Sub-$2 Billion LSE-listed Miners: Small Caps, Big Margins, Zero Hype
May Critical Minerals Report: The LSE Edition
The (over)coverage problem hasn’t skipped the mining industry. More than ten sell-side analysts cover BHP (NYSE: BHP) and Rio Tinto (NYSE: RIO). The same goes for precious metals majors such as Agnico Eagle (NYSE: AEM) and Barrick Mining Corporation (NYSE: B). The outcome is that every bit of information is instantly priced and arbitraged away.
In this case, the informational edge is practically zero. To be frank, the informational edge is generally extinct, so we must rely on other edges (analytical, behavioral, market, etc.). More on edges, I elaborate here:
That said, there are still places where information is not disseminated instantly or distributed evenly, and informational edge still exists in some form.
A case in point is the London Stock Exchange, particularly the AIM segment, which hosts dozens of producing miners with a market cap below $2 billion. Many of these companies don’t own the moose pastures advertised by serial unicorn fart sellers. Quite the contrary: many of them mine ore, process it, sell concentrate or doré, and generate revenue. And the majority are covered by two or three analysts, occasionally by none at all.
Welcome to May mining intel, the LSE edition. Today, I dig into the LSE-listed miners as one of the few obscure corners of the market in search of an informational edge.
Why do LSE-listed names matter?
There are at least three reasons:
First, jurisdiction diversity: LSE-listed miners often operate in obscure jurisdictions such as Spain, Tanzania, or Bosnia. Those are places that carry real but quantifiable political risk, which the market systematically overprices relative to the actual probability of expropriation or regulatory change.
Second, currency optionality (and uncertainty): many of these companies earn revenue in USD (commodity prices) while incurring costs in local currencies (rand, real, tenge). A strong dollar compresses costs in USD terms, expanding margins beyond what the commodity price alone would suggest.
Third, M&A optionality: sub-$2 billion producers are prime acquisition targets for majors seeking to replenish depleting reserve bases without the ten-year permitting timelines of greenfield projects.
What follows is a preview of four LSE-listed miners. The companies are divided into two categories: industrial metals (copper) and precious metals (gold and PGMs). Let’s start with industrial metal miners.
Atalaya Mining (LSE: ATYM)
Atalaya is a copper play with a market cap of $1.51 billion. The company operates the Proyecto Riotinto copper mine in Spain’s Huelva province. Production hit 51,139 tonnes of copper in concentrate in 2025, at the top end of guidance. FY25 EBITDA surged 150% to $185 million. The company’s balance sheet is pristine: $138 million net cash before a $175 million fundraise in January 2026 to fast-track the Touro copper project and unlock polymetallic (zinc and precious metals) revenue from plant modifications.
At current copper prices above $5.5/lb and AISC of approximately $3.1/lb, the company delivers a cash margin of more than $2.00/lb. Atalya guided 2026 production at 50,000–54,000 tonnes, with 10% higher output expected in the second half. The growth pipeline is real: Touro (Spain), Masa Valverde (Spain), and San Dionisio (underground extension at Riotinto).
The stock has tripled in 12 months, yet still trades at roughly 4.9x EV/EBITDA (NTM) and 2.2x EV/Sales (NTM). This is a tangible discount to the 8.2x and 5.3x EV multiples commanded by Antofagasta Plc (LSE: ANTO; $45.6 billion market cap), a LSE-listed copper producer.
Central Asia Metals (LSE: CAML)
CAML operates two producing assets: the Kounrad SX-EW copper mine in Kazakhstan (100% owned, 14,000 tonnes of copper cathode per year) and the Sasa zinc-lead mine in North Macedonia (100% owned, 24,000 tonnes of zinc-in-concentrate and 30,000 tonnes of lead-in-concentrate). The business model is unusual: Kounrad is a solvent extraction–electrowinning operation that retreats waste dumps from a Soviet-era open pit, producing cathode copper at a cash cost of about $0.80/lb. It is one of the lowest-cost copper operations in the world.
CAML’s defining characteristic is its dividend policy. The company targets returning at least 30% of free cash flow to shareholders via dividends, and has maintained an unbroken dividend record since 2014. At a share price around 140p, the yield is roughly 4.0%. The company is also virtually debt-free.
The risks are jurisdictional. Kazakhstan is a functioning autocracy with a history of volatile tax policy. North Macedonia is an EU candidate state, but politically fragile. These risks are real but, in my view, over-discounted at current multiples. CAML is one of the cheapest copper miners globally. The company trades at 1.8x EV/EBITDA (NTM) and 0.9x EV/Sales (NTM).
