American Express (NYSE: AXP) just released fresh financials revealing that revenue (net of interest expense) and diluted earnings per share increased by 11% and 27%, respectively, year over year in the fourth quarter. While these headline figures missed Wall Street expectations, the stock was up more than 6% (as of the morning of Jan. 26) immediately following the news due to an upbeat forecast.

The momentum continues, as this top financial stock has doubled in the last five years. And if we zoom out over the last three decades, shares have skyrocketed 2,390%, crushing the broader S&P 500 index.

Can American Express be a millionaire-maker? Let's take a closer look at the business.

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Source Fool.com