Notable Friday Option Activity: ACOR, DE, HRTX

Among the underlying components of the Russell 3000 index, we saw noteworthy options trading volume today in Acorda Therapeutics Inc (ACOR), where a total of 3,975 contracts have traded so far, representing approximately 397,500 underlying shares. That amounts to about 41.4% of ACOR's average daily trading volume over the past month of 959,970 shares..