GUARDIAN METAL RES PLC (GMTLF)
GMTLF moved a median of 0.00% 30 minutes after news, and -0.21% by the close. How GMTLF actually reacts to news — the realized, point-in-time move the market made, measured across 118 labeled events over the last three years with zero look-ahead.
GMTLF’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 20% | 98 |
| 30-min | 0.00% | 41% | 104 |
| 60-min | 0.00% | 45% | 105 |
| to close | -0.21% | 40% | 106 |
| Middle 50% of GMTLF reactions | -1.38% to +0.90% |
|---|---|
| Median reaction (30-min) | 0.00% |
| Measured reactions | 118 |
Half of all GUARDIAN METAL RES PLC news events land between -1.38% and +0.90% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
Email me when GMTLF moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to GMTLF's baseline. Nothing else.
Recent GMTLF events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 6-K Guardian Metal Resources For: Sep 30 | SEC filing · Form 6-K | SEC EDGAR | -0.55% | -0.55% | |
| Form EFFECT Guardian Metal Resources | SEC filing · Form EFFECT | SEC EDGAR | +0.00% | -7.11% | |
| Form 6-K Guardian Metal Resources For: Sep 21 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | +2.51% | |
| Form 20-F Guardian Metal Resources For: Jun 30 | SEC filing · Form 20-F | SEC EDGAR | +0.00% | -0.66% | |
| Form 6-K Guardian Metal Resources For: Sep 17 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | -0.66% | |
| Form POS AM Guardian Metal Resources | SEC filing · Form POS | SEC EDGAR | +0.00% | -0.66% | |
| Form 6-K Guardian Metal Resources For: Sep 14 | SEC filing · Form 6-K | SEC EDGAR | -0.94% | -0.94% | |
| Form 6-K Guardian Metal Resources For: Sep 10 | SEC filing · Form 6-K | SEC EDGAR | -1.22% | -5.77% | |
| Form 6-K Guardian Metal Resources For: Sep 08 | SEC filing · Form 6-K | SEC EDGAR | -7.72% | -0.41% | |
| Form 6-K Guardian Metal Resources For: Aug 28 | SEC filing · Form 6-K | SEC EDGAR | -5.46% | -7.23% | |
| Form 6-K Guardian Metal Resources For: Aug 27 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | -2.80% | |
| Form 6-K Guardian Metal Resources For: Aug 17 | SEC filing · Form 6-K | SEC EDGAR | -7.34% | -2.90% | |
| Form 6-K Guardian Metal Resources For: Jul 31 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | -6.00% | |
| Form 6-K Guardian Metal Resources For: Jul 21 | SEC filing · Form 6-K | SEC EDGAR | +0.44% | +7.56% | |
| Form 6-K Guardian Metal Resources For: Jul 17 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | +1.31% | |
| Form 6-K Guardian Metal Resources For: Jul 14 | SEC filing · Form 6-K | SEC EDGAR | +4.12% | -6.18% | |
| Form 6-K Guardian Metal Resources For: Jul 08 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | -3.21% | |
| Form 6-K Guardian Metal Resources For: Jun 30 | SEC filing · Form 6-K | SEC EDGAR | +1.87% | +7.84% | |
| Form 6-K Guardian Metal Resources For: Jun 29 | SEC filing · Form 6-K | SEC EDGAR | — | +0.00% | |
| Form 6-K Guardian Metal Resources For: Jun 26 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | +5.17% | |
| Form 6-K Guardian Metal Resources For: Jun 22 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | +1.18% | |
| Form 6-K Guardian Metal Resources For: Jun 17 | SEC filing · Form 6-K | SEC EDGAR | +0.78% | -4.48% | |
| Form 6-K Guardian Metal Resources For: Jun 11 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | +11.46% | |
| Form 6-K Guardian Metal Resources For: Jun 04 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | -4.02% | |
| Form 6-K Guardian Metal Resources For: May 21 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | +1.19% | |
| Form 6-K Guardian Metal Resources For: Apr 08 | SEC filing · Form 6-K | SEC EDGAR | — | +0.00% | |
| Form 6-K Guardian Metal Resources For: Apr 01 | SEC filing · Form 6-K | SEC EDGAR | -0.52% | -1.30% | |
| Form 6-K Guardian Metal Resources For: Mar 31 | SEC filing · Form 6-K | SEC EDGAR | +0.61% | +6.38% | |
