Noteworthy Friday Option Activity: GKOS, NU, XPO

Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Glaukos Corp (GKOS), where a total volume of 3,577 contracts has been traded thus far today, a contract volume which is representative of approximately 357,700 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 66% of GKOS's average daily trading volume over the past month, of 542,090 shares..