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Shanghai copper reaches a 16-month high due to supply concerns

Shanghai copper prices jumped by more than 16 months on Thursday, as China resumed trading after National Day. Concerns over supply from large mines supported the price in a market that was already tight.

By 0330 GMT, the most traded copper contract at the Shanghai Futures Exchange had risen 3.64%, to 86250 yuan per metric tonne ($12102.72). The contract reached its highest level since May 22, 2020 at 86 390 yuan earlier in the session.

As of 0333 GMT, the benchmark three-month copper price on London Metal Exchange had risen by 1.11% to $10,787.5 per tonne. On Wednesday, it briefly reached $10,815, a 16-month high.

The International Copper Study Group reduced its estimate of 2025 market surplus to 178,000 tonnes from 289,000 due to disruptions in major mines, including Freeport’s massive Grasberg mining complex in Indonesia which has been closed for a full month.

The group expects to have a deficit of 150,000 tons in 2026 compared to its previous estimate, which was a surplus of 209,000 tons.

Teck Resources reduced its production forecast at the flagship Chilean Copper Mine Quebrada Blanca until 2028 on Wednesday.

The dollar's downward trend also helped copper prices. The weaker dollar means that commodities priced in dollars are cheaper for traders who use other currencies.

The most active contact, which is tin, rose 2.86% to 286,010 Yuan per ton, as Indonesia, the top exporter, intensified its crackdown this week on illegal tin mines.

On Monday, Indonesia transferred assets, including smelters, equipment and PT Timah, a state-owned tin mining company, to the miner. President Prabowo subianto urged all authorities, including the military, Custom Office and Coast Guard, to continue efforts to stop illegal exploitation.

Nickel, aluminium, and zinc all saw increases of 1.49%. Lead increased by 0.89%.

($1 = 7.1265 Chinese yuan) (Reporting by Dylan Duan and Lewis Jackson; Editing by Subhranshu Sahu) $1 = 7.1265 Chinese Yuan (Reporting and editing by Dylan Duan, Lewis Jackson)

(source: Reuters)