Gold Fields shares surge 8.61% after-hours as Q3 gold production rises 22% and costs decline.

Gold Fields surged 8.61% in after-hours trading following the release of strong third-quarter 2025 results, including a 22% increase in gold-equivalent production to 621,000 ounces, driven by ramp-ups at Salares Norte and Tarkwa mines. The company also reported reduced all-in costs to $1,835/oz, underscoring operational efficiency. Strategic moves, such as acquiring a 10.55% stake in Founders Metals for $50 million, and mixed analyst actions—RBC Capital lowering its price target to $45 but maintaining an Outperform rating, while BMO Capital raised its target to $44—further bolstered investor confidence. These developments, coupled with robust production growth and cost discipline, directly aligned with the stock’s upward trajectory.