareholders

Total expenses⁴		1.15	%⁵		1.20	%		1.46	%⁵		1.77	%		1.72	%		1.69	%		1.51	%

Total expenses after fees waived and paid indirectly⁴		1.15	%⁵		1.20	%		1.45	%⁵		1.76	%		1.72	%		1.69	%		1.51	%

Total expenses after fees waived and paid indirectly and excluding interest expense and fees^4,6		1.01	%⁵		1.04	%		1.22	%⁵		1.18	%		1.08	%		1.08	%		1.07	%

Net investment income⁴		6.53	%⁵		7.17	%		7.72	%⁵		7.43	%		6.85	%		6.57	%		6.63	%

Dividends to Preferred Shareholders		0.28	%⁵		0.32	%		0.56	%⁵		1.92	%		2.08	%		1.88	%		1.34	%

Net investment income to Common Shareholders		6.25	%⁵		6.85	%		7.16	%⁵		5.51	%		4.77	%		4.69	%		5.29	%



Supplemental Data

Net assets applicable to Common Shareholders, end of period (000)	$	331,943		$	320,083		$	287,078		$	268,689		$	327,711		$	339,237		$	338,450

Preferred Shares outstanding at $25,000 liquidation preference,end of period (000)	$	142,575		$	142,575		$	158,850		$	158,850		$	187,000		$	187,000		$	187,000

Portfolio turnover		4	%		23	%		6	%		24	%		18	%		31	%		22	%

Asset coverage per Preferred Share at $25,000 liquidation preference, end of period	$	83,210		$	81,128		$	70,185		$	67,294		$	68,834		$	70,373		$	70,262


	¹	Based on average shares outstanding.

	²	Total investment returns based on market price, which can be significantly greater or lesser than the net asset value, may result in substantially different returns. Where applicable, total investment returns exclude the effects of any sales charges and include the reinvestment of dividends and distributions.

	³	Aggregate total investment return.

	⁴	Do not reflect the effect of dividends to Preferred Shareholders.

	⁵	Annualized.

	⁶	Interest expense and fees relate to tender option bond trusts. See Note 1 of the Notes to Financial Statements for details of municipal bonds transferred to tender option bond trusts.


See Notes to Financial Statements.

SEMI-ANNUAL REPORT	OCTOBER 31, 2010	61




Financial Highlights	BlackRock MuniHoldings Fund, Inc. (MHD)


	Six Months Ended October 31, 2010 (Unaudited)

				Year Ended April 30,

				2010			2009			2008			2007			2006

Per Share Operating Performance

Net asset value, beginning of period	$	15.75		$	13.27		$	15.20		$	16.51		$	16.14		$	16.31

Net investment income¹		0.57			1.13			1.07			1.16			1.17			1.16
Net realized and unrealized gain (loss)		0.59			2.39			(1.94	)		(1.20	)		0.42			(0.00	)²
Dividends and distributions to Preferred Shareholders from:
Net investment income		(0.02	)		(0.03	)		(0.18	)		(0.31	)		(0.32	)		(0.23	)
Net realized gain		—			(0.00	)²		(0.01	)		(0.03	)		—			—

Net increase (decrease) from investment operations		1.14			3.49			(1.06	)		(0.38	)		1.27			0.93

Dividends and distributions to Common Shareholders from:
Net investment income		(0.52	)		(0.99	)		(0.85	)		(0.85	)		(0.90	)		(1.08	)
Net realized gain		—			(0.02	)		(0.02	)		(0.08	)		—			—

Total dividends and distributions to Common Shareholders		(0.52	)		(1.01	)		(0.87	)		(0.93	)		(0.90	)		(1.08	)

Capital charges with respect to issuance of Preferred Shares		—			—			—			—			—			(0.02	)

Net asset value, end of period	$	16.37		$	15.75		$	13.27		$	15.20		$	16.51		$	16.14

Market price, end of period	$	16.68		$	15.70		$	11.97		$	14.77		$	16.49		$	16.20



Total Investment Return³

Based on net asset value		7.36	%⁴		27.31	%		(6.24	)%		(2.08	)%		8.06	%		5.69	%

Based on market price		9.74	%⁴		40.68	%		(12.97	)%		(4.74	)%		7.52	%		7.34	%



Ratios to Average Net Assets Applicable to Common Shareholders

Total expenses⁵		1.21	%⁶		1.25	%		1.65	%		1.56	%		1.54	%		1.30	%

Total expenses after fees waived and paid indirectly⁵		1.21	%⁶		1.25	%		1.64	%		1.56	%		1.54	%		1.30	%

Total expenses after fees waived and paid indirectly and excluding interest expense and fees^5,7		1.06	%⁶		1.11	%		1.25	%		1.20	%		1.17	%		1.15	%

Net investment income⁵		7.07	%⁶		7.67	%		7.98	%		7.27	%		7.14	%		7.15	%

Dividends to Preferred Shareholders		0.20	%⁶		0.24	%		1.32	%		1.96	%		1.93	%		1.45	%

Net investment income to Common Shareholders		6.87	%⁶		7.43	%		6.66	%		5.31	%		5.20	%		5.70	%



Supplemental Data

Net assets applicable to Common Shareholders, end of period (000)	$	228,317		$	219,133		$	184,685		$	211,429		$	229,376		$	223,658

Preferred Shares outstanding at $25,000 liquidation preference, end of period (000)	$	83,700		$	83,700		$	91,925		$	125,000		$	125,000		$	125,000

Portfolio turnover		8	%		41	%		19	%		30	%		20	%		45	%

Asset coverage per Preferred Share at $25,000 liquidation preference, end of period	$	93,197		$	90,454		$	75,230		$	67,294		$	70,889		$	69,742


	¹	Based on average shares outstanding.

	²	Amount is less than $(0.01) per share.

	³	Total investment returns based on market price, which can be significantly greater or lesser than the net asset value, may result in substantially different returns. Where applicable, total investment returns exclude the effects of any sales charges and include the reinvestment of dividends and distributions.

	⁴	Aggregate total investment return.

	⁵	Do not reflect the effect of dividends to Preferred Shareholders.

	⁶	Annualized.

	⁷	Interest expense and fees relate to tender option bond trusts. See Note 1 of the Notes to Financial Statements for details of municipal bonds transferred to tender option bond trusts.


See Notes to Financial Statements.

62	SEMI-ANNUAL REPORT	OCTOBER 31, 2010




Financial Highlights	BlackRock MuniHoldings Fund II, Inc. (MUH)


	Six Months Ended October 31, 2010 (Unaudited)			Year Ended April 30, 2010			Period August 1, 2008 to April 30, 2009

										Year Ended July 31,

										2008			2007			2006			2005

Per Share Operating Performance

Net asset value, beginning of period	$	14.65		$	12.47		$	13.66		$	14.78		$	14.82		$	15.03		$	13.98

Net investment income¹		0.51			1.02			0.72			1.04			1.05			1.04			1.08
Net realized and unrealized gain (loss)		0.55			2.08			(1.22	)		(1.14	)		(0.05	)		(0.11	)		1.15
Dividends to Preferred Shareholders from net investment income		(0.01	)		(0.02	)		(0.10	)		(0.26	)		(0.27	)		(0.23	)		(0.14	)

Net increase (decrease) from investment operations		1.05			3.08			(0.60	)		(0.36	)		0.73			0.70			2.09

Dividends to Common Shareholders from net investment income		(0.48	)		(0.90	)		(0.59	)		(0.76	)		(0.77	)		(0.91	)		(1.04	)

Net asset value, end of period	$	15.22		$	14.65		$	12.47		$	13.66		$	14.78		$	14.82		$	15.03

Market price, end of period	$	15.30		$	14.68		$	11.33		$	13.01		$	13.99		$	14.12		$	15.25



Total Investment Return²

Based on net asset value		7.30	%³		25.71	%		(3.55	)%³		(2.30	)%		5.08	%		4.89	%		15.46	%

Based on market price		7.64	%³		38.64	%		(7.99	)%³		(1.69	)%		4.39	%		(1.50	)%		21.04	%



Ratios to Average Net Assets Applicable to Common Shareholders

Total expenses⁴		1.21	%⁵		1.25	%		1.60	%⁵		1.55	%		1.63	%		1.44	%		1.27	%

Total expenses after fees waived⁴		1.21	%⁵		1.25	%		1.60	%⁵		1.55	%		1.63	%		1.44	%		1.27	%

Total expenses after fees waived and excluding interest expense and fees^4,6		1.06	%⁵		1.10	%		1.22	%⁵		1.18	%		1.19	%		1.18	%		1.19	%

Net investment income⁴		6.87	%⁵		7.41	%		7.84	%⁵		7.07	%		6.97	%		7.04	%		7.38	%

Dividends to Preferred Shareholders		0.14	%⁵		0.16	%		1.07	%⁵		1.79	%		1.82	%		1.55	%		0.98	%

Net investment income to Common Shareholders		6.73	%⁵		7.25	%		6.77	%⁵		5.28	%		5.15	%		5.49	%		6.41	%



Supplemental Data

Net assets applicable to Common Shareholders, end of period (000)	$	170,434		$	163,722		$	139,377		$	152,633		$	165,185		$	165,565		$	167,588

Preferred Shares outstanding at $25,000 liquidation preference, end of period (000)	$	55,050		$	55,050		$	61,000		$	61,000		$	87,000		$	87,000		$	87,000

Portfolio turnover		8	%		41	%		19	%		28	%		15	%		49	%		38	%

Asset coverage per Preferred Share at $25,000 liquidation preference, end of period	$	102,401		$	99,353		$	81,123		$	87,562		$	72,478		$	72,555		$	73,163


	¹	Based on average shares outstanding.

	²	Total investment returns based on market price, which can be significantly greater or lesser than the net asset value, may result in substantially different returns. Where applicable, total investment returns exclude the effects of any sales charges and include the reinvestment of dividends and distributions.

	³	Aggregate total investment return.

	⁴	Do not reflect the effect of dividends to Preferred Shareholders.

	⁵	Annualized.

	⁶	Interest expense and fees relate to tender option bond trusts. See Note 1 of the Notes to Financial Statements for details of municipal bonds transferred to tender option bond trusts.


See Notes to Financial Statements.

