Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Centene Corp (Symbol: CNC), where a total volume of 109,478 contracts has been traded thus far today, a contract volume which is representative of approximately 10.9 million underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 80.6% of CNC's average daily trading volume over the past month, of 13.6 million shares. Especially high volume w ...