LSE · ALRT · stock
Defence Holdings PLC (ALRT) stock price history
Every LSE trading session of Defence Holdings PLC from Oct 2, 2020 to Nov 12, 2026: 1,374 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.
ALRT adjusted close, 2020 to 2026
- £0.0825
- All time high, 2020
- £0.0230
- 52 week high, £0.0045 low
- 1,374
- Daily sessions since 2020
Last updated Nov 12, 2026, the last stored session. Refreshes after each trading day. Full 2020 to 2026 series and minute bars.
ALRT key facts
- Defence Holdings PLC (ALRT) closed at £0.0045 on Nov 12, 2026 on LSE.
- ALRT's all time high close is £0.0825, set on Oct 6, 2020; its all time low close is £0.0003 on Nov 25, 2024.
- ALRT's 52 week range is £0.0045 to £0.0230.
- ALRT returned -79.0% over the year to Nov 12, 2026 and -87.3% over five years.
- Since Oct 2, 2020 ALRT returned -94%, -37.7% a year compounded.
- ALRT's deepest drawdown was -99.6% from Oct 6, 2020 to Nov 25, 2024.
- DataCedar holds 1,374 daily sessions of ALRT history from Oct 2, 2020 and minute bars from Sep 17, 2026, adjusted for splits and dividends, served by the API under a key.
ALRT price chart, 2020 to 2026
ALRT returns
Price return from the last close on or before the window start to Nov 12, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | -33.3% |
| 3 months | -56.1% |
| 6 months | -55.0% |
| Year to date | -76.9% |
| 1 year | -79.0% |
| 3 years | -30.8% |
| 5 years | -87.3% |
| 10 years | n/a |
| Since Oct 2, 2020 | -94.5% |
| Compound annual growth, 6.1 years | -37.7% |
ALRT records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- £0.0825 on Oct 6, 2020
- All time low close
- £0.0003 on Nov 25, 2024
- 52 week high
- £0.0230 on Dec 30, 2025
- 52 week low
- £0.0045 on Nov 10, 2026
- Deepest drawdown
- -99.6% from Oct 6, 2020 to Nov 25, 2024, not yet recovered
- Best single session
- +276.9% on Jun 9, 2025
- Worst single session
- -58.3% on Aug 1, 2024
- Volatility, 1 year annualised
- 100.5%
- Sessions closing higher, 1 year
- 33%
- Best calendar year
- 2025, +4,505%
- Worst calendar year
- 2024, -95%
ALRT 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. 2020 starts on Oct 2, 2020; 2026 runs to Nov 12, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | £0.0177 | £0.0220 | £0.0045 | £0.0045 | -74.3% | 4.2B | 216 |
| 2025 | £0.0004 | £0.0490 | £0.0004 | £0.0175 | +4,505% | 8.9B | 227 |
| 2024 | £0.0080 | £0.0100 | £0.0003 | £0.0004 | -95.3% | 1.4B | 217 |
| 2023 | £0.0130 | £0.0170 | £0.0041 | £0.0080 | -38.5% | 774.9M | 221 |
| 2022 | £0.0320 | £0.0450 | £0.0115 | £0.0130 | -59.4% | 785.2M | 196 |
| 2021 | £0.0565 | £0.0820 | £0.0292 | £0.0320 | -42.9% | 837.3M | 242 |
| 2020 | £0.0900 | £0.1000 | £0.0500 | £0.0560 | n/a | 124.2M | 55 |
ALRT monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| November 2026 | £0.0045 | -25.0% |
| October 2026 | £0.0060 | -27.3% |
| September 2026 | £0.0082 | -2.9% |
| August 2026 | £0.0085 | -21.3% |
| July 2026 | £0.0108 | -16.0% |
| June 2026 | £0.0129 | +11.8% |
| May 2026 | £0.0115 | +4.5% |
| April 2026 | £0.0110 | -15.4% |
| March 2026 | £0.0130 | -4.4% |
| February 2026 | £0.0136 | -7.8% |
| January 2026 | £0.0148 | -15.7% |
| December 2025 | £0.0175 | +6.1% |
About the ALRT data
Daily bars. 1,374 sessions from Oct 2, 2020 to Nov 12, 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 2, 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 Oct 2, 2020, 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%3AALRT/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on LSE
Common questions
ALRT share price history
