American Express Co (AXP) is overvalued and Capital One Financial Corp (COF) is slightly overvalued.
Both trade above our estimate of their intrinsic value. COF is the closer of the two: -15%, against -88% for AXP.
Values as of the 22 Sept 2026 close.
Book value at 2.50x, the multiple a 34.1% return on equity justifies, blended with earnings, values the shares at $162.37; the price of $305.07 is 88% above that value.
Leak Score 75/100 on 10 of 12 signals
Book value at 0.84x, the multiple a 8.9% return on equity justifies, blended with earnings, values the shares at $174.43; the price of $200.55 is 15% above that value.
Leak Score 55/100 on 10 of 12 signals
| Metric | AXP | COF |
|---|---|---|
| Verdict | Overvalued | Slightly overvalued |
| Price | $305.07 | $200.55 |
| Intrinsic value | $162.37 | $174.43 |
| Margin of safety | -88% | -15% |
| Leak Score | 75/100 (10/12) | 55/100 (10/12) |
| Market cap | $206.0B | $123.0B |
| Revenue growth, 5 years | 16.1% | 16.9% |
| Operating margin | 20.9% | 16.6% |
| Net margin | 13.4% | 12.9% |
| Return on equity | 34.1% | 8.9% |
| Debt to equity | 1.72 | 0.40 |
| P/E | 18.5x | 12.4x |
| Forward P/E | 15.1x | 8.4x |
| P/B | 6.0x | 1.1x |
| Dividend yield | 1.3% | 1.6% |