President Donald Trump’s unexpected announcement of a 50% tariff on copper imports sent commodity markets into turmoil Tuesday, triggering copper’s largest single-day price surge on record. The policy declaration during a Cabinet meeting also previewed impending tariffs on pharmaceuticals and semiconductors.
Comex July copper futures skyrocketed 13% ($0.6605 per pound) to settle at $5.645 – establishing both an all-time closing high and the biggest single-session percentage gain in history, per Dow Jones Market Data. The red metal has now surged 41.6% year-to-date and 23.3% over the past 52 weeks.
Major producers showed mixed responses: Freeport-McMoRan (FCX) climbed 3.5% to an eight-month high, though remaining 15% below its peak. The Phoenix-based miner operates seven U.S. open-pit mines (Arizona/New Mexico) with significant South American and Indonesian operations. Its SEC filing projects 2025 production of 4 billion pounds, with 1.3B from U.S. sites, 1.1B from South America, and 1.6B from Indonesia.
Southern Copper (SCCO) pared early gains after rising 4.7% intraday, still trading 21% below its high. The Grupo México-controlled company (mines in Mexico/Peru) confirmed tariff implementation would trigger production reassignment “to other markets,” per CFO Raul Jacob’s April remarks.
TD Securities’ Bart Melek characterized the surge as a “liquidity event” creating a $2,000/ton premium for U.S. copper versus LME prices. This arbitrage will accelerate inventory shifts to U.S. warehouses, intensifying global supply strain, he noted.
MarketGauge’s Michele Schneider warned tariffs compound pressure on an already fragile supply chain with robust demand from AI infrastructure and grid upgrades.
Melek cautioned the policy risks elevating U.S. manufacturing costs while highlighting critical import dependency – domestic production covers just 64% of consumption, requiring 700,000 metric tons of annual imports. Nevertheless, he considers significant price correction unlikely given America’s 8% global consumption share, with the widening exchange gap (LME up 13% YTD vs Comex’s 25% surge) potentially fueling further gains.
