What Is Behind the Latest Move in Antofagasta Plc Shares?

Antofagasta Plc (LSE:ANTO) shares moved 2.33% lower to 3,232.0p today, a change of 77.0p. The Chilean copper producer remains in focus after a half-year update that combined higher Earnings with an adjustment to its production outlook.

For the six months to 30 June 2026, EBITDA rose 27% to US$2.84 billion, pre-tax profit increased 72% to US$2.00 billion and the Interim Dividend was raised 81% to 30.1 US cents per share.

About Antofagasta Plc

Antofagasta Plc is a copper-focused Mining group with operations in Chile. Its main producing Assets are Los Pelambres, Centinela and Antucoya, and it also produces gold, molybdenum and silver as by-products. The group has a transport division serving mining customers in northern Chile.

Copper is used widely in power grids, renewable energy and electric vehicles, which gives the sector long-term Demand themes. LSE:ANTO has a 0.44% weighting in the FTSE 100.

Half-Year Financial Performance

Revenue rose 18% to US$4.48 billion, helped by an average realised copper price that was 36% higher than a year earlier. EBITDA of US$2.84 billion was above analyst expectations, while Earnings Per Share rose 62% to 85.9 US cents.

Operating cash flow increased to US$2.77 billion from US$1.81 billion, supporting Capital Expenditure of US$1.67 billion in the half. Full-year capital spending guidance is unchanged at US$3.4 billion.

Production and Updated Guidance

Copper production was 285,000 tonnes in the half. The group has updated its 2026 copper production guidance to 625,000–655,000 tonnes following a temporary suspension at Los Pelambres caused by severe weather. The operation has resumed, and repairs to some pipeline platforms and water management systems are continuing.

Management expects output to improve in the second half as operations normalise, and the weather-related disruption is not expected to change the long-term outlook for the assets.

Growth Projects

The Centinela and Los Pelambres expansions are expected to complete commissioning in 2027 and together add about 30% to copper production. Centinela's new water infrastructure is an important element of the project, and the group has recognised it as a lease, which contributed to a net Debt position of US$3.97 billion.

These projects form the core of the group's growth plan and are designed to lift volumes at a time when copper demand is expected to be supported by electrification.

Dividend and Capital Allocation

The interim dividend of 30.1 US cents per share was 81% higher than last year and above market expectations. Antofagasta typically balances dividends with Investment in expansion projects and maintenance of a sound balance sheet.

Operational Focus

The company continues to focus on water efficiency, with desalination and seawater use central to its operations in the dry Atacama region. Efficient use of water and energy is increasingly important to communities and regulators, and it helps support the licence to operate. The group also reports on safety, community engagement and environmental stewardship, which are central to operating large mines in Chile. These areas support long-term relationships with regulators and neighbouring communities.

Operational Assets at a Glance

Los Pelambres, located in the Coquimbo region, is a large copper and molybdenum operation that also produces gold and silver as by-products. Centinela produces copper cathodes and concentrate along with gold and molybdenum, while Antucoya produces copper cathodes. This mix of assets gives the group exposure to different processing routes and products.

Balance Sheet and Investment

Net debt of US$3.97 billion reflects heavy investment in growth and the Lease treatment of new water infrastructure at Centinela. Capital expenditure of US$3.4 billion is planned for the full year, and management has stated that the projects are intended to lift volumes and improve the efficiency of the asset base. The step-up in Operating Cash Flow in the half provides support for this programme.

Factors to Monitor

Investors following LSE:ANTO may watch copper prices, the recovery in output at Los Pelambres, progress on the Centinela and Los Pelambres projects, currency trends in Chile and cost movements across the second half.

Conclusion

Antofagasta Plc moved 2.33% lower to 3,232.0p today after a half-year update showing higher earnings, an 81% rise in the interim dividend and an updated production range of 625,000–655,000 tonnes. The 2027 project milestones remain the key long-term catalyst. Future company announcements should provide further detail on operating progress, capital allocation and management priorities.