〔Overnight Brief〕Zinc Backwardation Widens to $132.37/t on Latin America Supply Cut, Mine Output Seen Down 2.1% to 12.5Mt in 2026 — Lithium Joins the Shortage Roster, US Rare-Earth Processing Still Years Out

0. Weekly Arc

The overnight tape was a broad industrial-metals bid, with SHFE zinc up 1.37% leading the complex as LME zinc extended its weekly winning streak toward a four-year closing high ^[1][2]. The driver is not Chinese demand — it is a Latin America-led mine cut, an HSBC-projected 2.1% drop in 2026 global zinc output to 12.5 million tons, and a physical squeeze visible in the $132.37/ton spot premium ^[2].

1. Zinc: Supply Mechanism and the Cash Market

• **[NEW] HSBC global commodities team:** warned of "extreme" zinc supply tightness, projecting 2026 global mine output at 12.5 million tons, down 2.1% YoY on Latin America production cuts and smelter disruptions ^[2].
• **[NEW] LME cash-3M spread:** the spot premium hit $132.37/ton, the largest backwardation of 2026, signaling competition for warehouse metal ^[2]. LME zinc rose 1.7% to $3,824/ton, tracking a fifth consecutive weekly gain and a four-year closing high ^[2].
• **[NEW] Jinrui Futures analysts:** "concerns about overseas zinc supply disruptions remain" — supply-side, with macro sentiment amplifying volatility ^[2].
• **[NEW] Jeff Currie** (senior commodities strategist) on X: the convergence of physical tightness, currency depreciation, and policy intervention is a "typical" feature of a structural commodity bull cycle ^[2].

2. Overnight Complex Read

• **[NEW] SHFE night session tape:** international copper +0.95%, SHFE copper +0.57%, SHFE aluminum +0.91%, SHFE lead +0.56%, SHFE nickel +1.04%, SHFE tin -0.10% ^[1]. Alumina +0.97%, aluminum alloy +0.50%, stainless steel +0.49% ^[1]. Tin was the lone decliner; zinc the leader on the supply-tightness narrative ^[1].

3. The Next Shortage Story: Lithium

• **[NEW] Anna Wong** (Bloomberg Chief US Economist) on X: lithium was "flagged in earnings as being in shortage, that wasn't apparent last earning season," driven by "mining/export reduction in China" ^[3]. Single-source, social relay — treat as a directional signal, not a confirmed squeeze.

4. Rare Earths and the Processing Gap

• **[ONGOING] Tony Sage**, CEO and Executive Chairman of Critical Metals, on Bloomberg Open Interest: the US is "still years away from breaking China's grip on key rare-earth metals," with processing capacity the biggest hurdle; his Greenland project remains on track for 2029 production ^[4].

5. Pipeline Supply: Peru's $33B Push

• **[NEW]** Peruvian Prime Minister **Luis Galarreta** told Congress the Fujimori government (took office July) targets at least $33 billion in mining investment over the five-year term, with 240 exploration and extraction projects authorized this year; private companies are expected to drive the spend ^[5]. Falsifiable test: actual project approvals against the 240 target ^[5].