Aluminum prices in Shanghai slid to their lowest level in 11 months on Tuesday, as a surge in Chinese exports added to global supply just as demand showed signs of wobbling. The move came even as London prices edged higher, highlighting a growing divergence between the two key trading hubs.
What's behind the drop?
China, the world's largest aluminum producer, reported that exports of aluminum and aluminum products rose 18% to 5.9 million tons in the January–October period. That flood of metal is hitting global markets at a time when demand from key sectors like construction and manufacturing is softening.
At the same time, the US dollar has remained firm. Because most industrial metals are priced in dollars, a stronger greenback makes them more expensive for buyers using other currencies, effectively dampening demand. This combination—more supply and a stronger dollar—weighed heavily on the Shanghai Futures Exchange (SHFE) contract.
But the London Metal Exchange (LME) tells a different story. Its three-month aluminum contract rose to about $3,035 a ton, supported by falling inventories in LME-registered warehouses. That decline in available stock has pushed the market into what traders call backwardation—a situation where the price for near-immediate delivery is higher than the price for delivery later. In plain English, it's the market saying "prompt metal is scarce," even if the broader supply picture looks more comfortable thanks to Chinese exports.
Why the split matters
The day-to-day headline is the split between Shanghai and London, but the more useful signal for investors is the shape of the LME curve. When backwardation widens, anyone who needs metal soon pays a higher premium. For companies hedging with short-dated LME contracts, this can mean higher "roll" costs when they extend those hedges—an expense that can eat into margins.
Falling exchange inventories can tighten financing and hedging conditions even without a big move in the three-month benchmark. This kind of squeeze usually eases only when more deliverable stock shows up in LME warehouses or when the cash-to-three-month spread narrows. So watching that spread can matter as much as watching the headline price.
For everyday investors, the aluminum market offers a window into global trade flows and currency dynamics. A strong dollar and rising Chinese exports are headwinds for metal prices, but tight near-term supply in London shows that local conditions can override the broader trend. This is a reminder that commodity prices are rarely driven by a single factor—they reflect a complex mix of supply, demand, currency moves, and market structure.
What to watch next
Investors will be keeping an eye on several things: whether Chinese exports continue to climb, how the dollar moves in the coming weeks, and whether LME inventories keep falling. Any of these could shift the balance between the two markets.
Related coverage: China's record trade surplus shows the broader export picture, while currency moves tied to US inflation can influence dollar-priced metals. For a look at how other aluminum producers are faring, see Alba's output rebound.
For now, the aluminum market is sending mixed signals: one market says supply is ample, the other says it's tight. The truth, as always, lies somewhere in between—and in the details of the curve.
