The Winner In An Amazon-Whole Foods Deal? Blackhawk Network By: Benzinga via Benzinga June 28, 2017 at 15:18 PM EDT Shares of Blackhawk Network Holdings Inc (NASDAQ: HAWK), a provider of prepaid payment networks, gained over 6 percent Wednesday after ... Read More >> Related Stocks: Amazon.com Bio-Techne Corp Blackhawk Network Holdings, Inc. - Common Stock Kroger Co Whole Foods Market