LME aluminium stocks have halved in 2026 to 246,925 tonnes, the lowest in the exchange's 18-year public record, as Gulf war damage to smelters and a Mozambique plant closure squeeze supply.
At a glance
- LME aluminium warehouse stocks fell to 246,925 tonnes as of August 26, the lowest in the exchange's 18-year public record, after roughly halving from 509,250 tonnes on January 2, 2026.
- The market has gone 138 consecutive trading sessions without a daily net stock build, the longest streak on record.
- Fighting involving Iran damaged Emirates Global Aluminium's Al Taweelah smelter (about a year to repair) and cut Qatar's Qatalum smelter output by roughly 40% after drone attacks disrupted its natural gas supply.
- Gulf regional aluminium output fell to its lowest level in over a decade, down an annualised 2 million tonnes over March and April.
What happened
Aluminium stockpiles held in London Metal Exchange (LME) warehouses have fallen to 246,925 tonnes as of August 26, the lowest level in the exchange's publicly available warehouse-stock record, which stretches back to January 2008. Reuters columnist Andy Home described the drawdown as a 36-year low; the exchange's own online archive only extends to 2008, but within that 18-year record the current level is confirmed as the lowest on file, undercutting the previous record of 271,450 tonnes set in August 2022 in the aftermath of Russia's invasion of Ukraine. Stocks have essentially halved in 2026 alone, from 509,250 tonnes on January 2, and the market has now gone 138 consecutive trading sessions without a single daily net build, the longest such streak in the exchange's records.
The drawdown traces back to fighting involving Iran that has disrupted aluminium production across the Gulf. Emirates Global Aluminium's Al Taweelah smelter, near Abu Dhabi, sustained damage that the company says will take about a year to repair, while Qatar's Qatalum smelter cut output by roughly 40% after regional drone attacks disrupted the natural gas supplies it depends on. Regional production run-rates fell by an annualised 2 million tonnes over March and April alone, pushing Gulf output to its lowest level in more than a decade. A separate, unrelated closure compounded the squeeze: South32 shut its 580,000-tonne-per-year Mozal smelter in Mozambique in March, citing high energy prices. Combined, Western aluminium production dropped by 2.4 million tonnes over two months. LME-registered ("on-warrant") stocks, the subset actually available for delivery against exchange contracts, have fallen by a third since the start of the year to 339,475 tonnes, with roughly 68,000 tonnes cancelled in recent weeks for physical load-out, while off-warrant "shadow" stocks sit at their lowest level since the exchange began reporting them in 2020.
The details
The mechanism behind this drawdown is straightforward supply loss layered on top of an already-thin market. Gulf smelters run on cheap, abundant natural gas, which is precisely what fighting involving Iran has disrupted: physical damage to Al Taweelah and gas-supply disruption that forced Qatalum to cut output by around 40% both trace back to the same regional conflict, and together they knocked Gulf production to its lowest level in more than a decade. That the Mozal smelter closure in Mozambique happened for a completely unrelated reason -- high energy costs, not conflict -- and still landed in the same two-month window shows how a market already running with little spare capacity can be pushed toward a record low by two unconnected shocks arriving close together, rather than needing one single dramatic cause.
What makes the current inventory level more fragile than the headline tonnage alone suggests is its composition. Almost all of what remains in LME warehouses as freely available stock -- roughly 93-95% by recent estimates, up sharply from 72% in April -- is Russian-origin metal, and the bulk of that is held by a single market participant. A large, concentrated position like that isn't really the same thing as broad market liquidity: it means the "spare" aluminium the market could theoretically draw on in a squeeze mostly sits with one holder, who has no particular obligation to release it at a price anyone else finds comfortable. India tells a related story from the other direction -- Indian-grade aluminium in LME warehouses has fallen from 236,000 tonnes to just 12,450 tonnes over the past year, as that metal has evidently been drawn down and shipped out to meet real physical demand rather than sitting in exchange warehouses.
