Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in HEICO Corp (HEI), where a total volume of 4,054 contracts has been traded thus far today, a contract volume which is representative of approximately 405,400 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 95.3% of HEI's average daily trading volume over the past month, of 425,615 shares..