Key Points American Express is a payment processing company with an iconic name. The company's customer base tends to be wealthier and financially resilient. American Express' stock, long owned by Warren Buffett's Berkshire Hathaway, is near all-time highs. 10 stocks we like better than American Express › American Express (NYSE: AXP) is a very well-positioned business. It has a very famous supporter in Warren Buffett, the legendary investor and chief executive officer of Berkshire Hathaway (NYSE: ...