Falling commodity prices weigh on Antofagasta (ANTO) as mining sector weakens
Broad weakness across the mining and resources sector, driven by falling commodity prices, weighs on Antofagasta plc shares today. The UK-listed copper miner trades down 3.1% to 3,499p on April 28, 2026, extending a decline from its previous close of 3,610p.
The downturn follows a slump in key commodities. Gold fell 1.3% to $4,623.00 per ounce, while silver declined 2.4%. This movement reflects climbing US Treasury yields, linked to an impasse in Middle East peace talks, which typically diminish the appeal of non-yielding assets like precious metals.
Antofagasta's performance aligns with sector-wide pressure rather than company-specific news. Peers such as Rio Tinto trade down 0.5%, Vale is lower by 0.6%, and Newmont Mining has fallen 3.8% on the same day, underscoring the pervasive impact of commodity market dynamics.
Why rising yields make non-yielding assets less appealing
Antofagasta plc is a major UK-listed mining company, primarily focused on copper production in Chile. It extracts copper ore from the ground, processes it into concentrate or cathodes, and then sells these materials to industrial customers globally. Copper is a fundamental component in construction, electronics, and renewable energy technologies, making Antofagasta's revenue directly tied to global industrial demand and, crucially, the prevailing market price of copper.
Today's movement for Antofagasta shares stems from a broader shift in the commodities market, specifically the rising appeal of safer, yielding investments over non-yielding assets. US Treasury yields are climbing, driven by an impasse in Middle East peace talks, which typically makes government bonds more attractive. This dynamic diminishes the allure of non-yielding assets like precious metals, causing gold to fall 1.3% to $4,623.00 per ounce and silver to decline 2.4%. While Antofagasta is a copper miner, not a precious metals company, this underlying economic pressure creates a sector-wide weakness that impacts all resource stocks.
This general malaise across the mining and resources sector has seen Antofagasta plc shares trading down 3.1% today, currently at 3,499p, extending a decline from its previous close of 3,610p.
Think of it like choosing between two types of savings accounts. One offers a guaranteed interest rate, while the other holds a physical asset like a rare coin that doesn't pay interest but might increase in value. If the interest rate on the savings account suddenly goes up, the rare coin becomes less appealing because you're missing out on a better, guaranteed return elsewhere, even if its intrinsic value hasn't changed. This shift in preference can then ripple across other assets that share similar market drivers.
Antofagasta plc
Antofagasta plc (ANTO) is a diversified mining group with significant copper operations in Chile. The company extracts copper cathodes and concentrates from its interests in the Los Pelambres (60%), Centinela (70%), Antucoya (70%), and Zaldívar (50%) mines. Beyond copper, Antofagasta also produces molybdenum, gold, and silver as by-products. Its activities are organised across several segments including Los Pelambres, Centinela, Antucoya, Zaldívar, and an Exploration and Evaluation division, which manages projects in various countries. Additionally, the Transport Division provides essential rail and road cargo services to mining clients in northern Chile. Antofagasta plc, a subsidiary of Metalinvest Establishment, was founded in 1888 and is headquartered in London.