Noteworthy Monday Option Activity: UNP, DLTR, HAL

Looking at options trading activity among components of the S&P 500 index, there is noteworthy activity today in Union Pacific Corp (UNP), where a total volume of 56,426 contracts has been traded thus far today, a contract volume which is representative of approximately 5.6 million underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 137.6% of UNP's average daily trading volume over the past month, of 4.1 million shares..