AutoZone's (NYSE: AZO) chief rival, O'Reilly Automotive, just issued a 15-for-1 stock split, and AutoZone looks like a great candidate for one next year as well. The seller of aftermarket auto parts now trades north of $3,600 per share, making it one of the highest share prices on the stock market. AutoZone has a long track record of growth and performing well in both bull and bear markets. After tripling over the last five years, the stock seems overdue for a stock split.