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A steak burrito is arranged for a photograph with a drink and bags of chips at a Chipotle Mexican Grill Inc. restaurant in Hollywood, California, U.S., on Tuesday, July 16, 2013. Chipotle Mexican Grill Inc. is scheduled to release earnings data on July 18. Photographer: Patrick T. Fallon/Bloomberg via Getty Images

A steak burrito is arranged for a photograph with a drink and bags of chips at a Chipotle Mexican Grill Inc. restaurant in Hollywood, California, U.S., on Tuesday, July 16, 2013. Chipotle Mexican Grill Inc. is scheduled to release earnings data on July 18. Photographer: Patrick T. Fallon/Bloomberg via Getty Images

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MIAMI, FL - APRIL 27: Chipotle restaurant workers fill orders for customers on the day that the company announced it will only use non-GMO ingredients in its food on April 27, 2015 in Miami, Florida. The company announced, that the Denver-based chain would not use the GMO's, which is an organism whose genome has been altered via genetic engineering in the food served at Chipotle Mexican Grills. (Photo by Joe Raedle/Getty Images)

MIAMI, FL - APRIL 27:  Chipotle restaurant workers fill orders for customers on the day that the company announced it will only use non-GMO ingredients in its food on April 27, 2015 in Miami, Florida.  The company announced, that the Denver-based chain would not use the GMO's, which is an organism whose genome has been altered via genetic engineering in the food served at Chipotle Mexican Grills.  (Photo by Joe Raedle/Getty Images)

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MIAMI, FL - APRIL 27: Chipotle restaurant workers fill orders for customers on the day that the company announced it will only use non-GMO ingredients in its food on April 27, 2015 in Miami, Florida. The company announced, that the Denver-based chain would not use the GMO's, which is an organism whose genome has been altered via genetic engineering in the food served at Chipotle Mexican Grills. (Photo by Joe Raedle/Getty Images)

MIAMI, FL - APRIL 27:  Chipotle restaurant workers fill orders for customers on the day that the company announced it will only use non-GMO ingredients in its food on April 27, 2015 in Miami, Florida.  The company announced, that the Denver-based chain would not use the GMO's, which is an organism whose genome has been altered via genetic engineering in the food served at Chipotle Mexican Grills.  (Photo by Joe Raedle/Getty Images)

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CHICAGO, IL - OCTOBER 25: A sign marks the location of a Chipotle restaurant on October 25, 2017 in Chicago, Illinois. Chipotle stock fell more than 14 percent today after a weak 3Q earnings . (Photo by Scott Olson/Getty Images)

CHICAGO, IL - OCTOBER 25:  A sign marks the location of a Chipotle restaurant on October 25, 2017 in Chicago, Illinois. Chipotle stock fell more than 14 percent today after a weak 3Q earnings .  (Photo by Scott Olson/Getty Images)