〔Overnight Brief〕AI-Safety Warning Cracks Compute Metals as 10Y Tops 5% and Fed September Odds Climb >90%; DRC's 1.72Mt H1 Record and Congo Task Force Counter; Tariff Trade Still Unwinding

0. Weekly Arc

[NEW] An AI-safety backlash converged with a US yield surge and pushed compute metals into a clean risk-off: the LME copper curve flipped from cash-driven backwardation to outright contango in early September, SHFE copper fell 1.07% to 107,030 yuan, and the BIS Q3 report noted funds are reducing concentrated AI bets even as the industry has not actually contracted ^[1][2]. The macro pin is the dominant mechanism — 10Y briefly above 5% for the first time since 2023 and Fed September hike odds past 90% ^[2]. Counterweights are real supply stories: the DRC's record H1 1.72Mt copper exports, a Congo task force for the US strategic-minerals partnership, and Canada's 12-month permitting target ^[3][4][5].

1. The Compute-Metals Break

• **[NEW] AI-safety warning (single source / relayed):** Several US AI giants publicly flagged safety risks and called for slower iteration; Nvidia and chip peers whipsawed, dragging copper and tin — the "compute metals" — below trend on the day ^[1].
• **[NEW] LME close (mixed):** Aluminum +0.15% at $3,256.5, copper +0.66% at $14,117.5, nickel -2.98% at $15,950, lead -0.19% at $1,876.5, tin +0.49% at $52,085, zinc +0.71% at $3,831.5 ^[6].
• **[NEW] LME nickel:** main contract down over 2% intraday to $16,110/ton, the worst LME performer ^[7].
• **[NEW] LME copper structure:** cash/3M flipped from backwardation to contango since early September, a classic unwind of the tariff-stocking squeeze ^[1].

2. Macro Pinch and the Tariff Unwind

• **[NEW] Yields and the Fed:** 10Y US Treasury yield briefly above 5% for the first time since 2023; Fed September 25bp hike odds climbed past 90% ^[2].
• **[NEW] SHFE copper:** closed -1.07% at 107,030 yuan; the C-L spread narrowed sharply; LME copper stocks rose; domestic destocking slowed ^[2].
• **[NEW] Everbright Futures read (SMM relay):** the bigger pressure on copper is macro plus the tariff channel — the White House indicated no decision yet on refined copper tariffs, and the tariff-driven US stockpiling "logic has unraveled" and is still being repriced ^[2].
• **[ESCALATED] Risk-off regime:** layered with Middle East energy-price inflation, the AI-safety shock and elevated yields, the backdrop is unambiguously risk-off for base metals ^[1][2].

3. Supply-Side Counterpunch

• **[NEW] DRC (mining ministry):** H1 2026 copper exports +4.5% YoY to a record 1.72Mt; the US and Europe share of exports roughly doubled versus 2025 under a "diversification push" ^[3].
• **[NEW] Congo-US deal:** the cabinet approved a task force to accelerate implementation of the strategic-minerals partnership with Washington; copper and cobalt are the focus, with Western investment in mind ^[4].
• **[NEW] Canada:** Resources Minister Tim Hodgson said tax changes will act as investment incentives in the commodities space and set a 12-month target for energy and mining project reviews ^[8][5].
• **[NEW] China batteries, August (China Automotive Battery Innovation Alliance via SMM):** power+storage output 237GWh, +69.8% YoY (LFP 195.3GWh / 82.4% share, +79.8%; NMC 41.2GWh / 17.4%, +33.5%); exports +87.5%; domestic installations 79GWh ^[9].
• **[NEW] Lixin Resources IPO (001246.SZ):** China's largest nickel-ore trader; 2024 global #1 in nickel-product trade volume; 2025 revenue 40.255B yuan, net 2.862B yuan; offer of 172.89M shares (~10% of post-issue), targeting 4.047B yuan raised ^[10].
• **[NEW] Alkane Resources:** updated 579Mt total resources — 8.62M oz gold, 1.01Mt copper, 42kt antimony; Tomingley and Bjorkdal reserves up 3-4%; Costerfield gold resources +13%, antimony +40% ^[11].
• **[NEW] Copper foil (CaiLian She note, single source):** supply gap expected to peak in 2027 with value growth exceeding CCL and PCB; selected firms already in HVLP4 mass production ^[12].
• **[NEW] Angang Heavy Machinery:** phosphor-copper alloy tender; production and distribution bidders must show registered capital ≥500k yuan ^[13].

4. Contradictions and Tail Risks

• **[ONGOING] Market vs industry:** the BIS Q3 report flags concentrated-AI de-grossing and the LME copper curve has flipped ^[1], yet DRC exports hit a record and Congo is institutionalizing the US deal ^[3][4]. The open question is whether the macro/AI shock drags fundamentals or fundamentals absorb it.
• **[NEW] Alumina (truncated source):** producers say recent oversupply caps further upside and some smelters may... ^[14] — the line is cut; treat as a data point, not a thesis.
• **[NEW] Lithium 99.5% battery-grade and spodumene concentrate daily (9/15):** headline only, no figures ^[15].
• **[NEW] WSJ Basic Materials Roundup:** the wire item references South32, Aneka Tambang and others but provides no detail in the relay ^[16].
• **Source control:** the "compute-metals break," the LME curve flip, and the BIS flow read all route through a single relayed Securities Times summary ^[1] — one source, not three.