SEMI-ANNUAL REPORT	OCTOBER 31, 2010	63




Financial Highlights	BlackRock MuniHoldings Quality Fund, Inc. (MUS)


	Six Months Ended October 31, 2010 (Unaudited)
				Year Ended April 30,

				2010			2009			2008			2007			2006

Per Share Operating Performance

Net asset value, beginning of period	$	13.34		$	12.27		$	13.31		$	14.10		$	13.80		$	14.44

Net investment income¹		0.44			0.94			0.93			1.05			0.93			0.97
Net realized and unrealized gain (loss)		0.40			0.97			(1.20	)		(0.87	)		0.36			(0.50	)
Dividends to Preferred Shareholders from net investment income		(0.01	)		(0.03	)		(0.19	)		(0.38	)		(0.36	)		(0.28	)

Net increase (decrease) from investment operations		0.83			1.88			(0.46	)		(0.20	)		0.93			0.19

Dividends to Common Shareholders from net investment income		(0.44	)		(0.81	)		(0.58	)		(0.59	)		(0.63	)		(0.83	)

Net asset value, end of period	$	13.73		$	13.34		$	12.27		$	13.31		$	14.10		$	13.80

Market price, end of period	$	14.09		$	13.40		$	10.87		$	11.97		$	13.13		$	13.10



Total Investment Return²

Based on net asset value		6.32	%³		16.05	%		(2.52	)%		(0.95	)%		7.29	%		1.46	%

Based on market price		8.62	%³		31.59	%		(3.97	)%		(4.34	)%		5.25	%		1.51	%



Ratios to Average Net Assets Applicable to Common Shareholders

Total expenses⁴		1.30	%⁵		1.36	%		1.88	%		1.64	%		1.67	%		1.65	%

Total expenses after fees waived⁴		1.22	%⁵		1.20	%		1.65	%		1.51	%		1.56	%		1.54	%

Total expenses after fees waived and excluding interest expense and fees^4,6		1.08	%⁵		1.04	%		1.17	%		1.27	%		1.23	%		1.24	%

Net investment income⁴		6.59	%⁵		7.23	%		7.69	%		7.72	%		6.62	%		6.87	%

Dividends to Preferred Shareholders		0.21	%⁵		0.24	%		1.61	%		2.80	%		2.59	%		2.00	%

Net investment income to Common Shareholders		6.38	%⁵		6.99	%		6.08	%		4.92	%		4.03	%		4.87	%



Supplemental Data

Net assets applicable to Common Shareholders, end of period (000)	$	177,613		$	171,977		$	158,061		$	171,510		$	181,640		$	177,790

Preferred Shares outstanding at $25,000 liquidation preference, end of period (000)	$	87,000		$	87,000		$	94,200		$	134,000		$	134,000		$	134,000

Portfolio turnover		10	%		22	%		35	%		57	%		29	%		59	%

Asset coverage per Preferred Share at $25,000 liquidation preference, end of period	$	76,052		$	74,420		$	66,951		$	57,008		$	58,903		$	58,181


	¹	Based on average shares outstanding.

	²	Total investment returns based on market price, which can be significantly greater or lesser than the net asset value, may result in substantially different returns. Where applicable, total investment returns exclude the effects of any sales charges and include the reinvestment of dividends and distributions.

	³	Aggregate total investment return.

	⁴	Do not reflect the effect of dividends to Preferred Shareholders.

	⁵	Annualized.

	⁶	Interest expense and fees relate to tender option bond trusts. See Note 1 of the Notes to Financial Statements for details of municipal bonds transferred to tender option bond trusts.


See Notes to Financial Statements.

64	SEMI-ANNUAL REPORT	OCTOBER 31, 2010




Financial Highlights	BlackRock Muni Intermediate Duration Fund, Inc. (MUI)


	Six Months Ended October 31, 2010 (Unaudited)						Period June 1, 2008 to April 30, 2009
				Year Ended April 30, 2010
										Year Ended May 31,

										2008			2007			2006			2005

Per Share Operating Performance

Net asset value, beginning of period	$	14.75		$	13.05		$	14.45		$	15.10		$	15.07		$	15.51		$	14.52

Net investment income¹		0.49			1.02			0.89			1.04			1.03			1.04			1.02
Net realized and unrealized gain (loss)		0.60			1.57			(1.42	)		(0.63	)		0.18			(0.15	)		1.15
Dividends and distributions to Preferred Shareholders from:
Net investment income		(0.06	)		(0.11	)		(0.23	)		(0.33	)		(0.28	)		(0.21	)		(0.11	)
Net realized gain		—			—			—			—			(0.04	)		(0.04	)		(0.02	)

Net increase (decrease) from investment operations		1.03			2.48			(0.76	)		0.08			0.89			0.64			2.04

Dividends and distributions to Common Shareholders from:

Net investment income		(0.41	)		(0.78	)		(0.64	)		(0.73	)		(0.74	)		(0.84	)		(0.86	)

Net realized gain		—			—			—			—			(0.12	)		(0.23	)		(0.19	)

Total dividends and distributions to Common Shareholders		(0.41	)		(0.78	)		(0.64	)		(0.73	)		(0.86	)		(1.07	)		(1.05	)

Capital charges with respect to issuance of Preferred Shares		—			—			—			—			—			(0.01	)		—

Net asset value, end of period	$	15.37		$	14.75		$	13.05		$	14.45		$	15.10		$	15.07		$	15.51

Market price, end of period	$	15.32		$	14.13		$	11.77		$	13.70		$	14.85		$	14.52		$	13.94



Total Investment Return²

Based on net asset value		7.11	%³		19.85	%		(4.56	)%³		0.86	%		6.14	%		4.71	%		15.36	%

Based on market price		11.45	%³		27.29	%		(9.21	)%³		(2.76	)%		8.34	%		12.25	%		14.93	%



Ratios to Average Net Assets Applicable to Common Shareholders

Total expenses⁴		1.16	%⁵		1.20	%		1.44	%⁵		1.30	%		1.31	%		1.24	%		1.07	%

Total expenses after fees waived and paid indirectly⁴		1.12	%⁵		1.10	%		1.25	%⁵		1.07	%		1.07	%		1.00	%		0.85	%

Total expenses after fees waived and paid indirectly and excluding interest expense and fees^4,6		1.03	%⁵		1.01	%		1.02	%⁵		0.90	%		0.87	%		0.87	%		0.84	%

Net investment income⁴		6.53	%⁵		7.22	%		7.46	%⁵		6.97	%		6.71	%		6.82	%		6.77	%

Dividends to Preferred Shareholders		0.74	%⁵		0.81	%		1.94	%⁵		2.23	%		1.80	%		1.36	%		0.74	%

Net investment income to Common Shareholders		5.79	%⁵		6.41	%		5.52	%⁵		4.74	%		4.91	%		5.46	%		6.03	%



Supplemental Data

Net assets applicable to Common Shareholders, end of period (000)	$	584,761		$	561,140		$	496,247		$	549,415		$	574,225		$	573,034		$	589,802

Preferred Shares outstanding at $25,000 liquidation preference, end of period (000)	$	287,175		$	287,175		$	287,175		$	320,000		$	320,000		$	320,000		$	285,000

Portfolio turnover		10	%		29	%		13	%		14	%		12	%		49	%		54	%

Asset coverage per Preferred Share at $25,000 liquidation preference, end of period	$	75,912		$	73,857		$	68,207		$	67,941		$	69,875		$	69,781		$	73,743


	¹	Based on average shares outstanding.

	²	Total investment returns based on market price, which can be significantly greater or lesser than the net asset value, may result in substantially different returns. Where applicable, total investment returns exclude the effects of any sales charges and include the reinvestment of dividends and distributions.

	³	Aggregate total investment return.

	⁴	Do not reflect the effect of dividends to Preferred Shareholders.

	⁵	Annualized.

	⁶	Interest expense and fees relate to tender option bond trusts. See Note 1 of the Notes to Financial Statements for details of municipal bonds transferred to tender option bond trusts.


See Notes to Financial Statements.

SEMI-ANNUAL REPORT	OCTOBER 31, 2010	65




Financial Highlights	BlackRock MuniVest Fund II, Inc. (MVT)


	Six Months Ended October 31, 2010 (Unaudited)			Year Ended April 30, 2010			Period November 1, 2008 to April 30, 2009

										Year Ended October 31,

										2008			2007			2006			2005

Per Share Operating Performance


Net asset value, beginning of period	$	14.41		$	11.95		$	10.95		$	14.49		$	15.35		$	15.13		$	15.21

Net investment income¹		0.57			1.18			0.53			1.12			1.16			1.16			1.19
Net realized and unrealized gain (loss)		0.50			2.32			0.95			(3.49	)		(0.84	)		0.35			0.04
Dividends to Preferred Shareholders from net investment income		(0.02	)		(0.05	)		(0.05	)		(0.32	)		(0.32	)		(0.29	)		(0.18	)

Net increase (decrease) from investment operations		1.05			3.45			1.43			(2.69	)		—			1.22			1.05

Dividends to Common Shareholders from net investment income		(0.52	)		(0.99	)		(0.43	)		(0.85	)		(0.86	)		(1.00	)		(1.10	)

Capital charge with respect to issuance of Preferred Shares		—			—			—			—			—			—			(0.03	)

Net asset value, end of period	$	14.94		$	14.41		$	11.95		$	10.95		$	14.49		$	15.35		$	15.13

Market price, end of period	$	15.38		$	14.94		$	11.65		$	9.75		$	13.91		$	16.29		$	15.40



Total Investment Return²

Based on net asset value		7.40	%³		29.75	%		13.71	%³		(19.33	)%		(0.02	)%		8.36	%		6.88	%

Based on market price		6.64	%³		37.99	%		24.49	%³		(25.18	)%		(9.56	)%		12.98	%		9.21	%



Ratios to Average Net Assets Applicable to Common Shareholders

Total expenses⁴		1.20	%⁵		1.25	%		1.51	%⁵		1.67	%		1.67	%		1.61	%		1.35	%

Total expenses after fees waived and excluding interest expense and fees^4,6		1.05	%⁵		1.10	%		1.26	%⁵		1.16	%		1.12	%		1.11	%		1.07	%

Net investment income⁴		7.80	%⁵		8.72	%		9.77	%⁵		8.03	%		7.74	%		7.70	%		7.76	%

Dividends to Preferred Shareholders		0.31	%⁵		0.36	%		0.95	%⁵		2.31	%		2.11	%		1.90	%		1.14	%

Net investment income to Common Shareholders		7.49	%⁵		8.36	%		8.82	%⁵		5.72	%		5.63	%		5.80	%		6.62	%



Supplemental Data

Net assets applicable to Common Shareholders, end of period (000)	$	307,454		$	295,465		$	243,583		$	223,210		$	293,836		$	309,975		$	303,701

Preferred Shares outstanding at $25,000 liquidation preference, end of period (000)	$	140,000		$	140,000		$	150,800		$	150,800		$	175,000		$	175,000		$	175,000

Portfolio turnover		8	%		30	%		9	%		49	%		43	%		60	%		64	%

Asset coverage per Preferred Share at $25,000 liquidation preference, end of period	$	79,905		$	77,767		$	65,388		$	62,019		$	67,004		$	69,307		$	68,389


	¹	Based on average shares outstanding.

	²	Total investment returns based on market price, which can be significantly greater or lesser than the net asset value, may result in substantially different returns. Where applicable, total investment returns exclude the effects of any sales charges and include the reinvestment of dividends and distributions.

	³	Aggregate total investment return.

	⁴	Do not reflect the effect of dividends to Preferred Shareholders.

	⁵	Annualized.

	⁶	Interest expense and fees relate to tender option bond trusts. See Note 1 of the Notes to Financial Statements for details of municipal bonds transferred to tender option bond trusts.


See Notes to Financial Statements.

66	SEMI-ANNUAL REPORT	OCTOBER 31, 2010

Notes to Financial Statements (Unaudited)

1. Organization and Significant Accounting Policies:

BlackRock Apex Municipal Fund, Inc. (“APX”), BlackRock MuniAssets Fund, Inc. (“MUA”), BlackRock MuniEnhanced Fund, Inc. (“MEN”), BlackRock MuniHoldings Fund, Inc. (“MHD”), BlackRock MuniHoldings Fund II, Inc. (“MUH”), BlackRock MuniHoldings Quality Fund, Inc. (formerly BlackRock MuniHoldings Insured Fund, Inc.) (“MUS”), BlackRock Muni Intermediate Duration Fund, Inc. (“MUI”) and BlackRock MuniVest Fund II, Inc. (“MVT”) (collectively, the “Funds”) are registered under the Investment Company Act of 1940, as amended (the “1940 Act”), as non-diversified, closed-end management investment companies. The Funds are organized as Maryland corporations. The Funds’ financial statements are prepared in conformity with accounting principles generally accepted in the United States of America (“US GAAP”), which may require management to make estimates and assumptions that affect the reported amounts and disclosures in the financial statements. Actual results could differ from those estimates. The Funds determine and make available for publication the net asset values of their Common Shares on a daily basis.

