Chipotle sales fall short despite free food; stock off 3 percent

Chipotle Mexican Grill Inc's free food giveaways aimed at luring back diners after a string of food safety lapses last year failed to revive sales as much as Wall Street expected during the first quarter and its stock fell almost 3 percent. Shares in the burrito chain have lost about one-third of their value since food safety woes surfaced with news it had closed dozens of restaurants in the Pacific Northwest due to an E. coli outbreak. Its net loss of $26.4 million, or 88 cents per share, was l