Tariff uncertainty tests coppers record rally
中文标题
关税不确定性考验铜价创纪录上涨行情
Core conclusion · Tlines extraction
Copper dropped more than 3% after hitting a record $14,875/t on the LME as a Reuters report revealed the White House has not yet decided whether to impose tariffs on refined copper. The tariff premium had pushed COMEX above LME and drawn record inflows into US warehouses, leaving around 680,000 tonnes in COMEX storage by early September. Longer-term supply fundamentals remain supportive, but a preliminary refined surplus of roughly 131,000 tonnes and an easing LME backwardation suggest prices had run ahead of current fundamentals. The tariff decision remains the key catalyst for the arbitrage to close.
- Institution
- ING THINK
- Published
- 09/10/2026
- Research topic
- Copper
- Time horizon
- 2026
Key arguments
- Copper reversed sharply from a record $14,875/t after Reuters reported no US decision has been made on refined copper tariffs, removing some tariff premium from prices.
- The tariff premium drove COMEX above LME, opening a profitable import window and pulling record metal volumes into US warehouses, leaving inventories elsewhere tighter.
- Longer-term fundamentals remain supportive with mined output down 1.1% year-on-year in H1, but the refined market still shows a preliminary surplus of around 131,000 tonnes.
- Easing indicators of immediate tightness, including stabilised LME inventories and a narrower backwardation, suggest the move toward $15,000/t ran ahead of current fundamentals.
- The eventual tariff decision will determine whether the arbitrage closes via a narrowing US premium or a final import surge before duties take effect.
Key numbers
- LME copper record high
- $14,875/t
- Copper intraday decline
- more than 3%
- Proposed refined copper tariff from January 2027
- 15%
- Proposed refined copper tariff from 2028
- 30%
- July US copper inflows
- over 220,000 tonnes (monthly record)
- COMEX warehouse holdings by early September
- around 680,000 metric tonnes (about 8x early 2025)
- Estimated total US copper holdings including off-exchange
- above 1 million tonnes
- H1 mined copper output change year-on-year
- -1.1%
Main risks
- Further weakening in US tariff expectations could trigger another sharp price reversal as the tariff premium unwinds.
- If tariffs are ruled out, the US premium should narrow and metal could return to international markets, easing nearby tightness.
- If tariffs proceed, imports could rise again before duties take effect but slow afterwards, leaving US inventories ample and elsewhere tighter.
- The refined market remains in surplus, so prices could stay vulnerable if demand from grids, EVs or data centres disappoints.
- A weaker-than-expected recovery in mined output during the remainder of 2026 would be needed to avoid the first annual mine supply contraction since 2017.
Corresponding source evidence
The sell-off followed a Reuters report that the White House has yet to decide whether to impose tariffs on refined copper.
Market estimates put total US holdings above one million tonnes once copper outside the exchange system is included.
ICSG data show that mined output was 1.1% lower year-on-year in the first half.
Context: the conclusion is Tlines' automated extraction, not the institution's wording. Quoted evidence is publisher wording. Scope and date must travel with the conclusion.
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AI analysis
Cross-institution comparison · COPPER
| Institution / report | Published | Direction | Source-checked target | Horizon |
|---|---|---|---|---|
| ING THINKTariff uncertainty tests coppers record rally | 09/10/2026 | Bearish | — | Not stated |
| Saxo BankCommodity weekly Gold steadies as oil tightness and growth fears divide markets | 10/16/2026 | Neutral | — | Not stated |
| Saxo BankInvestor QA AI selloff hot CPI and what can investors do | 10/15/2026 | Neutral | — | Not stated |
| Saxo BankMarket Quick Take - Korean chip stocks tumble as US bank earnings begin - 13 October 2026 | 10/13/2026 | Bullish | — | Not stated |
How this page was produced
Tlines extracted the conclusion, arguments, numbers and risks above from the report published by ING THINK on 09/10/2026, then structured them for comparison. The publisher's own wording is reachable through the source link on this page and is displayed in full above. Last updated 10/17/2026. Methodology · Source policy · AI usage · Request a correction