Noteworthy Monday Option Activity: SD, MDC, NSTG

Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in SandRidge Energy Inc (SD), where a total volume of 2,575 contracts has been traded thus far today, a contract volume which is representative of approximately 257,500 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 62.7% of SD's average daily trading volume over the past month, of 410,755 shares..