The following is a summary of significant accounting policies followed by the Funds:

Reorganizations: On September 2, 2010, the Board of Directors (the “Board”) of APX and MUA approved the reorganization of APX into MUA with MUA being the surviving Fund (the “Reorganization”) and changes to certain investment guidelines on APX and MUA. On December 17, 2010, shareholders of MUA approved the Reorganization and changes to certain investment policies of the Fund, and shareholders of APX approved changes to certain investment policies. APX’s shareholder vote with regard to the Reorganization was adjourned to allow additional time to further solicit votes. Subject to approval from APX shareholders and customary closing conditions being satisfied, it is currently expected the Reorganization would be completed in the first quarter of 2011.

Valuation: The Funds fair value their financial instruments at market value using independent dealers or pricing services under policies approved by the Board. Municipal investments (including commitments to purchase such investments on a “when-issued” basis) are valued on the basis of prices provided by dealers or pricing services. In determining the value of a particular investment, pricing services may use certain information with respect to transactions in such investments, quotations from dealers, pricing matrixes, market transactions in comparable investments and information with respect to various relationships between investments. Financial futures contracts traded on exchanges are valued at their last sale price. Short-term securities with remaining maturities of 60 days or less may be valued at amortized cost, which approximates fair value. Investments in open-end investment companies are valued at net asset value each business day.

In the event that application of these methods of valuation results in a price for an investment which is deemed not to be representative of the market value of such investment or is not available, the investment will be valued in accordance with a policy approved by the Board as reflecting fair value (“Fair Value Assets”). When determining the price for Fair Value Assets, the investment advisor and/or the sub-advisor seeks to determine the price that each Fund might reasonably expect to receive from the current sale of that asset in an arm’s-length transaction. Fair value determinations shall be based upon all available factors that the investment advisor and/or sub-advisor deems relevant. The pricing of all Fair Value Assets is subsequently reported to the Board or a committee thereof.

Forward Commitments and When-Issued Delayed Delivery Securities: The Funds may purchase securities on a when-issued basis and may purchase or sell securities on a forward commitment basis. Settlement of such transactions normally occurs within a month or more after the purchase or sale commitment is made. The Funds may purchase securities under such conditions with the intention of actually acquiring them, but may enter into a separate agreement to sell the securities before the settlement date. Since the value of securities purchased may fluctuate prior to settlement, the Funds may be required to pay more at settlement than the security is worth. In addition, the purchaser is not entitled to any of the interest earned prior to settlement. When purchasing a security on a delayed delivery basis, the Funds assume the rights and risks of ownership of the security, including the risk of price and yield fluctuations. In the event of default by the counter-party, the Funds’ maximum amount of loss is the unrealized appreciation of unsettled when-issued transactions, which is shown on the Schedules of Investments, if any.

Municipal Bonds Transferred to Tender Option Bond Trusts: The Funds leverage their assets through the use of tender option bond trusts (“TOBs”). A TOB is established by a third party sponsor forming a special purpose entity, into which one or more funds, or an agent on behalf of the funds, transfers municipal bonds. Other funds managed by the investment advisor may also contribute municipal bonds to a TOB into which a Fund has contributed bonds. A TOB typically issues two classes of beneficial interests: short-term floating rate certificates, which are sold to third party investors, and residual certificates (“TOB Residuals”), which are generally issued to the participating funds that made the transfer. The TOB Residuals held by a Fund include the right of a Fund (1) to cause the holders of a proportional share of the short-term floating rate certificates to tender their certificates at par, including during instances of a rise in short-term interest rates, and (2) to transfer, within seven days, a corresponding share of the municipal bonds from the TOB to a Fund. The TOB may also be terminated without the consent of a Fund upon the occurrence of certain events as defined in the TOB agreements. Such termination events may include the bankruptcy or default of the municipal bond, a substantial downgrade in credit quality of the municipal bond, the inability of the TOB to obtain quarterly or annual renewal of the liquidity support agreement, a substantial decline in market value of the municipal bond or the inability to remarket the short-term floating rate certificates to third party investors. During the six months ended October 31, 2010, no TOBs have been terminated without the consent of the Funds.

The cash received by the TOB from the sale of the short-term floating rate certificates, less transaction expenses, is paid to a Fund, which typically invests the cash in additional municipal bonds. Each Fund’s transfer of the municipal bonds to a TOB is accounted for as a secured borrowing, therefore the municipal bonds deposited into a TOB are presented in the Funds’ Schedules of Investments and the proceeds from the issuance of the short-term floating rate certificates are shown as trust certificates in the Statements of Assets and Liabilities.



SEMI-ANNUAL REPORT	OCTOBER 31, 2010	67

Notes to Financial Statements (continued)

Interest income, including amortization and accretion of premiums and discounts, from the underlying municipal bonds is recorded by the Funds on an accrual basis. Interest expense incurred on the secured borrowing and other expenses related to remarketing, administration and trustee services to a TOB are shown as interest expense and fees in the Statements of Operations. The short-term floating rate certificates have interest rates that generally reset weekly and their holders have the option to tender certificates to the TOB for redemption at par at each reset date. At October 31, 2010, the aggregate value of the underlying municipal bonds transferred to TOBs, the related liability for trust certificates and the range of interest rates on the liability for trust certificates were as follows:



	Underlying Municipal Bonds Transferred to TOBs		Liability for Trust Certificates		Range of Interest Rates

APX	$	15,157,401	$	7,285,446	0.28% – 0.40	%
MUA	$	22,367,905	$	10,755,646	0.28% – 0.40	%
MEN	$	121,863,362	$	61,582,907	0.27% – 0.38	%
MHD	$	85,164,892	$	43,487,622	0.27% – 0.33	%
MUH	$	65,323,483	$	33,617,184	0.27% – 0.33	%
MUS	$	61,834,800	$	31,815,414	0.28% – 0.43	%
MUI	$	125,892,787	$	66,608,812	0.28% – 0.38	%
MVT	$	122,163,527	$	62,229,913	0.27% – 0.37	%

For the six months ended October 31, 2010, the Funds’ average trust certificates outstanding and the daily weighted average interest rate, including fees, were as follows:



	Average Trust Certificates Outstanding		Daily Weighted Average Interest Rate

APX	$	7,285,446	0.92	%
MUA	$	10,755,646	0.92	%
MEN	$	61,445,281	0.75	%
MHD	$	43,269,861	0.76	%
MUH	$	33,455,917	0.75	%
MUS	$	31,820,909	0.76	%
MUI	$	62,348,264	0.79	%
MVT	$	62,216,318	0.74	%

Should short-term interest rates rise, the Funds’ investments in TOBs may adversely affect the Funds’ net investment income and dividends to Common Shareholders. Also, fluctuations in the market value of municipal bonds deposited into the TOB may adversely affect the Funds’ net asset values per share.

Zero-Coupon Bonds: The Funds may invest in zero-coupon bonds, which are normally issued at a significant discount from face value and do not provide for periodic interest payments. Zero-coupon bonds may experience greater volatility in market value than similar maturity debt obligations which provide for regular interest payments.

Segregation and Collateralization: In cases in which the 1940 Act and the interpretive positions of the Securities and Exchange Commission (“SEC”) require that the Funds either deliver collateral or segregate assets in connection with certain investments (e.g., financial futures contracts) the Funds will, consistent with SEC rules and/or certain interpretive letters issued by the

SEC, segregate collateral or designate on their books and records cash or other liquid securities having a market value at least equal to the amount that would otherwise be required to be physically segregated. Furthermore, based on requirements and agreements with certain exchanges and third party broker-dealers, each party has requirements to deliver/deposit securities as collateral for certain investments.

Investment Transactions and Investment Income: For financial reporting purposes, investment transactions are recorded on the dates the transactions are entered into (the trade dates). Realized gains and losses on investment transactions are determined on the identified cost basis. Dividend income is recorded on the ex-dividend dates. Interest income, including amortization and accretion of premiums and discounts on debt securities, is recognized on the accrual basis. Consent fees are compensation for agreeing to changes in the terms of debt instruments and are included in interest income in the Statements of Operations.

Dividends and Distributions: Dividends from net investment income are declared and paid monthly. Distributions of capital gains are recorded on the ex-dividend dates. The amount and timing of dividends and distributions are determined in accordance with federal income tax regulations, which may differ from US GAAP. Dividends and distributions to Preferred Shareholders are accrued and determined as described in Note 7.

Income Taxes: It is each Fund’s policy to comply with the requirements of the Internal Revenue Code of 1986, as amended, applicable to regulated investment companies and to distribute substantially all of its taxable income to its shareholders. Therefore, no federal income tax provision is required.

Each Fund files US federal and various state and local tax returns. No income tax returns are currently under examination. The statute of limitations on the Funds’ US federal tax returns remains open for each of the four periods ended as follows:



	Year Ended	Period	Year Ended	Year Ended

APX	April 30, 2010	July 1, 2008 to April 30, 2009	June 30, 2008	June 30, 2007

MUA	April 30, 2010	June 1, 2008 to April 30, 2009	May 31, 2008	May 31, 2007

MEN	April 30, 2010	February 1, 2009 to April 30, 2009	January 31, 2009	January 31, 2008

MHD	April 30, 2010	April 30, 2009	April 30, 2008	April 30, 2007

MUH	April 30, 2010	August 1, 2008 to April 30, 2009	July 31, 2008	July 31, 2007

MUS	April 30, 2010	April 30, 2009	April 30, 2008	April 30, 2007

MUI	April 30, 2010	June 1, 2008 to April 30, 2009	May 31, 2008	May 31, 2008

MVT	April 30, 2010	November 1, 2008 to April 30, 2009	October 31, 2008	October 31, 2007

The statutes of limitations on the Funds’ state and local tax returns may remain open for an additional year depending upon the jurisdiction. There are no uncertain tax positions that require recognition of a tax liability.



68	SEMI-ANNUAL REPORT	OCTOBER 31, 2010

Notes to Financial Statements (continued)

Deferred Compensation and BlackRock Closed-End Share Equivalent Investment Plan: Under the deferred compensation plan approved by each Fund’s Board, non-interested Directors (“Independent Directors”) may defer a portion of their annual complex-wide compensation. Deferred amounts earn an approximate return as though equivalent dollar amounts had been invested in common shares of certain other BlackRock Closed-End Funds selected by the Independent Directors. This has approximately the same economic effect for the Independent Directors as if the Independent Directors had invested the deferred amounts directly in certain other BlackRock Closed-End Funds.

The deferred compensation plan is not funded and obligations thereunder represent general unsecured claims against the general assets of each Fund. Each Fund may, however, elect to invest in common shares of certain other BlackRock Closed-End Funds selected by the Independent Directors in order to match its deferred compensation obligations. Investments to cover each Fund’s deferred compensation liability, if any, are included in other assets in the Statements of Assets and Liabilities. Dividends and distributions from the BlackRock Closed-End Fund investments under the plan are included in income — affiliated in the Statements of Operations.

