Valued at a market cap of $249.8 billion, American Express Company (AXP) is an integrated payments company based in New York. It is best known for its premium charge cards and credit cards, offering payment, expense management, and travel-related services to consumers, small businesses, and large enterprises. Companies worth$200 billion or more are typically classified as “mega-cap stocks,” and AXP fits the label perfectly, with its market cap exceeding this threshold, underscoring its size, influence, a ...