Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Encompass Health Corp (EHC), where a total volume of 3,960 contracts has been traded thus far today, a contract volume which is representative of approximately 396,000 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 47.8% of EHC's average daily trading volume over the past month, of 828,115 shares..