Restaurant company Chipotle Mexican Grill (NYSE:CMG) will complete a 50-for-1 stock split after the market closes on Tuesday, with shares trading at a new split-adjusted price to open Wednesday's trading session. The development comes about a week after the $88-billion burrito chain enjoyed the title of most valuable company in the world. On Companiesmarketcap.com, Chipotle briefly listed at $4.428 trillion — likely an error in calculating the current value multiplied by 50. On the site, Chipotle is shown as moving up 187 places and passing the three largest companies: Microsoft Corporation (NASDAQ:MSFT): $3.33 trillion Apple Inc (NASDAQ: