AMETEK, Inc. vs TERADYNE, INC., two Scientific Instruments stocks. A side-by-side on valuation, growth, margins, returns, and what each price is betting.
Teradyne currently earns more on every measure of capital, 27.2% on equity and 19.3% on assets against AMETEK's 14% and 9.4%, and the difference is structural: chip-test demand is running hot while AMETEK's collection of niche instrument businesses grinds along by design. The market pays for the heat, 80.9 times Teradyne's earnings against 35.9 times AMETEK's. Cash tells the countervailing story: AMETEK converts 3.1% of its price into free cash, nearly four times Teradyne's 0.8%. AMETEK's 26.7% operating margin, quietly higher than most of its glamorous peers, is the sort of number that never trends. A buyer chooses between a cycle at full throttle and a machine that does not notice cycles.
Comparison updated 2026-07-10.
| Metric | AME | TER |
|---|---|---|
| Price | $237.48 | $435.82 |
| Market cap | $54.6B | $68.7B |
| Sector | Scientific Instruments | Scientific Instruments |
| Stage | Mature | Growth |
| P/E | 35.9 | 80.9 |
| P/B | 5.00 | 21.85 |
| P/S | 7.18 | 18.14 |
| EV/EBITDA | 23.5 | 60.4 |
| Revenue growth | +9.5% | +31.1% |
| Gross margin | — | 60.9% |
| Operating margin | 26.7% | 36.9% |
| Net margin | 20.1% | 22.6% |
| Return on equity | 14.0% | 27.2% |
| Return on assets | 9.4% | 19.3% |
| Return on invested capital | 12.2% | 27.6% |
| FCF yield | 3.1% | 0.8% |
| Dividend yield | 0.2% | 0.1% |
| Debt / equity | 0.20 | 0.00 |
| Current ratio | 1.14 | 2.15 |
| Altman Z (solvency) | 7.68 | 7.87 |
| Piotroski F (quality) | 7 / 9 | 6 / 9 |
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The stronger value is highlighted per metric where one is strictly better on that single number; it is not an overall verdict on either company. For informational and research purposes only. Not investment advice. Not a recommendation to buy, sell, or hold any security. boothcheck is not a registered investment adviser. Past performance does not guarantee future results.