Here is a summary table that compares ATYM and CAML.
Serabi Gold (LSE: SRB)
Serabi is a micro-cap gold producer operating in the Tapajós region of northern Brazil. The company runs two producing complexes: Palito (underground mine; 44,000 oz/year FY2025) and the Coringa Mine (underground mine; 18,000 oz/year FY2025; ramping to full production, expected to deliver 40,000 oz/year in 2028).
Revenue jumped from $95 million in 2024 to an expected $128 million in 2025, with net profit of $45 million. Serabi’s valuation is absurd: 3.3x EV/EBITDA (NTM) and 1.7x EV/Sales (NTM). For context, Pan African, a mid-cap gold miner listed on the LSE, trades at 4.7x EV/EBITDA (NTM) and 3.0x EV/Sales (NTM). That discount is a function of three factors: micro-cap status, an AIM listing (lower institutional visibility), and jurisdictional risk in Brazil.
The catalyst is the Coringa ramp-up. At $4,500 gold, an 80,000 oz producer with an AISC below $2,000 generates about $200 million FCF. At a 10x EV/FCF multiple, the company would be worth $2.0 billion. Today it trades at roughly $320 million. The re-rating potential is enormous.
Sylvania Platinum (LSE: SLP)
Sylvania is a niche PGM producer that retreats chrome tailings from the Bushveld Igneous Complex in South Africa. In practice, Sylvania processes tailings material from chrome mining operations under long-term contracts, extracting platinum, palladium, and rhodium at very low capital intensity. Production runs at approximately 75,000 4E ounces per year.
The investment case is a bet on PGM prices. The platinum market has been in a structural deficit for four consecutive years, according to WPIC data (a 240 koz supply shortfall only for 2026). Recycling is 17% below the ten-year average. South African supply is structurally constrained by power shortages and infrastructure decay. At Sylvania’s cash cost of $904/oz, the company is profitable across virtually all PGM price scenarios.
The company trades at attractive multiples: 2.7x EV/EBITDA (NTM) and 1.3x EV/Sales (NTM). For comparison, Valtera Platinum (LSE: VALT), a LSE-listed PGM major, trades at 5.3x EV/EBITDA (NTM) and 2.1x EV/Sales (NTM)
Here is a summary table that compares SRB and SLP.
Final Thoughts
The macro tailwinds are stacking in mining investors’ favor. Demand is driven by Global South demographics, data center glut for atoms, and global infrastructure renewal. Meanwhile, supply has been constrained by an acute shortage of personnel, a chronic lack of capex, and absurd green policies. The Middle East crisis just pours more fuel on the already burning fire. An illustrative case is copper, which holds above $5.5/lb as the sulfuric acid supply chain fractures. About the sulfuric acid crisis, you can read here:
Gold, as a gauge of geopolitical entropy, has surged past $4,000 (and has remained there) as central banks and investors flee to hard assets. PGMs are benefiting from the energy cost shock that constrains the South African supply. In short, for small-cap producers with lower-quartile AISC and clean balance sheets, this environment means a cash flow extravaganza, and the best part is that the market has not yet fully priced it.
The proverbial alpha in mining is not about finding the next Grasberg or Escondida. It is about finding the producers that the market has forgotten to price correctly. LSE is full of them.
If I grabbed your attention with the LSE Edition, check the Koala Edition:
PS: For more actionable asymmetric ideas on critical minerals and beyond, consider TheOldEconomy’s premium plans: Researcher and Strategist.
Thank you for being part of TheOldEconomy. Here’s to your continued growth and success, one wise decision at a time.
Invest wisely,
Mihail Stoyanov
Founder, TheOldEconomy
Everything described on this site, TheOldEconomy.substack.com, has been created for educational purposes only. It does not constitute advice, recommendation, or counsel for investing in securities.
The opinions expressed in such publications are those of the author and are subject to change without notice. You are advised to do your own research and discuss your investments with financial advisers to understand whether any investment suits your needs and goals.
This is a really thoughtful dive into a corner of the market most people skip right over. I love that you're looking at actual margins and fundamentals instead of just chasing whatever's trendy—that's where real opportunities tend to hide.
You need to add tharisa!! Even cheaper than sylvania.
https://smallcaptreasures.substack.com/p/43-fcf-yield-for-a-platinum-miner?r=1od1d5