〔Day Digest〕Copper Extends a Six-Day Run as China Physical Tightens; Morowali 100kt NPI Cut Reignites Nickel — LME Fund Lengths Trim

0. Daily Arc

Copper printed a sixth consecutive up session on LME at $14,751.5/ton, edging toward a record as Chinese physical supply tightened ^[1][2]. SHFE copper closed +1.24% at 111,320 yuan/ton; international copper added +2.00% to 100,220 yuan/ton ^[3][4]. Nickel took the thematic baton: Indonesia's Morowali complex ordered NPI cuts on El Niño water scarcity, taking ~100,000 tons of supply offline — roughly 30% of single-month design capacity ^[5][6]. Battery materials kept climbing: lithium carbonate 2701 (+2.35%, turnover >15.8B yuan) and polysilicon (+2.39%), with August spodumene imports at a record 906,600 physical tons ^[7][8]. Gold and silver dropped more than 1% as hawkish Fed officials kept a year-end hike on the table ^[3][9]. The contradiction is positioning: LME investment fund net longs shrank across the base-metal complex, with the copper cut driven by shorts, not fresh longs ^[10][11].

1. Copper: Physical Squeeze, Spec Trim

• **[ESCALATED] LME 3M copper +0.6% to $14,751.5/ton, sixth straight up session, heading toward a record on falling inventories and pre-holiday Chinese buying ^[1][2]. SHFE copper main +1.24% to 111,320 yuan/ton; international copper +2.00% to 100,220 yuan/ton ^[3][4].**
• The driver is supply, not demand. LME available copper dropped to 133,725 tons after 9,600 tons of Asian warrant cancellations; the LME cash-3M spread flipped to a $46/ton premium from an $86/ton discount on Sept 14 ^[1]. LME copper warehouse stocks fell 1,625 tons on the day ^[12]. The Yangshan copper premium slipped to $119/ton on Monday but is still 65% above the start of the month ^[1].
• **Smelter pressure:** Chinese copper concentrate TC continues falling, sulfuric acid by-product prices have rolled over, and market chatter has built around smelter maintenance ^[3]. August copper concentrate imports rose MoM but fell YoY; scrap copper imports fell MoM ^[3].
• **Tariff overhang:** the US has not yet decided on refined copper tariffs; the COMEX-LME spread is volatile, but most recently the COMEX premium has firmed again ^[3]. COMEX warehouse inventory flipped to increases, with Eligible inflows dominating ^[13].
• **Supply additions on the radar:** Anhui's Chating copper-gold find was announced as super-large scale at a State Council Information Office briefing; Tongling Electric put 45mm microcrystalline phosphorus copper balls into stable mass production ^[14][15].
• **Positioning warning:** LME investment fund copper net long shrank 827 lots WoW to 39,800 lots — longs +522, but shorts +1,349 ^[11]. Commercial net short widened 604 lots to 33,900 lots ^[11]. The price rally is being met with hedging, not fresh spec length.

2. Nickel: The Morowali Cut

• **[NEW] Morowali NPI cuts:** Indonesia's Morowali industrial park on Sulawesi ordered NPI output cuts after El Niño drought reduced water used for equipment cooling; the park notified firms over the weekend ^[5][16]. Volume at risk: ~100,000 tons of NPI, ~30% of single-month design capacity at the park's 4.2M tons/year nameplate (350,000 tons/month) ^[5][6].
• **Price reaction:** LME 3M nickel +0.7% to $16,430/ton, SHFE nickel +0.97% to 124,400 yuan/ton; LME warehouse stocks rose 102 tons on the day ^[12][1][9]. LME nickel is still ~18% below its May high, so the move is the first credible supply-side argument for a rebound ^[5].
• **Positioning:** LME investment fund nickel net long shrank 2,899 lots WoW to 13,400 lots ^[10]. Speculative shorts are the squeeze target, not spec longs.
• **Source-control note:** the Morowali cut story runs through two short-relay items without primary smelter confirmation ^[5][16][6]. Treat as a moisture-shock signal, not a verified production halt.

