The Lode

For most of this year, the answer to every tight Western metals market has been the same: the metal exists, it is simply in China.

This week that answer started to fail.

Chinese copper, zinc and aluminium inventories all fell simultaneously. LME aluminium stocks reached a 36-year low. Fund positioning also shifted across the complex, but through mechanics that differed sharply from metal to metal. The geographic explanation is running out of room.

The Metal Was in China. Now China Is Drawing Too.

The framework that has organised base-metals analysis through 2026 is geographic. Global balances looked adequate or comfortable while Western exchange inventories collapsed, and the reconciliation was that surplus metal had accumulated in China. London’s scarcity was a distribution problem, not necessarily a supply problem. That framework requires China to hold a cushion.

This week, Shanghai Metals Market reported copper cathode social inventory at 88,900 tonnes, down 20,600 tonnes on the week and 51,700 tonnes below the same point last year — almost 37% lower year on year. Seven-region zinc ingot stocks fell 37,100 tonnes to 232,800 tonnes. Aluminium ingot inventory dropped another 37,000 tonnes to 815,000 tonnes. Three markets with entirely different supply chains, drawing at once. At the same time, LME aluminium stocks fell to 245,975 tonnes, their lowest since 1990.

Zinc shows the trade-off particularly clearly. LME zinc inventory jumped 9,975 tonnes to 110,500 tonnes on 3 September, extending the rebuilding of exchange stocks after Chinese exports began reaching LME warehouses in Hong Kong. At the same time, SMM’s seven-region Chinese inventory fell by 37,100 tonnes. The two moves do not establish a tonne-for-tonne transfer, but they illustrate the trade-off: exports can relieve London while reducing China’s own refined-metal cushion. That is materially different from metal simply sitting in the wrong warehouse.

The positioning data add a second layer. Funds added almost identical net length to aluminium and zinc in the week to 28 August — 6,510 lots and 6,074 lots respectively. But four-fifths of aluminium’s increase came from bears closing positions, while zinc’s came entirely from new buying, with shorts actually increasing alongside. One is predominantly capital leaving the opposite side of the trade. The other is new bullish capital arriving. They will not necessarily behave the same way when the physical story next moves.

Two things prevent this becoming a story about universal scarcity. Lead is the first control case. Funds are net short, Chinese social stocks are building and LME warehouses still hold nearly 397,000 tonnes. Nickel is the second: high inventories, weak downstream demand and stainless stocks accumulating. If Chinese industrial demand had simply accelerated across the board, both should be showing more evidence of it. Neither does.

So this is not a demand boom. It is a set of increasingly fragmented physical markets in which the important question is no longer simply how much metal exists, but where it sits, in what form, and who can actually get hold of it.

LME Positioning Intelligence — Bears Leave Aluminium, Bulls Arrive in Zinc

Funds added nearly identical net length to aluminium and zinc, through opposite mechanics. Aluminium’s move was 79.9% short covering. Zinc’s was driven by fresh long buying. Copper barely moved while the physical trade tightened. Lead remains the only fund net short.

Read the note →

Aluminium Analysis — The Short Base Shrinks

Fund shorts fell 11.2% in a week to 41,337.68 lots, against LME stocks at a 36-year low and inventory heavily concentrated in Russian-origin metal. Deteriorating deliverability appears to be increasing the risk of maintaining short exposure even without another price squeeze.

Read the note →

Lead Intelligence — The Only LME Metal Funds Are Short

A 109,000-tonne global surplus gives funds a fundamental reason to remain bearish lead. But LME stocks have fallen almost 60,000 tonnes from their recent peak and SHFE stocks are drawing. The bear case still holds. Its cushion is getting smaller.

Read the note →

China Metals Intelligence — The Inventory Draw Broadens

Copper, zinc and aluminium are now destocking simultaneously in China. Lead is rebuilding modestly and nickel remains loose. The draw is metal-specific, not evidence of a broad demand surge.

Read the note →

Wednesday — LME Commitments of Traders

Investment fund positions, 28 August 2026. Reported in lots.

Funds are net long five of the six major LME base metals. Aluminium and zinc added within 437 lots of each other. Read the components and they are not the same trade: aluminium’s increase was 79.9% short covering, while zinc’s came from new longs even as shorts also increased.

Lead is the only net short, and its net position became more bearish through both sides reducing exposure — longs leaving faster than shorts.

This report published Wednesday rather than the usual Tuesday, delayed by the UK bank holiday on 31 August.

Thursday — SMM Chinese Inventories

Source: Shanghai Metals Market. Inventory definitions differ by metal and absolute levels are not directly comparable.

Copper sits almost 37% below its year-earlier level. Guangdong has drawn for 14 consecutive trading days to a 2026 low, with high-quality copper quoted at a 340 yuan/t premium to the front-month contract.

