Looking at options trading activity among components of the S&P 500 index, there is noteworthy activity today in AbbVie Inc (ABBV), where a total volume of 120,551 contracts has been traded thus far today, a contract volume which is representative of approximately 12.1 million underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 154.9% of ABBV's average daily trading volume over the past month, of 7.8 million shares..