Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Unity Software Inc (U), where a total volume of 68,437 contracts has been traded thus far today, a contract volume which is representative of approximately 6.8 million underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 68.9% of U's average daily trading volume over the past month, of 9.9 million shares..