LME Copper Climbs Toward 14,615 Dollars per Tonne on Chile Mine Strike

• LME three month copper settled at about 14,614.5 dollars per tonne on October 8
• Centinela strike began October 7 with about 709 workers off the job
• Centinela produced about 240,400 tonnes of copper in 2025
• Shanghai copper stocks fell 17.8 percent to about 38,744 tonnes by late September
• Prediction markets priced about 40 percent chance of United States Section 232 copper tariffs

Global copper markets moved through the first two weeks of October 2026 with a wide trading range, as fresh supply disruption at the Centinela mine in Chile pulled prices back toward recent record highs after a late September pullback. On October 8, the London Metal Exchange three month copper contract settled at about 14,614.5 United States dollars per tonne, up about 0.96 percent on the day and roughly 2 percent below the all time nominal peak of 14,875 dollars per tonne set on September 10. The CPER copper fund proxy traded about 0.88 percent lower at 39.46 dollars during the same session, with Southern Copper and Freeport McMoRan shares pulling back on normal roll and basis dynamics.

The direct supply shock came from the Centinela mine, which Antofagasta operates in northern Chile. About 709 workers from two unions, around 22 percent of the mine's workforce, began striking on October 7 after a government mediation process ended on October 6 without a deal. The unions had voted for the strike on September 28, and both sides had earlier declined to settle during mandatory mediation. Centinela produced about 240,400 tonnes of copper in 2025, making the stoppage a measurable factor for Chilean supply if it lasts.

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Antofagasta initially said that its 2026 output guidance was unchanged, though the market acknowledged that the final impact depends on how long the strike continues. Chinese buyers returning from the Golden Week national holiday supported prices through pre holiday restocking at Shanghai bonded warehouses and port terminals, where inventories had been drawn down earlier in September. Shanghai copper stocks had fallen 17.8 percent in the week ending late September to about 38,744 tonnes, the lowest reading since January 2024.

Macroeconomic signals added to the volatility. The United States dollar index held firm during the second week of October, raising the landed cost of copper for international buyers, and the ten year Treasury yield traded above 5.2 percent, keeping holding costs elevated for financial copper positions. Prediction market activity priced in roughly a 40 percent chance that United States Section 232 tariffs on copper cable would be applied by the end of 2026, adding to the risk premium that United States spot buyers were paying over LME values.

For procurement teams in power transmission, EV wiring harness, construction wire, and electronics supply chains, the near term action is to lock in November and December copper coverage before Centinela strike news or further Chilean mine disruptions widen the physical premium. Semi finished copper buyers should confirm bilateral volumes with Chinese and European rolling mills while the current risk premium is holding. Automotive and electrical equipment buyers should stress test their fourth quarter cost models against a scenario where LME copper firms back toward 14,875 dollars per tonne if the Centinela stoppage drags into November.