London Metal Exchange (LME) copper reaches $11,100/mt by September 30, 2026 in the base case, $10,500 in the bear case, and $13,000 in the bull case. The mechanism is a 540,000-tonne year-to-date build in visible inventories colliding with the widest sell-side divergence in metals: Goldman Sachs sees a $10,000–$11,000 range for 2026 while J.P. Morgan’s Q3 forecast sits at $13,000.

Copper trades at $6.19/lb on COMEX as of July 17, 2026 — down 1.65% on the day (TradingEconomics) — with LME three-month copper churning inside a wide $11,500–$13,000/mt July range. The single most important datapoint is inventory: global visible copper stocks have risen 540,000 tonnes this year to nearly 1.5 million tonnes, per J.P. Morgan Global Research, while Goldman Sachs projects a 160,000-tonne global surplus for 2026. This call maps the glut, the AI-infrastructure demand case against it, and the levels that decide between the banks’ duelling forecasts.

Key Levels:

• Asset: COMEX copper at $6.19/lb; LME 3M in a $11,500–$13,000/mt July range — TradingEconomics, July 17, 2026
• Base case target: $11,100/mt by September 30, 2026 — J.P. Morgan’s identified support zone ($11,100–$11,200)
• Bull case target: $13,000/mt — J.P. Morgan’s Q3 2026 forecast, requiring Chinese dip-buying to absorb the surplus
• Bear case target: $10,500/mt — the midpoint of Goldman Sachs’ $10,000–$11,000 2026 range
• Major support: $11,100–$11,200/mt — J.P. Morgan downside support zone
• Major resistance: $13,000/mt — the top of July’s trading band
• Invalidation level: a weekly LME close above $13,200/mt — signals demand is out-running the inventory build

Methodology

This call synthesises Goldman Sachs Research’s copper outlook (Eoin Dinsmore, December 11, 2025, updated surplus estimates), J.P. Morgan Global Research’s 2026 quarterly forecast path and inventory tracking (Gregory Shearer and Dominic O’Kane), and spot data from TradingEconomics as of July 17, 2026. Lookback window: Q4 2025–July 2026. Caveats: the two banks’ forecasts anchor this note’s bull and bear cases, so the analysis inherits their assumptions — Goldman’s surplus arithmetic and J.P. Morgan’s Chinese dip-buying behaviour — and COMEX-LME spreads distorted by US Section 232 tariff revisions make the US price an unreliable global signal.

The data: a visible glut meets an invisible floor

Variable	Level	Context	Source
COMEX copper spot	$6.19/lb	−1.65% on the day	TradingEconomics, Jul 17
LME July range	$11,500–$13,000/mt	Wide, headline-driven band	Market data via Sook Trading
Visible global inventory	~1.5M tonnes	+540kt year-to-date	J.P. Morgan Global Research
2026 projected surplus	160kt	After a 500kt surplus in 2025	Goldman Sachs Research
China refined demand, Q4 2025	−8% y/y	Stimulus and front-loading faded	Goldman Sachs Research
GS 2026 range vs JPM Q3	$10,000–11,000 vs $13,000	Widest major-bank divergence in metals	GS; JPM

Sources as listed, collected July 17, 2026. Time window: Q4 2025–July 2026.

Why are copper inventories rising in 2026? Because the demand engine stalled while supply kept arriving: Chinese refined copper demand fell an estimated 8% year-on-year in the fourth quarter of 2025 as stimulus effects and tariff-related front-loading faded (Goldman Sachs Research), and China still represents roughly 60% of global demand, per J.P. Morgan. The result is a visible inventory pile of nearly 1.5 million tonnes — up 540,000 tonnes so far this year — on top of a 2025 global surplus that Goldman revised up from 215,000 to 500,000 tonnes, with a further 160,000-tonne surplus projected for 2026. An inventory build of that scale is the market’s shock absorber: every demand headline, from AI data centres to grid spending, lands on a cushion of metal that must be drawn down before prices can sustainably re-rate higher.

Copper remains “a major beneficiary of investments in grid and power infrastructure globally, as AI and defence heighten the need for robust and secure energy networks.”

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

The mechanism: energy prices are the swing variable

The path from $12,000-area prices to the $11,100 base case runs through macro headwinds rather than copper-specific collapse. J.P. Morgan’s demand model is explicit about the energy channel: Brent holding near $110/bbl would strip roughly 1.4 percentage points from 2026 copper demand growth, and Middle East escalation has kept exactly that scenario live — the same supply-risk premium TIS tracked in the WTI Hormuz-premium analysis. Higher energy prices feed inflation, inflation feeds the Federal Reserve’s hawkishness, and a firmer dollar — the DXY-to-105 path — raises copper’s cost in every non-dollar economy simultaneously.

