London Metal Exchange (LME) copper reaches $14,500/t by December 31, 2026 in the base case, $15,500 in the bull case, and $12,500 in the bear case. The mechanism: a 640,000-ton ex-US supply deficit meeting a mid-year US tariff decision, with the AI-datacentre demand premium as the swing variable.

The base case rests on the sharpest supply repricing of the cycle: Goldman Sachs cut its global mine supply estimate by 350,000 tons on June 2, 2026 and lifted its year-end target more than 10% to $13,735/t, after disruptions at two tier-one operations in Indonesia and the Democratic Republic of Congo that the bank does not expect back at full capacity before 2028, per Crux Investor. Citigroup goes further — $14,500/t this month and $15,000/t within 12 months. The thesis breaks if any one of four signals fires, listed in the Disconfirmation section.

Key Levels:

• Asset: LME copper, $13,980/t as of June 5, 2026, up 10% year-to-date; Comex settled at a record $6.20/lb — Crux Investor, Yahoo Finance
• Base case target: $14,500/t by December 31, 2026 — Citigroup’s near-month marker extended on the deficit math
• Bull case target: $15,500/t — fires if the mid-year US refined-copper tariff decision confirms import levies and Q4 LME inventories keep draining
• Bear case target: $12,500/t — Goldman’s supply-only valuation floor if the AI-demand premium unwinds — Crux Investor
• Major support: $13,000/t — the June breakout shelf the LME only just cleared — Yahoo Finance
• Major resistance: $14,500/t — Citigroup’s end-June objective and the pre-record congestion zone
• Invalidation level: weekly LME close below $12,465/t — Goldman’s pre-revision target, i.e. the market pricing the supply shock back out

Methodology

This call triangulates three published anchors collected June 1–10, 2026: Goldman Sachs Research’s June 2 supply revision (350,000 tons cut; ex-US 2026 deficit raised tenfold to 640,000 tons from 60,000), Citigroup’s June targets ($14,500 near-month, $15,000 12-month), and spot/positioning data from LME and Comex via Crux Investor and Yahoo Finance. The bear anchor is Goldman’s supply-only floor of roughly $12,500/t, which strips the AI premium. Caveats: bank targets bundle a confirmed supply deficit with an unconfirmed AI-demand assumption; tonnage guidance from force-majeure operations is revision-prone; and the US tariff decision is a binary political event no model prices cleanly.

The data: a deficit that did not exist in December

The supply side flipped regimes in nine months. The world’s second-largest copper mine — Grasberg in Indonesia — declared force majeure after underground flooding in September 2025, and the DRC’s Kamoa-Kakula complex cut 2026 production guidance by 90,000 tons after seismic disruptions; neither returns to full capacity before 2028, per Crux Investor. Stockpiles outside the United States are draining as US imports accelerate ahead of the tariff ruling, an asymmetry HSBC has warned could produce a “super-squeeze,” per IndexBox.

What does the copper deficit mean for prices in 2026? A copper deficit is the gap between refined supply and consumption, and Goldman Sachs now estimates it at 640,000 tons outside the United States for 2026 — a tenfold increase on its prior 60,000-ton forecast, driven by the Grasberg force majeure and Kamoa-Kakula’s guidance cut. At roughly 2.5% of annual global consumption, a deficit of that size cannot be bridged by inventory draws for long: LME copper has already risen 10% year-to-date to $13,980/t, and Comex contracts settled at a record $6.20/lb as US buyers pre-positioned for a possible import tariff. Historically, deficits above 2% of consumption have resolved through demand destruction at sharply higher prices rather than through supply response, because mine restarts and expansions operate on three-to-five-year lead times — which is why both Goldman and Citigroup raised targets into a rising market rather than fading it.

Source / metric	Level or target	Horizon	Basis
LME spot	$13,980/t	June 5, 2026	+10% YTD — Crux Investor
Comex settlement	$6.20/lb (record)	June 2026	US tariff pre-positioning — Yahoo Finance
Goldman Sachs target	$13,735/t	End-2026	Raised from $12,465 on June 2 — Crux Investor
Citigroup target	$14,500 / $15,000/t	End-June / 12 months	Deficit + AI infrastructure — IndexBox
Ex-US deficit (GS)	640,000 tons	2026	Up from 60,000-ton prior estimate — Crux Investor
Supply cut (GS)	350,000 tons	2026 mine supply	Grasberg + Kamoa-Kakula — Crux Investor

Sources: Goldman Sachs Research June 2, 2026 note and Citigroup targets via Crux Investor and IndexBox; spot via LME/Comex, June 5–10, 2026.

“[Copper is] a major beneficiary of investments in grid and power infrastructure globally, as AI and defence heighten the need for robust and secure energy networks… One key driver of the commodity’s price is likely to be a mid-year decision from the US administration on refined copper tariffs.”

