Rambus Inc (RMBS) stock
Close on Nov 11, 2026Market cap $9.14BP/E 35.1Yield –
Rambus Inc grew revenue 17.3% to $796.11M over the twelve months to Sep 30, 2026. Operating income rose 16.9% to $288.97M, moving the operating margin from 36.4% to 36.3%. Free cash flow was $312.93M, up 7.0% from a year earlier. At the latest close the market valued the company at $9.14B, 35.1 times its earnings.
Key statistics
Valuation at the latest close; fundamentals over the trailing twelve months, balances at Sep 30, 2026
Valuation
- Market cap
- $9.14B
- P/E ratio
- 35.1
- Price to sales
- 11.48
- Price to book
- 6.45
- Dividend yield
- –
- Free cash flow yield
- 3.42%
Fundamentals
- Revenue
- $796.11M
- Net income
- $265.87M
- EPS, diluted
- $2.43
- Free cash flow
- $312.93M
- Book value per share
- $13.03
- Diluted shares
- 109M
Trading
- Next earnings
- Feb 1, 2027 (estimated, after the close)
- Previous close
- $80.76
- Open
- $86.70
- Day's range
- $83.75 – $87.83
- Volume
- 1,041,315
- Average volume (20 days)
- 2,007,404
- Index membership
- S&P MidCap 400 (since Feb 2024), Russell 1000 (since Jun 2026), Russell 3000
- Beta (5 years)
- 1.75
- 52-week range
- $68.19 – $174.10
- RSI (14 days)
- 47.3
- Volatility (1 year)
- 79.9%
- Relative volume
- 0.45×
- WACC
- 13.6%
On 1 of our idea list: Breakout quarter
Index membership is inferred from the holdings of funds that track each index (IJH, SPMD, IWB, IWV), as reported to the SEC for Jun 30, 2026. Join dates come from quarterly fund reports since 2019, so they are accurate to the quarter.
Market cap history
Month-end market cap since 2009, using shares outstanding reported at the time
Total return vs. the S&P 500
Price change plus reinvested dividends, to the close on Nov 11, 2026. The S&P 500 is measured by the SPY fund.
| Period | RMBS | S&P 500 | Difference | RMBS per year | S&P 500 per year |
|---|---|---|---|---|---|
| 1 month | -20.6% | -2.4% | −18.2 pts | ||
| 3 months | -11.5% | -1.2% | −10.3 pts | ||
| Year to date | -7.1% | +12.3% | −19.4 pts | ||
| 1 year | -18.7% | +12.4% | −31.1 pts | ||
| 3 years | +36.2% | +78.8% | −42.6 pts | +10.8% | +21.4% |
| 5 years | +252.0% | +75.2% | +176.8 pts | +28.6% | +11.9% |
| 10 years | +561.2% | +311.1% | +250.1 pts | +20.8% | +15.2% |
Fifteen years at a glance
Fiscal years 2011 to 2025 and trailing twelve months, USD
Revenue
Gross profit
Operating income
Net income
EPS, diluted
Free cash flow
Press releases
Releases Rambus filed with the SEC as exhibits to Form 8-K or 6-K
- Results
- Results
- Results
- Results
- Results
- Results
About Rambus
Semiconductors & Related Devices
Rambus Inc. provides semiconductor products and silicon intellectual property targeting data-intensive computing systems, artificial intelligence infrastructure, and data centers. The company operates a fabless model and concentrates on memory interface chips—including registering clock drivers, data buffers, clock drivers, power management circuits, and sensors—as well as silicon IP encompassing memory and chip-to-chip controllers and hardware security cores. Rambus also licenses its patented inventions covering memory architecture and serial links to system companies and chip designers. Customers include memory module manufacturers, original equipment manufacturers, hyperscalers, and leading semiconductor developers.
Company profile, executives and historyRambus stock: common questions
What is Rambus's stock price?
RMBS closed at $85.36 on Nov 11, 2026, up 5.70% on the day. Over the past 52 weeks it traded between $68.19 and $174.10.
What is Rambus's market cap?
Rambus was worth $9.14B at the close on Nov 11, 2026: the share price times the diluted shares outstanding.
What is RMBS's P/E ratio?
RMBS trades at 35.1 times earnings, based on diluted earnings per share of $2.43 over the twelve months to Sep 30, 2026.
How much revenue does Rambus make?
Rambus reported revenue of $796.11M for the twelve months to Sep 30, 2026, up 17.3% from a year earlier.
Does Rambus pay a dividend?
No. Rambus has not paid a cash dividend over the last twelve months.
When does Rambus report earnings next?
Rambus is expected to report Q4 FY2026 results on Feb 1, 2027, after the close. The date is estimated from its past reporting pattern until the company confirms it.
How has RMBS stock performed over the past year?
Including dividends, RMBS returned -18.7% over the past year, against +12.4% for the S&P 500.
How many RMBS shares are sold short?
4M shares were sold short at the latest FINRA report, 4.21% of the float, or 2.1 days of average trading volume.
Who are Rambus's competitors?
Companies most similar to Rambus by business, industry and size include SIMO, MXL, ALAB, LSCC, SYNA.
See a number that looks wrong?