LSE · GCL · stock
Geiger Counter Limited (GCL) stock price history
Every LSE trading session of Geiger Counter Limited from Sep 22, 2017 to Nov 13, 2026: 1,630 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.
GCL adjusted close, 2017 to 2026
- £0.8650
- All time high, 2026
- £0.9295
- 52 week high, £0.3950 low
- 1,630
- Daily sessions since 2017
Last updated Nov 13, 2026, the last stored session. Refreshes after each trading day. Full 2017 to 2026 series and minute bars.
GCL key facts
- Geiger Counter Limited (GCL) closed at £0.4040 on Nov 13, 2026 on LSE.
- GCL's all time high close is £0.8650, set on Jan 28, 2026; its all time low close is £0.0970 on Mar 20, 2020.
- GCL's 52 week range is £0.3950 to £0.9295.
- GCL returned -22.9% over the year to Nov 13, 2026 and -43.9% over five years.
- Since Sep 22, 2017 GCL returned +111%, +8.5% a year compounded.
- GCL's deepest drawdown was -64.4% from Dec 13, 2017 to Mar 20, 2020.
- DataCedar holds 1,630 daily sessions of GCL history from Sep 22, 2017 and minute bars from Sep 17, 2026, adjusted for splits and dividends, served by the API under a key.
GCL price chart, 2017 to 2026
GCL returns
Price return from the last close on or before the window start to Nov 13, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | -19.8% |
| 3 months | -33.8% |
| 6 months | -44.3% |
| Year to date | -33.2% |
| 1 year | -22.9% |
| 3 years | -20.2% |
| 5 years | -43.9% |
| 10 years | n/a |
| Since Sep 22, 2017 | +111.2% |
| Compound annual growth, 9.1 years | +8.5% |
GCL records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- £0.8650 on Jan 28, 2026
- All time low close
- £0.0970 on Mar 20, 2020
- 52 week high
- £0.9295 on Jan 29, 2026
- 52 week low
- £0.3950 on Nov 6, 2026
- Deepest drawdown
- -64.4% from Dec 13, 2017 to Mar 20, 2020, recovered Dec 29, 2020
- Best single session
- +32.1% on Sep 7, 2021
- Worst single session
- -25.4% on Mar 20, 2020
- Volatility, 1 year annualised
- 51.5%
- Sessions closing higher, 1 year
- 47%
- Growth of 1 since 2017
- 2.1×
- Best calendar year
- 2021, +91%
- Worst calendar year
- 2019, -25%
GCL 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 Sep 22, 2017; 2026 runs to Nov 13, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | £0.6000 | £0.9295 | £0.3950 | £0.4040 | -32.7% | 90.8M | 199 |
| 2025 | £0.4525 | £0.6800 | £0.2660 | £0.6000 | +32.6% | 146.4M | 183 |
| 2024 | £0.5400 | £0.6680 | £0.3700 | £0.4525 | -16.2% | 93.8M | 176 |
| 2023 | £0.4300 | £0.5900 | £0.3375 | £0.5400 | +26.3% | 78.2M | 179 |
| 2022 | £0.5300 | £0.7700 | £0.3100 | £0.4275 | -19.3% | 101.4M | 174 |
| 2021 | £0.2850 | £0.7500 | £0.2506 | £0.5300 | +91.3% | 82.9M | 191 |
| 2020 | £0.1550 | £0.2900 | £0.0850 | £0.2770 | +78.7% | 41.2M | 150 |
| 2019 | £0.2000 | £0.2150 | £0.1400 | £0.1550 | -25.5% | 29.6M | 142 |
| 2018 | £0.2241 | £0.2520 | £0.1300 | £0.2080 | -6.5% | 43.8M | 174 |
| 2017 | £0.1923 | £0.2800 | £0.1700 | £0.2225 | n/a | 24.2M | 62 |
GCL monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| November 2026 | £0.4040 | -14.0% |
| October 2026 | £0.4700 | -14.5% |
| September 2026 | £0.5500 | -18.3% |
| August 2026 | £0.6730 | +22.4% |
| July 2026 | £0.5500 | -13.0% |
| June 2026 | £0.6320 | -6.8% |
| May 2026 | £0.6780 | -6.4% |
| April 2026 | £0.7240 | +8.9% |
| March 2026 | £0.6650 | -14.3% |
| February 2026 | £0.7760 | -4.2% |
| January 2026 | £0.8100 | +35.0% |
| December 2025 | £0.6000 | +9.1% |
About the GCL data
Daily bars. 1,630 sessions from Sep 22, 2017 to Nov 13, 2026, one row per LSE 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 Nov 4, 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 LSE trading days; minute timestamps are UTC. Prices are in GBP. 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 Sep 22, 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/lse%3AGCL/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on LSE
Common questions
GCL share price history
