Notable Thursday Option Activity: VLO, PLTR, RCL

Looking at options trading activity among components of the S&P 500 index, there is noteworthy activity today in Valero Energy Corp (VLO), where a total volume of 18,722 contracts has been traded thus far today, a contract volume which is representative of approximately 1.9 million underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 56.2% of VLO's average daily trading volume over the past month, of 3.3 million shares..