Copper Just Hit an All-Time High. But Where Is All the Copper?

Copper has set another all time high. Benchmark three month futures on the London Metal Exchange rose 1.3% to USD 14,703 a tonne on 8 September, marking a fourth consecutive session of gains and a second consecutive record. The metal is now up around 18% this year.

The immediate drivers are well known. Traders have been positioning ahead of potential US tariffs on imported refined copper, while operational problems at several major mines have added to supply concerns. Physical metal has also become harder to source in some markets.

Yet there is an interesting contradiction behind this record. Preliminary data from the International Copper Study Group showed the global refined copper market in an apparent surplus of around 131,000 tonnes in the first half of 2026, with refined production rising 2.4% even as mine production fell 1.1%.



So the global refined market was not in deficit. Yet copper was pricing as though near term availability was becoming tighter in some markets. The reason has less to do with how much copper exists in total and more to do with where that copper is, who controls it and whether it can reach the buyer that needs it.

The Copper Is Moving Towards the US

The first part of the story is the United States. Expectations around potential tariffs on imported refined copper have given traders and consumers a reason to move metal into the country ahead of any restrictions, because copper delivered there can fetch a premium over other markets.

The scale of that movement has become significant. COMEX copper inventories have climbed to a record 766,795 short tons, or roughly 696,000 tonnes, as market participants build stocks ahead of possible trade restrictions.

That matters because copper sitting in a US warehouse is not immediately available to a manufacturer in Europe or Asia. The metal still exists, but moving it back only makes sense if the price difference is large enough to cover the cost.

The result is a market that is becoming increasingly divided by geography. LME warehouse stocks have fallen close to 40% since late May, while Shanghai Futures Exchange inventories are down around 85% from their mid March peak.

The US has been drawing copper towards itself at a time when available stocks in other major markets are falling.

Why the Location of Copper Matters

Copper is a physical commodity, so its location matters. It has to move from mine to concentrate, smelter, refined copper, warehouse and eventually into manufacturing, and every stage takes time and money.

That makes copper different from a financial asset such as a share. A tonne sitting in a US warehouse cannot immediately satisfy a fabricator in China. It can be shipped, but only if the economics work.

This is why exchange inventories can tell different stories at the same time. COMEX stocks are at a record while LME and Shanghai inventories have fallen sharply.

The divergence does not mean one set of figures is wrong. It reflects copper moving towards the market where prices are strongest, leaving a smaller pool of readily available metal elsewhere.

A global inventory figure tells you how much copper is reported in the system. Regional inventories tell you where the pressure is actually showing up.

Warehouse Stocks Do Not Tell the Whole Story

There is another detail that makes inventory figures more complicated than they first appear.

Copper held in an LME approved warehouse is represented by a warrant that records ownership of the underlying metal. The physical copper can remain in the warehouse while the warrant changes hands, so the published stock figure does not mean every tonne is necessarily available to a new buyer.

Warrants can be cancelled when the owner intends to withdraw the underlying metal from the exchange warehouse system. The copper may remain physically in the warehouse for a period, but it has been earmarked for removal.

That is why headline warehouse stocks need to be read carefully. The relevant question is not only how many tonnes are recorded, but how much of that stock is still available to the market.

The LME publishes separate data on live and cancelled warrants alongside its stock figures, so the split is worth checking rather than taking the headline total at face value.

What the Futures Market Is Telling Us

Inventory data show where the metal is. The futures curve gives another clue about how valuable immediate supply has become.

When copper trades in contango, future prices sit above the spot price. In backwardation, the spot price trades above future prices, which can indicate that buyers are prepared to pay a premium for copper they can secure now.

The LME cash to three month spread has remained in significant backwardation, according to Investec's 8 September industrial metals update. That suggests prompt copper is still commanding a premium as the market adjusts to tighter availability.

That does not prove the world is running out of copper. It tells us something narrower: immediate metal is currently worth more than later metal.

Taken together, the price, inventory data and futures curve point to genuine near term tightness in parts of the market. They do not, by themselves, establish a long term global deficit.

The Global Balance Is Still in Surplus

The latest ICSG data show an apparent refined copper surplus of around 131,000 tonnes in the first half of 2026, up from about 114,000 tonnes a year earlier. Refined production rose 2.4% even as mined production fell 1.1%, with higher recycled output helping to fill part of the gap.

