Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Upstart Holdings Inc (UPST), where a total volume of 44,274 contracts has been traded thus far today, a contract volume which is representative of approximately 4.4 million underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 66% of UPST's average daily trading volume over the past month, of 6.7 million shares..