3M Co (MMM) is overvalued and Otter Tail Corp (OTTR) is slightly undervalued.
Against our estimates of intrinsic value, OTTR trades at the wider discount: a margin of safety of +17%, against -94% for MMM.
Values as of the 22 Sept 2026 close.
Discounting its cash flows at 9.3% (average of 3 methods) values the shares at $87.07; the price of $169.30 is 94% above that value, and 74% of that value comes from beyond year five.
Leak Score 49/100 on 10 of 12 signals
Discounting its cash flows at 7.4% (average of 3 methods) values the shares at $108.73; the price of $90.23 is 17% below that value, and 82% of that value comes from beyond year five.
Leak Score 49/100 on 3 of 12 signals
| Metric | MMM | OTTR |
|---|---|---|
| Verdict | Overvalued | Slightly undervalued |
| Price | $169.30 | $90.23 |
| Intrinsic value | $87.07 | $108.73 |
| Margin of safety | -94% | +17% |
| Leak Score | 49/100 (10/12) | 49/100 (3/12) |
| Market cap | $87.3B | $3.8B |
| Revenue growth, 5 years | -5.0% | 7.9% |
| Operating margin | 20.9% | 24.6% |
| Net margin | 11.9% | 14.8% |
| Return on equity | 82.8% | 10.7% |
| Debt to equity | 4.46 | 0.67 |
| P/E | 30.1x | 19.5x |
| Forward P/E | 17.2x | 17.3x |
| P/B | 29.6x | 2.0x |
| Dividend yield | 1.9% | 2.5% |