The copper market is caught between conflicting forces in June 2026: a genuine mine-supply crisis (Grasberg landslide removing ~591kt, QB2 suspension at ~200kt/yr, Kamoa-Kakula flooding) tempered by a demand growth downgrade (ICSG 2026 growth cut to +1.6%) and a massive COMEX inventory build to 585kt driven by US tariff stockpiling. LME cash at $13,716/mt reflects consolidation in a $12,500-$14,500 range since Q1 2026, with the forward curve in modest contango (~$55/t) — a stark reversal from the deep backwardation of mid-2025. The next catalyst is the US Commerce Department's Section 232 copper report due June 30, which could recommend phased tariffs on refined cathode of 15-30% starting 2027. This report covers the full supply-demand balance, mine disruption analysis, cost impact across regions, scenario framework, and actionable forward contract recommendations.
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