American Express owns an asset-light business with huge brand value. That's a recipe for financial success. Despite the recent share-price spike, the stock remains a bargain across several metrics.

American Express (AXP) has outperformed most credit card stocks while presenting more upside for long-term investors, prompting me to be bullish. Rising profit margins, strong sales growth, and a ...

That's the same message that Benjamin Graham offers with his tale of Mr. Market. But Marks' big point is that the market rarely settles on the middle point of the pendulum between too expensive and ...