Copper With AntofagastaNarrow moat

Marubeni (8002) — moat facet

Marubeni's copper profit nearly tripled in a year on flat volume, which makes it a copper price with a partner attached.

Marubeni's copper is in Chile and it is Antofagasta's. It holds 12.5% of Los Pelambres, 30.0% of Centinela and 30.0% of Antucoya, all operated by Antofagasta Minerals1, and together they give it about 160,000 tonnes a year of equity production capacity2.

Chilean copper holding, net profit (¥ bn)20.7Year to Mar 202557.8Year to Mar 2026Equity sales 134 kt then 132 kt; Marubeni IR presentation, May 2026
Nearly three times the profit on slightly less copper.

The holding company for those stakes, Marubeni LP Holding, earned ¥57.8 billion in the year to March 2026, up from ¥20.7 billion3. Equity sales volume barely changed, 134 thousand tonnes to 132 thousand4, so the rise was price. The company puts the sensitivity at about ¥1.3 billion of net profit for each $100 a tonne5.

What makes this a moat rather than a trade is the partnership's age: Marubeni bought into Centinela in 20086 and has added to it since, including the Los Pelambres increase that took capacity from about 150,000 tonnes to 160,0007. Antofagasta chooses minority partners for expansions, and a partner that has stayed through a ¥60.3 billion write-down8 is one it has reason to keep.

The mines are large by any standard. Los Pelambres has a capacity of about 400,000 tonnes of copper a year, Centinela about 100,000 tonnes of cathode and 200,000 tonnes of concentrate, and Antucoya about 80,000 tonnes9. Marubeni's copper exposure is about ¥590.0 billion10, the largest single resource exposure it has, and Chile is its third-largest country exposure at ¥677.2 billion gross11.

The profit is the most price-sensitive in the company. In the April-June 2026 quarter the Metals & Mineral Resources segment earned ¥42.0 billion against ¥28.7 billion a year earlier, on higher copper, coal and aluminium prices12.

The measure is equity sales volume. At 132 thousand tonnes the profit is a copper-price bet; rising volume from the Centinela expansion is what would make it a larger business.

Moat trajectory: Widening

Capacity rose from about 150,000 to 160,000 tonnes with the Los Pelambres addition and the Centinela expansion is scheduled to take it toward 200,000 in 2027. Volume sold was flat in the latest year, so the widening is still ahead.

The number that tests this moat
Reported
Marubeni LP Holding (Chilean copper) net profit
¥57.8bn against ¥20.7bn, year to March 2026

Price drove the rise; watch equity copper volume, 132 thousand tonnes, for the part Marubeni's own decisions control.

