Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Cal-Maine Foods Inc (CALM), where a total volume of 3,388 contracts has been traded thus far today, a contract volume which is representative of approximately 338,800 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 45.8% of CALM's average daily trading volume over the past month, of 739,355 shares..