Chipotle Mexican Grill Inc., pummeled by E. coli and norovirus outbreaks this year, was the worst-performing stock in the restaurant index of the Standard & Poor’s 500 in 2015. Starbucks Corp., which used technology and a greater emphasis on food to drive growth, had the group’s best year.
Chipotle was the only one of the five stocks to lose ground, though Yum! Brands Inc. only barely broke into positive territory. That company is confronting a slowdown in China, where it plans to split off its operations into a separate business.
Even after Chipotle’s slide, the stock trades at more than 28 times its 12-month earnings per share -- more than 50 percent higher than the average S&P 500 company.