Past returns don't guarantee future results, but this company has proven its worth.The S&P 500 has climbed at a solid clip in recent years. Since November 2014, the index has generated a total return of 253% (about 13.2% annualized per year), which is above its typical annualized gain of roughly 10%.There's one unstoppable stock, though, that has crushed the broader market in the past decade, rising an impressive 581% during that time (as of Nov. 11). This would have turned a $10,000 investment into $68,000 ...