Notable Tuesday Option Activity: PXD, FB, PYPL

Looking at options trading activity among components of the S&P 500 index, there is noteworthy activity today in Pioneer Natural Resources Co (PXD), where a total volume of 7,277 contracts has been traded thus far today, a contract volume which is representative of approximately 727,700 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 56.1% of PXD's average daily trading volume over the past month, of 1.3 million shares..