Notable Monday Option Activity: BIIB, MSFT, KSU
May 24, 2021 at 14:16 PM EDT
Looking at options trading activity among components of the S&P 500 index, there is noteworthy activity today in Biogen Inc (BIIB), where a total volume of 5,198 contracts has been traded thus far today, a contract volume which is representative of approximately 519,800 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 58.4% of BIIB's average daily trading volume over the past month, of 890,305 shares..