Chipotle earnings

Is Chipotle Losing its Sizzle?

Chipotle Mexican Grill, the country's favorite quick-service chain, posted its quarterly results on Tuesday, and as respectable as its revenue growth might appear, there are some unappetizing trends hiding at the bottom of its bowl.

5 Winners and Losers of the Week in Business

From a fast-growing burrito roller coming undone to an educational electronics toy maker topping a holiday sales list, here's a rundown of this week's star performers and biggest losers in the business world.