Notable Wednesday Option Activity: IMPV, GOOGL, CKH

Among the underlying components of the Russell 3000 index, we saw noteworthy options trading volume today in Imperva Inc. (NYSE: IMPV), where a total of 9,023 contracts have traded so far, representing approximately 902,300 underlying shares. That amounts to about 95% of IMPV's average daily trading volume over the past month of 949,450 shares. Especially high volume was seen for the $50 strike call option expiring September 16, 2016, with 2,364 contracts trading so far today, representing appro...