Antofagasta's H1 2026 EBITDA margin hit 63.4% on a record $6.19-a-pound realized copper price, even as lower output at Los Pelambres and Centinela — worsened by a July storm — forced a cut to full-year production guidance.
At a glance
- Antofagasta's H1 2026 revenue rose 18% to $4.5 billion on a record realized copper price of $6.19 a pound, up 36% year-on-year.
- EBITDA rose 27% to $2.8 billion, with margin reaching 63.4%, even as copper production fell 9.5% year-on-year to 285,000 tonnes.
- Profit before tax surged 72% to $2.0 billion; net cash costs fell 8% and the competitiveness program delivered $67 million of a $110 million full-year savings target.
- Operating cash flow rose 53% to $2.8 billion; the board declared an interim dividend of 30.1 cents a share, up 81% year-on-year and representing 35% of underlying earnings.
What happened
Chilean copper miner Antofagasta reported first-half 2026 revenue of $4.5 billion, up 18% year-on-year, driven by a record realized copper price of $6.19 a pound, up 36% from a year earlier, even as copper production fell 9.5% to 285,000 tonnes. EBITDA rose 27% to $2.8 billion, with the EBITDA margin reaching 63.4% — among the highest of any pure-play copper producer — while profit before tax surged 72% to $2.0 billion. Net cash costs fell 8% and the company's competitiveness program delivered $67 million in savings, on track for a full-year target of $110 million. Operating cash flow rose 53% to $2.8 billion, and the board declared an interim dividend of 30.1 cents a share, up 81% year-on-year. Antofagasta lowered its full-year 2026 copper production guidance to 625,000-655,000 tonnes from 650,000-700,000 tonnes, citing lower output at its Los Pelambres and Centinela mines and a severe July storm that forced a precautionary shutdown at Los Pelambres in Chile's Coquimbo region.
The details
Antofagasta's first half shows what a record copper price can do to a miner's margins even when the mines themselves are producing less. Revenue rose 18% to $4.5 billion, a healthy but unremarkable growth rate on its own — the real story sits in EBITDA, which grew 27% to $2.8 billion, and in the 63.4% margin that resulted, near the top of the range for any pure-play copper producer globally. The gap between 18% revenue growth and 27% EBITDA growth is price and cost discipline compounding together: Antofagasta realized $6.19 a pound for the copper it did sell, up 36% year-on-year, while net cash costs fell 8% over the same period.
That margin expansion came despite, not because of, the operational picture. Copper production fell 9.5% to 285,000 tonnes, and the company's own explanation names two specific mines — Los Pelambres and Centinela — as the source of the shortfall, compounded by a July storm severe enough to force a precautionary shutdown at Los Pelambres in Chile's Coquimbo region. A record price cushioned what would, in a flatter pricing environment, have been a much harder set of results to explain. Investors reading only the headline EBITDA and margin numbers would miss that the company is producing meaningfully less copper than it was a year ago.
The guidance cut is the clearest evidence of how seriously Antofagasta is treating the operational shortfall. Full-year 2026 production guidance moved to 625,000-655,000 tonnes from 650,000-700,000 tonnes — a reduction of up to 45,000 tonnes at the low end, or roughly 6-7% of the original range's midpoint. Guidance cuts this size are not made lightly; they reflect a company's own assessment that the storm damage and the Los Pelambres/Centinela shortfalls will persist through the rest of the year rather than being fully recovered in the second half.
The balance sheet and shareholder-return signals stayed unambiguously strong regardless. Operating cash flow rose 53% to $2.8 billion, well ahead of even the strong EBITDA growth, reflecting both higher revenue and lower working capital needs. The board's decision to lift the interim dividend 81% to 30.1 cents a share, holding to its policy of paying out 35% of underlying earnings, signals confidence that the current price environment — not the temporarily lower production — is the more durable trend shaping the company's near-term cash generation.
Why it matters
A copper miner posting record margins while simultaneously cutting its own production guidance is a reminder that strong headline earnings from mining companies this cycle are being driven overwhelmingly by price rather than volume growth — relevant to anyone assessing whether current copper-sector profitability reflects a durable operational improvement or simply a favorable price window that could narrow if prices ease before output recovers.
