Copper Prices Dip Amid Chilean Supply Shortfall and Macro Pressures
On 2 October, the London Metal Exchange (LME) three-month copper contract closed at $14,320 per tonne, marking a 2.2% weekly decline. This drop came despite Chile's copper production hitting a 15-year low in August, with output falling 12.8% year-over-year to 369,500 tonnes. The decline was attributed to severe weather, accidents, declining ore grades, and labor disputes at Chilean mines. The US dollar index reaching a 17-month high and rising oil prices due to the US-Iran conflict also contributed to copper's price decline, as these factors increased costs for buyers using other currencies.
China's refined copper imports dropped around 11% in 2026 due to expanded domestic smelting, shifting demand towards concentrate, the ore feed that Chile is now supplying less of. This shift has given miners outside Chile and Chilean projects with funded production paths more bargaining power over concentrate terms. Meanwhile, aging Chilean mines and potential US tariffs have further tightened copper inventories outside the US, with LME stocks averaging 227,683 tonnes in August, 42% below May's average.
Diesel costs for open-pit mining operations have added pressure, with Brent crude oil priced at $102.51 per barrel on 5 October. Producers with mines outside Chile benefit from the same LME price without the volume loss experienced by Chilean operations. However, Chilean projects under development or exploration could attract offtake interest, as Chinese smelters compete for concentrate. The long-term outlook favors producers who can deliver new feed, whether from operating mines outside Chile or Chilean deposits with a funded path to production.