Other: Expenses directly related to a Fund are charged to that Fund. Other operating expenses shared by several funds are pro rated among those funds on the basis of relative net assets or other appropriate methods. The Funds have an arrangement with the custodian whereby fees may be reduced by credits earned on uninvested cash balances, which if applicable are shown as fees paid indirectly in the Statements of Operations. The custodian imposes fees on overdrawn cash balances, which can be offset by accumulated credits earned or may result in additional custody charges.

2. Derivative Financial Instruments:

The Funds engage in various portfolio investment strategies using derivative contracts both to increase the returns of the Funds and to economically hedge, or protect, their exposure to certain risks such as interest rate risk. These contracts may be transacted on an exchange.

Losses may arise if the value of the contract decreases due to an unfavorable change in the market rates or values of the underlying instrument or if the counterparty does not perform under the contract. Counterparty risk related to exchange-traded financial futures contracts is minimal because of the protection against defaults provided by the exchange on which these contracts trade.

Financial Futures Contracts: The Funds purchase or sell financial futures contracts and options on financial futures contracts to gain exposure to, or economically hedge against, changes in interest rates (interest rate risk). Financial futures contracts are contracts for delayed delivery of securities or currencies at a specific future date and at a specific price or yield. Pursuant to the contract, the Funds agree to receive from or pay to the broker an amount of cash equal to the daily fluctuation in value of the contract. Such receipts or payments are known as margin variation and are recognized by the Funds as unrealized gains or losses. When the contract is closed, the Funds record a realized gain or loss equal to the difference between the value of the contract at the time it was opened and the value at the time it was closed. The use of financial futures transactions involves the risk of an imperfect correlation in the movements in the price of financial futures contracts, interest rates and the underlying assets.


Derivative Instruments Categorized by Risk Exposure:

The Effect of Derivative Instruments on the Statements of Operations Six Months Ended October 31, 2010*

			Net Realized Gain (Loss) from

	APX		MUA		MEN			MHD		MUH		MUS		MVT

Interest rate contracts:
Financial futures contracts	$	4,454	$	6,998	$	(170,354	)	$	5,726	$	4,453	$	8,271	$	(213,064	)

For the six months ended October 31, 2010, the average quarterly balance of outstanding derivative financial instruments was as follows:


	APX		MUA		MEN		MHD		MUH		MUS		MVT

Financial futures contracts: Average number of contracts sold		4		6		43		5		4		7		77

Average notional value of contracts sold	$	426,445	$	670,129	$	5,172,172	$	548,287	$	426,445	$	791,970	$	9,220,097


*	As of October 31, 2010, there were no financial futures contracts outstanding.



SEMI-ANNUAL REPORT	OCTOBER 31, 2010	69

Notes to Financial Statements (continued)

3. Investment Advisory Agreement and Other Transactions with Affiliates:

The PNC Financial Services Group, Inc. (“PNC”), Bank of America Corporation (“BAC”) and Barclays Bank PLC (“Barclays”) are the largest stockholders of BlackRock, Inc. (“BlackRock”). Due to the ownership structure, PNC is an affiliate of the Funds for 1940 Act purposes, but BAC and Barclays are not.

Each Fund entered into an Investment Advisory Agreement with BlackRock Advisors, LLC (the “Manager”), the Funds’ investment advisor, an indirect, wholly owned subsidiary of BlackRock, to provide investment advisory and administration services. The Manager is responsible for the management of each Fund’s portfolio and provides the necessary personnel, facilities, equipment and certain other services necessary to the operations of each Fund. For such services, each Fund pays the Manager a monthly fee at the following annual rates of each Fund’s average daily net assets as follows:



APX	0.65	%
MUA	0.55	%
MEN	0.50	%
MHD	0.55	%
MUH	0.55	%
MUS	0.55	%
MUI	0.55	%
MVT	0.50	%

Average daily net assets is the average daily value of each Fund’s total assets minus the sum of its accrued liabilities.

The Manager contractually agreed to waive a portion of the investment advisory fees or other expenses on MUI as a percentage of its average daily net assets as follows: 0.10% through July 31, 2009, 0.05% through July 31, 2010 and 0.00% thereafter. For the six months ended October 31, 2010, the waiver was $112,432 which is included in fees waived by advisor in the Statements of Operations.

The Manager voluntarily agreed to waive its investment advisory fees by the amount of investment advisory fees each Fund pays to the Manager indirectly through its investment in affiliated money market funds, however the Manager does not waive its investment advisory fees by the amount of investment advisory fees paid through each Fund’s investment in other affiliated investment companies, if any. These amounts are shown as, or included in, fees waived by advisor in the Statements of Operations. For the six months ended October 31, 2010, the amounts waived were as follows:



APX	$	238
MUA	$	294
MEN	$	1,423
MHD	$	540
MUH	$	200
MUS	$	2,144
MUI	$	1,491
MVT	$	686

The Manager, for MUS, voluntarily agreed to waive its advisory fee on the proceeds of the Preferred Shares and TOBs that exceed 35% of net assets applicable to Common Shareholders. This amount is included in fees waived by advisor in the Statements of Operations. For the six months ended October 31, 2010 the waiver was $66,975.

The Manager entered into a sub-advisory agreement with BlackRock Investment Management, LLC (“BIM”), an affiliate of the Manager. The Manager pays BIM for services it provides, a monthly fee that is a percentage of the investment advisory fees paid by each Fund to the Manager.

For the six months ended October 31, 2010, the Funds reimbursed the manager for certain accounting services, which are included in accounting services in the Statements of Operations. The reimbursements were as follows:



APX	$	1,734
MUA	$	2,744
MEN	$	4,861
MHD	$	3,264
MUH	$	2,447
MUS	$	2,836
MUI	$	8,922
MVT	$	4,988

Certain officers and/or directors of the Funds are officers and/or directors of BlackRock or its affiliates. The Funds reimburse the Manager for compensation paid to the Funds’ Chief Compliance Officer.

4. Investments

Purchases and sales of investments, excluding short-term securities, for the six months ended October 31, 2010, were as follows:



		Purchases		Sales

APX	$	17,009,196	$	21,431,635
MUA	$	25,253,958	$	32,479,161
MEN	$	25,705,501	$	22,265,952
MHD	$	27,556,710	$	32,294,430
MUH	$	19,968,107	$	25,956,765
MUS	$	27,532,708	$	29,094,918
MUI	$	93,398,681	$	97,615,384
MVT	$	37,377,240	$	51,048,815



70	SEMI-ANNUAL REPORT	OCTOBER 31, 2010

Notes to Financial Statements (continued)

5. Capital Loss Carryforward:

As of April 30, 2010, the Funds had capital loss carryforwards available to offset future realized capital gains through the indicated expiration dates:



Expires April 30,	APX		MUA		MEN		MUH		MUS		MUI		MVT

2011	$	2,163,492	$	7,452,325		—	$	189,408		—		—		—
2012		1,659,281		5,486,273	$	364,714		—		—		—		—
2013		35,292		3,762,613		—		—		—		—		—
2015		3,072,949		5,065,527		—		—		—	$	334,473		—
2016		—		527,784		2,508,309		—	$	623,720		611,323	$	4,929,816
2017		373,543		1,575,568		3,540,378		—		5,373,343		321,623		—
2018		2,070,050		—		1,225,298		—		6,614,798		3,730,704		—

Total	$	9,374,607	$	23,870,090	$	7,638,699	$	189,408	$	12,611,861	$	4,998,123	$	4,929,816

6. Concentration, Market and Credit Risk:

MEN, MUH and MUI invest a substantial amount of their assets in issuers located in a single state or limited number of states. Please see the Schedules of Investments for concentration in specific states.

Many municipalities insure repayment of their bonds, which may reduce the potential for loss due to credit risk. The market value of these bonds may fluctuate for other reasons, including market perception of the value of such insurance, and there is no guarantee that the insurer will meet its obligation.

In the normal course of business, the Funds invest in securities and enter into transactions where risks exist due to fluctuations in the market (market risk) or failure of the issuer of a security to meet all its obligations (issuer credit risk). The value of securities held by the Funds may decline in response to certain events, including those directly involving the issuers whose securities are owned by the Funds; conditions affecting the general economy; overall market changes; local, regional or global political, social or economic instability; and currency and interest rate and price fluctuations. Similar to issuer credit risk, the Funds may be exposed to counterparty credit risk, or the risk that an entity with which the Funds have unsettled or open transactions may fail to or be unable to perform on its commitments. The Funds manage counterparty credit risk by entering into transactions only with coun-terparties that they believe have the financial resources to honor their obligations and by monitoring the financial stability of those counterparties. Financial assets, which potentially expose the Funds to market, issuer and counterparty credit risks, consist principally of financial instruments and receivables due from counterparties. The extent of the Funds’ exposure to market, issuer and counterparty credit risks with respect to these financial assets is generally approximated by their value recorded in the Funds’ Statements of Assets and Liabilities, less any collateral held by the Funds.

As of October 31, 2010, APX and MUA invested a significant portion of their assets in the Health and Corporate sectors. MEN invested a significant portion of its assets in the County/City/Special District/School District and Transportation sectors. MHD, MUH and MVT invested a significant portion of their assets in the Health sector. MUS invested a significant portion of its assets in the County/City/Special District/School District, Utilities and Transportation sectors. MUI invested a significant portion of its assets in the State and County/City/Special District/School District sectors. Changes in economic conditions affecting the County/City/Special District/School District, Health, State, Transportation and Utilities sectors would have a greater impact on the Funds and could affect the value, income and/or liquidity of positions in such securities.

7. Capital Share Transactions:

Each Fund, except APX, is authorized to issue 200 million shares (150 million for APX), all of which were initially classified as Common Shares. The par value for each Fund’s Common Shares is $0.10. The par value for each Fund’s Preferred Shares is $0.10 except MEN Series A, B and C, which is $0.025, and MVT Series A, B and C, which is $0.05. The Board is authorized, however, to reclassify any unissued shares without approval of Common Shareholders.

Common Shares

For the periods shown, shares issued and outstanding increased by the following amounts as a result of dividend and distribution reinvestment:



	Six Months Ended October 31, 2010		Year Ended April 30, 2010

APX		9,368		49,557
MUA		52,762		163,187
MEN		39,726		—
MHD		28,467		3,195
MUH		25,137		—
MUS		40,983		7,093
MVT		73,485		121,196

Shares issued and outstanding remained constant for MUI for the six months ended October 31, 2010 and the year ended April 30, 2010 for MEN, MUH and MUI.

Preferred Shares

The Preferred Shares are redeemable at the option of each Fund, in whole or in part, on any dividend payment date at their liquidation preference per share plus any accumulated and unpaid dividends whether or not declared. The Preferred Shares are also subject to mandatory redemption at their liquidation preference plus any accumulated and unpaid dividends, whether or not declared, if certain requirements relating to the composition of the assets and liabilities of a Fund, as set forth in each Fund’s Articles of Supplementary (the “Governing Instrument”) are not satisfied.



SEMI-ANNUAL REPORT	OCTOBER 31, 2010	71

Notes to Financial Statements (continued)

From time to time in the future, each Fund may effect repurchases of its Preferred Shares at prices below their liquidation preference as agreed upon by the Fund and seller. Each Fund also may redeem its Preferred Shares from time to time as provided in the applicable Governing Instrument. Each Fund intends to effect such redemptions and/or repurchases to the extent necessary to maintain applicable asset coverage requirements or for such other reasons as the Board may determine.

