ATI Inc (ATI) is overvalued and Proto Labs Inc (PRLB) is overvalued.
Both trade above our estimate of their intrinsic value. ATI is the closer of the two: -228%, against -299% for PRLB.
Values as of the 22 Sept 2026 close.
Discounting its cash flows at 9.7% (average of 3 methods) values the shares at $56.85; the price of $186.56 is 228% above that value, and 74% of that value comes from beyond year five.
Leak Score 69/100 on 10 of 12 signals
Discounting its cash flows at 11.4% (average of 3 methods) values the shares at $22.44; the price of $89.46 is 299% above that value, and 68% of that value comes from beyond year five.
Leak Score 0/100 on 2 of 12 signals
| Metric | ATI | PRLB |
|---|---|---|
| Verdict | Overvalued | Overvalued |
| Price | $186.56 | $89.46 |
| Intrinsic value | $56.85 | $22.44 |
| Margin of safety | -228% | -299% |
| Leak Score | 69/100 (10/12) | 0/100 (2/12) |
| Market cap | $25.4B | $2.1B |
| Revenue growth, 5 years | 9.0% | 4.2% |
| Operating margin | 16.0% | 7.3% |
| Net margin | 10.1% | 5.4% |
| Return on equity | 26.3% | 4.5% |
| Debt to equity | 1.17 | 0.00 |
| P/E | 54.5x | 71.3x |
| Forward P/E | 29.8x | 37.5x |
| P/B | 13.5x | 3.1x |