Chipotle Mexican Grill disclosed a data breach last week erasing some of the stock’s after-hours rally as the restaurant reported a sharp rise in sales at its restaurants following food safety lapses in 2015 that drove away customers.
Chipotle shares leaped 7 percent in extended trading after first-quarter profit also blew past Wall Street's target. But shares retreated when Chief Financial Officer Jack Hartung told analysts the chain was investigating "unauthorized activity" in its payment system from late March through mid-April.
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