Euronext Paris · ALPRG · stock
Prologue S.A. (ALPRG) stock price history
Every Euronext Paris trading session of Prologue S.A. from Jan 2, 2001 to Sep 28, 2026: 6,609 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.
ALPRG adjusted close, 2001 to 2026
- €9.88
- All time high, 2001
- €0.3840
- 52 week high, €0.2280 low
- 6,609
- Daily sessions since 2001
Last updated Sep 28, 2026, the last stored session. Refreshes after each trading day. Full 2001 to 2026 series and minute bars.
ALPRG key facts
- Prologue S.A. (ALPRG) closed at €0.2820 on Sep 28, 2026 on Euronext Paris.
- ALPRG's all time high close is €9.88, set on Jan 19, 2001; its all time low close is €0.1600 on Mar 11, 2024.
- ALPRG's 52 week range is €0.2280 to €0.3840.
- ALPRG returned +13.3% over the year to Sep 28, 2026 and -32.0% over five years.
- Over ten years ALPRG returned -69%, -11.2% a year compounded.
- ALPRG's deepest drawdown was -98.4% from Jan 19, 2001 to Mar 11, 2024.
- DataCedar holds 6,609 daily sessions of ALPRG history from Jan 2, 2001 and minute bars from Sep 17, 2026, adjusted for splits and dividends, served by the API under a key.
ALPRG price chart, 2001 to 2026
ALPRG returns
Price return from the last close on or before the window start to Sep 28, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | -14.5% |
| 3 months | -17.1% |
| 6 months | +17.5% |
| Year to date | +9.3% |
| 1 year | +13.3% |
| 3 years | +10.6% |
| 5 years | -32.0% |
| 10 years | -69.3% |
| Since Jan 2, 2001 | -96.9% |
| Compound annual growth, 25.7 years | -12.6% |
ALPRG records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- €9.88 on Jan 19, 2001
- All time low close
- €0.1600 on Mar 11, 2024
- 52 week high
- €0.3840 on Jun 11, 2026
- 52 week low
- €0.2280 on Mar 23, 2026
- Deepest drawdown
- -98.4% from Jan 19, 2001 to Mar 11, 2024, not yet recovered
- Best single session
- +80.0% on Sep 24, 2002
- Worst single session
- -36.7% on Jul 17, 2008
- Volatility, 1 year annualised
- 38.3%
- Sessions closing higher, 1 year
- 41%
- Best calendar year
- 2011, +106%
- Worst calendar year
- 2008, -72%
ALPRG 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. 2001 starts on Jan 2, 2001; 2026 runs to Sep 28, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | €0.2580 | €0.3840 | €0.2280 | €0.2820 | +11.5% | 23.5M | 189 |
| 2025 | €0.2020 | €0.3900 | €0.2000 | €0.2530 | +26.5% | 35.1M | 255 |
| 2024 | €0.2270 | €0.2430 | €0.1550 | €0.2000 | -10.7% | 18.4M | 256 |
| 2023 | €0.2280 | €0.3350 | €0.2050 | €0.2240 | +0.9% | 24.5M | 255 |
| 2022 | €0.3580 | €0.3580 | €0.1835 | €0.2220 | -35.7% | 19.2M | 257 |
| 2021 | €0.3490 | €0.4890 | €0.3040 | €0.3450 | -0.9% | 34.7M | 258 |
| 2020 | €0.3350 | €0.4100 | €0.1500 | €0.3480 | +1.8% | 30.9M | 257 |
| 2019 | €0.3835 | €0.6200 | €0.3040 | €0.3420 | -10.5% | 39.1M | 256 |
| 2018 | €0.7100 | €0.7890 | €0.3625 | €0.3820 | -46.2% | 34.9M | 255 |
| 2017 | €0.8100 | €1.05 | €0.6600 | €0.7100 | -9.0% | 109.6M | 255 |
| 2016 | €1.56 | €1.56 | €0.5800 | €0.7800 | -50.0% | 49.3M | 257 |
| 2015 | €1.59 | €2.10 | €1.35 | €1.56 | -1.9% | 21.4M | 255 |
| 2014 | €2.12 | €2.64 | €1.39 | €1.59 | -23.6% | 19M | 256 |
| 2013 | €1.35 | €2.87 | €0.9500 | €2.08 | +55.2% | 25.7M | 255 |
| 2012 | €1.05 | €1.53 | €0.5200 | €1.34 | +30.1% | 7.9M | 254 |
| 2011 | €0.5100 | €1.30 | €0.5100 | €1.03 | +106.0% | 3.1M | 257 |
| 2010 | €0.4700 | €0.6400 | €0.3600 | €0.5000 | +6.4% | 741.2K | 256 |
| 2009 | €0.8600 | €1.03 | €0.4000 | €0.4700 | -34.7% | 771.6K | 256 |
| 2008 | €2.54 | €2.56 | €0.6000 | €0.7200 | -72.0% | 842.9K | 256 |
| 2007 | €5.10 | €5.10 | €1.53 | €2.57 | -49.6% | 2.1M | 255 |
| 2006 | €5.10 | €5.10 | €5.10 | €5.10 | 0.0% | 0 | 255 |
| 2005 | €5.10 | €5.10 | €5.10 | €5.10 | 0.0% | 0 | 260 |
| 2004 | €3.66 | €8.10 | €3.66 | €5.10 | +39.3% | 20.2M | 262 |
| 2003 | €2.84 | €4.20 | €1.48 | €3.66 | +28.9% | 10.6M | 261 |
| 2002 | €4.94 | €5.50 | €0.9100 | €2.84 | -42.5% | 10M | 261 |
| 2001 | €9.02 | €10.59 | €2.65 | €4.94 | n/a | 6.5M | 260 |
ALPRG monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| September 2026 | €0.2820 | -15.3% |
| August 2026 | €0.3330 | +8.1% |
| July 2026 | €0.3080 | -6.9% |
| June 2026 | €0.3310 | -3.5% |
| May 2026 | €0.3430 | +35.0% |
| April 2026 | €0.2540 | +4.1% |
| March 2026 | €0.2440 | -0.4% |
| February 2026 | €0.2450 | -2.4% |
| January 2026 | €0.2510 | -0.8% |
| December 2025 | €0.2530 | +9.5% |
| November 2025 | €0.2310 | -5.3% |
| October 2025 | €0.2440 | +3.4% |
About the ALPRG data
Daily bars. 6,609 sessions from Jan 2, 2001 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 Jan 2, 2001, 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/ALPRG/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on Euronext Paris
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Common questions
ALPRG share price history