That means the record price is not evidence that a global shortage has already arrived. The refined market is still showing a surplus on the latest reported figures.

The balance could become less comfortable from here. Mine output is weakening, while refined production cannot rely on scrap indefinitely if ore supply continues to fall. The latest monthly data already offer a glimpse of that pressure, with June recording a seasonally adjusted deficit of around 86,000 tonnes, despite the first half as a whole remaining in surplus.

The ICSG figures also need to be treated as estimates rather than a precise count of every tonne in the market. Its headline balance relies on reported stocks, while a second calculation adjusts for estimated changes in Chinese bonded inventories that it cannot directly observe.

The longer term outlook is also unsettled. ICSG forecasts a refined surplus of around 96,000 tonnes for 2026 and 377,000 tonnes in 2027, while other forecasters, including JPMorgan, expect stronger demand to push the market into deficit.

That disagreement helps explain the record price. Investors are not just pricing today's surplus. They are trying to work out what supply and demand will look like once current stockpiles, trade flows and mine disruptions work through the system.

Temporary Squeeze or Structural Problem?

The current rally has elements of both.

The temporary part is the trade flow. Potential US tariffs have created a reason to move copper into the US, and that incentive could weaken if the policy uncertainty is resolved. If the price gap narrows, some of the metal accumulated in America could begin moving again.

Higher prices also encourage more recycling, substitution and production from higher cost operations. The problem is that the supply response takes time, particularly for new mines that require years of permitting, financing and construction.

That leaves the market balancing a short term physical squeeze against a longer term supply question. If US stockpiling fades and mine production recovers, some of today's premium could unwind. If inventories outside the US keep falling while mine supply remains constrained, the pressure could persist even with the refined market technically in surplus.

What This Means for Copper Miners

For equity investors, the copper price is only the starting point.

A miner's revenue is driven largely by the copper price multiplied by production. What reaches shareholders depends on what is left after mining and processing costs, royalties, sustaining capital expenditure and financing.

That creates a large difference between producers. A low cost operation with strong grades and rising output can turn a higher copper price into a substantial increase in cash flow, while a higher cost producer with declining grades or heavy capital requirements may capture far less.

The stage of the company matters as well. An established producer can benefit from a higher price relatively quickly, while a developer still needs to finance, permit and build its project before it can generate revenue.

For investors looking at copper equities, production growth, cash costs, ore grades, mine life, capital intensity and balance sheet strength matter alongside the copper price. The strongest exposure is not necessarily the company with the largest resource, but the one that can convert its copper production into sustainable free cash flow.

What Investors Should Watch Next

The copper price will remain the headline measure, but the physical indicators underneath it may prove more useful in deciding whether the rally has further to run.

LME inventories will show whether available copper outside the US continues to fall. Persistent declines would suggest that the regional squeeze has not yet eased.

COMEX inventories will show whether the US continues to attract copper ahead of potential tariff changes. Further sharp increases would indicate that trade policy remains an important force behind global flows.

SHFE inventories will offer a read on physical availability in China, one of the world's largest copper consuming markets. Continued falls would suggest that stocks there remain under pressure.

The futures curve will show whether buyers are still paying a premium for prompt metal. Persistent backwardation would support the view that near term supply remains tight.

Mine production and company guidance will matter most over the medium term. The key question is whether record prices eventually bring enough new supply online, or whether the industry's structural constraints prove harder to overcome.

The Bottom Line

Copper's latest record is not simply a story about the world running out of metal. It is a story about how copper is moving between regions and how much of it is actually available to buyers at any given time.

Large volumes have been pulled towards the US as traders position around potential tariffs, while LME and SHFE inventories have fallen sharply. At the same time, the refined market remains in an apparent surplus, leaving the price to reflect both current conditions and expectations about future supply.

For investors, the question from here is what happens once today's stockpiling and trade flows start to normalise. If stocks outside the US begin to rebuild, some of the current pressure could fade. If they continue to fall while mine supply remains constrained, the regional tightness is likely to persist.

The price tells us where copper is trading today. The inventories, physical flows and mine supply will tell us whether today's squeeze can last.