The holders of Preferred Shares have voting rights equal to the holders of Common Shares (one vote per share) and will vote together with holders of Common Shares (one vote per share) as a single class. However, the holders of Preferred Shares, voting as a separate class, are also entitled to elect two Directors for each Fund. In addition, the 1940 Act requires that along with approval by shareholders that might otherwise be required, the approval of the holders of a majority of any outstanding Preferred Shares, voting separately as a class would be required to (a) adopt any plan of reorganization that would adversely affect the Preferred Shares, (b) change a Fund’s sub-classification as a closed-end investment company or change its fundamental investment restrictions or (c) change its business so as to cease to be an investment company.

MEN, MHD, MUH, MUS, MUI, and MVT had the following series of Preferred Shares outstanding, effective yields and reset frequency as of October 31, 2010:



	Series		Preferred Shares		Effective Yield			Reset Frequency Days

MEN		A¹		1,525		0.43	%		28
		B¹		1,525		0.38	%		28
		C¹		1,525		0.44	%		7
		D²		1,128		1.49	%		7

MHD		A¹		1,473		0.44	%		7
		B¹		1,473		0.43	%		7
		C²		402		1.50	%		7

MUH		A¹		1,101		0.44	%		7
		B¹		1,101		0.44	%		7

MUS		A¹		1,740		0.44	%		7
		B¹		1,740		0.44	%		7

MUI		M7²		1,795		1.50	%		7
		T7²		2,423		1.50	%		7
		W7²		1,795		1.49	%		7
		TH7²		2,423		1.50	%		7
		F7²		1,795		1.50	%		7
		TH28²		1,256		1.50	%		28

MVT		A¹		1,440		0.44	%		28
		B¹		1,440		0.43	%		28
		C¹		1,440		0.43	%		7
		D²		1,280		1.50	%		7


	¹	The maximum applicable rate on this series of Preferred Shares is the higher of 110% of the AA commercial paper rate or 110% of 90% of the Kenny S&P 30-day High Grade Index rate divided by 1.00 minus the marginal tax rate.

	²	The maximum applicable rate on this series of Preferred Shares is the higher of 110% plus or times (i) the Telerate/BAA LIBOR or (ii) 90% of Kenny S&P 30-day High Grade Index rate divided by 1.00 minus the marginal tax rate.

Dividends on seven-day and 28-day Preferred Shares are cumulative at a rate which is reset every seven or 28 days, respectively, based on the results of an auction. If the Preferred Shares fail to clear the auction on an auction date, each Fund is required to pay the maximum applicable rate on the Preferred Shares to holders of such shares for successive dividend periods until such time as the shares are successfully auctioned. The maximum applicable rate on the Preferred Shares is as footnoted in the preceding table above. The low, high and average dividend rates on the Preferred Shares for each Fund for the period were as follows:



	Series		Low			High			Average

MEN		A		0.37	%		0.50	%		0.41	%
		B		0.38	%		0.49	%		0.37	%
		C		0.35	%		0.49	%		0.42	%
		D		1.43	%		1.53	%		1.48	%

MHD		A		0.35	%		0.47	%		0.42	%
		B		0.35	%		0.47	%		0.42	%
		C		1.43	%		1.54	%		1.48	%

MUH		A		0.35	%		0.47	%		0.42	%
		B		0.35	%		0.47	%		0.42	%

MUS		A		0.35	%		0.47	%		0.42	%
		B		0.35	%		0.49	%		0.42	%

MUI		M7		1.43	%		1.53	%		1.48	%
		T7		1.43	%		1.53	%		1.49	%
		W7		1.45	%		1.53	%		1.49	%
		TH7		1.43	%		1.53	%		1.48	%
		F7		1.43	%		1.53	%		1.48	%
		TH28		1.43	%		1.52	%		1.48	%

MVT		A		0.38	%		0.46	%		0.43	%
		B		0.38	%		0.47	%		0.41	%
		C		0.38	%		0.47	%		0.42	%
		D		1.43	%		1.53	%		1.45	%

Since February 13, 2008, the Preferred Shares of the Funds failed to clear any of their auctions. As a result, the Preferred Shares dividend rates were reset to the maximum applicable rate, which ranged from 0.35% to 1.54% for the six months ended October 31, 2010. A failed auction is not an event of default for the Funds but it has a negative impact on the liquidity of Preferred Shares. A failed auction occurs when there are more sellers of a Fund’s auction rate preferred shares than buyers. A successful auction for the Funds’ Preferred Shares may not occur for some time, if ever, and even if liquidity does resume, Preferred Shareholders may not have the ability to sell the Preferred Shares at their liquidation preference.

The Funds may not declare dividends or make other distributions on Common Shares or purchase any such shares if, at the time of the declaration, distribution or purchase, asset coverage with respect to the outstanding Preferred Shares is less than 200%.

The Funds pay commissions of 0.25% on the aggregate principal amount of all shares that successfully clear their auctions and 0.15% on the aggregate principal amount of all shares that fail to clear their auctions. Certain broker dealers have individually agreed to reduce commissions for failed auctions.



72	SEMI-ANNUAL REPORT	OCTOBER 31, 2010

Notes to Financial Statements (concluded)

During the year ended April 30, 2010, MEN, MHD, MUH, MUS and MVT announced the following redemptions of Preferred Shares at a price of $25,000 per share plus any accrued and unpaid dividends through the redemption date:



	Series		Redemption Date		Shares Redeemed		Aggregate Principal

MEN		A		7/14/09		174	$	4,350,000
		B		7/21/09		174	$	4,350,000
		C		6/30/09		174	$	4,350,000
		D		7/06/09		129	$	3,225,000

MHD		A		7/08/09		145	$	3,625,000
		B		7/06/09		145	$	3,625,000
		C		7/07/09		39	$	975,000

MUH		A		7/08/09		119	$	2,975,000
		B		7/06/09		119	$	2,975,000

MUS		A		7/06/09		144	$	3,600,000
		B		7/07/09		144	$	3,600,000

MVT		A		7/30/09		111	$	2,775,000
		B		7/09/09		111	$	2,775,000
		C		7/09/09		111	$	2,775,000
		D		7/07/09		99	$	2,475,000

The Funds financed the Preferred Share redemptions with cash received from TOB transactions.

Preferred Shares issued and outstanding remained constant for the six months ended October 31, 2010 for all funds and the year ended April 30, 2010 for MUI.

8. Restatement Information:

Subsequent to the initial issuance of the May 31, 2006 financial statements for MUI and July 31, 2006 for MUH, the Funds determined that the criteria for sale accounting in FAS 140 had not been met for certain transfers of municipal bonds related to investments in TOB Residuals, and that these transfers should have been accounted for as secured borrowings rather than as sales. As a result, certain financial highlights for the year ended May 31, 2005 for MUI and July 31, 2005 for MUH have been restated to give effect to recording the transfers of the municipal bonds as secured borrowings, including recording interest on the bonds as interest income and interest on the secured borrowings as interest expense.



MUH Financial Highlights For the Year Ended July 31, 2005	Previously Reported			Restated

Total expenses, net of reimbursement*		1.19	%		1.27	%
Total expenses*		1.19	%		1.27	%
Portfolio turnover		45.11	%		38	%



MUI Financial Highlights For the Year Ended May 31, 2005	Previously Reported			Restated

Total expenses, net of waiver*		0.84	%		0.85	%
Portfolio turnover		54.55	%		54	%


	*	Do not reflect the effect of dividends to Preferred Shareholders.

9. Subsequent Events:

Management’s evaluation of the impact of all subsequent events on the Funds’ financial statements was completed through the date the financial statements were issued and the following items were noted:

Each Fund paid a net investment income dividend on December 1, 2010 to Common Shareholders of record on November 15, 2010 as follows:



	Common Dividend Per Share

APX		$	0.0440
MUA		$	0.0625
MEN		$	0.0570
MHD		$	0.0890
MUH		$	0.0805
MUS		$	0.0740
MUI		$	0.0715
MVT		$	0.0885

Each Fund paid a net investment income dividend on December 31, 2010 to Common Shareholders of record on December 15, 2010 as follows:



	Common Dividend Per Share

APX		$	0.0440
MUA		$	0.0625
MEN		$	0.0570
MHD		$	0.0905
MUH		$	0.0805
MUS		$	0.0740
MUI		$	0.0715
MVT		$	0.0885

The dividends declared on Preferred Shares for the period November 1, 2010 to November 30, 2010 were as follows:



	Series		Dividends Declared

MEN		A	$	13,366
		B	$	11,944
		C	$	12,942
		D	$	34,298

MHD		A	$	6,715
		B	$	6,647
		C	$	3,695

MUH		A	$	9,431
		B	$	7,100

MUS		A	$	14,945
		B	$	14,770

MUI		M7	$	54,238
		T7	$	73,387
		W7	$	54,365
		TH7	$	73,432
		TH28	$	38,625
		F7	$	54,238

MVT		A	$	12,878
		B	$	12,682
		C	$	12,250
		D	$	38,593



SEMI-ANNUAL REPORT	OCTOBER 31, 2010	73

Disclosure of Investment Advisory Agreements and Sub-Advisory Agreements

The Board of Directors (each, a “Board,” and, collectively, the “Boards,” and the members of which are referred to as “Board Members”) of each of BlackRock Apex Municipal Fund, Inc. (“APX”), BlackRock Muni Intermediate Duration Fund, Inc. (“MUI”), BlackRock MuniAssets Fund, Inc. (“MUA”), BlackRock MuniEnhanced Fund, Inc. (“MEN”), BlackRock MuniHoldings Fund, Inc. (“MHD”), BlackRock MuniHoldings Fund II, Inc. (“MUH”), BlackRock MuniHoldings Quality Fund, Inc. (“MUS”) and BlackRock MuniVest Fund II, Inc. (“MVT,” and together with APX, MUI, MUA, MEN, MHD, MUH, and MUS, each a “Fund” and, collectively, the “Funds”) met on April 8, 2010 and May 13 – 14, 2010 to consider the approval of each Fund’s investment advisory agreement (collectively, the “Advisory Agreements”) with BlackRock Advisors, LLC (the “Manager”), each Fund’s investment advisor. The Boards also considered the approval of the sub-advisory agreement (collectively, the “Sub-Advisory Agreements”) between the Manager and BlackRock Investment Management, LLC (the “Sub-Advisor”), with respect to each Fund. The Manager and the Sub-Advisor are referred to herein as “BlackRock.” The Advisory Agreements and the Sub-Advisory Agreements are referred to herein as the “Agreements.”

Activities and Composition of the Board

The Board of each Fund consists of ten individuals, eight of whom are not “interested persons” of the Funds as defined in the Investment Company Act of 1940 (the “1940 Act”) (the “Independent Board Members”). The Board Members are responsible for the oversight of the operations of each Fund and perform the various duties imposed on the directors of investment companies by the 1940 Act. The Independent Board Members have retained independent legal counsel to assist them in connection with their duties. The Chairman of each Board is an Independent Board Member. Each Board has established five standing committees: an Audit Committee, a Governance and Nominating Committee, a Compliance Committee, a Performance Oversight Committee and an Executive Committee, each of which is composed of Independent Board Members (except for the Executive Committee, which also has one interested Board Member) and is chaired by an Independent Board Member. The Board of each of MVT, MUI, MEN, MHD, MUH, and MUS also has two ad hoc committees, the Joint Product Pricing Committee, which consists of Independent Board Members and the directors/trustees of the boards of certain other BlackRock-managed funds, who are not “interested persons” of their respective funds, and the Ad Hoc Committee on Auction Market Preferred Shares. The Board of each of APX and MUA has one ad hoc committee, the Joint Product Pricing Committee.

