Notable Monday Option Activity: CAL, UPST, SIGA

Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Caleres Inc (CAL), where a total volume of 2,938 contracts has been traded thus far today, a contract volume which is representative of approximately 293,800 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 60.5% of CAL's average daily trading volume over the past month, of 485,490 shares..