Noteworthy Wednesday Option Activity: COST, R, MSFT

Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Costco Wholesale Corp (COST), where a total volume of 26,791 contracts has been traded thus far today, a contract volume which is representative of approximately 2.7 million underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 104.8% of COST's average daily trading volume over the past month, of 2.6 million shares..