Aluminum Corrects 12% From June High But LME Stocks at 20-Year Lows Signal Persistent Tightness

LME aluminum cash prices settled at $3,130 per tonne on June 25, a sharp retreat from the four-year high of $3,795.50 reached on June 1. The 17.5% correction in under four weeks reflects a market caught between speculative selling and undeniable physical tightness. The CFD benchmark tracked by TradingEconomics shows aluminum at $3,199.25/t on June 26, up 0.82% on the day but down 11.79% over the past month. Year-over-year, aluminum remains 23.1% higher, and the structural drivers of that repricing have not gone away.

The most important number in the aluminum market right now is 310,225 tonnes — the total LME registered warehouse stocks as of June 25, according to AlCircle. That figure represents a decline of roughly 300,000 tonnes since the start of 2026, bringing inventories to near 20-year lows. Live warrants stand at only 247,575 tonnes, with cancelled warrants at 60,650 tonnes indicating further physical drawdowns in the pipeline. DiscoveryAlert notes that a 1.08% single-session decline in live warrants in mid-June underscores how quickly available metal is being absorbed. This level of physical scarcity provides a structural price floor that speculators betting on further declines will eventually hit.

The supply-side picture is defined by the Iran conflict's impact on Persian Gulf aluminum production. Goldman Sachs lowered its West Asia production estimates by 660,000 tonnes for 2026, assuming damaged capacity restarts only in early 2027. Combined with continued smelter curtailments in Europe, where electricity costs remain elevated, the global primary aluminum market is now projected to run a 720,000-tonne deficit in 2026, up from Goldman's previous estimate of 570,000 tonnes. The World Bureau of Metal Statistics reported a 1.53 million tonne deficit for January-November 2025, confirming the structural nature of the imbalance.

China's aluminum production, which accounts for roughly 60% of global output, reached 45.02 million tonnes in 2025 and is effectively at the government's nominal capacity cap of 45 million tonnes. Goldman now forecasts Chinese production at 45.6 million tonnes in 2026 and 46.3 million tonnes in 2027 as strong margins encourage restarts above the cap. China's exports of semi-finished aluminum products have also been affected by the cancellation of the 13% export tax rebate, redirecting more metal to domestic consumption and tightening availability for export markets.

The US market has become structurally more expensive due to the 50% Section 232 tariffs on aluminum, which were doubled from 25% on June 4, 2025. The Midwest premium hit a record $1,942 per tonne by November 2025, and domestic inventories collapsed from 750,000 to below 300,000 tonnes. On April 2, 2026, a further proclamation expanded tariff coverage to apply Section 232 duties to the full customs value rather than just metal content, raising effective import costs further. Any buyer sourcing aluminum for US delivery is paying a structural premium that shows no sign of reversing.

The alumina market adds another layer of cost pressure. Alumina prices held at $307.33 per tonne on June 25, stable but elevated. The alumina-to-aluminum ratio remains within ranges that preserve smelter profitability for efficient operators, but rising input costs will eventually flow through to metal prices. AlCircle reports that the Asian reference price climbed to $3,164.50/t on June 25, reflecting stronger regional demand and the backwardation structure that incentivizes physical holders to capture premiums rather than carry metal.

For procurement teams, the current dip below $3,200/t represents a tactical buying window. LME stocks at 20-year lows mean any supply disruption — a smelter outage, a logistics bottleneck, or an escalation in the Iran conflict — could trigger a rapid re-pricing toward the June 1 high of $3,795. Buyers with Q3 delivery requirements should lock in volumes now rather than waiting for further declines that physical scarcity makes unlikely. US-based buyers face an additional imperative: the 50% tariff structure is not going away, and Midwest premiums near $2,000/t are now a permanent cost of doing business. Negotiate annual contracts with fixed premium adders rather than floating Midwest premium references. For European buyers, the regional deficit means securing supply from hydro-powered smelters in Norway, Iceland, and Canada is worth a premium for both price stability and carbon compliance under CBAM.