Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in TransUnion (TRU), where a total volume of 8,241 contracts has been traded thus far today, a contract volume which is representative of approximately 824,100 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 58.3% of TRU's average daily trading volume over the past month, of 1.4 million shares..