Notable Wednesday Option Activity: BLK, ALGN, CORT
January 16, 2019 at 15:24 PM EST
Among the underlying components of the Russell 3000 index, we saw noteworthy options trading volume today in Blackrock Inc (BLK), where a total of 3,846 contracts have traded so far, representing approximately 384,600 underlying shares. That amounts to about 46.8% of BLK's average daily trading volume over the past month of 821,295 shares..
