Notable Monday Option Activity: WMB, FLR, EFX

Looking at options trading activity among components of the S&P 500 index, there is noteworthy activity today in Williams Cos Inc (WMB), where a total volume of 49,310 contracts has been traded thus far today, a contract volume which is representative of approximately 4.9 million underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 113.4% of WMB's average daily trading volume over the past month, of 4.3 million shares..