Notable Friday Option Activity: ISRG, GRMN, C
December 07, 2018 at 13:17 PM EST
Looking at options trading activity among components of the S&P 500 index, there is noteworthy activity today in Intuitive Surgical Inc (ISRG), where a total volume of 4,023 contracts has been traded thus far today, a contract volume which is representative of approximately 402,300 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 50.8% of ISRG's average daily trading volume over the past month, of 791,420 shares..