Investment trust
GCL Geiger Counter Limited
ISIN GB00B15FW330London Stock Exchange: GCL
- Investment trusts
- Investment trust
- ISA
- SIPP
Latest close
LSE£0.404
on
As of , at least 15 min delayed
At a glance
As of 13/11/2026, GCL (Geiger Counter Limited, ISIN GB00B15FW330) closed at £0.404 on the London Stock Exchange. Over the five years to 13/11/2026 its price changed by −43.9% (income paid out is not included), or −56.2% after UK CPIH inflation.
Past returns
- 1 year to 13/11/2026
- −18.9%
- −21.7% after inflation (UK CPIH)
- 3 years to 13/11/2026
- −19.2%
- −27.0% after inflation (UK CPIH)
- 5 years to 13/11/2026
- −43.9%
- −56.2% after inflation (UK CPIH)
£1,000 put in five years ago would have been worth about £561 on 13/11/2026 — about £438 in today’s spending power, once price rises are taken out. Past performance is not a guide to future returns.
Returns: worked out from recorded daily closes. Inflation: UK CPIH, latest month published.
How we work it out:ReturnsReturns after inflationTotal returnReal returnCPIH
Calendar-year and 12-month returns
Calendar-year returns of Geiger Counter Limited in pounds (price only, income paid out not included): 2022 −19.3%, 2023 +26.3%, 2024 −9.5%, 2025 +24.9%; 2026 to 13/11/2026 −33.8%. Returns of Geiger Counter Limited in pounds (price only, income paid out not included) over the 12 months to 30/09/2026: −13.2%; to 30/09/2025: +39.3%; to 30/09/2024: −12.5%; to 30/09/2023: +13.0%; to 30/09/2022: −8.0%.
| Year | Return | After inflation | Return shown as a bar |
|---|---|---|---|
| to | −33.8% | −35.9% | |
| to | +24.9% | +20.6% | |
| to | −9.5% | −12.6% | |
| +26.3% | +21.3% | ||
| −19.3% | −26.2% |
| 12 months to | Return | After inflation |
|---|---|---|
| from | −13.2% | −16.3% |
| from | +39.3% | +33.9% |
| from | −12.5% | −14.7% |
| from | +13.0% | +6.3% |
| from | −8.0% | −15.4% |
As of , inflation: UK CPIH
How we work it out:Calendar-year returnsWhat a calendar-year return isAccumulating and distributing
Risk: volatility and largest fall
Volatility (annualised)
50.5%over 5 years
| 1 year | 46.9% |
|---|---|
| 3 years | 45.0% |
| 5 years | 50.5% |
Annualised from weekly returns. Higher means bumpier.
- Largest fall since November 2021
- −60.0%
- From to
- Lowest 12-month return
- −50.0%
- 12 months to
- Highest 12-month return
- +141.8%
- 12 months to
- Below its highest weekly close since November 2021
- 52.2%
- High of , latest
In words: Volatility of Geiger Counter Limited in pounds, annualised from weekly returns to 13/11/2026: 46.9% over 1 year, 45.0% over 3 years, 50.5% over 5 years. Largest fall in the price of Geiger Counter Limited since November 2021, in pounds: −60.0% from 15/04/2022 to 04/04/2025. The lowest 12-month return of Geiger Counter Limited in pounds (price only, income paid out not included) since January 2021 was −50.0% (12 months to 14/04/2023); the highest was +141.8% (12 months to 17/04/2026). On 13/11/2026 the price of Geiger Counter Limited was 52.2% below its highest weekly close since November 2021 (23/01/2026), in pounds.
As of , price only — income paid out is not included
How we work it out:Risk figuresFallsVolatilityLargest fall
In plain English
Geiger Counter Limited is an investment trust.
You buy and sell it through a share-dealing account or platform during stock-market hours, like a share.
Investment trusts: Companies on the stock exchange that invest in other assets. Their share price can be above or below the value of what they own.
Key facts
- Ticker
- GCL
- ISIN
- GB00B15FW330
- Structure
- Investment trust
- A company listed on the stock exchange that invests in other assets; its price can differ from the value of what it holds.
- Domicile
- United Kingdom
- Can usually be held in
- ISA and SIPP
- Check with your platform: each decides which funds it offers.
- Currency hedged
- No
- Price currency
- Pounds (GBP)
- Category
- Investment trusts
Price chart
Over the last year, the closing price went from £0.505 on 14/11/2025 to £0.404 on 13/11/2026 (−20.0%). The lowest close shown was £0.404 on 13/11/2026 and the highest £0.845 on 23/01/2026.
One close a week. Before 31/07/2026 the closes are from the weekly price history for this listing; from then on, the closing prices we have recorded. Price only — income paid out is not included.
As of , at least 15 min delayed
Five years of prices, and after inflation
262 weekly closes, from 12/11/2021 to 13/11/2026. The same history in November 2026 pounds, adjusted with CPIH inflation.
Create a free account to see the 5-year price chart and the after-inflation chart
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How we work it out:Prices and returnsNAV and price
Risk and return in depth
Sharpe, Sortino and Calmar ratios
Sharpe, Sortino and Calmar ratios over 1, 3 and 5 years, from weekly returns in pounds.
With a free accountRolling returns
The full range of 254 rolling 12-month returns since January 2021, and of 150 rolling three-year returns, in pounds, with how often they were above zero.
With a free accountLargest falls and recoveries
The 3 largest falls since November 2021, in pounds, with how many weeks each took to reach its low and to recover.
With a free account
Create a free account to see the risk ratios, every rolling return and each large fall and its recovery
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Moves compared with a similar fund
Correlation and beta of weekly returns in pounds against iShares Core MSCI World UCITS ETF, over the three years to 13/11/2026 (154 weeks).
Pro
Pro — currently by invitation
Pro includes moves against a comparable fund
Pro is open by invitation while it is being built. There is nothing to buy. To ask about access, email [email protected].
Questions people ask
What is the ISIN of GCL?
The ISIN of GCL is GB00B15FW330. An ISIN identifies one exact share class of a fund; GCL is its ticker on the London Stock Exchange.
What were GCL’s returns in each of the last five years?
Calendar-year returns of GCL in pounds (price only, income paid out not included): 2022 −19.3%, 2023 +26.3%, 2024 −9.5%, 2025 +24.9%; 2026 to 13/11/2026 −33.8%. Past performance is not a guide to future returns.
How has GCL done after inflation?
Over the five years to 13/11/2026 GCL’s price changed by −43.9% (income paid out is not included), or −56.2% after UK CPIH inflation. Past performance is not a guide to future returns.
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Fund documents and methods
Methodology:ReturnsCategoriesAll methods
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