Is Mastercard a Millionaire Maker?

If history is any indication, this business should reward patient investors over the long haul.There haven't been many stocks that have performed better than Mastercard (MA 0.33%) in recent memory. Since its initial public offering in May 2006, the credit card payment processor's shares have skyrocketed 9,670% (as of May 6), crushing both the S&P 500 and the Nasdaq Composite Index.Now, with a market cap of $418 billion, this financial stock has certainly made its early shareholders wealthy beyond their wild ...