U.S. markets and stock ETFs plunged Monday on growing fears of a worsening coronavirus epidemic that is spreading outside of China. On Monday, the Invesco QQQ Trust (NASDAQ: QQQ) decreased 3.7%, SPDR Dow Jones Industrial Average ETF (NYSEArca: DIA) fell 3.3% and SPDR S&P 500 ETF (NYSEArca: SPY)...