Notable Wednesday Option Activity: ISRG, IBM, GOOGL

Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Intuitive Surgical Inc (ISRG), where a total volume of 22,513 contracts has been traded thus far today, a contract volume which is representative of approximately 2.3 million underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 496.3% of ISRG's average daily trading volume over the past month, of 453,585 shares..