In the last decade, the Nasdaq Composite has been very good to investors. The tech-heavy benchmark returned 310% during this time, including dividends. But there's a retail stock in the index that has performed significantly better. I'm talking about O'Reilly Automotive (ORLY -0.18%). Shares of the aftermarket auto parts seller have soared 619% since Feb. 27, 2014, turning a $10,000 initial cash outlay into a whopping $71,880 today. Is it time to buy this phenomenal stock right now?Boring is bestHigh-flying ...