Notable Thursday Option Activity: ZIOP, CBOE, AXDX

Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in ZIOPHARM Oncology Inc (ZIOP), where a total volume of 9,101 contracts has been traded thus far today, a contract volume which is representative of approximately 910,100 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 49.6% of ZIOP's average daily trading volume over the past month, of 1.8 million shares..