Tungsten prices are up 557% since China restricted exports in February 2025. The US gets roughly 79% of its tungsten from China. And on March 20, Guardian Metal Resources (NYSE American: GMTL) listed on a US exchange for the first time, raising $60 million in a deal that priced at $13.50 per ADS — upsized from the original offering.
The timing is not a coincidence. Here’s whether the stock is actually worth owning after the IPO dust settles.
The Setup: Why Tungsten Is Having a Moment
China produced 67,000 of the 85,000 metric tons of tungsten mined globally in 2025, according to the US Geological Survey — roughly 79% of world supply. When Beijing added certain tungsten products to its export control list in February 2025 as part of the US-China trade dispute, shipments of restricted products dropped about 40% within a year, per Project Blue research.
The result: tungsten prices have gone from roughly $340 per metric ton unit in early 2025 to $2,250 today — a 557% jump, per Bloomberg’s March 15, 2026 report. Tungsten is used in ammunition, armor-piercing rounds, semiconductors, industrial cutting tools, and aerospace components. There’s no commercially viable substitute for most of those applications.
The US Department of Defense has flagged tungsten as a critical mineral. With the ongoing Iran war consuming military supply chains, that designation isn’t academic — it’s driving actual procurement decisions. The US imports essentially all of its tungsten, and the current supply situation has manufacturers genuinely squeezed.
What Guardian Metal Actually Has
Guardian Metal Resources (LON: GMET, NYSE American: GMTL) is an exploration-stage company. That’s important: they have no revenue, no production, and no mine. What they have is a significant resource estimate and a funded plan to advance it.
Pilot Mountain Project — Nevada
Pilot Mountain is the main asset: 5,908 acres of BLM land in Mineral County, Nevada, about 200 km southeast of Reno. The updated Mineral Resource Estimate (MRE), filed with the SEC under Regulation S-K 1300 in late 2025, breaks down as follows:
- Indicated: 8,694,000 tonnes at 0.206% WO₃, containing 17,900 tonnes of tungsten trioxide, plus silver (12.43 g/t, 3.475M oz), copper (0.085%, 7,400t), and zinc (0.315%, 27,400t)
- Inferred: 1,784,000 tonnes at 0.169% WO₃, containing 3,000 tonnes of WO₃, plus silver (12.00 g/t, 689K oz), copper (1,100t), and zinc (4,000t)
The resource is pit-constrained — designed for open-pit mining, which is the cheaper extraction method. The MRE covers only the Desert Scheelite deposit, one of four identified deposits on the property. Historical drilling has outlined exploration upside of 9-19Mt from additional Tier 1 and Tier 2 targets not yet included in the formal estimate.
A Pre-Feasibility Study (PFS) is currently underway. Active drilling (the 2025 campaign) has hit encouraging results: 21.6 meters at 0.20% WO₃ in PM25-043, a 33.9-meter sequence in PM25-045, and a high-grade intercept of 1.09% WO₃ in the Garnet Zone — an area not yet incorporated into the MRE.
Tempiute Project — Nevada
The second asset, Tempiute, is a past-producing tungsten-zinc-copper-silver mine with existing infrastructure on patented land. Guardian holds an option to earn up to 100% ownership. It’s earlier stage than Pilot Mountain but adds geographic and geological diversification within Nevada’s established tungsten districts.
The IPO: What They Raised and What It Costs
On March 20, 2026, Guardian Metal priced 4,444,400 American Depositary Shares at $13.50 each, raising approximately $60 million gross before underwriting fees. The deal was upsized — the original offering was smaller — suggesting institutional demand exceeded expectations. BMO Capital Markets ran the book, with Cantor Fitzgerald, D.A. Davidson, and Berenberg as co-managers.
Each ADS represents five ordinary shares trading on the London Stock Exchange (LON: GMET). The OTC ticker GMTLF trades at roughly $2.64 as of March 24, 2026 — which, at five shares per ADS, implies an ADS equivalent of about $13.20, essentially at the IPO price with modest early weakness.
The company also granted underwriters a 45-day option to purchase up to 666,660 additional ADSs at the IPO price. That option closes this week.
Market cap based on GMTLF data as of March 24: approximately $445M. The OTCQX market cap fluctuates with GBP/USD and ordinary share price movements; it’s worth watching the GMET.L price in London for the primary price signal until GMTL develops its own US trading volume and liquidity.
The Bull Case
1. The supply crisis is real and structural. This isn’t a short-term commodity spike. China’s tungsten export restrictions aren’t going away. Tungsten production outside China takes years to develop. Even if Guardian Metal is 4-5 years from first concentrate, the mining investment case is driven by a supply gap that’s measured in decades, not quarters.
2. Pilot Mountain is one of the largest known undeveloped tungsten assets in the US. The historical MRE (before the SK-1300 update) put total contained tungsten at 34,290 tonnes across indicated and inferred resources. That’s significant relative to US annual consumption. Desert Scheelite could meaningfully contribute to domestic military and industrial supply if developed.
3. Nevada is the right jurisdiction. No social license issues, established BLM permitting pathways, existing infrastructure nearby. Baseline environmental studies completed in 2025 found no federally listed species in the project area — a real permitting advantage that many critical mineral projects in other states don’t have.
4. The $60M raise is real funding. At current burn rates for an exploration-stage company with 5 full-time employees and outsourced technical work, $60M provides several years of drilling, PFS completion, and potentially pre-feasibility economic studies without additional dilution. This is meaningfully more capital than most junior miners operate with.
