Chipotle Mexican Grill, Inc. (NYSE:CMG) shot up 7% Friday, crossing the $400 mark after posting stronger than expected second quarter earnings, The Street reports. Chipotle Mexican Grill, Inc. (NYSE:CMG) released its earnings after the market closed on Thursday, showing a 7.6 percent year-on-year increase in net income and an EPS increase of 10.2 percent. Revenue was up 18.6 percent over the same period, which the company attributes to the opening of 92 new restaurants since the start of the year. Restaurant sales were also up 5.5 percent, also contributing to the company’s success. Chipotle Stable On Food Price And Costs…