China Desk Digest 2026-10-10

Copper Backwardation Deepens as Chile Strike Tightens Supply

SHFE copper's front-month spread widened to 1,100 yuan per ton in backwardation, with the 2610 contract at 110,710 against 109,610 for 2611 (China domestic curve, as of 2026-10-09). That premium signals immediate tightness just as Chile's Centinela mine began its first-ever strike, with unions warning output cuts could start in about two weeks. LME cancelled warrants already stand at 43.25 percent of copper stock (LME warrant data, as of 2026-10-09). Traders should watch whether the spread extends as strike risk compounds the firm physical bid.

LME Copper Warrants Show Heavy Cancellation Pressure

LME copper opening stock was 235,225 tons, with cancelled warrants at 101,725 tons, a 43.25 percent cancellation ratio (LME warrant data, as of 2026-10-09). That is the strongest warrant pull among the metals tracked and points to metal leaving the warehouse system. Tin's cancellation ratio reached 22.27 percent on 4,310 tons of stock, while lead lagged at 11.08 percent (LME warrant data, as of 2026-10-09). Desk note: high copper cancellations typically precede tighter nearby availability.

Yangshan Premiums Jump Across Both Cargo Types

Yangshan copper certificate premiums averaged 135.00 dollars per ton, up 10.00, while bill of lading premiums also rose 10.00 to 130.00 (Yangshan copper premium, as of 2026-10-09). The parallel move in both kinds confirms stronger import demand into China rather than a one-off paperwork effect. Combined with the domestic backwardation, the premium lift suggests physical buyers are paying up for prompt metal. Watch whether the gains hold as the strike narrative develops.

Zinc and Tin Lead Overnight Metals Rally

LME tin climbed 3.02 percent and zinc 2.32 percent in Friday's overnight session, with copper up 1.68 percent and lead 1.37 percent (SMM_CN, 2026-10-10 17:17:00). Domestically, SHFE tin gained 1.73 percent and zinc 1.39 percent, while SHFE copper added 0.84 percent. COMEX silver rose 2.84 percent and gold 1.52 percent, both closing the week higher. The broad bid across base metals aligns with the warrant cancellations and premium strength flagged above.

Ivanhoe Q3 Copper Output Rebounds 19 Percent

Kamoa-Kakula produced 76,401 tons of copper in Q3, up 19 percent quarter-on-quarter, with mining rates rising 30 percent to 700,000 tons per month (SMM_CN, 2026-10-10 16:17:00). The company held its 2026 target of 290,000 to 310,000 tons but said output may only reach the lower end, and it carried about 43,000 tons of copper inventory at quarter-end. The rebound partly offsets strike-driven supply worries, though the softer guidance keeps the market's tightness narrative intact.

Data provenance

• China domestic term structure (M1-M2 spread, main contract) as of 2026-10-09
• LME cancelled warrants as of 2026-10-09
• Yangshan copper premium (USD/t) as of 2026-10-09
• China headlines, 2026-10-10
• English-native China flashes — SMM_EN / Mysteel_EN, 2026-10-10