5. Silver, copper, and zinc credits matter. The co-product value from Pilot Mountain isn’t trivial. At current silver prices (~$30/oz), the 3.475 million ounces of indicated silver alone represent ~$100M in contained metal value. Copper and zinc credits reduce the effective cost of tungsten production, improving economics relative to pure-play tungsten deposits.
The Bear Case
1. No production, no revenue, no near-term path to either. Guardian Metal is exploration-stage. The PFS is underway but not complete. Permitting, construction, and ramp-up timelines for a new mine in the US typically run 7-12 years from discovery to first production. You’re investing in a resource, not a business.
2. Valuation reflects the tungsten hype, not the development timeline. A $445M market cap for an exploration company with no revenue and a $60M raise is pricing in a lot of optimism. The Price/Sales ratio is effectively infinite. If tungsten prices normalize — which could happen if China reverses restrictions, or if substitute materials improve — the thesis gets much harder to defend at current prices.
3. The ISS Governance score is 10 — the worst possible rating. Guardian Metal’s ISS Governance QualityScore as of March 1, 2026 is 10 across Audit, Board, and Compensation pillars (Shareholder Rights scored 1). Decile 10 indicates higher governance risk relative to peers. This isn’t a dealbreaker for a small exploration company, but it’s worth knowing, especially for institutional investors with governance mandates.
4. ADS/ordinary share structure creates friction. The 1:5 ADS-to-ordinary-share ratio means US investors are tied to UK listing mechanics, GBP/USD exchange rates, and London Stock Exchange trading norms. This adds complexity and potential liquidity discounts versus pure-play US listings.
5. Junior miners fail at a high rate. Most exploration-stage mining companies never make it to production. Technical challenges, capital markets risk, permitting delays, and commodity price reversals kill projects that looked promising on paper. Pilot Mountain has more going for it than most — established resource, funded management team, US jurisdiction — but the base rate for junior miner success is still unfavorable.
Key Metrics at a Glance
- Ticker: NYSE American: GMTL (ADS) | LON: GMET | OTCQX: GMTLF
- IPO Price: $13.50 per ADS (March 20, 2026)
- GMTLF Price: ~$2.64 per ordinary share (March 24, 2026)
- Market Cap: ~$445M (as of March 24)
- ADS Equivalent of GMTLF: ~$13.20 (5 ordinary shares)
- Gross IPO Proceeds: ~$60M (upsized)
- Stage: Exploration — no revenue, no production
- Primary Asset: Pilot Mountain, Nevada — 8.69Mt indicated at 0.206% WO₃
- Secondary Asset: Tempiute, Nevada — past-producing, option to earn 100%
- Contained WO₃ (Indicated): 17,900 tonnes at Pilot Mountain Desert Scheelite
- Silver Co-product (Indicated): 3.475 million ounces
- Tungsten Price: $2,250/MTU (March 2026, up 557% since Feb 2025)
- Employees: 5 full-time
- CEO: Oliver Friesen
- Analyst Coverage: 1 analyst, $4.00 target (GMTLF basis)
How It Compares to Other Critical Mineral Small Caps
The US critical minerals space has gotten crowded in 2026. UAMY (United States Antimony) is further along — actual production, 163% revenue growth, $354M in signed contracts — and trades at a ~$1.17B market cap with real revenue. JAGU and Spartan Metals represent the earlier-stage exploration end of the spectrum with less capital. Guardian Metal sits in between: more advanced than a pure exploration play, less advanced than a near-production story.
The broader theme — supply chains shifting away from China — is real and bipartisan. Both DoD funding priorities and executive orders have accelerated domestic critical mineral development since 2025. Tungsten specifically benefits from the defense procurement angle in a way that some other critical minerals don’t: it’s literally used in ammunition and armor-piercing rounds, which are being consumed at high rates in the current geopolitical environment.
The Verdict: Speculative, But the Thesis Is Real
Guardian Metal Resources is a legitimate exploration company in the right asset class at the right time. Pilot Mountain is a real deposit, Nevada is a real jurisdiction, and the tungsten supply crisis is a real structural problem. The $60M raise gives them real runway.
But you’re paying ~$445M for an exploration company with 5 employees and no revenue. That’s a lot of confidence in both the commodity cycle and the development timeline. At the IPO price of $13.50/ADS ($2.70/share equivalent), you were paying a reasonable entry for the macro thesis. If GMTL trades above $16-18/ADS on IPO momentum without a PFS catalyst to justify it, you’re getting well into speculative territory where the tungsten price rally is fully baked in.
If you believe tungsten stays elevated and the PFS comes in strong: Compelling long-term position, accumulate under $13/ADS (watch GMTLF for the sub-$2.60/share equivalent signal). Set a 3-5 year timeline and don’t put in more than you’d be comfortable losing.
If you’re skeptical of the commodity cycle or the development timeline: Watch the PFS results and the 2026 drill program assays before committing. The Garnet Zone high-grade results (up to 1.09% WO₃) are worth watching — if those translate into a resource update, the thesis gets materially stronger.
The near-term catalyst that matters most: the remaining 2026 drill assay results (REG-26-27, REG-26-28 equivalent holes at Pilot Mountain) and the PFS completion timeline. Both should land in H2 2026 and will either validate or challenge current valuations.
This is not financial advice. Do your own research. I hold no position in GMTL, GMET, or GMTLF.