Aluminum Holds Above $3,140 as LME Inventories Dwindle to 20-Year Lows

Aluminum markets are approaching a physical supply cliff. LME-registered warehouse stocks fell to 298,775 tonnes on July 6, their lowest level since September 2022, and the drawdown shows no sign of reversing. The Oregon Group calculates that visible global aluminum inventories represent less than five days of consumption — a wafer-thin buffer by any historical standard. Spot aluminum is now trading at a premium to three-month futures on the LME, a backwardation that signals genuine physical tightness rather than speculative positioning. 'Five days of cover means there is no shock absorber,' the Oregon Group noted. 'Any supply interruption goes straight to price.'

The tightness is not confined to exchange warehouses. In China, which produces and consumes roughly 60% of the world's aluminum, spot inventories of primary aluminum have fallen for 12 consecutive sessions to 1.09 million tonnes — more than 25% below their April peak. The destocking reflects both resilient downstream demand for aluminum semis and the fact that China is operating near its government-mandated 45 million tonne annual capacity cap. Production crept higher in June — Mysteel estimates 3.75 million tonnes, up 2.63% year-on-year — but daily output actually declined 3.12% month-on-month. The capacity ceiling is binding.

Alumina, the raw material for primary aluminum smelting, has firmed in tandem. The LME alumina reference price climbed to $330/t in early July, up from roughly $307/t in late June. In China, spot alumina traded at RMB 2,730/t (approximately $404/t) on June 11, supported by concerns that Guinea — the world's largest bauxite exporter — may impose export controls. Guinea's government is preparing new bauxite export regulations, and any restriction would immediately tighten the alumina supply chain. Overseas alumina output fell 6% year-on-year in June, partly due to Middle Eastern disruptions affecting energy-intensive refining operations.

The global supply-demand balance is increasingly precarious. Macquarie, one of the most closely followed aluminum analysts, projects a 930,000-tonne deficit for 2026. Other estimates range from a marginal 140,000-tonne shortfall to a stressed-case scenario of nearly 2 million tonnes — the latter driven by assumptions that Middle Eastern smelter output will remain disrupted by energy constraints and shipping risks related to the Iran-Gulf conflict. ChemAnalyst's stressed scenario, published this week, explicitly factors in 'prolonged Strait of Hormuz disruptions' affecting both alumina shipments to Gulf smelters and primary aluminum exports from the region.

Chinese exports have become the global swing factor. Unwrought aluminum and semis exports grew 12.8% year-on-year in the first two months of 2026, and surged further in May as Chinese producers filled gaps left by disrupted Middle Eastern supply. But China cannot export its way out of every supply crisis. The 45 million tonne domestic capacity cap is binding, and Beijing has shown no willingness to relax it — indeed, the government is actively encouraging capacity relocation to Indonesia rather than domestic expansion. Bloomberg Intelligence noted that Chinese aluminum exports to Europe and Asia have become 'price-insensitive' — buyers are taking whatever tonnage is available at whatever price, because the alternative is production shutdowns.

Analyst price forecasts have been revised sharply higher. Goldman Sachs targets $3,300/t for Q3 2026. Just2Trade's survey of bank and consultant forecasts clusters around $3,400–3,800/t for the 2026 average, with end-2026 targets as high as $4,000/t. Sook Trading's July 2 update is more conservative, forecasting $3,100–3,300/t for Q3 and $3,200–3,500/t for the full year — but notes that these numbers are 'still historically high.' The World Bank's $3,200/t average forecast for 2026, published earlier this year, already looks stale. Spot has been above $3,200 for most of 2026 and briefly touched $3,700/t in May during the peak of inventory anxiety.

The bear case — such as it exists — rests on two pillars. First, China's domestic market could soften if the property sector continues to contract, pulling aluminum demand lower and freeing up more metal for export. Second, a ceasefire in the Gulf could rapidly restore Middle Eastern smelter and shipping operations, releasing pent-up supply. Neither scenario looks imminent. The International Aluminium Journal notes that even analysts expecting a marginal surplus in 2026 still forecast average cash prices above $3,000/t. The floor is higher than it was, and the ceiling depends on geopolitics.

The aluminum market in mid-2026 is not balanced on a knife-edge — it has already tipped. The question is not whether supply is tight, but how much tighter it gets before something breaks.