Copper Closes In on a Record as a Global Supply Squeeze Reaches Alarm Levels
Finn's Take· TL;DR- Global copper supply has reached critical shortage levels, with prices near record highs and extreme backwardation signaling desperate near-term demand.
- Mine production from major suppliers like Chile is declining while inventories drain rapidly, with 42 consecutive days of stock falls since July.
- Looming US tariffs on refined copper are driving stockpiling in American warehouses, artificially constraining global supply and sustaining price pressure.
A Market Signal That's Hard to Ignore
Copper rose toward a record on the London Metal Exchange, with soaring price spreads highlighting an increasingly acute squeeze in near-term supply. For most people, copper is just the stuff inside wiring and pipes. But right now, the global market for this metal is flashing warning signs that traders haven't seen in years — and the ripple effects could eventually reach everything from electric vehicles to construction costs.
The metal's spot price traded as much as $545 a metric ton above the three-month futures contract, the widest backwardation since a historic squeeze in 2021 prompted the adoption of emergency measures to contain a runaway rally. In plain terms, backwardation means buyers are so desperate for copper right now that they're willing to pay a massive premium over what they'd pay for delivery months down the road — a classic sign that immediate supply is dangerously tight.
Where All the Copper Is Going
US refined copper imports exceeded 200,000 metric tons in July 2026, the highest monthly total in 12 years. By August 12, copper inventories at the London Metal Exchange had fallen 14%, or by more than 35,000 tons, from the end of July to 214,550 tons. That's a staggering drain in just a matter of weeks.
Copper inventories have fallen for 42 consecutive days, marking the longest uninterrupted decline since 2014. Stocks have dropped to around 204,975 tonnes, while nearly half of the remaining metal has already been earmarked for withdrawal. So the visible stockpile is even smaller than the headline number suggests. Continued flows to the US and China, where prices trade at premiums to the LME, have drained stocks.
The US already imposes a 50% tariff on imports of semi-finished copper products, while the Commerce Department has recommended a broad 15% tariff on refined copper starting January 1, 2027, rising to 30% on January 1, 2028. That looming policy timeline is driving traders to stockpile copper in American warehouses now, before the full weight of those duties kicks in — effectively pulling supply away from the rest of the world.
Mine Output Is Failing to Keep Up
The International Copper Study Group reported that global mine production fell 1.6% during the first five months of 2026, with output declining in Chile, the Democratic Republic of Congo, and Indonesia, limiting the market's ability to respond quickly to higher prices. These aren't minor blips. They represent sustained underperformance at some of the world's most critical mining operations.
Chile's copper commission Cochilco expects national copper output to fall 2.6% year-on-year to 5.3 million tons in 2026, reflecting weaker production from Codelco and BHP operations. Chile is the world's largest copper producer, so any shortfall there reverberates globally. Meanwhile, the Gresik smelter in Indonesia, which processes Grasberg concentrate, remains offline following a boiler leak on August 8. Every disruption, large or small, adds pressure to an already strained system.
According to Jefferies' copper mine production tracker, miners that have disclosed Q2 data posted combined output of 3.113 million tons, down 3.9% year-over-year. Jefferies analysts stated that mine supply risks are skewed to the downside, and even under a conservative scenario of just 2% global GDP growth, the copper market will face a significant deficit over the next 12 months and beyond.
What Comes Next
LME three-month copper rose 1.4% to $14,360.50 per ton, on track for an eighth consecutive weekly gain and moving closer to the intraday record high of $14,527.50 per ton set in January. Copper is now up around 16% year-to-date. That's a remarkable run for a commodity that underpins so much of the modern economy.
Until the White House makes its decision on tariffs, uncertainty surrounding them gives traders an incentive to keep imported copper in US warehouses, limiting the amount available to settle LME contracts. That uncertainty is unlikely to resolve quickly. With a proposed tariff decision horizon stretching into 2027, the structural pressure on global copper markets could persist for months — keeping prices elevated and supply chains under strain well into next year.