Astera Labs vs Rambus
Astera Labs reported revenue of $852 million in fiscal 2025, 1.2 times Rambus' $708 million in fiscal 2025. Astera Labs' revenue grew 115.1% in its latest year, and Rambus' grew 27.1%. Astera Labs had an operating margin of 20.3%, against 36.8% at Rambus. Free cash flow was $282 million at Astera Labs and $333 million at Rambus.
Side by side
| Astera Labs | Rambus | |
|---|---|---|
| Latest fiscal year | FY2025, Dec 31, 2025 | FY2025, Dec 31, 2025 |
| Revenue | $852M | $708M |
| Revenue growth | 115.1% | 27.1% |
| Revenue growth a year, last 5 years | — | 23.5% |
| Gross margin | 75.7% | 79.6% |
| Operating margin | 20.3% | 36.8% |
| Net margin | 25.7% | 32.6% |
| Free cash flow | $282M | $333M |
| Free cash flow margin | 33.0% | 47.1% |
| Return on capital | — | 34.3% |
| Net debt to EBITDA | — | — |
| Dividends and buybacks | $0M | $7M |
| Change in diluted share count | 36.8% | 0.2% |
| Last close | $259.51 | $90.32 |
| P/E at the last close | 128.5× | 37.2× |
| Insider trades, last 12 months | sold $702.2 million | sold $20.5 million |
| Piotroski F-score | — | 5 of 9 |
Amounts in each company's own currency, US$ 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
Astera LabsRambus
Operating margin
Percent of revenue
Astera LabsRambus
Free cash flow
US$ billions. Cash from operations minus capital expenditure.
Astera LabsRambus
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 Astera Labs and Rambus pages.