Investors are cheering Chipotle Mexican Grill's (CMG -0.79%) stock following the announcement of its 50-for-1 stock split. The stock rose 4% in the following trading session, a possible sign of further interest in the stock.However, the likelihood of this split fundamentally helping Chipotle shareholders is low due to the actual effects of such a move. Instead, investors should look to the core business factors that drove Chipotle higher over the last 18 years rather than this latest milestone.Chipotle and ...