Aluminum buyers face biggest London Metal Exchange squeeze in decades as inventories plunge

Aluminum buyers on the London Metal Exchange, a major global pricing hub, are facing the most severe squeeze in decades according to a report on the physical metal market. The pressure centers on inventories that back exchange contracts, which have plunged, while much of the remaining available stock is controlled by just two traders. The concentration leaves short sellers, manufacturers and funds exposed if delivery becomes difficult. The squeeze is not merely a price move; it reflects a bottleneck in the pool of metal that can be called on to settle contracts.

The evidence is structural: the exchange's warrant system depends on certified stocks in approved warehouses to meet delivery obligations. When those stocks shrink and ownership concentrates, the market loses slack. Two holders controlling a large share of remaining inventory can influence backwardation, when near-term metal costs more than later delivery, and the cost of securing metal. That turns a liquidity problem into a physical one, because buyers cannot substitute paper exposure for metal. The report did not specify exact totals or traders.

Aluminum matters because it is both an industrial input and an energy-intensive commodity, so tightness can signal stress in power supply, smelter utilization and global logistics. A squeeze of this kind often precedes wider volatility in cyclical equities, as manufacturers face higher input costs and traders reprice delivery risk. It also intersects with rising electricity demand from AI data centers and electrification, which competes with industrial power needs. For policymakers and firms, the LME squeeze is a leading indicator: scarcity in one metal can spill into construction, transport and packaging.

Next, attention will turn to whether LME inventories stabilize, whether warehouse stocks move between locations, and whether the two traders continue to dominate available warrants. If backwardation persists, exchange rules, margin requirements and delivery procedures may face scrutiny. Producers may restart idled capacity only if power and freight costs allow it. The market's test is whether price signals can restore physical supply without triggering broader industrial inflation. A quick unwind would suggest temporary logistics friction; a prolonged squeeze would support a higher-for-longer commodity thesis.