Euronext Paris · ALTHE · stock
Theraclion SA (ALTHE) stock price history
Every Euronext Paris trading session of Theraclion SA from Apr 25, 2014 to Sep 28, 2026: 3,182 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.
ALTHE adjusted close, 2014 to 2026
- €13.35
- All time high, 2014
- €0.9300
- 52 week high, €0.4020 low
- 3,182
- Daily sessions since 2014
Last updated Sep 28, 2026, the last stored session. Refreshes after each trading day. Full 2014 to 2026 series and minute bars.
ALTHE key facts
- Theraclion SA (ALTHE) closed at €0.7170 on Sep 28, 2026 on Euronext Paris.
- ALTHE's all time high close is €13.35, set on May 7, 2014; its all time low close is €0.1417 on Apr 16, 2025.
- ALTHE's 52 week range is €0.4020 to €0.9300.
- ALTHE returned -6.9% over the year to Sep 28, 2026 and -62.3% over five years.
- Over ten years ALTHE returned -88%, -19.0% a year compounded.
- ALTHE's deepest drawdown was -98.9% from May 15, 2014 to Apr 16, 2025.
- DataCedar holds 3,182 daily sessions of ALTHE history from Apr 25, 2014 and minute bars from Sep 17, 2026, adjusted for splits and dividends, served by the API under a key.
ALTHE price chart, 2014 to 2026
ALTHE returns
Price return from the last close on or before the window start to Sep 28, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | +7.3% |
| 3 months | +8.5% |
| 6 months | +60.0% |
| Year to date | +20.3% |
| 1 year | -6.9% |
| 3 years | +28.0% |
| 5 years | -62.3% |
| 10 years | -87.8% |
| Since Apr 25, 2014 | -94.3% |
| Compound annual growth, 12.4 years | -20.6% |
ALTHE records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- €13.35 on May 7, 2014
- All time low close
- €0.1417 on Apr 16, 2025
- 52 week high
- €0.9300 on Jan 27, 2026
- 52 week low
- €0.4020 on Apr 1, 2026
- Deepest drawdown
- -98.9% from May 15, 2014 to Apr 16, 2025, not yet recovered
- Best single session
- +42.1% on Jul 25, 2025
- Worst single session
- -23.8% on Oct 13, 2020
- Volatility, 1 year annualised
- 83.7%
- Sessions closing higher, 1 year
- 43%
- Best calendar year
- 2019, +146%
- Worst calendar year
- 2018, -84%
ALTHE 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. 2014 starts on Apr 25, 2014; 2026 runs to Sep 28, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | €0.6020 | €0.9300 | €0.4020 | €0.7170 | +19.1% | 21.5M | 189 |
| 2025 | €0.3390 | €1.25 | €0.1416 | €0.6020 | +81.9% | 23.3M | 255 |
| 2024 | €0.4000 | €0.6800 | €0.2860 | €0.3310 | -14.7% | 6.9M | 256 |
| 2023 | €0.9040 | €0.9300 | €0.3000 | €0.3880 | -57.1% | 4.7M | 255 |
| 2022 | €1.32 | €1.63 | €0.8000 | €0.9040 | -31.0% | 3.8M | 257 |
| 2021 | €2.01 | €2.40 | €1.10 | €1.31 | -35.1% | 5.3M | 258 |
| 2020 | €1.64 | €2.76 | €0.7400 | €2.02 | +22.4% | 5.6M | 257 |
| 2019 | €0.6700 | €2.09 | €0.5000 | €1.65 | +146.3% | 10.1M | 256 |
| 2018 | €4.12 | €4.90 | €0.6060 | €0.6700 | -83.6% | 3.7M | 255 |
| 2017 | €5.28 | €6.30 | €3.85 | €4.09 | -21.8% | 2.9M | 255 |
| 2016 | €6.25 | €9.06 | €4.77 | €5.23 | -17.4% | 1.5M | 257 |
| 2015 | €8.34 | €10.60 | €6.18 | €6.33 | -22.8% | 690.1K | 255 |
| 2014 | €12.90 | €13.35 | €7.92 | €8.20 | n/a | 215.1K | 177 |
ALTHE monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| September 2026 | €0.7170 | -4.4% |
| August 2026 | €0.7500 | +29.1% |
| July 2026 | €0.5810 | -7.5% |
| June 2026 | €0.6280 | -9.8% |
| May 2026 | €0.6960 | +45.0% |
| April 2026 | €0.4800 | +11.9% |
| March 2026 | €0.4290 | -31.0% |
| February 2026 | €0.6220 | -5.8% |
| January 2026 | €0.6600 | +9.6% |
| December 2025 | €0.6020 | -7.4% |
| November 2025 | €0.6500 | +11.3% |
| October 2025 | €0.5840 | -20.0% |
About the ALTHE data
Daily bars. 3,182 sessions from Apr 25, 2014 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 Apr 25, 2014, 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/ALTHE/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on Euronext Paris
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Common questions
ALTHE share price history
