Euronext Paris · ALTHX · stock
THX Pharma Société Anonyme (ALTHX) stock price history
Every Euronext Paris trading session of THX Pharma Société Anonyme from Oct 30, 2017 to Sep 28, 2026: 2,281 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.
ALTHX adjusted close, 2017 to 2026
- €22.70
- All time high, 2021
- €5.10
- 52 week high, €1.49 low
- 2,281
- Daily sessions since 2017
Last updated Sep 28, 2026, the last stored session. Refreshes after each trading day. Full 2017 to 2026 series and minute bars.
ALTHX key facts
- THX Pharma Société Anonyme (ALTHX) closed at €3.38 on Sep 28, 2026 on Euronext Paris.
- ALTHX's all time high close is €22.70, set on Jan 18, 2021; its all time low close is €0.3850 on Apr 28, 2025.
- ALTHX's 52 week range is €1.49 to €5.10.
- ALTHX returned +48.5% over the year to Sep 28, 2026 and -56.9% over five years.
- Since Oct 30, 2017 ALTHX returned -78%, -15.8% a year compounded.
- ALTHX's deepest drawdown was -98.3% from Jan 18, 2021 to Apr 28, 2025.
- DataCedar holds 2,281 daily sessions of ALTHX history from Oct 30, 2017 and minute bars from Sep 17, 2026, adjusted for splits and dividends, served by the API under a key.
ALTHX price chart, 2017 to 2026
ALTHX returns
Price return from the last close on or before the window start to Sep 28, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | -19.9% |
| 3 months | +7.5% |
| 6 months | +12.1% |
| Year to date | +64.3% |
| 1 year | +48.5% |
| 3 years | +190.3% |
| 5 years | -56.9% |
| 10 years | n/a |
| Since Oct 30, 2017 | -78.3% |
| Compound annual growth, 8.9 years | -15.8% |
ALTHX records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- €22.70 on Jan 18, 2021
- All time low close
- €0.3850 on Apr 28, 2025
- 52 week high
- €5.10 on Feb 11, 2026
- 52 week low
- €1.49 on Nov 25, 2025
- Deepest drawdown
- -98.3% from Jan 18, 2021 to Apr 28, 2025, not yet recovered
- Best single session
- +477.4% on Apr 1, 2020
- Worst single session
- -68.2% on Feb 28, 2019
- Volatility, 1 year annualised
- 78.0%
- Sessions closing higher, 1 year
- 44%
- Best calendar year
- 2020, +513%
- Worst calendar year
- 2019, -83%
ALTHX 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. 2017 starts on Oct 30, 2017; 2026 runs to Sep 28, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | €2.12 | €5.10 | €1.83 | €3.38 | +58.2% | 24.8M | 189 |
| 2025 | €0.5900 | €3.66 | €0.2605 | €2.14 | +270.2% | 33.4M | 255 |
| 2024 | €1.13 | €1.35 | €0.4600 | €0.5780 | -48.4% | 6.8M | 256 |
| 2023 | €1.75 | €3.18 | €1.02 | €1.12 | -36.0% | 4.7M | 255 |
| 2022 | €4.98 | €5.76 | €1.42 | €1.75 | -64.6% | 6.8M | 257 |
| 2021 | €18.85 | €23.60 | €4.30 | €4.95 | -73.5% | 14.8M | 258 |
| 2020 | €3.03 | €21.00 | €1.85 | €18.65 | +513.5% | 12.3M | 257 |
| 2019 | €17.82 | €21.15 | €2.20 | €3.04 | -83.0% | 1.1M | 256 |
| 2018 | €15.20 | €19.70 | €13.70 | €17.92 | +20.7% | 196.9K | 255 |
| 2017 | €15.75 | €15.94 | €14.80 | €14.85 | n/a | 62.8K | 43 |
ALTHX monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| September 2026 | €3.38 | -18.1% |
| August 2026 | €4.14 | -3.8% |
| July 2026 | €4.30 | +29.5% |
| June 2026 | €3.32 | -11.2% |
| May 2026 | €3.74 | +10.7% |
| April 2026 | €3.38 | +12.7% |
| March 2026 | €3.00 | -11.0% |
| February 2026 | €3.37 | +34.8% |
| January 2026 | €2.50 | +16.8% |
| December 2025 | €2.14 | +21.6% |
| November 2025 | €1.76 | -8.8% |
| October 2025 | €1.93 | -27.7% |
About the ALTHX data
Daily bars. 2,281 sessions from Oct 30, 2017 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 Oct 30, 2017, 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/ALTHX/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on Euronext Paris
Browse Euronext Paris
Common questions
ALTHX share price history
