Xetra · R1B · stock
Rubean AG (R1B) stock price history
Every Xetra trading session of Rubean AG from Feb 27, 2023 to Sep 28, 2026: 911 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.
R1B adjusted close, 2023 to 2026
- €8.75
- All time high, 2025
- €7.50
- 52 week high, €4.06 low
- 911
- Daily sessions since 2023
Last updated Sep 28, 2026, the last stored session. Refreshes after each trading day. Full 2023 to 2026 series and minute bars.
R1B key facts
- Rubean AG (R1B) closed at €4.84 on Sep 28, 2026 on Xetra.
- R1B's all time high close is €8.75, set on Jul 21, 2025; its all time low close is €4.00 on Apr 4, 2025.
- R1B's 52 week range is €4.06 to €7.50.
- R1B returned -28.3% over the year to Sep 28, 2026.
- Since Feb 27, 2023 R1B returned -30%, -9.5% a year compounded.
- R1B's deepest drawdown was -52.2% from Jul 21, 2025 to Apr 29, 2026.
- DataCedar holds 911 daily sessions of R1B history from Feb 27, 2023 and minute bars from Sep 17, 2026, adjusted for splits and dividends, served by the API under a key.
R1B price chart, 2023 to 2026
R1B returns
Price return from the last close on or before the window start to Sep 28, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | +5.2% |
| 3 months | +8.5% |
| 6 months | +2.5% |
| Year to date | +6.1% |
| 1 year | -28.3% |
| 3 years | -26.5% |
| 5 years | n/a |
| 10 years | n/a |
| Since Feb 27, 2023 | -30.2% |
| Compound annual growth, 3.6 years | -9.5% |
R1B records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- €8.75 on Jul 21, 2025
- All time low close
- €4.00 on Apr 4, 2025
- 52 week high
- €7.50 on Jan 8, 2026
- 52 week low
- €4.06 on Apr 28, 2026
- Deepest drawdown
- -52.2% from Jul 21, 2025 to Apr 29, 2026, not yet recovered
- Best single session
- +56.2% on Jan 8, 2026
- Worst single session
- -16.4% on May 31, 2023
- Volatility, 1 year annualised
- 73.5%
- Sessions closing higher, 1 year
- 33%
- Best calendar year
- 2025, -6%
- Worst calendar year
- 2024, -31%
R1B 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. 2023 starts on Feb 27, 2023; 2026 runs to Sep 28, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | €4.54 | €7.50 | €4.06 | €4.84 | +6.1% | 225.8K | 189 |
| 2025 | €4.88 | €9.00 | €4.00 | €4.56 | -6.2% | 237.7K | 253 |
| 2024 | €6.98 | €7.48 | €4.52 | €4.86 | -30.9% | 274.5K | 254 |
| 2023 | €6.88 | €7.88 | €5.14 | €7.03 | n/a | 190K | 215 |
R1B monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| September 2026 | €4.84 | +5.2% |
| August 2026 | €4.60 | +1.3% |
| July 2026 | €4.54 | +3.2% |
| June 2026 | €4.40 | -11.6% |
| May 2026 | €4.98 | +16.9% |
| April 2026 | €4.26 | -7.8% |
| March 2026 | €4.62 | -4.1% |
| February 2026 | €4.82 | -6.4% |
| January 2026 | €5.15 | +12.9% |
| December 2025 | €4.56 | -8.4% |
| November 2025 | €4.98 | -11.9% |
| October 2025 | €5.65 | -13.7% |
About the R1B data
Daily bars. 911 sessions from Feb 27, 2023 to Sep 28, 2026, one row per Xetra 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 28, 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 Xetra 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 Feb 27, 2023, 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/R1B/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on Xetra
Common questions
R1B share price history
