Starbucks Corporation (NASDAQ:SBUX) shares are trading higher after the company announced that Brian Niccol,CEO and Chairman of Chipotle Mexican Grill, Inc. (NYSE:CMG),has been hired as Starbucks’ new Chairman and Chief Executive Officer, effective September 9. Current CEO Laxman Narasimhan is stepping down from his role as CEO and as a director effective immediately, the company said. Starbucks Chief Financial Officer Rachel Ruggeri will serve as interim CEO until that time. Also Read: Starboard Value Has Taken A Stake In Starbucks Under Niccol’s leadership, Chipotle’s revenue has nearly doub…