Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Owens Corning (OC), where a total volume of 8,465 contracts has been traded thus far today, a contract volume which is representative of approximately 846,500 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 53.8% of OC's average daily trading volume over the past month, of 1.6 million shares..