— Eoin Dinsmore, Research Analyst, Goldman Sachs
(Yahoo Finance)

The mechanism: three bids, one binary

Three demand channels are stacking on a shrinking supply base. First, the structural bid: grid and power-infrastructure build-out, with hyperscale data centres estimated to consume on the order of 50,000 tons of copper per facility, per Yahoo Finance — the same AI-capex wave The Industry Spread examined in its Nvidia year-end call. Second, the policy bid: US importers are front-running the mid-year refined-copper tariff decision, pulling metal into US warehouses and draining everywhere else. Third, the financial bid: record Comex settlements pull momentum flows that feed on themselves. The steelman against the call is that two of those three bids are reversible — the tariff bid disappears the day the decision lands either way, and the AI bid is exposed to a thickening stack of US data-centre moratorium bills. If both unwind together, Goldman’s $12,500 supply-only floor is the gravity, not Citigroup’s $15,000.

What the model misses

The most honest contrarian voice is Goldman’s own December read. Before Grasberg’s flooding fully repriced and Kamoa-Kakula cut guidance, the bank’s 2026 outlook projected a 160,000-ton surplus, with Dinsmore writing that “we do not expect the global copper market to enter a shortage any time soon” and prices capped in a $10,000–11,000 range, per Goldman Sachs Research. Six months later the same desk models a 640,000-ton deficit. That 800,000-ton swing in under a year is the model risk in both directions: tonnage estimates from force-majeure operations are revised constantly, and a faster-than-guided Grasberg restart would unwind the deficit math as quickly as it appeared. The macro overlay is the second blind spot — a hawkish Federal Reserve repricing supports the dollar and pressures the entire commodity complex, the same dynamic capping the metals this week.

“Recent Federal Reserve remarks further anchor this narrative, with policymakers emphasizing inflation risks.”

— Bas Kooijman, CEO and Asset Manager, DHF Capital S.A.
(Finance Magnates)

What would invalidate this call

The base case to $14,500/t breaks if ANY ONE of these four signals fires:

• The US tariff decision lands against import levies. The US stockpiling bid — the proximate driver of record Comex settlements — unwinds within weeks, and metal flows back to LME warehouses.
• US data-centre moratorium legislation advances. Virginia’s HB 1515 blocks final approvals until grid interconnection requests are fulfilled (or July 2028), and federal bill S.4214 would freeze construction of facilities above 20 megawatts; six further state bills are active, per Crux Investor. Passage of the federal bill cuts the AI demand leg directly.
• Grasberg or Kamoa-Kakula guides to an earlier restart. The 640,000-ton deficit assumes neither returns before 2028; a 2027 restart timeline compresses the deficit and the price with it.
• A weekly LME close below $12,465/t. That is Goldman’s pre-revision target — trading below it means the market has priced the supply shock back out, and the thesis is simply wrong.

What to watch next

Three catalysts order the second half. The mid-year US refined-copper tariff decision is the binary — Dinsmore flags it as the single key price driver, and either outcome forces a repricing. LME inventory data gives the weekly tell on whether the ex-US drain is accelerating; a stabilisation would blunt the squeeze case. And the metals complex’s macro backdrop runs through the dollar: the same Federal Open Market Committee (FOMC) repricing pressuring silver’s ratio-compression case and the euro’s dollar-overvaluation thesis applies to copper with equal force. Freeport-McMoRan and Ivanhoe Mines Q2 production reports in July provide the first hard tonnage check on the disruption math.

FAQ

What is the copper price forecast for the end of 2026?

The base case in this call is $14,500/t on the LME by December 31, 2026, between Goldman Sachs’s $13,735 year-end target (raised June 2) and Citigroup’s $15,000 12-month objective. Spot traded at $13,980/t on June 5, 2026, up 10% year-to-date.

Why are copper prices rising in 2026?

Three forces: a supply shock — Grasberg’s force majeure and Kamoa-Kakula’s 90,000-ton guidance cut produced a 640,000-ton ex-US deficit per Goldman Sachs; US import front-running ahead of a mid-year refined-copper tariff decision; and structural grid and AI-datacentre demand, estimated at roughly 50,000 tons of copper per hyperscale facility.

What is the bear case for copper?

Goldman’s supply-only analysis implies a floor near $12,500/t if the AI-demand premium unwinds. The triggers: US data-centre moratorium legislation (Virginia HB 1515, federal S.4214), an anti-tariff US decision unwinding the stockpiling bid, or an earlier-than-2028 restart at either disrupted mine.

When do the disrupted copper mines come back online?

Goldman Sachs assumes neither Grasberg (force majeure since September 2025 flooding) nor the Kamoa-Kakula complex (seismic disruption) returns to full capacity before 2028. Any guidance revision toward 2027 would compress the deficit and invalidate the upside case.

What should traders watch next for copper?

The mid-year US refined-copper tariff decision (the binary catalyst per Goldman’s Eoin Dinsmore), weekly LME inventory data for the ex-US drain, July Q2 production reports from Freeport-McMoRan and Ivanhoe Mines, and the dollar path set by the FOMC.

This article is informational analysis only and is not financial, investment, or trading advice. Foreign-exchange, commodity, and equity markets are highly volatile and can lose substantial value rapidly. Leveraged products carry total-loss risk and may exceed the initial margin posted. Past performance and historical correlations do not guarantee future results. Do your own research and consult a regulated financial adviser before making any investment decision.