Notable Wednesday Option Activity: ANAB, TREE, NTAP

Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in AnaptysBio Inc (ANAB), where a total volume of 1,393 contracts has been traded thus far today, a contract volume which is representative of approximately 139,300 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 46.9% of ANAB's average daily trading volume over the past month, of 297,020 shares..