Notable Thursday Option Activity: BLK, PG, QRVO
July 30, 2015 at 14:48 PM EDT
Among the underlying components of the S&P 500 index, we saw noteworthy options trading volume today in BLK (BLK), where a total of 4,878 contracts have traded so far, representing approximately 487,800 underlying shares. That amounts to about 64.6% of BLK's average daily trading volume over the past month of 755,240 shares..