These elite enterprises could help you grow richer.Investors love stock splits. Although they don't change the fundamental value of a business -- they simply divide its profits among a larger number of shares -- stock splits are regarded as a powerful signal from a company's leadership team that good times are ahead.This certainly appears to be the case for two of the stock market's best-performing stocks, both of which remain strong buys today.Stock-split stock to buy No. 1: Chipotle Mexican GrillProven bu ...