Looking at options trading activity among components of the S&P 500 index, there is noteworthy activity today in TJX Companies (TJX), where a total volume of 39,687 contracts has been traded thus far today, a contract volume which is representative of approximately 4.0 million underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 84.5% of TJX's average daily trading volume over the past month, of 4.7 million shares..