Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Block Inc (SQ), where a total volume of 86,429 contracts has been traded thus far today, a contract volume which is representative of approximately 8.6 million underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 78.4% of SQ's average daily trading volume over the past month, of 11.0 million shares..