The Agreements

Pursuant to the 1940 Act, the Boards are required to consider the continuation of the Agreements on an annual basis. In connection with this process, the Boards assessed, among other things, the nature, scope and quality of the services provided to the Funds by the personnel of BlackRock and its affiliates, including investment management, administrative and shareholder services, oversight of fund accounting and custody, marketing services and assistance in meeting applicable legal and regulatory requirements.

From time to time throughout the year, the Boards, acting directly and through their committees, considered at each of their meetings factors that are relevant to their annual consideration of the renewal of the Agreements, including the services and support provided by BlackRock to the Funds and their shareholders. Among the matters the Boards considered were: (a) investment performance for one-, three- and five-year periods, as applicable, against peer funds, and applicable benchmarks, if any, as well as senior management’s and portfolio managers’ analysis of the reasons for any over performance or underperformance against a Fund’s peers and/or benchmark, as applicable; (b) fees, including advisory and other amounts paid to BlackRock and its affiliates by each Fund for services such as call center and fund accounting; (c) each Fund’s operating expenses; (d) the resources devoted to and compliance reports relating to each Fund’s investment objective, policies and restrictions; (e) each Fund’s compliance with its Code of Ethics and compliance policies and procedures; (f) the nature, cost and character of non-investment management services provided by BlackRock and its affiliates; (g) BlackRock’s and other service providers’ internal controls; (h) BlackRock’s implementation of the proxy voting policies approved by the Boards; (i) execution quality of portfolio transactions; (j) BlackRock’s implementation of each Fund’s valuation and liquidity procedures; (k) an analysis of contractual and actual management fees for products with similar investment objectives across the open-end fund, closed-end fund and institutional account product channels, as applicable; and; (l) periodic updates on BlackRock’s business.



74	SEMI-ANNUAL REPORT	OCTOBER 31, 2010

Disclosure of Investment Advisory Agreements and Sub-Advisory Agreements (continued)

Board Considerations in Approving the Agreements

The Approval Process: Prior to the April 8, 2010 meeting, the Boards requested and each received materials specifically relating to the Agreements. The Boards are engaged in a process with BlackRock to periodically review the nature and scope of the information provided to better assist their deliberations. The materials provided in connection with the April meeting included: (a) information independently compiled and prepared by Lipper, Inc. (“Lipper”) on Fund fees and expenses, and the investment performance of each Fund as compared with a peer group of funds as determined by Lip-per, and in the case of APX, MUI, MUA, MHD, MUH and MVT, a customized peer group selected by BlackRock (collectively, “Peers”); (b) information on the profitability of the Agreements to BlackRock and a discussion of fall-out benefits to BlackRock and its affiliates and significant shareholders; (c) a general analysis provided by BlackRock concerning investment advisory fees charged to other clients, such as institutional clients and open-end funds, under similar investment mandates; (d) the impact of economies of scale; (e) a summary of aggregate amounts paid by each Fund to BlackRock; and (f) if applicable, a comparison of management fees to similar BlackRock closed-end funds, as classified by Lipper.

At an in-person meeting held on April 8, 2010, the Boards reviewed materials relating to their consideration of the Agreements. As a result of the discussions that occurred during the April 8, 2010 meeting, the Boards presented BlackRock with questions and requests for additional information and BlackRock responded to these requests with additional written information in advance of the May 13 – 14, 2010 Board meeting.

At an in-person meeting held on May 13 – 14, 2010, each Board, including its Independent Board Members, unanimously approved the continuation of the Advisory Agreement between the Manager and its respective Fund and the Sub-Advisory Agreement between the Manager and the Sub-Advisor with respect to its respective Fund, each for a one-year term ending June 30, 2011. In approving the continuation of the Agreements, the Boards considered: (a) the nature, extent and quality of the services provided by BlackRock; (b) the investment performance of each Fund and BlackRock; (c) the advisory fee and the cost of the services and profits to be realized by BlackRock and its affiliates from their relationship with each Fund; (d) economies of scale; and (e) other factors deemed relevant by the Board Members.

The Boards also considered other matters they deemed important to the approval process, such as services related to the valuation and pricing of each Fund’s portfolio holdings, direct and indirect benefits to BlackRock and its affiliates and significant shareholders from their relationship with each Fund and advice from independent legal counsel with respect to the review process and materials submitted for the Boards’ review. The Boards noted the willingness of BlackRock personnel to engage in open, candid discussions with the Boards. The Boards did not identify any particular information as controlling, and each Board Member may have attributed different weights to the various items considered.

A. Nature, Extent and Quality of the Services Provided by BlackRock: The Boards, including the Independent Board Members, reviewed the nature, extent and quality of services provided by BlackRock, including the investment advisory services and the resulting performance of each Fund. Throughout the year, the Boards compared each Fund’s performance to the performance of a comparable group of closed-end funds, and the performance of a relevant benchmark, if any. The Boards met with BlackRock’s senior management personnel responsible for investment operations, including the senior investment officers. The Boards also reviewed the materials provided by each Fund’s portfolio management team discussing each Fund’s performance and each Fund’s investment objective, strategies and outlook.

The Boards considered, among other factors, the number, education and experience of BlackRock’s investment personnel generally and each Fund’s portfolio management team, investments by portfolio managers in the funds they manage, BlackRock’s portfolio trading capabilities, BlackRock’s use of technology, BlackRock’s commitment to compliance, BlackRock’s credit analysis capabilities, BlackRock’s risk analysis capabilities and BlackRock’s approach to training and retaining portfolio managers and other research, advisory and management personnel. The Boards also reviewed a general description of BlackRock’s compensation structure with respect to each Fund’s portfolio management team and BlackRock’s ability to attract and retain high-quality talent.

In addition to advisory services, the Boards considered the quality of the administrative and non-investment advisory services provided to each Fund. BlackRock and its affiliates and significant shareholders provide each Fund with certain administrative and other services (in addition to any such services provided to each Fund by third parties) and officers and other personnel as are necessary for the operations of each Fund. In addition to investment advisory services, BlackRock and its affiliates provide each Fund with other services, including: (i) preparing disclosure documents, such as the prospectus and the statement of additional information in connection with the initial public offering and periodic shareholder reports; (ii) preparing communications with analysts to support secondary market trading of each Fund; (iii) assisting with daily accounting and pricing; (iv) preparing periodic filings with regulators and stock exchanges; (v) overseeing and coordinating the activities of other service providers; (vi) organizing Board meetings and preparing the materials for such Board meetings; (vii) providing legal and compliance support; and (viii) performing other administrative functions necessary for the operation of each Fund, such as tax reporting, fulfilling regulatory filing requirements, and call center services. The Boards reviewed the structure and duties of BlackRock’s fund administration, accounting, legal and compliance departments and considered BlackRock’s policies and procedures for assuring compliance with applicable laws and regulations.



SEMI-ANNUAL REPORT	OCTOBER 31, 2010	75

Disclosure of Investment Advisory Agreements and Sub-Advisory Agreements (continued)

B. The Investment Performance of the Funds and BlackRock: The Boards, including the Independent Board Members, also reviewed and considered the performance history of each Fund. In preparation for the April 8, 2010 meeting, the Boards were provided with reports, independently prepared by Lipper, which included a comprehensive analysis of each Fund’s performance. The Boards also reviewed a narrative and statistical analysis of the Lipper data that was prepared by BlackRock, which analyzed various factors that affect Lipper’s rankings. In connection with their reviews, the Boards received and reviewed information regarding the investment performance of each Fund as compared to a representative group of similar funds as determined by Lipper and to all funds in each Fund’s applicable Lipper category, and in the case of APX, MUI, MUA, MHD, MUH and MVT, a customized peer group selected by BlackRock. The Boards were provided with a description of the methodology used by Lipper to select peer funds. The Boards regularly review the performance of each Fund throughout the year.

The Boards of APX, MUI, MUA, MHD, MUH and MVT noted that, in general, each of their respective Funds performed better than their respective Peers in that each Fund’s performance was at or above the median of its Customized Lipper Peer Group Composite in each of the one-, three- and five-year periods reported.

The Board of MEN noted that, in general, MEN performed better than its Peers in that MEN’s performance was at or above the median of its Lipper Performance Composite in each of the one-, three- and five-year periods reported.

The Board of MUS noted that MUS performed below the median of its Lipper Performance Composite in the three- and five-year periods reported, but that MUS performed better than or equal to the median of its Lipper Performance Composite in the one-year period reported. The Board of MUS and BlackRock reviewed the reasons for MUS’s underperformance during the three- and five-year periods compared with its Peers. The Board of MUS was informed that, among other things, MUS’s performance was hindered by its short duration posture during a period when interest rates were decreasing.

The Board of MUS and BlackRock discussed BlackRock’s strategy for improving MUS’s performance and BlackRock’s commitment to providing the resources necessary to assist MUS’s portfolio managers and to improve MUS’s performance.

The Boards noted that BlackRock has made changes to the organization of the overall fixed income group management structure designed to result in a strengthened leadership team with clearer accountability.

C. Consideration of the Advisory Fees and the Cost of the Services and Profits to be Realized by BlackRock and its Affiliates from their Relationship with the Funds: The Boards, including the Independent Board Members, reviewed each Fund’s contractual advisory fee rate compared with the other funds in its Lipper category. The Boards also compared each Fund’s total expenses, as well as actual management fees, to those of other funds in its Lipper category. The Boards considered the services provided and the fees charged by BlackRock to other types of clients with similar investment mandates, including separately managed institutional accounts.

The Boards received and reviewed statements relating to BlackRock’s financial condition and profitability with respect to the services it provided each Fund. The Boards were also provided with a profitability analysis that detailed the revenues earned and the expenses incurred by BlackRock for services provided to each Fund. The Boards reviewed BlackRock’s profitability with respect to each Fund and other funds the Boards currently oversee for the year ended December 31, 2009 compared to available aggregate profitability data provided for the year ended December 31, 2008. The Boards reviewed BlackRock’s profitability with respect to other fund complexes managed by the Manager and/or its affiliates. The Boards reviewed BlackRock’s assumptions and methodology of allocating expenses in the profitability analysis, noting the inherent limitations in allocating costs among various advisory products. The Boards recognized that profitability may be affected by numerous factors including, among other things, fee waivers and expense reimbursements by the Manager, the types of funds managed, expense allocations and business mix, and the difficulty of comparing profitability as a result of those factors.

The Boards noted that, in general, individual fund or product line profitability of other advisors is not publicly available. Nevertheless, to the extent such information was available, the Boards considered BlackRock’s overall operating margin, in general, compared to the operating margin for leading investment management firms whose operations include advising closed-end funds, among other product types. That data indicates that operating margins for BlackRock with respect to its registered funds are generally consistent with margins earned by similarly situated publicly traded competitors. In addition, the Boards considered, among other things, certain third party data comparing BlackRock’s operating margin with that of other publicly traded asset management firms. That third party data indicates that larger asset bases do not, in themselves, translate to higher profit margins.