Our read
Outlook: bullish. Antofagasta's results confirm copper prices are at genuinely record levels strong enough to lift a major producer's margins to 63.4% even through a 9.5% production decline, though the company's own guidance cut signals real, not fully resolved, operational disruption at two key mines.
What to watch
- Whether Los Pelambres and Centinela output recovers toward the upper end of the revised 625,000-655,000 tonne full-year guidance
- Further weather-related disruption risk at Los Pelambres in Chile's Coquimbo region
- Progress toward the competitiveness program's $110 million full-year savings target
- Whether realized copper prices hold near H1's record $6.19-a-pound level through the second half
For information only, not investment advice.
Copper price in India
metalscost.com India reference price as of 2026-10-03.
Detailed analysis
Timeline
- 2026-07-01: A severe storm hits Chile's Coquimbo region, forcing a precautionary shutdown at Antofagasta's Los Pelambres mine.
- 2026-06-30: Antofagasta closes its first half of 2026 with H1 copper production down 9.5% year-on-year to 285,000 tonnes.
- 2026-08-12: Antofagasta reports H1 2026 results: revenue up 18% to $4.5 billion, EBITDA up 27% to $2.8 billion, and a cut to full-year production guidance.
Supply Drivers
Antofagasta cut its full-year 2026 copper production guidance to 625,000-655,000 tonnes from 650,000-700,000 tonnes after a 9.5% year-on-year output decline in H1, driven by lower production at Los Pelambres and Centinela and a July storm that forced a precautionary shutdown at Los Pelambres.
Mining Production
Antofagasta's H1 2026 copper production fell 9.5% year-on-year to 285,000 tonnes, with net cash costs down 8% and a competitiveness program delivering $67 million toward a $110 million full-year savings target — cost efficiency improving even as output declined.
What could lift prices
- Antofagasta realized a record copper price of $6.19 a pound in H1 2026, up 36% year-on-year, driving a 63.4% EBITDA margin.
- Operating cash flow rose 53% to $2.8 billion and the interim dividend rose 81% to 30.1 cents a share, signaling confidence in the current pricing environment.
- Net cash costs fell 8% and the competitiveness program is on track to deliver its full $110 million full-year savings target.
What could weigh on prices
- Copper production fell 9.5% year-on-year to 285,000 tonnes, and full-year 2026 guidance was cut to 625,000-655,000 tonnes from 650,000-700,000 tonnes.
- A July storm forced a precautionary shutdown at Los Pelambres, adding operational disruption on top of the already-lower output at Los Pelambres and Centinela.
Country impact
| Country | Impact | Reason |
|---|---|---|
| Chile | High | Antofagasta's core mining operations — Los Pelambres and Centinela — are both in Chile, and a July storm in the Coquimbo region directly forced a shutdown that contributed to the company's guidance cut. |
Industry impact
| Industry | Effect | Reason |
|---|---|---|
| Mining | Positive | Record realized copper prices are driving exceptional margin expansion across pure-play copper miners even where production volumes are under pressure, as Antofagasta's 63.4% EBITDA margin demonstrates. |
Who gains, who loses
- Antofagasta shareholders: An 81% dividend increase to 30.1 cents a share and a 72% rise in profit before tax directly reward shareholders even as production volumes declined.
- Copper buyers dependent on Antofagasta's output: A cut to full-year production guidance, on top of a 9.5% year-on-year output decline, means less copper reaching the market from one of the world's larger producers than previously expected.
Other ways this could play out
- If copper prices hold near current record levels through the second half, Antofagasta's full-year financial results could still set records despite the lower production guidance.
- If Los Pelambres and Centinela recover output faster than the revised guidance assumes, the company could land toward the upper end of its 625,000-655,000 tonne range.
- A pullback in copper prices from current record levels, combined with already-reduced production, would compress margins from both directions at once.
Price risks
- A pullback in copper prices from H1's record realized level would compress margins alongside already-reduced production volumes.
- Further weather or operational disruption at Los Pelambres or Centinela could push full-year output below even the reduced 625,000-655,000 tonne guidance range.
Historical comparison
- H1 2025: Antofagasta's realized copper price was roughly 36% lower than H1 2026's record $6.19 a pound, and net income and dividend levels were both well below H1 2026's.
Technical view
Price is mixed relative to its 20-period and 50-period moving averages, showing no clear trend alignment.
Computed from metalscost.com's own stored price history.