The market-stress indicators corroborate that this is a genuine physical squeeze rather than a paper phenomenon. The LME's cash-to-three-months spread, which measures the premium for metal available right now versus metal for later delivery, flipped into backwardation in early March and now sits at an $80 premium, the tightest reading since 2007 -- a level that only shows up when buyers are willing to pay up meaningfully to get metal today rather than wait. Physical premiums tell the same story from a different angle: Japanese buyers, who negotiate contract premiums quarterly, agreed to pay $350 a tonne for second-quarter deliveries, the highest in 11 years, while Rotterdam's extrusion billet premium more than doubled to $1,100 over the LME base price. None of these figures require Gulf-conflict headlines to move markets on their own; together, they show real buyers in Asia and Europe already paying up for physical metal well before LME headline stock numbers caught up to reflect just how tight the market had become. The LME price itself is up 14% to $3,650 a tonne since the fighting began, a comparatively modest move set against the scale of the physical premiums -- a gap Reuters' Andy Home flagged as a paradox worth watching, since it suggests the exchange price has room to catch up if physical scarcity persists.
Why it matters
Aluminium is a genuinely global input -- packaging, aerospace, automotive and construction all depend on it -- so a supply squeeze this concentrated has a wider reach than most single-metal disruptions. For Indian buyers and producers specifically, the story cuts two ways: India is both a major aluminium producer whose own exchange-warehouse stock has been drawn down sharply over the past year, and an economy that imports aluminium inputs for manufacturing, meaning tighter global supply and rising physical premiums abroad are a cost pressure worth watching even before they show up in the LME's own headline price.
Our read
Outlook: bullish. LME aluminium stocks are at a multi-decade low and still falling, with tight backwardation, surging physical premiums in Japan and Europe, and Gulf conflict damage that could take roughly a year to repair -- all pointing toward continued upward pressure on physical aluminium costs, even though the LME's own headline price has so far moved less sharply than those underlying stress indicators.
What to watch
- Progress on Al Taweelah's roughly year-long repair timeline and any further Gulf conflict escalation affecting Qatalum or other regional smelters
- Whether the dominant Russian-origin stockholder releases material onto the market, which could ease the current backwardation and physical premium spike
- The gap between the LME's 14% price gain and the much sharper moves in physical premiums and the cash-to-three-months spread
- Indian-origin aluminium stock levels in LME warehouses, now down to 12,450 tonnes from 236,000 a year earlier
For information only, not investment advice.
Aluminium price in India
metalscost.com India reference price as of 2026-10-16.
Detailed analysis
Timeline
- 2026-01-02: LME aluminium warehouse stocks stand at 509,250 tonnes, the starting point for 2026's roughly 50% drawdown.
- 2026-03-01: The LME cash-to-three-months aluminium spread flips into backwardation; South32 closes its 580,000-tonne-per-year Mozal smelter in Mozambique, citing high energy prices.
- 2026-04-01: Gulf conflict-related disruption, including damage to Emirates Global Aluminium's Al Taweelah smelter and a roughly 40% output cut at Qatar's Qatalum smelter, pushes Gulf regional aluminium production to its lowest level in over a decade.
- 2022-08-23: LME aluminium stocks previously bottomed at 271,450 tonnes in the aftermath of Russia's invasion of Ukraine -- the record low the current drawdown has now undercut.
- 2026-08-26: LME aluminium warehouse stocks fall to 246,925 tonnes, the lowest level in the exchange's 18-year public warehouse-stock record.
Supply Drivers
Gulf conflict damage to Emirates Global Aluminium's Al Taweelah smelter and a roughly 40% output cut at Qatar's Qatalum smelter, combined with South32's separate closure of the 580,000-tonne-per-year Mozal smelter in Mozambique, cut Western aluminium production by a combined 2.4 million tonnes over two months, pushing Gulf regional output to its lowest level in over a decade.
Inventory Drivers
LME aluminium warehouse stocks fell to 246,925 tonnes as of August 26, 2026, the lowest in the exchange's 18-year public record, after halving from 509,250 tonnes on January 2; LME-registered stock fell a third to 339,475 tonnes, and the market has gone 138 consecutive sessions without a daily net build.
Geopolitical Risks
Fighting involving Iran has directly disrupted Gulf aluminium production, damaging Emirates Global Aluminium's Al Taweelah smelter (requiring about a year to repair) and forcing Qatar's Qatalum smelter to cut output roughly 40% after drone attacks disrupted its natural gas supply, pushing regional output to its lowest level in more than a decade.
Refinery Output
South32 closed its 580,000-tonne-per-year Mozal aluminium smelter in Mozambique in March 2026, citing high energy prices, a closure unrelated to the Gulf conflict that compounded the same-period global supply squeeze.
What could lift prices
- LME aluminium stocks are at their lowest level in the exchange's 18-year public record, having halved in 2026 alone, with 138 consecutive sessions without a daily net build.
