Publication Date: 8 September 2026
LME three‑month copper futures rallied sharply on Monday (7 September), hitting an all‑time high of $14,533 per metric ton, surpassing the previous peak of $14,527.5 set in January this year. Prices later pared some gains but stayed firmly elevated, finishing the day roughly 0.7% higher. LME copper has risen about 17% year‑to‑date and soared 47% over the past 12 months, reviving market expectations for a super‑cycle in industrial metals.
The immediate trigger behind the rally is market expectations of US import tariffs on refined copper. Betting on potential tariff measures, traders have shipped hundreds of thousands of tonnes of copper into the United States for arbitrage purposes. COMEX copper inventories have built up markedly, while deliverable stocks in LME and Asian markets keep shrinking. Severe geographical inventory mismatch has tightened physical availability outside the US and underpinned LME copper prices. Although the US Commerce Department submitted relevant policy recommendations to the White House two months ago, markets continue to price‑in tariff risks as a key near‑term trading theme.
Supply‑side headwinds persist. Major copper‑producer Chile has suffered extreme weather events, prompting miners including Antofagasta and Lundin to cut production guidance. Tight copper‑concentrate conditions remain and mine‑side constraints cannot be relieved in the short run. The International Copper Study Group (ICSG) has revised down global mine‑output growth forecasts for 2026 and projected a notable annual concentrate deficit.
On the long‑term demand side, AI data centres, power‑grid upgrades and electric vehicles create incremental copper consumption and reshape demand patterns. Growth drivers are shifting away from real‑estate and traditional manufacturing toward computing infrastructure and renewables, reinforcing market views of a long‑run copper deficit. A softer US dollar also lent support to dollar‑denominated base metals.
Market analysts warn that the current rally carries heavy policy‑betting features. The biggest near‑term risk factor is whether US copper tariffs will actually take effect. Prices could correct rapidly should tariff implementation fall short of expectations. Sustained copper appreciation will pass higher costs downstream to electrical equipment and new‑energy industries.
Disclaimer: This report is for industry reference only and does not constitute investment advice.