It's hard to find many better-performing stocks than this one.In the past two decades, the S&P 500 (^GSPC 0.41%) has generated a total return of 661%. That annualized gain of about 10.7% means that a $10,000 cash outlay would be worth $76,110 right now. This is a result that any investor would be pleased with.But there's one monster stock that turned a $10,000 initial investment 20 years ago into nearly $5.6 million today. Here's what investors need to know about this dominant industry-leading enterprise.Lo ...