Ferrovial N. V (FER) is overvalued and Mastec Inc (MTZ) is slightly undervalued.
Against our estimates of intrinsic value, MTZ trades at the wider discount: a margin of safety of +8%, against -256% for FER.
Values as of the 22 Sept 2026 close.
Discounting its cash flows at 7.5% (average of 3 methods) values the shares at $15.80; the price of $56.30 is 256% above that value, and 81% of that value comes from beyond year five.
Leak Score 14/100 on 3 of 12 signals
Discounting its cash flows at 12.4% (average of 3 methods) values the shares at $240.05; the price of $221.69 is 8% below that value, and 67% of that value comes from beyond year five.
Leak Score 41/100 on 9 of 12 signals
| Metric | FER | MTZ |
|---|---|---|
| Verdict | Overvalued | Slightly undervalued |
| Price | $56.30 | $221.69 |
| Intrinsic value | $15.80 | $240.05 |
| Margin of safety | -256% | +8% |
| Leak Score | 14/100 (3/12) | 41/100 (9/12) |
| Market cap | $40.8B | $17.8B |
| Revenue growth, 5 years | 7.8% | 17.7% |
| Operating margin | 10.4% | 5.2% |
| Net margin | 6.2% | 3.1% |
| Return on equity | 10.3% | 15.4% |
| Debt to equity | 1.86 | 0.93 |
| P/E | 57.6x | 35.3x |
| Forward P/E | 43.7x | 17.6x |
| P/B | 6.2x | 5.0x |
| Dividend yield | 2.0% | — |