Notable Thursday Option Activity: ALXN, WYN, MON
March 15, 2018 at 14:48 PM EDT
Looking at options trading activity among components of the S&P 500 index, there is noteworthy activity today in Alexion Pharmaceuticals Inc. (ALXN), where a total volume of 24,228 contracts has been traded thus far today, a contract volume which is representative of approximately 2.4 million underlying shares (given that every 1 contract represents 100 underlying shares)..