Some analysts said tougher comparisons, harsher weather and holiday timing may have put pressure on the fast-casual chain’s recent sales.

Chipotle stock plunged in aftermarket trading after the fast-casual restaurant chain posted solid earnings but its quarterly revenues were lower than what analysts had expected. For the three months ended in December,

Chipotle Mexican Grill's stock has climbed 17% over the past year. The burrito chain announced Scott Boatwright as its permanent CEO in November. The company has outpaced the broader restaurant industry over the past year.