Copper’s October Lift: Supply Squeeze, Thin Asia Trade, And South America’s Weight

Copper opened October on the front foot. London three-month contracts hovered around $10,414 a ton in early dealings and steadied near $10,375 by late morning, while New York’s December futures settled the prior session at $4.8305 per pound (about $10,650/t).

With Shanghai shut for China’s National Day holidays, much of the price discovery shifted to London and New York, thinning Asian liquidity and magnifying every headline.

Those headlines have leaned tight. A force majeure at Indonesia’s Grasberg—one of the world’s largest copper mines—kept supply nerves taut.

In Chile, a union at Antofagasta’s Los Pelambres rejected a contract offer, and national output in August fell 9.9% year on year.

Exchange signals echoed the stress: available LME inventories slipped to roughly 142,000 tons, their lowest since early August. A softer U.S. dollar added a tailwind.

Behind the story is a longer squeeze. Demand linked to power grids, data centers, electric vehicles and renewable build-outs keeps grinding higher, while mine growth is slower, ore grades keep drifting lower, and new projects face cost and permitting delays.

Market balances for 2025 now look tighter than they did mid-year, and recurring outages turn small deficits into price spikes.

With Chile and Peru anchoring global supply, South America’s labor talks, weather and logistics reverberate worldwide—an underappreciated risk for investors far from the Andes.

Flows and positioning have tracked the tape. U.S. copper ETFs were actively traded into quarter-end, with the United States Copper Index Fund (CPER) closing at $30.15 and copper-miner funds such as COPX gaining with futures.

Daily creations and redemptions post after the close, but recent weeks have shown net inflows as prices advanced. The technical picture is straightforward.

On the daily chart, copper rides rising moving averages, with resistance near $10,500 and support around $10,250 then $10,100.

On the four-hour chart, higher lows point to an upside bias; a sustained break above $10,500 would target $10,650–$11,000, while a failure there likely sends prices back to test $10,250.

What to watch next: updates on Grasberg’s restart, Chilean labor negotiations, the next global balance estimates, and the dollar’s path while China remains offline.

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