Teck Resources shares rise 6.73% after-hours on strong Q4 copper output and reaffirmed guidance.

Teck Resources surged 6.73% in after-hours trading following a strong fourth-quarter copper production report and reaffirmed guidance. The miner’s output exceeded expectations, with Q4 2025 production reaching 134,100 tons, while full-year output met guidance. These results, coupled with renewed confidence in medium-term prospects, drove the post-market rally. Earlier in the premarket session, U.S.-listed shares had already risen 5% on similar production updates. The move aligns with broader market optimism amid cooling Canadian producer prices and mixed sector performance, though valuation concerns and operational delays mentioned in other reports did not overshadow the production-driven optimism.