The MoatThin moat

KGHM Polska Miedź (KGH) — moat facet

An irreplaceable orebody attached to the least certain price, earning its cost of capital only in the years copper is expensive.

A moat is supposed to let a company keep something. KGHM keeps very little, and what protects it protects the asset rather than the earnings.

Return on invested capital against a 10% hurdleWACC ~10,0%5,1%20196,5%202016,3%202110,3%20226,9%202410,5%20252023 omitted - an operating loss makes the ratio meaningless
Above the hurdle in the copper booms and below it the rest of the time. That is an option on a commodity, not a moat.

Start with what is genuinely rare. Under Lower Silesia sits a copper deposit that dips from a few hundred metres down to about 1,500, holding 1 858 259 thousand tonnes of ore, 30 387 thousand tonnes of copper and 91 837 tonnes of silver — enough, on KGHM's own reckoning, for another forty to fifty years of mining1. It is permitted, it is developed, its shafts are sunk, and no comparable European deposit is going to be opened by anyone else in the working lifetime of anybody reading this. That is a real barrier, and it is the first of the four facets that follow.

The second is the one that makes the first economic. KGHM holds first place among the world's largest silver mines and second among the world's largest silver producers2, and the silver comes up in the same rock as the copper at no incremental cost of extraction. Strip the precious-metal credit out and the cost of a tonne of copper is three times what it is with the credit in3. Without silver, the mine would be marginal at almost any copper price it has seen.

The third is metallurgical. KGHM refines substantially more copper than it mines — 570,9 thousand tonnes of electrolytic copper in 2025 against roughly 400 thousand from its own concentrate, the gap bought in as third-party material at a cost of 8 335 million złoty4. The smelters are an asset in their own right, and they earn a toll on other people's metal.

The fourth is that KGHM is the only copper company Poland has: 34 543 employees5, one region, and an explicit strategic mandate to secure raw materials for Poland and Europe. That is protection of a kind, and it is also precisely why the tax exists.

Now the arithmetic that keeps this rated thin. Return on invested capital, measured on operating profit and the joint venture together against the capital employed, has been roughly 6,5%, 16,3%, 10,3%, negative, 6,9% and 10,5% across 2020 to 2025. Against a cost of capital near 10% for a Polish miner, that is three good years in six, and the good ones are the ones when copper was expensive. A business that earns its cost of capital only when its output price is high does not have a moat in any sense that matters to an owner; it has an option on a commodity, wrapped around a very large fixed cost.

The counter-argument is worth stating properly, because it is not weak. Reserves of this size and grade inside the European Union, with the permits already granted and the metallurgy already built, are scarce and getting scarcer. If copper is structurally short for a decade — and the price at record levels in August 2026 is one reading of that — then owning tonnes at all is worth more than owning them cheaply.

But that is an argument about the metal, not about the company. Nothing on these four pages describes a mechanism by which KGHM captures more of a rising price than any other miner, or loses less of a falling one. The minerals extraction tax makes the second half worse: it is charged on production and price rather than on profit, so it rises into strength and does not retreat into weakness, and in 2023 KGHM paid 3 496 million złoty of it while losing 3 691 million for the year.

The verdict is thin, and it is thin for the reason Barrick is: this is a price-taker. What separates KGHM from a gold miner is that it is a price-taker twice over, in two metals, one of which quietly pays for the other. The number that would change the verdict is the cash cost after by-product credits: at 3,16 dollars a pound in 20256, KGHM is a high-cost producer of a commodity, and no orebody, however good, fixes that from the outside.

Moat trajectory: Holding steady

Nothing structural moved. The orebody is the same orebody, the smelters are the same smelters, and the cash cost has drifted up for five years. What changed between 2023's loss and 2026's record is the price of copper and silver, which is precisely the point of a thin rating.

The number that tests this moat
Moat Explorer calc
Return on invested capital against a 10% hurdle
10,5% in 2025; below the hurdle in four of the last six years

NOPAT including the Sierra Gorda joint-venture result, over average invested capital of assets less current liabilities. The series runs about 5,1%, 6,5%, 16,3%, 10,3%, negative, 6,9% and 10,5% for 2019 to 2025. A business that clears its cost of capital only when copper is expensive owns an option on a commodity rather than a moat. Falling below the hurdle in a year of high metal prices would end the argument entirely.

