Copper hit an all-time intraday high of US$6.77/lb on August 7, 2026, breaking its previous record from May, according to Investing News Network. The COMEX continuous futures contract reached $6.8795/lb before pulling back to $6.61/lb; as of August 28, the metal was bid at $6.5880/lb per Kitco.
The physical market is tighter than the headline price alone conveys. LME copper inventories have fallen by almost half since mid-May following a 42-day streak of declines, per Crux Investor. More telling: as of mid-August 2026, LME cash copper settled at $14,424.50 per tonne against the three-month forward at $14,217/tonne — a cash premium of $207.50/tonne, the widest recorded in 2026. That spread had sat at $34 at the end of July, moved to $138 mid-week, then blew out to $207.50 within days. With approximately 58% of remaining LME inventory tied up in cancelled warrants, the freely available supply is a fraction of the headline figure, per Crux Investor.
The supply disruptions are structural, not transient. A fatal mudslide at Grasberg — the world's second-largest copper mine — triggered force majeure in September 2025, halting the Grasberg Block Cave, which accounts for about 70% of previously expected production; restart is not expected until the second quarter of 2026, per Supply Chain Digital. Collahuasi output fell 12.1% year-over-year in December; Escondida dropped 16.5% year-over-year; Peru contracted 11.2% year-over-year as of November, driven by ore grade depletion, water constraints, higher ESG compliance costs, and weakening brownfield productivity, per Discovery Alert.
Jefferies' latest tracker, covering miners responsible for roughly 55% of global supply, recorded second-quarter output falling 3.9% year-over-year to 3.113 million tons. Ivanhoe Mines posted a 43% production decline following disruption at Kamoa-Kakula; Newmont dropped 53% amid lower ore grades; Freeport-McMoRan, Antofagasta, and BHP also reported declines, per Mining.com.
Jefferies expects a 442,000-tonne market deficit in 2026, widening to 782,000 tonnes by 2030. On the demand side, S&P Global projects copper consumption from data centres rising from 1.1 million tonnes in 2025 to 2.5 million tonnes by 2040.
The tariff overhang is the remaining variable complicating project economics. Traders have continued diverting shipments toward the US amid elevated premiums and expectations of new tariffs under the Trump administration, with the White House yet to make a final decision, per Canadian Mining Report. While the US opted in January 2026 to forgo proposing tariffs on most critical minerals in favour of negotiating agreements, copper has received separate treatment. Section 232 risk remains unresolved; if the Supreme Court constrains broader tariff strategies, the Trump administration is likely to lean more heavily on Section 232, per Canadian Mining Report. A clear decision — positive or negative — would reduce uncertainty and allow investors to better assess project economics, particularly for companies financing new mines or expansions.
For junior explorers and VMS-focused companies, the macro setup cuts both ways. Policy uncertainty increases volatility in junior and intermediate copper stocks, per Canadian Mining Report. With limited capital and no revenue, junior miners are more exposed to rising costs for drilling equipment, lab analysis, and geophysical surveys, per Rangefront Mining Services. At the same time, Herbert Smith Freehills Kramer's 2026 Global M&A Report notes that public M&A momentum from 2025 is expected to continue, with junior and intermediate miners potentially attracting targeted interest as majors prioritise strategic growth.
The macro backdrop heading into September adds one more layer. Markets closed August 28 pricing roughly a 57% probability of a rate hike at the Federal Reserve's September 15–16 FOMC meeting, per STL News, with the federal funds rate currently at 3.50%–3.75%. The August US employment report, scheduled for September 4, could materially shift those odds — and with them, the cost-of-capital environment that junior resource raises depend on.