3. Battery Materials: Lithium and Polysilicon Lead

• **Lithium carbonate 2701:** turnover topped 15.8B yuan, +2.35% to 134,160 yuan/ton, with +5,000 lots in intraday open interest ^[8]. Lithium carbonate main contract closed +2.53% to +2.61% across sessions ^[9][17].
• **Polysilicon main:** +2.39% at the close and +2.78% mid-session ^[9][17]. GFEX warrants 25,520 lots, +10 lots ^[18].
• **Industrial silicon main:** +0.18% at the close, +0.3% mid-session; GFEX warrants 33,257 lots, -94 lots ^[18][9][17].
• **Lithium carbonate warrants:** GFEX 35,858 lots, -2,447 lots DoD — the largest drawdown among the GFEX metals listed ^[18].
• **Imports (the demand-side anchor):** August spodumene imports hit a record 906,600 physical tons (+22.6% MoM), equivalent to ~76,000 tons LCE (+18% MoM); Australian share fell to 36% (-5.4% MoM), South Africa leapt 104.5% to #2, Zimbabwe +245% ^[7]. August lithium carbonate imports 30,391 tons (+14% MoM, +39% YoY) ^[7].
• **Quality-of-data flag:** the LCE conversion assumes a high low-grade share, so actual incremental lithium salt supply is "relatively modest" per SMM — the price move is running ahead of the supply math ^[7].

4. Other Base Metals and Macro

• **Aluminum:** LME 3M +0.28% to $3,276/ton; SHFE aluminum -0.14% to 24,270 yuan/ton ^[1]. LME inventory -75 tons ^[12]. BofA: 2026 aluminum supply deficit, 2027 flips to slight surplus as new Indonesian supply lands H2 2027; aluminum may bounce in coming weeks but faces downside pressure next year ^[1].
• **Zinc:** LME 3M flat at $3,930/ton; SHFE -0.6% to 26,715 yuan/ton ^[1]. LME inventory -2,125 tons; fund net long 53,800 lots, -5,383 lots WoW — the largest WoW reduction among the base metals ^[12][10].
• **Lead and tin:** LME lead inventory -3,025 tons; fund net short 25,100 lots, narrowed 642 lots ^[12][10]. LME 3M tin -0.22% at the close after a +1% overnight session; LME tin inventory -135 tons; fund net long 1,920 lots, -512 lots ^{[12][9][10][19]}.
• **Iron ore and steel:** iron ore -1.05%, hot-rolled coil -0.18% ^[9]. Coking coal +0.23% at the close (intraday +1.22%); coke +0.46% to +0.68% ^[9][17]. Stainless steel +0.29% to +0.47% ^[9][17].
• **Precious metals:** COMEX gold -0.69%, COMEX silver -1.08%; SHFE gold -1.06% at the close, SHFE silver -1.8% ^[9]. Platinum main -1.48%, palladium main -1.32% ^[9].
• **Macro:** hawkish Fed officials are keeping a year-end hike live; Jinyuan Futures notes the market is now pricing whether one more hike this year materializes ^[3]. Oil fell four straight sessions after the US held off on a new Houthis attack, and risk appetite improved into the Asian session ^[3][19].
• **Africa copper long-dated:** Zambia's ZESCO laid out a 3 million ton copper output goal alongside the power mix to support it — recent hydro weakness is forcing a renewables-and-grid investment plan, a multi-year demand-side anchor for African copper supply ^[20].

5. Contrarian and Tail Risks

• **Positioning vs. price divergence:** LME fund net longs shrank WoW on copper, aluminum, zinc, nickel, and tin even as LME copper logged a sixth up day and the cash-3M spread flipped to premium ^[1][10]. The copper cut is short-driven — longs actually rose 522 lots while shorts added 1,349 lots ^[11]. The squeeze potential is being met with hedging, not fresh spec length.
• **Nickel elasticity check:** the 100,000-ton Morowali cut is ~30% of single-month nameplate but rests on a 4.2M-ton/year base, so annualized impact is ~1.1M tons of optionality only if drought persists ^[5][6]. LME nickel is still ~18% below the May high, so the market is treating this as a one-off moisture shock, not a structural reset ^[5].
• **Source-control:** the Morowali cut story runs through short-relay items without primary smelter confirmation ^[5][16][6]. The LME weekly COT is a one-week snapshot through Sept 18 and does not yet capture today's price move ^[10][11]. The Anhui Chating copper-gold find and the Zambia 3M-ton target are long-dated anchors, not near-term supply ^[15][20].
• **Falsifiable tests:** (i) whether Morowali output resumes within 2-4 weeks, (ii) whether the US resolves the refined-copper tariff question before month-end, and (iii) whether LME copper available stock can rebuild above 200,000 tons without a fresh round of Asian warrant cancellations ^[3][1][6].