Berkshire Hathaway Inc (BRK-A) is slightly undervalued and Sun Life Financial Inc (SLF) is overvalued.
Against our estimates of intrinsic value, BRK-A trades at the wider discount: a margin of safety of +11%, against -50% for SLF.
Values as of the 22 Sept 2026 close.
Book value at 1.64x, the multiple a 12.1% return on equity justifies, blended with earnings, values the shares at $845738.46; the price of $755649.12 is 11% below that value.
Leak Score 55/100 on 10 of 12 signals
Book value at 1.60x, the multiple a 13.6% return on equity justifies, blended with earnings, values the shares at $53.84; the price of $80.71 is 50% above that value.
Leak Score 27/100 on 3 of 12 signals
| Metric | BRK-A | SLF |
|---|---|---|
| Verdict | Slightly undervalued | Overvalued |
| Price | $755649.12 | $80.71 |
| Intrinsic value | $845738.46 | $53.84 |
| Margin of safety | +11% | -50% |
| Leak Score | 55/100 (10/12) | 27/100 (3/12) |
| Market cap | $970.4B | $44.9B |
| Revenue growth, 5 years | 8.6% | -2.1% |
| Operating margin | 16.3% | 11.6% |
| Net margin | 22.3% | 7.5% |
| Return on equity | 12.1% | 13.6% |
| Debt to equity | 0.17 | 0.35 |
| P/E | 12.7x | 18.9x |
| Forward P/E | 22.7x | 13.0x |
| P/B | 1.4x | 2.7x |
| Dividend yield | — | 3.4% |