Borsa Italiana · 1RMBS · stock
Rambus Inc. (1RMBS) stock price history
Every Borsa Italiana trading session of Rambus Inc. from May 21, 2025 to Sep 28, 2026: 345 daily bars, adjusted for splits and dividends, with minute bars from Sep 17, 2026 forward. The full series is served by the API: a free key covers the last year, paid plans the whole history and minute bars.
1RMBS adjusted close, 2025 to 2026
- €146.35
- All time high, 2026
- €146.35
- 52 week high, €69.28 low
- 345
- Daily sessions since 2025
Last updated Sep 28, 2026, the last stored session. Refreshes after each trading day. Full 2025 to 2026 series and minute bars.
1RMBS key facts
- Rambus Inc. (1RMBS) closed at €88.58 on Sep 28, 2026 on Borsa Italiana.
- 1RMBS's all time high close is €146.35, set on Jun 3, 2026; its all time low close is €49.14 on May 21, 2025.
- 1RMBS's 52 week range is €69.28 to €146.35.
- 1RMBS returned +4.1% over the year to Sep 28, 2026.
- Since May 21, 2025 1RMBS returned +80%, +54.5% a year compounded.
- 1RMBS's deepest drawdown was -52.2% from Jun 3, 2026 to Sep 14, 2026.
- DataCedar holds 345 daily sessions of 1RMBS history from May 21, 2025 and minute bars from Sep 17, 2026, adjusted for splits and dividends, served by the API under a key.
1RMBS price chart, 2025 to 2026
1RMBS returns
Price return from the last close on or before the window start to Sep 28, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | +11.7% |
| 3 months | -13.2% |
| 6 months | +10.1% |
| Year to date | +7.6% |
| 1 year | +4.1% |
| 3 years | n/a |
| 5 years | n/a |
| 10 years | n/a |
| Since May 21, 2025 | +80.3% |
| Compound annual growth, 1.4 years | +54.5% |
1RMBS records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- €146.35 on Jun 3, 2026
- All time low close
- €49.14 on May 21, 2025
- 52 week high
- €146.35 on Jun 3, 2026
- 52 week low
- €69.28 on Sep 15, 2026
- Deepest drawdown
- -52.2% from Jun 3, 2026 to Sep 14, 2026, not yet recovered
- Best single session
- +30.1% on Sep 15, 2025
- Worst single session
- -27.8% on Apr 28, 2026
- Volatility, 1 year annualised
- 84.6%
- Sessions closing higher, 1 year
- 31%
1RMBS price history by year
Open is the first session's open, high and low span the year, close is the last session's close, and the return is close over the previous year's close. 2025 starts on May 21, 2025; 2026 runs to Sep 28, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | €82.34 | €145.20 | €69.28 | €88.58 | +7.6% | 18.3K | 189 |
| 2025 | €49.00 | €99.08 | €48.98 | €82.34 | n/a | 2K | 156 |
1RMBS monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| September 2026 | €88.58 | +11.7% |
| August 2026 | €79.32 | +0.4% |
| July 2026 | €78.98 | -28.6% |
| June 2026 | €110.55 | -15.5% |
| May 2026 | €130.90 | +35.5% |
| April 2026 | €96.58 | +34.8% |
| March 2026 | €71.66 | -17.2% |
| February 2026 | €86.56 | -14.5% |
| January 2026 | €101.20 | +22.9% |
| December 2025 | €82.34 | +2.4% |
| November 2025 | €80.42 | -11.1% |
| October 2025 | €90.46 | +6.3% |
About the 1RMBS data
Daily bars. 345 sessions from May 21, 2025 to Sep 28, 2026, one row per Borsa Italiana trading day with open, high, low, close and volume. Prices are adjusted for splits and cash dividends so the series is comparable across its whole length; the API also serves the raw, split only and dividend only views.
Minute bars. Stored from Sep 17, 2026 forward, most recent session Sep 25, 2026. Minute history is captured from the day collection began and is never backfilled, so this start date is exact. Five minute, fifteen minute and hourly bars are derived from these minutes.
Time and currency. Session dates are Borsa Italiana trading days; minute timestamps are UTC. Prices are in EUR. Volume is shares traded on the session.
Get the data. The REST endpoint returns the daily series as JSON with pagination; a free key serves the last year, Quant and above the full history back to May 21, 2025, and minute bars come with the paid windows. It takes timeframe (1Min, 5Min, 15Min, 1Hour, 1Day), adjustment, start and end. See the bars endpoint and authentication, and pricing for the plan windows.
curl "https://api.datacedar.com/v3/stocks/1RMBS/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on Borsa Italiana
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Common questions
1RMBS share price history
