U.S. stock futures hold modest gains By: MarketWatch August 07, 2012 at 06:30 AM EDT U.S. stock index futures drift higher as investors look ahead to earnings reports from a handful of corporate heavyweights amid a dearth of fresh economic data. Read More >> Related Stocks: Best Buy CVS Health Corp Cablevision Systems Molson Coors Brewing Standard Chartered Plc Walt Disney