Zinc’s 37,100-tonne draw removes much of the cushion that distinguished it from copper a week ago.

Aluminium is the one to read carefully. Production held steady near 874,700 tonnes weekly and the liquid-metal ratio rose to 78.78%, so part of the ingot draw reflects metal bypassing the ingot pool rather than simply faster end consumption.

Aluminium — LME stocks at 245,975 tonnes, the lowest since 1990, with the remainder heavily concentrated in Russian-origin metal. Fund shorts down 11.2% to 41,337.68 lots. Chinese ingot stocks fell another 37,000 tonnes. The Western availability problem is now being accompanied by a Chinese inventory draw.

Zinc — LME inventory rose 9,975 tonnes to 110,500 tonnes on 3 September, extending the rebuilding of exchange stocks after Chinese exports began reaching the LME system. At the same time, Chinese seven-region stocks fell 37,100 tonnes. Three-month zinc stood at $3,897.50/t, up 0.52% from the previous close.

Copper — Funds were almost static at +48,315.65 lots while commercial undertakings reduced their net short by 5,517.87 lots — the largest positioning move on the copper board. Chinese social inventory is below 90,000 tonnes. The important divergence is that commercial positioning is moving while investment-fund positioning is not.

Lead — The complex’s only fund net short at −24,433.07 lots, supported by a 109,000-tonne ILZSG surplus forecast. But LME stocks have fallen from 456,600 tonnes to 396,825 tonnes, while SHFE stocks are also drawing. Chinese social inventory moved the other way, rising 1,800 tonnes to 71,100 tonnes.

Nickel — Funds added 1,697.88 lots to +16,132.57, mostly through new buying. The physical picture disagrees: high inventories, weak stainless demand and downstream stocks building. It remains the clearest counter-signal in the complex.

Tin — Effectively dormant on positioning at +2,569.00 lots. Physically it is another matter: LME inventory stands near a three-year low, while Myanmar’s Wa State production remains well below pre-ban levels.

01 — Chinese Destocking Continuation

Copper, zinc and aluminium drew simultaneously this week. A second consecutive week, particularly alongside improving downstream activity, would strengthen the case that the move is progressing towards a tighter Chinese refined balance.

02 — Zinc’s Two-Way Flow

LME stocks rose 9,975 tonnes while Chinese stocks fell 37,100 tonnes. Chinese exports are already reaching LME warehouses, but the question is how much international supply China can provide while its domestic cushion shrinks.

03 — Aluminium’s Remaining Short Base

Fund shorts stand at 41,337.68 lots after an 11.2% weekly fall. Short covering generated four-fifths of last week’s increase in net length, giving that source of positioning support a measurable limit.

04 — Copper’s Commercial Shift

Commercial undertakings reduced their net short by 5,518 lots while funds did almost nothing. Whether that divergence persists is more useful than assuming the commercial move represents outright physical buying.

05 — Lead’s Inventory Direction

LME stocks are down almost 60,000 tonnes from their recent peak while Chinese social stocks rose 1,800 tonnes. A simultaneous draw across LME, SHFE and Chinese social inventory would make the existing fund short considerably more exposed.

06 — Whether Nickel Joins

It is the control case. If nickel inventories begin drawing alongside a recovery in stainless demand, the metal-specific interpretation of this week’s data becomes harder to sustain and something broader may be occurring.

The Bottom Line

This week removed an argument rather than settling one.

The geographic explanation — metal exists, it is just in China — requires China to be holding the cushion. This week Chinese copper, zinc and aluminium stocks all fell at once while Western availability remained historically constrained.

That does not mean the world is short of metal. Lead is building in China and abundant in London. Nickel is loose. Chinese aluminium production held steady while ingot stocks fell, partly because more metal moved in liquid form and never entered the ingot pool.

What it means is that the aggregate balance has become a poor guide to availability. The positioning data say the same from the other direction: aluminium and zinc added near-identical net length through opposite mechanics, and the headline figure conceals which.

If Chinese stocks keep falling while Western exchange availability stays constrained, the surplus described by global balances may increasingly fail to appear where the market needs it. At that point the distinction between a balanced market and a tight one stops being an accounting matter.

The Lode is published every Friday by Bloodstone Research, covering global metals, mining markets and the emerging economies that supply them. This document is published by Bloodstone Research for informational and institutional research purposes only. It does not constitute investment advice, an investment recommendation, an offer or solicitation to buy or sell any financial instrument, commodity or security, or a forecast of future performance. Market conditions and data may change without notice. Readers should conduct their own analysis and, where appropriate, seek independent professional advice before making investment decisions.

For institutional enquiries: [email protected]