South32 Drops in Early Trading Ahead of ASX After $100m Copper Plan Raises Cost Worries
South32 closed at A$4.03, down 4.28% on Monday, as the S&P/ASX 200 fell 1.45% and materials stocks slumped. Sierra Gorda, 45% owned by South32, announced a $100 million, five-year copper exploration plan in Chile. Investors weighed the new copper push against ongoing cost concerns at South32’s Hermosa project in Arizona. The company also cut its fiscal 2026 production guidance.