Notable Thursday Option Activity: SFG, ENOC, EXAM

Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in StanCorp Financial Group Inc (SFG), where a total volume of 2,500 contracts has been traded thus far today, a contract volume which is representative of approximately 250,000 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 128.6% of SFG's average daily trading volume over the past month, of 194,335 shares..