Freeport’s Indonesia setback jolts copper: prices pop, supply tightens

What happened

Freeport-McMoRan ($FCX) cut Q3 guidance after a deadly mud-flow accident at its Grasberg Block Cave mine in Indonesia. The company now expects consolidated copper sales ~4% below July estimates and gold ~6% lower. Much of Grasberg will remain shut into H1 2026. Copper futures jumped ~3.8% to about $4.82/lb on tighter supply signals.

Why it matters

Grasberg is among the world’s largest copper mines, and the disruption flips near-term market balance toward deficit, lifting price expectations into 2025–2026.

WINNERS

Diversified U.S.-listed copper producers (benefit from higher realized prices and tighter supply)

Southern Copper ($SCCO) — large-scale copper producer with assets outside Indonesia; rising prices expan ...