In addition, the Boards considered the cost of the services provided to each Fund by BlackRock, and BlackRock’s and its affiliates’ profits relating to the management and distribution of each Fund and the other funds advised by BlackRock and its affiliates. As part of their analysis, the Boards reviewed BlackRock’s methodology in allocating its costs to the management of each Fund. The Boards also considered whether BlackRock has the financial resources necessary to attract and retain high-quality investment management personnel to perform its obligations under the Agreements and to continue to provide the high quality of services that is expected by the Boards.



76	SEMI-ANNUAL REPORT	OCTOBER 31, 2010

Disclosure of Investment Advisory Agreements and Sub-Advisory Agreements (concluded)

Each Board noted that its respective Fund’s contractual management fee rate was lower than or equal to the median contractual management fee rate paid by the Fund’s Peers, in each case, before taking into account any expense reimbursements or fee waivers.

D. Economies of Scale: The Boards, including the Independent Board Members, considered the extent to which economies of scale might be realized as the assets of each Fund increase. The Boards also considered the extent to which each Fund benefits from such economies and whether there should be changes in the advisory fee rate or structure in order to enable each Fund to participate in these economies of scale, for example through the use of breakpoints in the advisory fee based upon the asset level of each Fund.

The Boards noted that most closed-end fund complexes do not have fund level breakpoints because closed-end funds generally do not experience substantial growth after the initial public offering and each fund is managed independently consistent with its own investment objectives. The Boards noted that only one closed-end fund in the Fund Complex has breakpoints in its fee structure. Information provided by Lipper also revealed that only one closed-end fund complex with total closed-end fund nets assets exceeding $10 billion, as of December 31, 2009, used a complex level breakpoint structure.

E. Other Factors Deemed Relevant by the Board Members: The Boards, including the Independent Board Members, also took into account other ancillary or “fall-out” benefits that BlackRock or its affiliates and significant shareholders may derive from their respective relationships with the Funds, both tangible and intangible, such as BlackRock’s ability to leverage its investment professionals who manage other portfolios, an increase in BlackRock’s profile in the investment advisory community, and the engagement of BlackRock’s affiliates and significant shareholders as service providers to the Funds, including for administrative and distribution services. The Boards also considered BlackRock’s overall operations and its efforts to expand the scale of, and improve the quality of, its operations. The Boards also noted that BlackRock may use and benefit from third party research obtained by soft dollars generated by certain mutual fund transactions to assist in managing all or a number of its other client accounts. The Boards further noted that BlackRock completed the acquisition of a complex of exchange-traded funds (“ETFs”) on December 1, 2009, and that BlackRock’s funds may invest in such ETFs without any offset against the management fees payable by the funds to BlackRock.

In connection with its consideration of the Agreements, the Boards also received information regarding BlackRock’s brokerage and soft dollar practices. The Boards received reports from BlackRock which included information on brokerage commissions and trade execution practices throughout the year.

The Boards noted the competitive nature of the closed-end fund marketplace, and that shareholders are able to sell their respective Fund shares in the secondary market if they believe that the Fund’s fees and expenses are too high or if they are dissatisfied with the performance of the Fund.

Conclusion

Each Board, including its Independent Board Members, unanimously approved the continuation of the Advisory Agreement between the Manager and its respective Fund for a one-year term ending June 30, 2011 and the Sub-Advisory Agreement between the Manager and the Sub-Advisor, with respect to its respective Fund, for a one-year term ending June 30, 2011. As part of its approval, each Board considered the discussions of BlackRock’s fee structure, as it applies to its respective Fund, being conducted by the ad hoc Joint Product Pricing Committee. Based upon its evaluation of all of the aforementioned factors in their totality, each Board, including its Independent Board Members, was satisfied that the terms of the Agreements were fair and reasonable and in the best interest of its respective Fund and its shareholders. In arriving at a decision to approve the Agreements, none of the Boards identified any single factor or group of factors as all-important or controlling, but considered all factors together, and different Board Members may have attributed different weights to the various factors considered. The Independent Board Members were also assisted by the advice of independent legal counsel in making this determination. The contractual fee arrangements for each Fund reflect the results of several years of review by the Board Members and predecessor Board Members, and discussions between such Board Members (and predecessor Board Members) and BlackRock. Certain aspects of the arrangements may be the subject of more attention in some years than in others, and the Board Members’ conclusions may be based in part on their consideration of these arrangements in prior years.



SEMI-ANNUAL REPORT	OCTOBER 31, 2010	77

Officers and Directors

Richard E. Cavanagh, Chairman of the Board and Director

Karen P. Robards, Vice Chair of the Board, Chair of the Audit Committee

and Director

Richard S. Davis, Director

Frank J. Fabozzi, Director and Member of the Audit Committee

Kathleen F. Feldstein, Director

James T. Flynn, Director and Member of the Audit Committee

Henry Gabbay, Director

Jerold B. Harris, Director

R. Glenn Hubbard, Director

W. Carl Kester, Director and Member of the Audit Committee

Anne Ackerley, President and Chief Executive Officer

Brendan Kyne, Vice President

Neal Andrews, Chief Financial Officer

Jay Fife, Treasurer

Brian Kindelan, Chief Compliance Officer

Howard Surloff, Secretary

Investment Advisor

BlackRock Advisors, LLC

Wilmington, DE 19809

Sub-Advisor

BlackRock Investment Management, LLC

Plainsboro, NJ 08536

Custodians

The Bank of New York Mellon¹

New York, NY 10286

State Street Bank and Trust Company²

Boston, MA 02101

Transfer Agents

Common Shares:

BNY Mellon Shareowner Services¹

Jersey City, NJ 07310

Computershare Trust Company, N.A.²

Providence, RI 02940

Auction Agent

Preferred Shares:

The Bank of New York Mellon

New York, NY 10286

Accounting Agent

State Street Bank and Trust Company

Princeton, NJ 08540

Independent Registered Public Accounting Firm

Deloitte & Touche LLP

Princeton, NJ 08540

Legal Counsel

Skadden, Arps, Slate, Meagher & Flom LLP

New York, NY 10036

Address of the Funds

100 Bellevue Parkway

Wilmington, DE 19809


	¹	For APX, MUA, MHD, MUH, MUS and MVT.

	²	For MEN and MUI.



78	SEMI-ANNUAL REPORT	OCTOBER 31, 2010

Additional Information

Proxy Results

The Annual Meeting of Shareholders was held on September 2, 2010 for shareholders of record on July 6, 2010, to elect director nominees for each Fund. There were no broker non-votes with regard to any non-routine matters for any of the Funds. Due to a lack of quorum of Preferred Shares, action on the proposal regarding the Preferred Shares nominees’ election for MUH, MUS, MUI and MVT was subsequently adjourned to October 5, 2010; and action on the proposal regarding Preferred Shares nominees’ election for MUI was additionally adjourned to November 2, 2010.

Below are the results with respect to each nominee, who will continue to serve as Director for each of the Funds:


	Richard E. Cavanagh						Kathleen F. Feldstein						Henry Gabbay

	Votes For		Votes Withheld		Abstain		Votes For		Votes Withheld		Abstain		Votes For		Votes Withheld		Abstain

APX		17,389,641		579,660		0		17,402,626		566,675		0		17,403,092		566,209		0
MUA		19,110,585		605,168		0		19,104,810		610,943		0		19,112,279		603,474		0


	Jerrold B. Harris

	Votes For		Votes Withheld		Abstain

APX		17,393,820		575,481		0
MUA		19,126,404		589,349		0

For the Funds listed above, Directors whose term of office continued after the Annual Meeting of Shareholders because they were not up for election are Richard S. Davis, Frank J. Fabozzi, James T. Flynn, R. Glenn Hubbard, W. Carl Kester and Karen P. Robards.

Below are the results with respect to each nominee, who will continue to serve as Director for each of the Funds:


	Richard E. Cavanagh						Richard S. Davis						Frank J. Fabozzi²

			Votes						Votes						Votes
	Votes For		Withheld		Abstain		Votes For		Withheld		Abstain		Votes For		Withheld		Abstain

MEN		24,985,842		864,768		0		24,851,085		999,525		0		1,558		437		0
MHD		11,955,268		270,563		0		11,870,890		354,941		0		969		479		0
MUH		9,619,191		152,566		0		9,538,255		233,502		0		600		15		354
MUS		9,765,954		490,683		0		9,749,677		506,960		0		903		67		403
MUI¹		35,413,968		754,469		0		35,375,112		793,325		0		1,983		330		0
MVT		17,486,254		793,261		0		17,516,541		762,974		0		1,190		249		454


	Kathleen F. Feldstein						James T. Flynn						Henry Gabbay

			Votes						Votes				Votes
	Votes For		Withheld		Abstain		Votes For		Withheld		Abstain		Votes For		Withheld		Abstain

MEN		24,921,133		929,477		0		24,910,803		939,807		0		24,980,584		870,026		0
MHD		11,944,853		280,978		0		11,929,071		296,760		0		11,955,268		270,563		0
MUH		9,630,665		141,092		0		9,619,591		152,166		0		9,619,591		152,166		0
MUS		9,725,140		531,497		0		9,708,149		548,488		0		9,761,342		495,295		0
MUI		35,349,200		819,237		0		35,333,587		834,850		0		35,406,447		761,990		0
MVT		17,546,291		733,224		0		17,492,008		787,507		0		17,456,527		822,988		0


	Jerrold B. Harris						R. Glenn Hubbard						W. Carl Kester²

			Votes						Votes						Votes
	Votes For		Withheld		Abstain		Votes For		Withheld		Abstain		Votes For		Withheld		Abstain

MEN		24,928,511		922,099		0		24,978,023		872,587		0		1,558		437		0
MHD		11,932,978		292,853		0		11,933,612		292,219		0		969		479		0
MUH		9,619,591		152,166		0		9,618,106		153,651		0		600		15		354
MUS		9,711,365		545,272		0		9,758,033		498,604		0		903		67		403
MUI¹		35,384,449		783,988		0		35,322,859		845,578		0		1,983		330		0
MVT		17,515,731		763,784		0		17,475,859		803,656		0		1,190		249		454


	Karen P. Robards

			Votes
	Votes For		Withheld		Abstain

MEN		24,992,578		858,032		0
MHD		11,958,406		267,425		0
MUH		9,629,515		142,242		0
MUS		9,741,203		515,434		0
MUI		35,414,253		754,184		0
MVT		17,573,472		706,043		0


	¹	Due to the lack of a quorum of Preferred Shares, MUI was unable to act on the election of the two directors reserved for election solely by the Preferred Shareholders for the Fund. Accordingly, Frank J. Fabozzi and W. Carl Kester will remain in office and continue to serve as directors for the Fund.

	²	Voted on by the holders of Preferred Shares only.



SEMI-ANNUAL REPORT	OCTOBER 31, 2010	79

Additional Information (continued)

Dividend Policy

The Funds’ dividend policy is to distribute all or a portion of their net investment income to their shareholders on a monthly basis. In order to provide shareholders with a more stable level of dividend distributions, the Funds may at times pay out less than the entire amount of net investment income earned in any particular month and may at times, in any particular month, pay out such accumulated but undistributed income in addition to net investment income earned in that month. As a result, the dividends paid by the Funds for any particular month may be more or less than the amount of net investment income earned by the Funds during such month. The Funds’ current accumulated but undistributed net investment income, if any, is disclosed in the Statements of Assets and Liabilities, which comprises part of the financial information included in this report.

