Copper and Base Metals: LME Daily — 2026-09-30
Copper retreated from record highs as weak Chinese industrial data and a stronger dollar weighed on demand outlook ahead of China's Golden Week holiday, though supply concerns from Chilean mine strikes limited losses. Base metals broadly declined, with zinc, lead, nickel and tin posting significant losses overnight as macroeconomic headwinds offset tight physical supply.
Copper and Base Metals: LME Daily — 2026-09-30
Top developments
Copper Slides on China Growth Concerns, Settles Near $14,450
Benchmark three-month copper fell to its lowest level in more than a week on Monday, dropping 1.8% to $14,364/mt as weak Chinese industrial profit data and a rising dollar pressured demand sentiment ahead of China's weeklong Golden Week holiday. On Tuesday, copper steadied at $14,447/mt, up 0.2%, as a looming strike threat at Centinela in Chile offset headwinds from currency strength and elevated oil prices. The metal remains on track for its third consecutive monthly gain despite recent volatility.
Chile's Centinela Workers Vote to Strike, Raising Supply Risk
Workers at Antofagasta's Centinela copper mine voted to reject the company's wage offer, triggering strike action that threatens to disrupt a major Chilean operation and bolster physical supply concerns already weighing on markets. The labor dispute came at a critical juncture as copper approaches a third straight monthly gain, with supply tightness—reflected in collapsed smelter treatment charges—giving miners leverage. Spot treatment charges have fallen to zero, a historic reversal that underscores the structural shortage underpinning copper's strength.
Base Metals Post Mixed to Negative Performance; Zinc Leads Losses
Zinc, lead, tin and nickel all posted significant overnight declines, with zinc falling sharply after its 2% LME cash gain on Friday. LME nickel dropped 0.55% to 123,140 yuan/tonne on Tuesday, while SHFE copper edged up 1.36% despite international weakness, reflecting divergent sentiment between Shanghai and London markets ahead of the China holiday. Alumina futures led sectoral declines, falling 2.07%, as broader base metal weakness persisted.
US Copper Tariff Uncertainty Persists; COMEX-LME Spread Narrows
No U.S. refined copper tariff announcement emerged by midday Monday, though policy risk remains unresolved. The COMEX-LME arbitrage spread has narrowed significantly as near-month trading opportunities fade, and long-term siphoning expectations resurface among market participants. Goldman Sachs flagged tariff uncertainty and AI infrastructure demand as key drivers of continued metals volatility heading into Q4. The unresolved tariff regime has created a two-tiered market dynamic, with traders cautious on directional positioning until clarity emerges.
Local view
Shanghai Metals Market (SMM): Morning meeting summaries noted LME copper consolidating on a weak note, with trading volume at 10,000 lots and modest daily moves. SHFE copper futures holders remain positioned for high volatility post-Golden Week, with expectations of potential cumulative inventory builds when markets reopen.
Sina Finance (China): Industry analysts tracked copper, zinc and nickel sentiment on September 29, with consensus flagging rate normalization uncertainty and National Day holiday positioning as key drivers. Local futures houses noted short-term technical consolidation and elevated geopolitical risk premia.
Sohu (China): Shanghai Zhongqi Futures analysts reported night-session weakness in SHFE copper and nickel contracts, with commentary highlighting potential post-holiday inventory accumulation and tariff policy headwinds as near-term pressure points. Consensus favored range-bound trading until directional catalysts emerge post-holiday.
Rumbo Minero (Peru/Chile): Copper edged up to $14,450/mt on Centinela strike risk, with analysts noting that supply disruptions continue to offset macro headwinds. Reports emphasized the structural tightness in global copper markets and its impact on regional mining revenues.
Context & numbers
LME Benchmark Prices (as of 2026-09-30):
- Three-month copper: ~$14,450/mt (up 0.2% Tuesday; down from $14,668.5 opening Monday)
- SHFE copper: 112,000 yuan/tonne range (SHFE up 1.36% vs. LME weakness)
- Zinc (LME cash): $4,060/tonne (up 2% Friday; slipped 1% Monday)
- Nickel: 16,314.50/mt spot indication (down 0.55% Tuesday)
- Aluminium: ~$3,250.00/mt (alumina down 2.07% overnight)
- Lead: $1,897.00/mt; Tin: $50,215.00/mt
Market Dynamics:
- ICSG forecast 2026 global copper deficit of 150,000 metric tonnes, the first structural shortage since 2009
- Smelter treatment charges collapsed to ~$0/tonne, reversing traditional pricing leverage to favour miners
- Chile's 2026 copper production forecast cut to 5.27 million tonnes due to operational disruptions and weather (El Niño impacts)
- LME copper volatility driven by tariff uncertainty, China demand signals, and mine labour disputes
On the radar
- China Golden Week Holiday: Markets will reopen October 7–8 after weeklong closure; traders bracing for post-holiday inventory data and any cumulative demand signals from manufacturing surveys.
- Centinela Strike Timeline: Labour negotiations ongoing; duration and scope of potential work stoppage unknown; could affect ~30,000 mt/month production if prolonged.
- US Tariff Clarity: Administration signal on refined copper tariffs could materialise late October; critical for COMEX-LME arbitrage positioning and global flow decisions.
- ICSG September Bulletin: International Copper Study Group monthly bulletin expected late week; will update 2026 market balance forecasts and global stock levels.
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