Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in CommVault Systems Inc (CVLT), where a total volume of 1,953 contracts has been traded thus far today, a contract volume which is representative of approximately 195,300 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 59% of CVLT's average daily trading volume over the past month, of 331,230 shares..