Stock Market Impact: Goldman Sachs projects a 1.5% reduction in global copper mine supply (~350,000 tons) in 2026‑27, creating material tightness that could lift LME copper prices above $14,000/ton in the second half of 2026 if a U.S. tariff is imposed in January 2027; a no‑tariff outcome would keep prices near current levels or around $12,800/ton in 2027.
Listed Companies and Sectors: The bank rates Lundin Mining and Antofagasta as “Buy” on the basis of low price‑to‑net‑asset‑value multiples (≈1× vs peers 1.5‑2×) and high copper exposure (Lundin 85% of revenue). Lundin benefits from the Vicuna RIGI project approval and a final investment decision expected late 2026; Antofagasta’s growth is driven by the Centinela and Pelambres assets, which together represent ~80% of output and are projected to deliver ~95% of production growth this decade.
Investment Flows: Strong U.S. copper imports in H1 2026 are expected to draw metal out of the ex‑U.S. system, with U.S. inventories projected to rise by ~900,000 tons to 1.8 million tons by year‑end, creating a deficit of ~640,000 tons in 2026 and ~170,000 tons in 2027, which may attract foreign portfolio investment into copper‑related equities.
Fiscal or Monetary Policy: No direct fiscal or monetary measures are mentioned; the primary policy driver is the anticipated U.S. tariff on copper imports slated for January 2027.
