Owens Corning (OC) is undervalued and Trane Technologies plc (TT) is overvalued.
Against our estimates of intrinsic value, OC trades at the wider discount: a margin of safety of +37%, against -69% for TT.
Values as of the 22 Sept 2026 close.
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
Discounting its cash flows at 10.3% (average of 3 methods) values the shares at $259.71; the price of $437.82 is 69% above that value, and 72% of that value comes from beyond year five.
Leak Score 59/100 on 3 of 12 signals
| Metric | OC | TT |
|---|---|---|
| Verdict | Undervalued | Overvalued |
| Price | $126.66 | $437.82 |
| Intrinsic value | $200.21 | $259.71 |
| Margin of safety | +37% | -69% |
| Leak Score | 56/100 (2/12) | 59/100 (3/12) |
| Market cap | $10.0B | $96.3B |
| Revenue growth, 5 years | 7.4% | 11.3% |
| Operating margin | 14.9% | 18.1% |
| Net margin | -6.8% | 13.3% |
| Return on equity | -9.6% | 36.5% |
| Debt to equity | 1.52 | 0.54 |
| P/E | — | 33.2x |
| Forward P/E | 10.6x | 24.9x |
| P/B | 2.6x | 11.2x |
| Dividend yield | 2.4% | 0.9% |