GPW · KER · stock
Kernel Holding S.A. (KER) stock price history
Every GPW trading session of Kernel Holding S.A. from Nov 23, 2007 to Sep 28, 2026: 4,826 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.
KER adjusted close, 2007 to 2026
- PLN 82.12
- All time high, 2011
- PLN 23.20
- 52 week high, PLN 18.50 low
- 4,826
- Daily sessions since 2007
Last updated Sep 28, 2026, the last stored session. Refreshes after each trading day. Full 2007 to 2026 series and minute bars.
KER key facts
- Kernel Holding S.A. (KER) closed at PLN 19.58 on Sep 28, 2026 on GPW.
- KER's all time high close is PLN 82.12, set on Feb 7, 2011; its all time low close is PLN 6.34 on Sep 15, 2023.
- KER's 52 week range is PLN 18.50 to PLN 23.20.
- KER returned +3.7% over the year to Sep 28, 2026 and -67.0% over five years.
- Over ten years KER returned -66%, -10.3% a year compounded.
- KER's deepest drawdown was -92.3% from Feb 7, 2011 to Sep 15, 2023.
- DataCedar holds 4,826 daily sessions of KER history from Nov 23, 2007 and minute bars from Sep 17, 2026, adjusted for splits and dividends, served by the API under a key.
KER price chart, 2007 to 2026
KER returns
Price return from the last close on or before the window start to Sep 28, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | +0.6% |
| 3 months | +1.9% |
| 6 months | +2.9% |
| Year to date | -6.8% |
| 1 year | +3.7% |
| 3 years | +182.5% |
| 5 years | -67.0% |
| 10 years | -66.1% |
| Since Nov 23, 2007 | -14.5% |
| Compound annual growth, 18.8 years | -0.8% |
KER records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- PLN 82.12 on Feb 7, 2011
- All time low close
- PLN 6.34 on Sep 15, 2023
- 52 week high
- PLN 23.20 on Nov 24, 2025
- 52 week low
- PLN 18.50 on Oct 15, 2025
- Deepest drawdown
- -92.3% from Feb 7, 2011 to Sep 15, 2023, not yet recovered
- Best single session
- +37.4% on Mar 3, 2022
- Worst single session
- -46.1% on Feb 24, 2022
- Volatility, 1 year annualised
- 25.0%
- Sessions closing higher, 1 year
- 40%
- Best calendar year
- 2009, +240%
- Worst calendar year
- 2022, -70%
KER 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. 2007 starts on Nov 23, 2007; 2026 runs to Sep 28, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | PLN 20.65 | PLN 22.75 | PLN 18.60 | PLN 19.58 | -6.8% | 1.9M | 187 |
| 2025 | PLN 13.08 | PLN 29.35 | PLN 13.02 | PLN 21.00 | +59.6% | 11.2M | 249 |
| 2024 | PLN 9.21 | PLN 14.20 | PLN 8.55 | PLN 13.16 | +43.8% | 7M | 249 |
| 2023 | PLN 17.70 | PLN 21.46 | PLN 6.33 | PLN 9.15 | -47.8% | 24.5M | 250 |
| 2022 | PLN 58.42 | PLN 59.41 | PLN 15.50 | PLN 17.54 | -69.9% | 38.4M | 251 |
| 2021 | PLN 48.78 | PLN 63.97 | PLN 46.96 | PLN 58.22 | +20.1% | 30.3M | 251 |
| 2020 | PLN 44.23 | PLN 53.11 | PLN 30.84 | PLN 48.49 | +9.6% | 13.4M | 259 |
| 2019 | PLN 47.63 | PLN 53.28 | PLN 39.54 | PLN 44.23 | -7.1% | 11.1M | 261 |
| 2018 | PLN 46.01 | PLN 55.08 | PLN 41.36 | PLN 47.63 | +3.5% | 16.4M | 261 |
| 2017 | PLN 62.58 | PLN 79.01 | PLN 43.57 | PLN 46.01 | -25.3% | 26.5M | 255 |
| 2016 | PLN 45.84 | PLN 64.64 | PLN 38.99 | PLN 61.60 | +33.4% | 25.8M | 251 |
| 2015 | PLN 27.14 | PLN 53.27 | PLN 25.08 | PLN 46.18 | +70.1% | 39.8M | 261 |
| 2014 | PLN 36.31 | PLN 40.85 | PLN 20.03 | PLN 27.14 | -25.2% | 51M | 261 |
| 2013 | PLN 63.66 | PLN 66.38 | PLN 34.34 | PLN 36.31 | -43.0% | 39M | 261 |
| 2012 | PLN 66.05 | PLN 72.48 | PLN 48.64 | PLN 63.66 | -3.9% | 25.8M | 261 |
| 2011 | PLN 69.72 | PLN 83.93 | PLN 50.07 | PLN 66.24 | -6.8% | 37M | 260 |
| 2010 | PLN 39.87 | PLN 71.20 | PLN 38.44 | PLN 71.05 | +78.2% | 24.5M | 261 |
| 2009 | PLN 11.73 | PLN 43.44 | PLN 11.73 | PLN 39.87 | +239.8% | 16.4M | 261 |
| 2008 | PLN 37.20 | PLN 38.82 | PLN 10.73 | PLN 11.73 | -63.8% | 28.8M | 252 |
| 2007 | PLN 22.89 | PLN 34.33 | PLN 22.67 | PLN 32.43 | n/a | 2M | 24 |
KER monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| September 2026 | PLN 19.58 | +1.2% |
| August 2026 | PLN 19.34 | +0.5% |
| July 2026 | PLN 19.24 | -1.4% |
| June 2026 | PLN 19.52 | +1.2% |
| May 2026 | PLN 19.28 | -3.6% |
| April 2026 | PLN 20.00 | +5.3% |
| March 2026 | PLN 19.00 | -9.3% |
| February 2026 | PLN 20.95 | -7.3% |
| January 2026 | PLN 22.60 | +7.6% |
| December 2025 | PLN 21.00 | -0.5% |
| November 2025 | PLN 21.10 | +10.1% |
| October 2025 | PLN 19.16 | +1.1% |
About the KER data
Daily bars. 4,826 sessions from Nov 23, 2007 to Sep 28, 2026, one row per GPW 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 GPW trading days; minute timestamps are UTC. Prices are in PLN. 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 Nov 23, 2007, 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/KER/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on GPW
Common questions
KER share price history
