Is the Market Underrating American Express's Growth Runway?

American Express stock has underperformed its competitors and major indexes this year, down 6% YTD while Visa is up 6% and Mastercard is flat. However, the article argues the stock may be underrated based on strong Q2 earnings (revenue +10% YoY, EPS beat), raised revenue guidance to 10% growth, and projected 14% earnings growth for 2026. Concerns about higher operating expenses are offset by CEO commentary on necessary investments in customer acquisition and long-term growth. Trading at 20x earnings with a long growth runway, American Express is positioned as an underrated buy.