American Express: Strong Market Position and Growth Potential Justify Buy RatingWe believe Amex holds a leadership position within the premium card market (note), and management is committed to growing EPS at a sustainable midteens clip over time. We reiterate our Outperform rating. We are raising our 2025 and 2026 EPS estimates; AXP shares trade at 20.2 times our 2026 EPS estimate, representing a 9% discount to the S&P 500, which we view as unwarranted given above-market top- and bottom-line growth, industry-leading credit quality, and strong ROE—averaging 27% (10 percentage points better than the S&P 500) since 2004. Under the leadership of Squeri (since 2018), Amex has narrowed its focus to premium consumers and SMEs, has expanded its acceptance network, and remains keenly focused on improving its value proposition. These efforts have helped increase customer engagement and accelerate growth, both of which should drive shareholder value.