Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Roblox Corp (RBLX), where a total volume of 35,583 contracts has been traded thus far today, a contract volume which is representative of approximately 3.6 million underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 53.7% of RBLX's average daily trading volume over the past month, of 6.6 million shares..