How it's calculated: NOPAT = (operating profit + profit on involvement in joint ventures) x (1 - effective tax rate), over the average of opening and closing invested capital, where invested capital = total assets less current liabilities. The 10% hurdle is an assumed cost of capital for a Polish miner, not a filed figure.
Source: KGHM Group Management Board's report on activities in 2025 ↗
Aspects of the moat
DIG DEEPER 01
The Ore Under Lower Silesia
1,86 billion tonnes of ore at about 1,6% copper, permitted, developed and good for another forty to fifty years.
DIG DEEPER 02
The Silver That Pays for the Copper
Two thirds of the cost of KGHM's copper is paid for by metals that come up the same shaft at no extra cost.
DIG DEEPER 03
More Copper Refined Than Mined
A third of KGHM's refined copper is made from bought-in material, which is a second business sharing the smelters.
DIG DEEPER 04
The Only Copper Company Poland Has
34 543 people, one region and a written state mandate - and a tax that exists for exactly those reasons.
References
  1. ReportedUnder Lower Silesia sits a copper deposit that dips from a few hundred metres down to about 1,500, holding 1 858 259 thousand tonnes of ore, 30 387 thousand tonnes of copper and 91 837 tonnes of silver — enough, on KGHM's own reckoning,...
    KGHM Polska Miedz - mining and enrichment (geological resources at 31 December 2025 of 1 858 259 thousand tonnes of ore containing 30 387 thousand tonnes of copper and 91 837 tonnes of silver; a deposit dipping from a few hundred metres to 1 500; the statement that current deposits will suffice for the next 40-50 years of mining activities; concentrator output of about two million tonnes of concentrate at 23% copper a year; and more than one and a half billion tonnes of output and 23 million tonnes of copper produced over sixty years) — 2025 · publ. 2026 · source ↗
  2. ReportedKGHM holds first place among the world's largest silver mines and second among the world's largest silver producers, and the silver comes up in the same rock as the copper at no incremental cost of extraction.
    KGHM Polska Miedz S.A. Group - Management Board's report on activities in the first half of 2026, production, unit costs and employment (electrolytic copper of 291,5 thousand tonnes of which 183,6 thousand from own concentrate, metallic silver of 696,7 tonnes, the pre-precious-metals-credit unit cost of 52 201 złoty a tonne against a total unit cost of 17,415, C1 of 2,44 USD/lb, average group employment of 34 543 including 18 870 at the parent, and payable copper from the international assets of 59,5 thousand tonnes of which Sierra Gorda 40,2 and Robinson 17,7) — H1 2026 · publ. August 2026 · source ↗
  3. ReportedStrip the precious-metal credit out and the cost of a tonne of copper is three times what it is with the credit in.
    KGHM Polska Miedz S.A. Group consolidated financial statements for 2025 (group revenue of 36 366m złoty with the parent at 30 964m and KGHM INTERNATIONAL at 3 439m; parent copper revenue of 22 378m and silver revenue of 6 133m; minerals extraction tax of 4 693m against 3 865m in 2024 and 3 496m in 2023; employee benefits of 6 303m; purchased metal-bearing materials of 8 335m; parent net profit of 1 946m against a group profit of 3 688m; total assets of 58 240m, equity of 32 898m and involvement in the Sierra Gorda joint venture of 10 250m including 8 436m of loans) — FY2023-FY2025 · publ. 10 March 2026 · source ↗
  4. ReportedKGHM refines substantially more copper than it mines — 570,9 thousand tonnes of electrolytic copper in 2025 against roughly 400 thousand from its own concentrate, the gap bought in as third-party material at a cost of 8 335 million złoty.
    KGHM Polska Miedz S.A. Group consolidated financial statements for 2025 (group revenue of 36 366m złoty with the parent at 30 964m and KGHM INTERNATIONAL at 3 439m; parent copper revenue of 22 378m and silver revenue of 6 133m; minerals extraction tax of 4 693m against 3 865m in 2024 and 3 496m in 2023; employee benefits of 6 303m; purchased metal-bearing materials of 8 335m; parent net profit of 1 946m against a group profit of 3 688m; total assets of 58 240m, equity of 32 898m and involvement in the Sierra Gorda joint venture of 10 250m including 8 436m of loans) — FY2023-FY2025 · publ. 10 March 2026 · source ↗
  5. ReportedThe fourth is that KGHM is the only copper company Poland has: 34 543 employees, one region, and an explicit strategic mandate to secure raw materials for Poland and Europe.
    KGHM Polska Miedz S.A. Group - Management Board's report on activities in the first half of 2026, the Strategy of the KGHM Group 2055+ approved on 3 July 2026 and its targets (payable copper production above 730 thousand tonnes a year of which about 590 thousand from Polish assets including 180 thousand from scrap, adjusted EBITDA averaging 12 billion złoty at a 25,6% margin, capital expenditure above 32 billion złoty across 2026-2030, at least 220 MW of installed renewable capacity, the Sierra Gorda fourth grinding line at 725 million dollars raising output about 20% while shortening the life of mine by three years, the Deep Glogow Deposit Access Program, and shareholders including the State Treasury at 31,79%) — 2026-2030 and beyond · publ. August 2026 · source ↗
  6. ReportedThe number that would change the verdict is the cash cost after by-product credits: at 3,16 dollars a pound in 2025, KGHM is a high-cost producer of a commodity, and no orebody, however good, fixes that from the outside.
    KGHM Polska Miedz S.A. Group - Management Board's report on activities in 2025, the production and unit-cost record (electrolytic copper of 570,9 thousand tonnes against 588,7 in 2024, 592,4 in 2023 and 560,4 in 2020; metallic silver of 1 323 tonnes against 1 403 in 2023; C1 payable copper production cost of 3,16 USD/lb for the Polish assets against 1,03 for KGHM INTERNATIONAL and 0,86 for Sierra Gorda; group payable copper of 710,0 thousand tonnes against 753,7 in 2021; wire rod and wire production of 279,9 thousand tonnes; and world mined silver production of about 25,3 thousand tonnes) — FY2018-FY2025 · publ. 10 March 2026 · source ↗
Sources
Generated September 24, 2026