Source: Marubeni full-year IR presentation, May 2026 ↗
⚠ Threats to the moat
⚠ THREAT 01
The Partner Runs the Mine
Marubeni's copper is one relationship in one country, and the relationship's other party makes every decision.
References
  1. ReportedIt holds 12.5% of Los Pelambres, 30.0% of Centinela and 30.0% of Antucoya, all operated by Antofagasta Minerals, and together they give it about 160,000 tonnes a year of equity production capacity.
    Marubeni Corporation, full-year IR presentation for the fiscal year ended March 31, 2026 - resource asset table (stakes, capacities, partners and exposures), equity volumes, sensitivities to commodity prices and currencies, and the Middle East risk scenarios and risk-management framework. — FY to March 2026 · publ. 1 May 2026 · source ↗
  2. ReportedIt holds 12.5% of Los Pelambres, 30.0% of Centinela and 30.0% of Antucoya, all operated by Antofagasta Minerals, and together they give it about 160,000 tonnes a year of equity production capacity.
    Marubeni Integrated Report 2026, introduction and At a Glance - the company history from 1858 and the market positions the company states for its businesses. — 2026 · publ. 2026 · source ↗
  3. ReportedThe holding company for those stakes, Marubeni LP Holding, earned ¥57.8 billion in the year to March 2026, up from ¥20.7 billion.
    Marubeni Corporation, full-year IR presentation for the fiscal year ended March 31, 2026 - net profit of major group companies by segment, with ownership and business descriptions. — FY to March 2026 · publ. 1 May 2026 · source ↗
  4. ReportedEquity sales volume barely changed, 134 thousand tonnes to 132 thousand, so the rise was price.
    Marubeni Corporation, full-year IR presentation for the fiscal year ended March 31, 2026 - resource asset table (stakes, capacities, partners and exposures), equity volumes, sensitivities to commodity prices and currencies, and the Middle East risk scenarios and risk-management framework. — FY to March 2026 · publ. 1 May 2026 · source ↗
  5. ReportedThe company puts the sensitivity at about ¥1.3 billion of net profit for each $100 a tonne.
    Marubeni Corporation, full-year IR presentation for the fiscal year ended March 31, 2026 - resource asset table (stakes, capacities, partners and exposures), equity volumes, sensitivities to commodity prices and currencies, and the Middle East risk scenarios and risk-management framework. — FY to March 2026 · publ. 1 May 2026 · source ↗
  6. ReportedWhat makes this a moat rather than a trade is the partnership's age: Marubeni bought into Centinela in 2008 and has added to it since, including the Los Pelambres increase that took capacity from about 150,000 tonnes to 160,000.
    Marubeni Integrated Report 2026, introduction and At a Glance - the company history from 1858 and the market positions the company states for its businesses. — 2026 · publ. 2026 · source ↗
  7. ReportedWhat makes this a moat rather than a trade is the partnership's age: Marubeni bought into Centinela in 2008 and has added to it since, including the Los Pelambres increase that took capacity from about 150,000 tonnes to 160,000.
    Marubeni Corporation, Presentation Materials, June 2026 - company overview, copper equity production capacity by mine, GC2027 targets and capital allocation, and the growth record since the year to March 2021. — June 2026 · publ. June 2026 · source ↗
  8. ReportedAntofagasta chooses minority partners for expansions, and a partner that has stayed through a ¥60.3 billion write-down is one it has reason to keep.
    Marubeni Corporation, Summary of Consolidated Financial Results for the fiscal year ended March 31, 2020 - the net loss and the after-tax impairments on Gulf of Mexico oil and gas, Chilean copper, the UK North Sea, Aircastle and Gavilon. — FY to March 2020 · publ. 7 May 2020 · source ↗
  9. ReportedLos Pelambres has a capacity of about 400,000 tonnes of copper a year, Centinela about 100,000 tonnes of cathode and 200,000 tonnes of concentrate, and Antucoya about 80,000 tonnes.
    Marubeni Corporation, full-year IR presentation for the fiscal year ended March 31, 2026 - resource asset table (stakes, capacities, partners and exposures), equity volumes, sensitivities to commodity prices and currencies, and the Middle East risk scenarios and risk-management framework. — FY to March 2026 · publ. 1 May 2026 · source ↗
  10. ReportedMarubeni's copper exposure is about ¥590.0 billion, the largest single resource exposure it has, and Chile is its third-largest country exposure at ¥677.2 billion gross.
    Marubeni Corporation, full-year IR presentation for the fiscal year ended March 31, 2026 - resource asset table (stakes, capacities, partners and exposures), equity volumes, sensitivities to commodity prices and currencies, and the Middle East risk scenarios and risk-management framework. — FY to March 2026 · publ. 1 May 2026 · source ↗
  11. ReportedMarubeni's copper exposure is about ¥590.0 billion, the largest single resource exposure it has, and Chile is its third-largest country exposure at ¥677.2 billion gross.
    Marubeni Integrated Report 2026, Section 6 Corporate Data - the twelve-year financial summary (revenue, gross trading profit, operating profit, share of associates, net profit, adjusted net profit, EPS, dividends, ROE, ROA, net D/E, cash flows, total assets and equity), shareholder composition, employees and gross risk exposure by country. — FY to March 2015 - FY to March 2026 · publ. 2026 · source ↗
  12. ReportedIn the April-June 2026 quarter the Metals & Mineral Resources segment earned ¥42.0 billion against ¥28.7 billion a year earlier, on higher copper, coal and aluminium prices.
    Marubeni Corporation, Summary of Consolidated Financial Results for the three months ended June 30, 2026 (IFRS) - revenue, operating profit and net profit, segment results, progress against the full-year forecast, the balance sheet at 30 June 2026, and the revised GC2027 capital allocation and new share buyback. — April-June 2026 · publ. 3 August 2026 · source ↗
Sources
Generated September 24, 2026