Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Zoom Video Communications Inc (ZM), where a total volume of 18,605 contracts has been traded thus far today, a contract volume which is representative of approximately 1.9 million underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 72.8% of ZM's average daily trading volume over the past month, of 2.6 million shares..