- The cash-to-three-months spread is in its tightest backwardation since 2007, and physical delivery premiums in Japan and Europe have surged to multi-year highs, both signalling genuine physical scarcity.
- Gulf smelter disruption from the Iran conflict, including a roughly one-year repair timeline at Al Taweelah, suggests the supply loss is not a short-lived disruption.
What could weigh on prices
- The LME price itself has risen a comparatively modest 14% since the conflict began, lagging the much sharper moves in physical premiums and spreads, which could mean the exchange price has yet to fully reflect the scarcity rather than confirming a durable rally.
- Concentrated Russian-origin ownership of remaining stock, rather than genuinely broad market tightness, could mean a single large holder's decision to release metal eases the squeeze faster than fundamentals alone would suggest.
Country impact
| Country | Impact | Reason |
|---|---|---|
| United Arab Emirates | High | Emirates Global Aluminium's Al Taweelah smelter near Abu Dhabi, one of the world's largest single-site smelters, sustained conflict-related damage requiring roughly a year to repair. |
| Qatar | High | Qatar's Qatalum smelter cut output by roughly 40% after regional drone attacks disrupted the natural gas supply it depends on for production. |
| Mozambique | Medium | South32's closure of the Mozal smelter in Mozambique, though driven by high energy prices rather than conflict, compounded the global aluminium supply squeeze in the same period. |
| Russia | Medium | Russian-origin metal now accounts for roughly 93-95% of freely available LME aluminium stock, concentrated largely in the hands of a single market participant, shaping how thin and fragile the remaining exchange inventory cushion actually is. |
| India | Medium | Indian-grade aluminium held in LME warehouses has fallen sharply, reflecting metal drawn down to meet physical demand even as India remains a major global aluminium producer. |
Industry impact
| Industry | Effect | Reason |
|---|---|---|
| Construction | Negative | Tighter global aluminium supply and sharply higher physical delivery premiums raise input costs for construction firms that depend on aluminium products. |
| Manufacturing | Negative | Automotive, aerospace and packaging manufacturers that rely on aluminium face rising physical premiums even where the LME's headline price has moved less sharply than the underlying scarcity would suggest. |
Who gains, who loses
- Aluminium producers outside the Gulf and Mozambique with spare capacity: Tight global supply and surging physical premiums in Japan and Europe favor producers able to sell into a market where buyers are paying up sharply for immediate delivery.
- The dominant holder of Russian-origin LME warrant stock: Controlling roughly 93-95% of the freely available exchange stock gives a single participant significant influence over how and when the tightest part of the market's inventory cushion is released.
- Aluminium buyers in Japan and Europe: Japanese buyers accepted a $350-a-tonne Q2 delivery premium, the highest in 11 years, while Rotterdam's extrusion billet premium more than doubled to $1,100 over the LME base price, directly raising costs for physical buyers.
- Gulf aluminium producers Emirates Global Aluminium and Qatalum: Conflict-related damage and gas-supply disruption have directly cut their production, with Al Taweelah requiring roughly a year to repair and Qatalum's output down about 40%.
Other ways this could play out
- If Al Taweelah's roughly year-long repair proceeds on schedule and the Gulf conflict doesn't escalate further, Gulf aluminium output could begin recovering toward its prior run-rate over the coming quarters.
- If the dominant Russian-origin stockholder chooses to release material onto the market, the current backwardation and physical premium spike could ease faster than the underlying supply disruption alone would imply.
- If Gulf disruptions persist or worsen, the gap between the LME's relatively modest 14% price gain and the much larger physical premium moves could close through a sharper rise in the exchange price itself.
Price risks
- Further escalation of the Iran-linked Gulf conflict could extend or deepen the production loss at Al Taweelah, Qatalum and other regional smelters.
- Continued concentration of freely available LME stock in a single Russian-origin holder's hands adds a source of price volatility independent of underlying physical supply and demand.
- If the LME price begins catching up to the much larger moves already seen in physical premiums and spreads, aluminium could see a sharper repricing than the 14% gain recorded so far.
Historical comparison
- August 2022 vs August 2026: The prior record-low LME aluminium stock level of 271,450 tonnes, set in August 2022 after Russia's invasion of Ukraine, has now been undercut by the current 246,925-tonne level.
Technical view
Price is trading below both its 20-period and 50-period moving averages, a bearish alignment.
Computed from metalscost.com's own stored price history.
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