The steelman for the bulls is behavioural: Chinese buyers have been disciplined, not absent. They stepped back during the price spike and, per J.P. Morgan, can be expected to return “as dip buyers” whenever the market approaches their level — mid-March de-stocking ran at 55,000 tonnes a week, showing how fast the cushion can drain when China re-engages. Add the structural story — Goldman still sees the market flipping to deficit from 2029 and $15,000 copper by 2035 — and the bull case is that the 2026 surplus is the last cheap entry of the decade. That is a credible thesis about 2027–2035; it is not a reason the metal outruns a 1.5-million-tonne inventory pile in the next ten weeks.

What the model misses

Inventory analysis assumes visible stocks tell the whole story — they never do. Chinese bonded warehouses and state stockpiling can absorb or release metal without appearing in LME or COMEX data, and the mid-March 55kt weekly de-stocking episode shows the pace at which “visible” can become misleading. The Section 232 tariff regime has bifurcated the market: the COMEX premium over LME distorts arbitrage flows, and the April 2 revision to derivative-product rates makes the US price a policy artefact as much as a demand signal, per Argus Media. And roughly 15% of global copper production depends on sulfuric acid availability — a supply-side fragility no demand model captures. Finally, this note’s base case leans towards Goldman’s arithmetic over J.P. Morgan’s $13,000; if that judgement is wrong, it is wrong by nearly $2,000/mt, which is the honest width of uncertainty here.

“Despite the more supportive swing in Chinese fundamentals, bearish macro risks should continue to dominate in copper as long as energy prices remain on the rise in the near term.”

— Gregory Shearer, Head of Base and Precious Metals Strategy, J.P. Morgan
(J.P. Morgan Global Research)

Disconfirmation: what kills this call

The $11,100 base case rests on assumptions that could fail. The call is wrong if any of these fire:

• A weekly LME close above $13,200/mt. That breaks July’s ceiling on real volume and says demand is absorbing the surplus faster than the inventory data implies.
• Visible inventories start falling by 50kt+ per week. Sustained Chinese dip-buying at March’s pace would drain the cushion within a quarter and hand the market to J.P. Morgan’s $13,000 path.
• An energy de-escalation that drops Brent below $80. The macro-headwind leg of the thesis needs elevated energy prices; a collapse removes the inflation channel and revives global demand growth.
• A major supply disruption. A strike or grade collapse at a top-five mine (Escondida, Grasberg, Kamoa-Kakula) of 200kt+ annualised would erase the 160kt surplus outright.

What to watch next

Weekly LME and Shanghai inventory reports are the single best signal — direction matters more than level. The July 28–29 Federal Open Market Committee decision sets the dollar path that copper trades against, and China’s July Purchasing Managers’ Index (due August 1) tests whether the −8% demand trough is behind. On the chart: $11,100–$11,200 is the line the base case expects to hold; $13,000–$13,200 is the ceiling the bulls must break. The Gold official-bid downgrade is the companion read on how the hawkish-Fed regime is repricing the metals complex from the top down.

FAQ

What is the copper price forecast for Q3 2026?

This analysis targets $11,100/mt on the LME by September 30, 2026 — J.P. Morgan’s support zone — with a bull case of $13,000 and a bear case of $10,500. COMEX copper trades at $6.19/lb as of July 17, 2026.

Why are Goldman Sachs and J.P. Morgan so far apart on copper?

Goldman anchors on surplus arithmetic — 500kt in 2025, 160kt projected for 2026 — implying a $10,000–$11,000 range. J.P. Morgan anchors on Chinese dip-buying behaviour and AI-infrastructure demand, forecasting $13,000 for Q3. The gap is the widest major-bank divergence in metals.

Is the AI data-centre demand story priced into copper?

Partly. Grid, power and data-centre investment underpins Goldman’s 2029 deficit call and $15,000 target for 2035, but near-term the market must first digest a 1.5-million-tonne visible inventory pile that grew 540,000 tonnes in 2026 alone.

How do energy prices affect copper demand?

Through growth: J.P. Morgan estimates Brent sustained near $110/bbl would cut 2026 copper demand growth by roughly 1.4 percentage points, while the inflation pass-through keeps central banks hawkish and the dollar firm — both copper-negative.

What would flip this call bullish?

Sustained visible-inventory draws above 50,000 tonnes a week, a weekly LME close above $13,200/mt, or a major mine disruption removing 200,000+ annualised tonnes — any of which would validate J.P. Morgan’s $13,000 path instead.

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.