Looking at options trading activity among components of the S&P 500 index, there is noteworthy activity today in Verisign Inc (VRSN), where a total volume of 7,993 contracts has been traded thus far today, a contract volume which is representative of approximately 799,300 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 123.5% of VRSN's average daily trading volume over the past month, of 647,095 shares..