Amkor Technology (AMKR) vs Onto Innovation (ONTO)
Head-to-head comparison of performance, valuation, growth, profitability and dividends. Prices delayed 15 minutes; data as of Oct 8, 2026.
Summary
Onto Innovation (ONTO) has outperformed Amkor Technology (AMKR) over the past year, gaining 125.3% versus a gain of 75.7%. Over five years, ONTO leads with a +321.6% price change compared with +135.6% for AMKR. Onto Innovation is the larger company by market cap ($14.94 billion vs $12.99 billion), about 1.2 times the size, while Amkor Technology is growing revenue faster (+6.2% vs +1.8%).
On valuation, Amkor Technology trades at a lower forward P/E (18.6x vs 26.0x for Onto Innovation). Amkor Technology pays a dividend yielding 0.64%, while Onto Innovation does not currently pay one. Onto Innovation converts more of its revenue into profit, with a net margin of 13.6% versus 5.6%.
Summary generated from market data by MetaCap's automated system. Methodology
Relative performance
Percent change in share price from the first common trading day shown; excludes dividends.
Head-to-head
| Metric | AMKR | ONTO |
|---|---|---|
| Share price | $52.27 | $304.40 |
| Market cap | $12.99B | $14.94B |
| 1-day change | -2.10% | -2.97% |
| YTD return | +32.40% | +92.83% |
| 1-year return | +75.70% | +125.30% |
| 5-year return | +135.56% | +321.61% |
| P/E ratio (TTM) | 23.44 | 114.44 |
| Forward P/E | 18.63 | 26.02 |
| EPS (TTM) | $2.23 | $2.66 |
| Dividend yield | 0.64% | 0.00% |
| Annual dividend | $0.333 | $0.00 |
| Revenue (latest FY) | $6.71B | $1.01B |
| Revenue growth (YoY) | +6.18% | +1.82% |
| Net income (latest FY) | $373.89M | $136.76M |
| Gross margin | 13.99% | 49.72% |
| Operating margin | 6.97% | 13.22% |
| Net margin | 5.57% | 13.60% |
| 52-week high | $96.68 | $386.46 |
| 52-week low | $28.19 | $118.97 |
| Distance from 52-week high | -45.94% | -21.23% |
| Analyst consensus | none | strong_buy |
| Avg. price target upside | +46.16% | +27.30% |
| Average volume | 4.73M | 1.01M |
| Shares outstanding | 248.45M | 49.07M |
| Employees | 30,800 | 1,867 |
| Sector | Technology | Industrials |
| Industry | Semiconductors | Industrial Machinery/Components |
Highlighted cells mark the higher value for growth, returns, margins and yield, and the lower value for P/E ratios. Highlighting is a mechanical comparison, not a recommendation.
Key differences
- ONTO has outperformed AMKR by 49.6 percentage points over the past year.
- Onto Innovation trades at a higher earnings multiple (114.4x vs 23.4x trailing P/E).
- Onto Innovation is more profitable, keeping 13.6 cents of every revenue dollar as net income versus 5.6 cents for Amkor Technology.
- The two companies sit in different sectors: Amkor Technology in Technology and Onto Innovation in Industrials.
About Amkor Technology
AMKR stock →Amkor Technology, Inc. provides outsourced semiconductor packaging and test services in the United States, Japan, Europe, and the Asia Pacific.
Technology · Semiconductors · 30,800 employees
About Onto Innovation
ONTO stock →Onto Innovation Inc. engages in the design, development, manufacture, and support of process control tools that perform macro-defect inspection and metrology in the United States, Taiwan, South Korea, Japan, China, Southeast Asia, Asia, and Europe.
Industrials · Industrial Machinery/Components · 1,867 employees
AMKR vs ONTO FAQ
Which is bigger, Amkor Technology or Onto Innovation?
Onto Innovation (ONTO) is larger, with a market capitalization of $14.94B compared with $12.99B for Amkor Technology (AMKR).
Which stock has performed better over the past year, AMKR or ONTO?
ONTO returned +125.30% over the past 12 months, compared with +75.70% for AMKR (price return, excluding dividends). Past performance does not predict future results.
Which has the lower P/E ratio, AMKR or ONTO?
AMKR has the lower trailing P/E at 23.4, versus 114.4 for ONTO. A lower P/E is not by itself a sign of a better investment; it can reflect slower expected growth or higher risk.
Which pays a higher dividend, Amkor Technology or Onto Innovation?
Amkor Technology pays a dividend yielding 0.64%, while Onto Innovation does not currently pay a regular dividend.
Are Amkor Technology and Onto Innovation in the same industry?
No. Amkor Technology is in the Technology sector, while Onto Innovation is in Industrials.