Notable Thursday Option Activity: ALLY, RYTM, CACI

Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Ally Financial Inc (ALLY), where a total volume of 16,160 contracts has been traded thus far today, a contract volume which is representative of approximately 1.6 million underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 47.7% of ALLY's average daily trading volume over the past month, of 3.4 million shares..