Burrito maker Chipotle Mexican Grill (NYSE: CMG) is scheduled to report its fourth-quarter results after the market closes today. "The improvement was driven primarily by leverage from comparable restaurant sales including menu price increases, partially offset by wage inflation and higher costs associated with beef and freight," said management in the company's third-quarter earnings release. With Chipotle chief financial officer John Hartung saying in the company's third-quarter earnings call that beef and freight costs continued to worsen after the third quarter, it wouldn't be surprising to see this metric contract some sequentially in Q4.