Notable Tuesday Option Activity: ATNX, AMBC, GATX

Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Athenex Inc (ATNX), where a total volume of 7,055 contracts has been traded thus far today, a contract volume which is representative of approximately 705,500 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 71.8% of ATNX's average daily trading volume over the past month, of 982,470 shares..