Notable Wednesday Option Activity: BCEL, TROX, UNP

Among the underlying components of the Russell 3000 index, we saw noteworthy options trading volume today in Atreca Inc (BCEL), where a total of 1,336 contracts have traded so far, representing approximately 133,600 underlying shares. That amounts to about 69.3% of BCEL's average daily trading volume over the past month of 192,920 shares..