NYSE American · GMTL · stock
Guardian Metal Resources PLC (GMTL) stock price history
Every NYSE American trading session of Guardian Metal Resources PLC from Mar 20, 2026 to Sep 28, 2026: 132 daily bars, adjusted for splits and dividends, with minute bars from Jul 13, 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.
GMTL adjusted close, 2026 to 2026
- $20.64
- All time high, 2026
- $22.21
- 52 week high, $8.60 low
- 132
- Daily sessions since 2026
Last updated Sep 28, 2026, the last stored session. Refreshes after each trading day. Full 2026 to 2026 series and minute bars.
GMTL key facts
- Guardian Metal Resources PLC (GMTL) closed at $9.16 on Sep 28, 2026 on NYSE American.
- GMTL's all time high close is $20.64, set on Apr 17, 2026; its all time low close is $9.16 on Sep 28, 2026.
- GMTL's 52 week range is $8.60 to $22.21.
- GMTL's deepest drawdown was -55.6% from Apr 17, 2026 to Sep 28, 2026.
- DataCedar holds 132 daily sessions of GMTL history from Mar 20, 2026 and minute bars from Jul 13, 2026, adjusted for splits and dividends, served by the API under a key.
GMTL price chart, 2026 to 2026
GMTL returns
Price return from the last close on or before the window start to Sep 28, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | -28.2% |
| 3 months | -39.4% |
| 6 months | -46.9% |
| Year to date | n/a |
| 1 year | n/a |
| 3 years | n/a |
| 5 years | n/a |
| 10 years | n/a |
| Since Mar 20, 2026 | -32.1% |
GMTL records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- $20.64 on Apr 17, 2026
- All time low close
- $9.16 on Sep 28, 2026
- 52 week high
- $22.21 on Apr 17, 2026
- 52 week low
- $8.60 on Jul 16, 2026
- Deepest drawdown
- -55.6% from Apr 17, 2026 to Sep 28, 2026, not yet recovered
- Best single session
- +13.2% on Sep 8, 2026
- Worst single session
- -14.5% on Jun 5, 2026
- Volatility, 1 year annualised
- 90.8%
- Sessions closing higher, 1 year
- 44%
GMTL 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. 2026 starts on Mar 20, 2026; 2026 runs to Sep 28, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | $13.50 | $22.21 | $8.60 | $9.16 | n/a | 29.8M | 132 |
GMTL monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| September 2026 | $9.16 | -28.0% |
| August 2026 | $12.72 | +35.3% |
| July 2026 | $9.40 | -32.9% |
| June 2026 | $14.01 | -11.3% |
| May 2026 | $15.80 | -7.0% |
| April 2026 | $16.99 | -2.8% |
| March 2026 | $17.48 | n/a |
About the GMTL data
Daily bars. 132 sessions from Mar 20, 2026 to Sep 28, 2026, one row per NYSE American 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 Jul 13, 2026 forward, most recent session Sep 25, 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 NYSE American trading days; minute timestamps are UTC. Prices are in USD. 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 Mar 20, 2026, 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/GMTL/bars?timeframe=1Day&adjustment=all&limit=50000" \
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Common questions
GMTL share price history
