Chipotle Mexican Grill’s future may not be as bumpy as some shareholders fear upon the departure of CEO Brian Niccol, investors said.The burrito chain lost almost $6 billion in stock market value on Tuesday after it announced that Niccol will depart at the end of this month to become CEO of Starbucks. But Chipotle’s chief operating officer, Scott Boatwright, will serve as its interim CEO, and some investors said he will provide a steady hand. 3 Bill Ackman said Chipotle is in good hands with the team put ...