Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Modine Manufacturing Co (MOD), where a total volume of 4,493 contracts has been traded thus far today, a contract volume which is representative of approximately 449,300 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 84% of MOD's average daily trading volume over the past month, of 534,600 shares..