Noteworthy Thursday Option Activity: APC, X, TTD

Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Anadarko Petroleum Corp (APC), where a total volume of 25,491 contracts has been traded thus far today, a contract volume which is representative of approximately 2.5 million underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 65.5% of APC's average daily trading volume over the past month, of 3.9 million shares..