Alpha and Omega Semiconductor vs Rambus
Rambus reported revenue of $708 million in fiscal 2025, about the same as Alpha and Omega Semiconductor's $679 million in fiscal 2026. Alpha and Omega Semiconductor's revenue fell 2.5% in its latest year, and Rambus' grew 27.1%. Alpha and Omega Semiconductor had an operating margin of -6.4%, against 36.8% at Rambus. Free cash flow was −$68 million at Alpha and Omega Semiconductor and $333 million at Rambus. Their fiscal years end in different months (June 30 and December 31), so the periods don't line up exactly.
Side by side
| Alpha and Omega Semiconductor | Rambus | |
|---|---|---|
| Latest fiscal year | FY2026, Jun 30, 2026 | FY2025, Dec 31, 2025 |
| Revenue | $679M | $708M |
| Revenue growth | −2.5% | 27.1% |
| Revenue growth a year, last 5 years | 0.7% | 23.5% |
| Gross margin | 22.3% | 79.6% |
| Operating margin | −6.4% | 36.8% |
| Net margin | −6.2% | 32.6% |
| Free cash flow | −$68M | $333M |
| Free cash flow margin | −10.0% | 47.1% |
| Return on capital | −5.2% | 34.3% |
| Net debt to EBITDA | −12.5x | — |
| Dividends and buybacks | $18M | $7M |
| Change in diluted share count | 1.9% | 0.2% |
| Last close | $23.61 | $74.53 |
| P/E at the last close | — | 30.7× |
| Insider trades, last 12 months | bought $640,813, sold $2.7 million | sold $20.5 million |
| Piotroski F-score | 5 of 9 | 5 of 9 |
Amounts in each company's own currency, US$ 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
Alpha and Omega SemiconductorRambus
Operating margin
Percent of revenue
Alpha and Omega SemiconductorRambus
Free cash flow
US$ billions. Cash from operations minus capital expenditure.
Alpha and Omega SemiconductorRambus
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 Alpha and Omega Semiconductor and Rambus pages.