Euronext Paris · OSE · stock
OSE Immunotherapeutics SA (OSE) stock price history
Every Euronext Paris trading session of OSE Immunotherapeutics SA from Mar 30, 2015 to Sep 28, 2026: 2,944 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.
OSE adjusted close, 2015 to 2026
- €15.00
- All time high, 2021
- €7.70
- 52 week high, €2.19 low
- 2,944
- Daily sessions since 2015
Last updated Sep 28, 2026, the last stored session. Refreshes after each trading day. Full 2015 to 2026 series and minute bars.
OSE key facts
- OSE Immunotherapeutics SA (OSE) closed at €2.37 on Sep 28, 2026 on Euronext Paris.
- OSE's all time high close is €15.00, set on Feb 8, 2021; its all time low close is €2.24 on Sep 25, 2026.
- OSE's 52 week range is €2.19 to €7.70.
- OSE returned -59.7% over the year to Sep 28, 2026 and -77.8% over five years.
- Over ten years OSE returned -65%, -9.9% a year compounded.
- OSE's deepest drawdown was -85.1% from Feb 8, 2021 to Sep 25, 2026.
- DataCedar holds 2,944 daily sessions of OSE history from Mar 30, 2015 and minute bars from Sep 17, 2026, adjusted for splits and dividends, served by the API under a key.
OSE price chart, 2015 to 2026
OSE returns
Price return from the last close on or before the window start to Sep 28, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | -25.8% |
| 3 months | -24.7% |
| 6 months | -22.1% |
| Year to date | -54.6% |
| 1 year | -59.7% |
| 3 years | -44.2% |
| 5 years | -77.8% |
| 10 years | -64.8% |
| Since Mar 30, 2015 | -77.3% |
| Compound annual growth, 11.5 years | -12.1% |
OSE records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- €15.00 on Feb 8, 2021
- All time low close
- €2.24 on Sep 25, 2026
- 52 week high
- €7.70 on Oct 2, 2025
- 52 week low
- €2.19 on Sep 28, 2026
- Deepest drawdown
- -85.1% from Feb 8, 2021 to Sep 25, 2026, not yet recovered
- Best single session
- +61.2% on Sep 12, 2023
- Worst single session
- -23.7% on Jun 26, 2017
- Volatility, 1 year annualised
- 65.1%
- Sessions closing higher, 1 year
- 38%
- Best calendar year
- 2020, +95%
- Worst calendar year
- 2017, -46%
OSE 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. 2015 starts on Mar 30, 2015; 2026 runs to Sep 28, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | €5.22 | €5.90 | €2.19 | €2.37 | -54.0% | 32.2M | 189 |
| 2025 | €7.20 | €7.85 | €4.42 | €5.15 | -28.2% | 29.6M | 255 |
| 2024 | €4.28 | €11.58 | €3.12 | €7.17 | +67.5% | 43.7M | 256 |
| 2023 | €6.68 | €7.31 | €2.70 | €4.28 | -35.9% | 29.5M | 255 |
| 2022 | €10.28 | €10.52 | €4.60 | €6.68 | -35.1% | 9.5M | 257 |
| 2021 | €7.24 | €15.80 | €7.20 | €10.28 | +42.8% | 29.7M | 258 |
| 2020 | €3.78 | €10.50 | €2.81 | €7.20 | +94.6% | 18.6M | 257 |
| 2019 | €3.40 | €4.44 | €3.15 | €3.70 | +8.8% | 2.4M | 256 |
| 2018 | €4.00 | €5.64 | €2.70 | €3.40 | -11.7% | 5.1M | 255 |
| 2017 | €7.26 | €7.50 | €3.23 | €3.85 | -45.6% | 4.1M | 255 |
| 2016 | €8.41 | €8.59 | €5.30 | €7.08 | -16.5% | 2.5M | 257 |
| 2015 | €10.90 | €12.65 | €7.86 | €8.48 | n/a | 3.5M | 194 |
OSE monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| September 2026 | €2.37 | -26.4% |
| August 2026 | €3.22 | +0.3% |
| July 2026 | €3.21 | +2.9% |
| June 2026 | €3.12 | -28.9% |
| May 2026 | €4.38 | +14.5% |
| April 2026 | €3.82 | +20.9% |
| March 2026 | €3.16 | -26.6% |
| February 2026 | €4.31 | -9.3% |
| January 2026 | €4.75 | -7.7% |
| December 2025 | €5.15 | -3.5% |
| November 2025 | €5.34 | -10.0% |
| October 2025 | €5.93 | -12.3% |
About the OSE data
Daily bars. 2,944 sessions from Mar 30, 2015 to Sep 28, 2026, one row per Euronext Paris 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 Euronext Paris 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 Mar 30, 2015, 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/OSE/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on Euronext Paris
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Common questions
OSE share price history
