Rambus Inc (RMBS)
Rambus Inc. manufactures and sells semiconductor products in the United States, South Korea, Singapore, and internationally. It offers memory interface chips comprising DDR5 memory interface chips which include registering clock driver, multiplexed registering clock driver, multiplexed data buffer, power management integrated circuits, serial presence detect hubs, temperature sensors, and client clock driver products; and DDR4 memory interface chips. The company also provides silicon IP, such as interface and security IP solutions that move and protect data in advanced artificial intelligence, data center, government, and automotive applications; interface IP solutions for high-speed memory and chip-to-chip digital controller IP; security IP solutions, including crypto cores, hardware roots of trust, high-speed protocol engines, and chip provisioning technologies. In addition, it offers portfolio of patents that covers memory architecture, high-speed serial links, and security products. The company sells its products to memory module manufacturers, OEMs and hyperscalers, as well as to chip makers. It markets its products and services through its direct sales force and distributors. Rambus Inc. was incorporated in 1990 and is headquartered in San Jose, California.
- Symbol
- RMBS
- Exchange
- Nasdaq
- Sector
- Technology
- Industry
- Semiconductors
- Market cap
- $11.38B
- 52 week range
- 77.89 - 174.1
Valuation
- Share price
- $103.47 (close of 2026-09-23)
- P/E (TTM)
- 49.41x
- Price to book
- 8.17x
- Price to free cash flow
- 33.95x
- Enterprise value
- $11.27B
- Book value per share
- $12.88
Price performance
| Period | Change |
|---|
| 1 day | +6.71% |
| 5 days | +24.50% |
| 1 month | +13.40% |
| 3 months | -19.30% |
| 6 months | +10.84% |
| Year to date | +12.60% |
| 1 year | +0.83% |
| 3 years | +92.83% |
| 5 years | +350.26% |
| 10 years | +725.12% |
| All time | +1268.65% |
Profitability and growth
- Return on equity
- 16.89%
- Return on invested capital
- 17.30%
- Return on assets
- 15.07%
- Return on capital employed
- 18.47%
- Gross margin
- 79.59%
- Net margin
- 32.57%
- EBITDA margin
- 41.13%
- Revenue growth
- 27.13%
- Net income growth
- 28.16%
- Free cash flow growth
- 66.67%
Cash flow and balance sheet
- Free cash flow yield (TTM)
- 2.95%
- Current ratio
- 9.82x
- Net debt to EBITDA
- -0.34x
Latest reported year
- Period end
- 2025-12-31
- Fiscal year
- 2025
- Revenue
- $707.63M
- Cost of revenue
- $144.41M
- Gross profit
- $563.22M
- EBITDA
- $291.02M
- Net income
- $230.46M
- Earnings per share
- $2.14
- Research and development
- $187.71M
- Shares outstanding
- 107.55M
Income statement by year
| Period end | Revenue | Gross profit | Net income | EPS |
|---|
| 2025-12-31 | $707.63M | $563.22M | $230.46M | $2.14 |
| 2024-12-31 | $556.62M | $446.52M | $179.82M | $1.67 |
| 2023-12-31 | $461.12M | $357.69M | $333.90M | $3.09 |
| 2022-12-31 | $454.79M | $347.21M | $-14.31M | $-0.13 |
| 2021-12-31 | $328.30M | $257.91M | $18.33M | $0.17 |
| 2020-12-31 | $246.32M | $185.57M | $-40.47M | $-0.36 |
| 2019-12-31 | $227.60M | $176.23M | $-85.96M | $-0.77 |
| 2018-12-31 | $231.20M | $177.50M | $-157.96M | $-1.46 |
| 2017-12-31 | $393.10M | $337.73M | $-22.86M | $-0.21 |
| 2016-12-31 | $336.60M | $290.84M | $6.82M | $0.06 |
Margins and returns by year
| Period end | Gross margin | Net margin | Return on equity | Return on capital |
|---|
| 2025-12-31 | 79.59% | 32.57% | 16.89% | 17.30% |
| 2024-12-31 | 80.22% | 32.31% | 16.05% | 15.49% |
| 2023-12-31 | 77.57% | 72.41% | 32.16% | 15.77% |
| 2022-12-31 | 76.35% | -3.15% | -1.84% | 10.09% |
| 2021-12-31 | 78.56% | 5.58% | 2.13% | 2.45% |
| 2020-12-31 | 75.34% | -16.43% | -4.43% | -9.66% |
| 2019-12-31 | 77.43% | -37.77% | -8.81% | -16.31% |
| 2018-12-31 | 76.77% | -68.32% | -15.61% | -11.84% |
| 2017-12-31 | 85.92% | -5.82% | -4.00% | 11.23% |
| 2016-12-31 | 86.40% | 2.03% | 1.23% | 4.68% |
Cash and debt by year
| Period end | Cash |
|---|
| 2025-12-31 | $182.82M |
| 2024-12-31 | $99.77M |
| 2023-12-31 | $94.77M |
| 2022-12-31 | $125.34M |
| 2021-12-31 | $107.89M |
| 2020-12-31 | $495.47M |
| 2019-12-31 | $407.66M |
| 2018-12-31 | $277.76M |
| 2017-12-31 | $329.38M |
| 2016-12-31 | $172.18M |
Free cash flow by year
| Period end | Free cash flow | Stock-based compensation |
|---|
| 2025-12-31 | $333.18M | $54.27M |
| 2024-12-31 | $199.90M | $44.88M |
| 2023-12-31 | $172.55M | $45.01M |
| 2022-12-31 | $212.91M | $35.55M |
| 2021-12-31 | $195.43M | $27.49M |
| 2020-12-31 | $155.73M | $25.78M |
| 2019-12-31 | $122.06M | $26.48M |
| 2018-12-31 | $75.46M | $21.74M |
| 2017-12-31 | $108.05M | $27.40M |
| 2016-12-31 | $87.05M | $21.01M |
Investor relations
Next earnings report
- Next confirmed report
- 2026-10-26
- Consensus EPS estimate
- $0.65
Past earnings dates
| Reported | Fiscal period | EPS estimate |
|---|
| 2026-07-27 | Jun/2026 | $0.58 |
| 2026-04-27 | - | - |
| 2026-02-02 | - | - |
| 2025-10-27 | - | - |
| 2025-07-28 | - | - |
| 2025-04-28 | - | - |
| 2025-02-03 | - | - |
| 2024-10-28 | - | - |
Filings and sources
- Company website
- rambus.com
- SEC filings
- 10-K, 10-Q and 8-K on EDGAR
- Earnings calendar
- All upcoming reports
Similar companies
NVIDIA Corp (NVDA) · Broadcom Inc. (AVGO) · Micron Technology Inc (MU) · Advanced Micro Devices Inc (AMD) · Intel Corp (INTC) · Arm Holdings plc (ARM) · Texas Instruments Inc (TXN) · Qualcomm Inc (QCOM)
All Technology companies
Understanding these figures
Price-to-earnings ratio · Discounted cash flow · Free cash flow · Earnings per share · Return on equity · Gross margin vs net margin · Reading a balance sheet · Debt and leverage · Dividend yield · Insider transactions and Form 4 · How to read a stock chart
Explore
Company directory · S&P 500 heatmap · Earnings calendar · Super investor holdings · Congress trades