Chipotle's stock split is set for later this month.One stock that has arguably been overdue for a stock split is Chipotle Mexican Grill (CMG 2.24%). Trading at roughly $3,089 per share, its price tag is among the highest you'll find in the S&P 500. While it can be difficult to predict if and when a company will split its shares, it's a move that can make sense when a share price reaches this level. At a lower price point, investors don't need to buy fractional shares, and thus, it becomes accessible to a wi ...