General Information

On June 10, 2010, the Manager announced that the directors of MUI had received a demand letter sent on behalf of certain of MUI Common Shareholders. The demand letter alleged that the Manager and MUI’s officers and Board of Directors (the “Board”) breached their fiduciary duties owed to MUI and its Common Shareholders by redeeming at par certain of MUI’s Preferred Shares, and demanded that the Board take action to remedy those alleged breaches. In response to the demand letter, the Board established a Demand Review Committee (the “Committee”) of the independent Directors to investigate the claims made in the demand letter with the assistance of independent counsel. Based upon its investigation, the Committee recommended that the Board reject the demand specified in the letter. After reviewing the findings of the Committee, the Board unanimously adopted the Committee’s recommendation and unanimously voted to reject the demand.

Electronic Delivery

Electronic copies of most financial reports are available on the Funds’ web-sites or shareholders can sign up for e-mail notifications of quarterly statements, annual and semi-annual reports by enrolling in the Funds’ electronic delivery program.

Shareholders Who Hold Accounts with Investment Advisors, Banks or Brokerages:

Please contact your financial advisor to enroll. Please note that not all investment advisors, banks or brokerages may offer this service.

Householding

The Funds will mail only one copy of shareholder documents, including annual and semi-annual reports and proxy statements, to shareholders with multiple accounts at the same address. This practice is commonly called “householding” and is intended to reduce expenses and eliminate duplicate mailings of shareholder documents. Mailings of your shareholder documents may be householded indefinitely unless you instruct us otherwise. If you do not want the mailing of these documents to be combined with those for other members of your household, please call (800) 441-7762.

Availability of Quarterly Portfolio Schedule of Investments

The Funds file their complete schedule of portfolio holdings with the Securities and Exchange Commission (“SEC”) for the first and third quarters of each fiscal year on Form N-Q. The Funds’ Forms N-Q are available on the SEC’s website at http://www.sec.gov and may also be reviewed and copied at the SEC’s Public Reference Room in Washington, DC. Information on the operation of the Public Reference Room may be obtained by calling (800) SEC-0330. Each Fund’s Forms N-Q may also be obtained upon request and without charge by calling (800) 441-7762.

Availability of Proxy Voting Policies and Procedures

A description of the policies and procedures that the Funds use to determine how to vote proxies relating to portfolio securities is available (1) without charge, upon request, by calling (800) 441-7762; (2) at http://www.blackrock.com; and (3) on the SEC’s website at http://www.sec.gov.

Availability of Proxy Voting Record

Information about how the Funds voted proxies relating to securities held in the Funds’ portfolios during the most recent 12-month period ended June 30 is available upon request and without charge (1) at http://www.blackrock.com or by calling (800) 441-7762 and (2) on the SEC’s website at http://www.sec.gov.

Availability of Fund Updates

BlackRock will update performance and certain other data for the Funds on a monthly basis on its website in the “Closed-end Funds” section of http://www.blackrock.com. Investors and others are advised to periodically check the website for updated performance information and the release of other material information about the Funds.



80	SEMI-ANNUAL REPORT	OCTOBER 31, 2010

Additional Information (continued)

BlackRock Privacy Principles

BlackRock is committed to maintaining the privacy of its current and former fund investors and individual clients (collectively, “Clients”) and to safeguarding their non-public personal information. The following information is provided to help you understand what personal information BlackRock collects, how we protect that information and why in certain cases we share such information with select parties.

If you are located in a jurisdiction where specific laws, rules or regulations require BlackRock to provide you with additional or different privacy-related rights beyond what is set forth below, then BlackRock will comply with those specific laws, rules or regulations.

BlackRock obtains or verifies personal non-public information from and about you from different sources, including the following: (i) information we receive from you or, if applicable, your financial intermediary, on applications, forms or other documents; (ii) information about your transactions with us, our affiliates, or others; (iii) information we receive from a consumer reporting agency; and (iv) from visits to our websites.

BlackRock does not sell or disclose to non-affiliated third parties any non-public personal information about its Clients, except as permitted by law or as is necessary to respond to regulatory requests or to service Client accounts. These non-affiliated third parties are required to protect the confidentiality and security of this information and to use it only for its intended purpose.

We may share information with our affiliates to service your account or to provide you with information about other BlackRock products or services that may be of interest to you. In addition, BlackRock restricts access to non-public personal information about its Clients to those BlackRock employees with a legitimate business need for the information. BlackRock maintains physical, electronic and procedural safeguards that are designed to protect the non-public personal information of its Clients, including procedures relating to the proper storage and disposal of such information.



SEMI-ANNUAL REPORT	OCTOBER 31, 2010	81

Additional Information (concluded)

Board Approval

On September 1, 2010, the Board of Directors (the “Boards”) of MEN and MUS (the “Funds”) approved changes to certain investment policies of the Funds.

Historically, under normal market conditions, each Fund has been required to invest at least 80% of its assets in municipal bonds either (i) insured under an insurance policy purchased by the Fund or (ii) insured under an insurance policy obtained by the issuer of the municipal bond or any other party. In September 2008, the Funds adopted an amended investment policy of purchasing only municipal bonds insured by insurance providers with claims-paying abilities rated investment grade at the time of investment (the “Insurance Investment Policy”).

Following the onset of the credit and liquidity crises, the claims-paying ability rating of most of the municipal bond insurance providers has been lowered by the rating agencies. These downgrades have called into question the long-term viability of the municipal bond insurance market, which has the potential to severely limit the ability of BlackRock Advisors, LLC, the Funds’ investment advisor (the “Manager”), to manage the Funds under the Insurance Investment Policy.

As a result, on September 1, 2010, the Manager recommended, and the Board approved, the removal of the Insurance Investment Policy. As a result of this investment policy change, the Funds will not be required to dispose of assets currently held within the Funds. The Funds will maintain, and have no current intention to amend, their investment policy of, under normal market conditions, generally investing in municipal obligations rated investment grade at the time of investment.

As each Fund increases the amount of its assets that are invested in municipal obligations that are not insured, each Fund’s shareholders will be exposed to the risk of the failure of such securities’ issuers to pay interest and repay principal and will not have the benefit of protection provided under municipal bond insurance policies. As a result, shareholders will be more dependent on the analytical ability of the Manager to evaluate the credit quality of issuers of municipal obligations in which each Fund invests. The Board believes that the amended investment policy is in the best interests of each Fund and its shareholders because it believes that the potential benefits from increased flexibility outweigh the potential increase in risk from the lack of insurance policies provided by weakened insurance providers. Of course, the new investment policy cannot assure that each Fund will achieve its investment objective.

As disclosed in each Fund’s prospectus, each Fund is required to provide shareholders 60 days notice of a change to the Insurance Investment Policy. Accordingly, a notice describing the changes discussed above was mailed to shareholders of record as of September 1, 2010. The new investment policy took effect on November 9, 2010.

After the amended policy takes effect, the Manager anticipates that it will gradually reposition each Fund’s portfolio over time, and that during such period, each Fund may continue to hold a substantial portion of its assets in insured municipal bonds. At this time, it is uncertain how long it may take to reposition each Fund’s portfolio once the amended policy takes effect, and the Funds may continue to be subject to risks associated with investing a substantial portion of their assets in insured municipal bonds until the repositioning is complete. No action is required by shareholders of the Funds in connection with this change.

On November 9, 2010, in connection with this change in non-fundamental policy, MUS changed its name from BlackRock MuniHoldings Insured Fund, Inc. to BlackRock MuniHoldings Quality Fund, Inc. The Fund will continue to trade on the New York Stock Exchange under its current ticker symbol.

The approved changes will not alter any Fund’s investment objective.



82	SEMI-ANNUAL REPORT	OCTOBER 31, 2010

This report is transmitted to shareholders only. It is not a prospectus. Past performance results shown in this report should not be considered a representation of future performance. Certain of the Funds have leveraged their Common Shares, which creates risks for Common Shareholders, including the likelihood of greater volatility of net asset value and market price of the Common Shares, and the risk that fluctuations in the short-term dividend rates of the Preferred Shares, currently set at the maximum reset rate as a result of failed auctions, may affect the yield to Common Shareholders. Statements and other information herein are as dated and are subject to change.




#CEMUN18-10/10

Item 2 –	Code of Ethics – Not Applicable to this semi-annual report

Item 3 –	Audit Committee Financial Expert – Not Applicable to this semi-annual report

Item 4 –	Principal Accountant Fees and Services – Not Applicable to this semi-annual report

Item 5 –	Audit Committee of Listed Registrants – Not Applicable to this semi-annual report

Item 6 –	Investments
	(a) The registrant’s Schedule of Investments is included as part of the Report to Stockholders filed under Item 1 of this form.
	(b) Not Applicable due to no such divestments during the semi-annual period covered since the previous Form N-CSR filing.

Item 7 –	Disclosure of Proxy Voting Policies and Procedures for Closed-End Management Investment Companies – Not Applicable to this semi-annual report

Item 8 –	Portfolio Managers of Closed-End Management Investment Companies – Not Applicable to this semi-annual report

Item 9 –	Purchases of Equity Securities by Closed-End Management Investment Company and Affiliated Purchasers – Not Applicable

Item 10 –	Submission of Matters to a Vote of Security Holders – On September 17, 2010, the Board of Directors of the Fund amended and restated in its entirety the bylaws of the Fund (the "Amended and Restated Bylaws"). The Amended and Restated Bylaws were deemed effective as of September 17, 2010 and set forth, among other things, the processes and procedures that shareholders of the Fund must follow, and specifies additional information that shareholders of the Fund must provide, when proposing director nominations at any annual meeting or special meeting in lieu of an annual meeting or other business to be considered at an annual meeting or special meeting.

Item 11 –	Controls and Procedures

11(a) –	The registrant’s principal executive and principal financial officers or persons performing similar functions have concluded that the registrant’s disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940, as amended (the “1940 Act”)) are effective as of a date within 90 days of the filing of this report based on the evaluation of these controls and procedures required by Rule 30a-3(b) under the 1940 Act and Rule 13a-15(b) under the Securities Exchange Act of 1934, as amended.

11(b) –	There were no changes in the registrant’s internal control over financial reporting (as defined in Rule 30a-3(d) under the 1940 Act) that occurred during the second fiscal quarter of the period covered by this report that have materially affected, or are reasonably likely to materially affect, the registrant’s internal control over financial reporting.

Item 12 –	Exhibits attached hereto

12(a)(1) –	Code of Ethics – Not Applicable to this semi-annual report

12(a)(2) –	Certifications – Attached hereto

12(a)(3) –	Not Applicable

12(b) –	Certifications – Attached hereto

	Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	BlackRock Muni Intermediate Duration Fund, Inc.

	By:	/s/ Anne F. Ackerley
		Anne F. Ackerley
		Chief Executive Officer (principal executive officer) of
		BlackRock Muni Intermediate Duration Fund, Inc.

	Date: December 22, 2010

	Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

	By:	/s/ Anne F. Ackerley
		Anne F. Ackerley
		Chief Executive Officer (principal executive officer) of
		BlackRock Muni Intermediate Duration Fund, Inc.

	Date: December 22, 2010

	By:	/s/ Neal J. Andrews
		Neal J. Andrews
		Chief Financial Officer (principal financial officer) of
		BlackRock Muni Intermediate Duration Fund, Inc.

	Date: December 22, 2010