Noteworthy Monday Option Activity: ALKS, BIIB, CASA

Among the underlying components of the Russell 3000 index, we saw noteworthy options trading volume today in Alkermes plc (ALKS), where a total of 7,525 contracts have traded so far, representing approximately 752,500 underlying shares. That amounts to about 69.6% of ALKS's average daily trading volume over the past month of 1.1 million shares..