Amkor Technology vs ON Semiconductor
Amkor Technology reported revenue of $6.7 billion in fiscal 2025, about the same as ON Semiconductor's $6.0 billion in fiscal 2025. Amkor Technology's revenue grew 6.2% in its latest year, and ON Semiconductor's fell 15.3%. Amkor Technology had an operating margin of 7.0%, against 1.4% at ON Semiconductor. Free cash flow was $191 million at Amkor Technology and $1.4 billion at ON Semiconductor.
Side by side
| Amkor Technology | ON Semiconductor | |
|---|---|---|
| Latest fiscal year | FY2025, Dec 31, 2025 | FY2025, Dec 31, 2025 |
| Revenue | $6.7B | $6.0B |
| Revenue growth | 6.2% | −15.3% |
| Revenue growth a year, last 5 years | 5.8% | 2.7% |
| Gross margin | 14.0% | 33.1% |
| Operating margin | 7.0% | 1.4% |
| Net margin | 5.6% | 2.0% |
| Free cash flow | $191M | $1.4B |
| Free cash flow margin | 2.9% | 23.7% |
| Return on capital | 10.4% | 0.9% |
| Net debt to EBITDA | −0.5x | 0.6x |
| Dividends and buybacks | $82M | $1.4B |
| Change in diluted share count | 0.3% | −4.8% |
| Last close | $36.81 | $74.06 |
| P/E at the last close | 21.0× | 47.8× |
| Insider trades, last 12 months | sold $507.0 million | sold $21.3 million |
| Piotroski F-score | 6 of 9 | 5 of 9 |
Amounts in each company's own currency, US$ unless marked (a foreign company may report in another), each company's latest fiscal year from its 10-K, or 20-F or 40-F for a foreign company. Growth rates compare with the year before; the five-year rate is the average a year. Free cash flow is cash from operations minus capital spending; return on capital is after-tax operating income over the money invested in the business; P/E is the last close over the latest earnings per share. Banks are measured differently (return on equity, efficiency ratio), so some rows apply to one company only.
Ten years
Revenue
US$ billions, fiscal years
Amkor TechnologyON Semiconductor
Operating margin
Percent of revenue
Amkor TechnologyON Semiconductor
Free cash flow
US$ billions. Cash from operations minus capital expenditure.
Amkor TechnologyON Semiconductor
Source: the companies' Form 10-K filings, from SEC EDGAR, and the last close. For information only, not investment advice: the figures describe results, not which company is the better investment. The Filing Desk is not affiliated with either company. Full figures on the Amkor Technology and ON Semiconductor pages.