Diodes vs Tower Semiconductor
Tower Semiconductor reported revenue of $1.6 billion in fiscal 2025, about the same as Diodes' $1.5 billion in fiscal 2025. Diodes' revenue grew 13.0% in its latest year, and Tower Semiconductor's grew 9.1%. Diodes had an operating margin of 2.4%, against 12.4% at Tower Semiconductor. Free cash flow was $137 million at Diodes and −$49 million at Tower Semiconductor.
Side by side
| Diodes | Tower Semiconductor | |
|---|---|---|
| Latest fiscal year | FY2025, Dec 31, 2025 | FY2025, Dec 31, 2025 |
| Revenue | $1.5B | $1.6B |
| Revenue growth | 13.0% | 9.1% |
| Revenue growth a year, last 5 years | 3.8% | 4.4% |
| Gross margin | 31.2% | 23.2% |
| Operating margin | 2.4% | 12.4% |
| Net margin | 4.5% | 14.1% |
| Free cash flow | $137M | −$49M |
| Free cash flow margin | 9.2% | −3.1% |
| Return on capital | 1.9% | 9.9% |
| Net debt to EBITDA | −2.0x | −1.9x |
| Dividends and buybacks | $34M | $0M |
| Change in diluted share count | 0.0% | 1.1% |
| Last close | $77.36 | $137.34 |
| P/E at the last close | 30.9× | — |
| Insider trades, last 12 months | sold $16.8 million | sold $60.0 million |
| Piotroski F-score | 6 of 9 | 7 of 9 |
Amounts in each company's own currency, US$ 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
DiodesTower Semiconductor
Operating margin
Percent of revenue
DiodesTower Semiconductor
Free cash flow
US$ billions. Cash from operations minus capital expenditure.
DiodesTower 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 Diodes and Tower Semiconductor pages.