American Express Stock Soared 467% in 10 Years: Is It Still a Buy?

Since May 2016, American Express (AXP) has delivered a staggering total return of 467%, according to Motley Fool data. This performance has made it one of the top holdings in Warren Buffett's portfolio, which still holds a significant stake. But the key question remains: Is AXP still undervalued, or has the premium card narrative been fully priced in?

Long-Term Stock Performance

Since May 2016, American Express has vastly outperformed the S&P 500. The 467% total return includes dividend reinvestment, reflecting the strength of its business model in the payments and financial services sector.

Key Growth Drivers

• Premium Customer Base: American Express's focus on high-spending cardholders provides stable revenue streams.
• Digital Transformation: Investments in technology and digital services have enhanced customer loyalty.
• International Expansion: Strong growth in emerging markets, particularly in Asia.

Is the Stock Overvalued?

With the stock near all-time highs, the P/E ratio has expanded to around 20x, above its historical average. Some analysts see the stock as still attractive given expected earnings growth, while others warn that high valuations limit future upside.

What This Means for Investors

American Express is a high-quality company with a clear competitive advantage. However, new investors should weigh business quality against current valuation. The stock may suit long-term investors but could experience short-term volatility.