| Form 6-K Guardian Metal Resources For: Mar 26 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | +0.24% | |
| Guardian Metal Resources PLC Announces Closing of U.S. Initial Public Offering | Press release | ACCESS Newswire | — | +10.28% | |
| Form EFFECT Guardian Metal Resources | SEC filing · Form EFFECT | SEC EDGAR | -1.10% | -8.06% | |
| Form CERT Guardian Metal Resources | SEC filing · Form CERT | SEC EDGAR | -5.63% | -0.99% | |
| Form F-1MEF Guardian Metal Resources | SEC filing · Form F-1MEF | SEC EDGAR | -1.10% | -8.06% | |
| Form 8-A12B Guardian Metal Resources | SEC filing · Form 8-A12B | SEC EDGAR | — | +0.87% | |
| Form F-1/A Guardian Metal Resources | SEC filing · Form F-1 | SEC EDGAR | +3.50% | +8.92% | |
| Guardian Metal Resources PLC Announces Launch of Roadshow for US Initial Public Offering | Press release | ACCESS Newswire | +3.50% | +8.92% | |
| Guardian Metal Resources PLC - Registration Statement Filed for Proposed U.S. IPO | Press release | ACCESS Newswire | -0.14% | +7.59% | |
| Form F-1 Guardian Metal Resources | SEC filing · Form F-1 | SEC EDGAR | -0.14% | +7.59% | |
| Guardian Metal Resources PLC Announces Interim Results | Press release | ACCESS Newswire | +0.00% | -4.62% | |
| Guardian Metal Resources PLC Announces Total Voting Rights | Press release | ACCESS Newswire | -5.17% | -4.98% | |
| Guardian Metal Resources PLC Announces Director/PDMR Shareholding | Press release | ACCESS Newswire | +0.29% | +3.90% | |
| Guardian Metal Resources PLC Announces Director's Dealing | Press release | ACCESS Newswire | — | +3.03% | |
| Guardian Metal Resources PLC Announces Total Voting Rights | Press release | ACCESS Newswire | -0.77% | -0.51% | |
| Guardian Metal Resources PLC Announces Pilot Mountain Pre-Feasibility Progress Update | Press release | ACCESS Newswire | +4.42% | +10.54% | |
| Guardian Metal Resources PLC Announces Pilot Mountain - Porphyry South Results | Press release | ACCESS Newswire | +0.00% | +2.24% | |
| Guardian Metal Resources PLC Announces Exercise of Options Warrants | Press release | ACCESS Newswire | — | -0.69% | |
| Guardian Metal Resources PLC Announces Board Update | Press release | ACCESS Newswire | +0.00% | -3.82% | |
| Guardian Metal Resources PLC Announces Board Changes | Press release | ACCESS Newswire | +0.00% | +4.29% | |
| Guardian Metal Resources PLC Announces Garfield Project Exploration Update | Press release | ACCESS Newswire | +0.00% | +4.29% | |
| Guardian Metal Resources PLC Announces Final Results | Press release | ACCESS Newswire | -2.01% | -4.03% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the GMTLF section they belong to.
Where else GMTLF is measured.
GMTLF earnings → · Analyst actions → · SEC filings →
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Every name we’ve measured, in one place.
How the numbers are made.
How is GUARDIAN METAL RES PLC's median reaction calculated?
Every labeled GMTLF news event is measured from its own timestamp: the last trade before the news is the base price, and the move is read at fixed horizons — 30 minutes of trading, then the close. The median across 118 events is what this page reports. Point-in-time, zero look-ahead: no event borrows information from a later one.
What counts as a positive reaction?
Any event whose price move is above zero at the horizon, relative to the last trade before the news timestamp. 41% of GMTLF's measured events are up at 30 minutes; the rest close the window flat or negative.
How often is this page updated?
The news table refreshes automatically as new events are labeled and priced. The reaction medians are re-pulled in batches from the dataset — the figures here are as of 2026-09-21.
Does GMTLF's past reaction predict its next one?
No. These are realized facts about past events, not forecasts. They describe a distribution — they say nothing certain about any future move.