Notable Thursday Option Activity: MGNX, TGT, IP

Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in MacroGenics, Inc (MGNX), where a total volume of 6,380 contracts has been traded thus far today, a contract volume which is representative of approximately 638,000 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 45.4% of MGNX's average daily trading volume over the past month, of 1.4 million shares..