Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in MSCI Inc (MSCI), where a total volume of 1,916 contracts has been traded thus far today, a contract volume which is representative of approximately 191,600 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 48.6% of MSCI's average daily trading volume over the past month, of 393,900 shares..