The Biggest Loser: Chipotle Tumbles 7.5%

Shares of Chipotle Mexican Grill ( CMG ) slumped to the bottom of the S&P 500 today after the company's management sounded less than optimistic about the state of its business . Shares of Chipotle Mexican Grill tumbled 7.5% to $$366.37 today, while the S&P 500 rose 0.3% to 2,212.23. CNBC's Sarah Whitten has the details about co-CEO Steve Ells' comments at an investor conference :