Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in WD-40 Co (WDFC), where a total volume of 681 contracts has been traded thus far today, a contract volume which is representative of approximately 68,100 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 50.9% of WDFC's average daily trading volume over the past month, of 133,840 shares..