Whole Foods Market Inc.’s plan to return to one chief from a dual CEO setup the past six years raises fresh questions about its future strategy to battle a slump in sales. The struggling grocery chain said late Wednesday that co-founder John Mackey will be the sole chief executive starting in January, as co-Chief Executive Walter Robb steps down to streamline top management. “When business is going great, there aren’t a lot...

Source: Wall Street Journal November 03, 2016 18:25 UTC