Masco Corp (MAS) is slightly overvalued and Owens Corning (OC) is undervalued.
Against our estimates of intrinsic value, OC trades at the wider discount: a margin of safety of +37%, against -15% for MAS.
Values as of the 22 Sept 2026 close.
Discounting its cash flows at 9.8% (average of 3 methods) values the shares at $60.63; the price of $69.96 is 15% above that value, and 73% of that value comes from beyond year five.
Leak Score 44/100 on 2 of 12 signals
Discounting its cash flows at 9.0% (average of 2 methods) values the shares at $200.21; the price of $126.66 is 37% below that value, and 76% of that value comes from beyond year five.
Leak Score 56/100 on 2 of 12 signals
| Metric | MAS | OC |
|---|---|---|
| Verdict | Slightly overvalued | Undervalued |
| Price | $69.96 | $126.66 |
| Intrinsic value | $60.63 | $200.21 |
| Margin of safety | -15% | +37% |
| Leak Score | 44/100 (2/12) | 56/100 (2/12) |
| Market cap | $13.8B | $10.0B |
| Revenue growth, 5 years | 1.0% | 7.4% |
| Operating margin | 17.7% | 14.9% |
| Net margin | 11.6% | -6.8% |
| Return on equity | — | -9.6% |
| Debt to equity | — | 1.52 |
| P/E | 16.1x | — |
| Forward P/E | 15.0x | 10.6x |
| P/B | — | 2.6x |
| Dividend yield | 1.8% | 2.4% |