Craig-Hallum analyst Brad Berning thinks the market has been overreacting to news of Amazon's (AMZN) deal to buy Whole Foods (WFM), which he sees as creating buying opportunities in shares of Blackhawk (HAWK), VeriFone (PAY) and First Data (FDC). On Blackhawk, he notes that the company sells gift cards for both and they are well positioned for the digital channel shift. On First Data, Berning notes that it co-processes Amazon's payments with Chase and he sees potential for Whole Foods to become a market share gainer. For Verifone, the analyst points out that Whole Foods uses its terminals and if Amazon plans to grow store count this could be a positive.