Have you been paying attention to shares of Chipotle Mexican Grill (CMG) ? Shares have been on the move with the stock up 6% over the past month. The stock hit a new 52-week high of $3384.04 in the previous session. Chipotle Mexican Grill has gained 47.2% since the start of the year compared to the 12.1% move for the Zacks Retail-Wholesale sector and the -1.4% return for the Zacks Retail - Restaurants industry.What's Driving the Outperformance?The stock has an impressive record of positive earnings surprise ...