Teradyne shares surged during the regular session, buoyed by the company's announcement of its new Magnum E2 memory test system designed to meet the rising demands of AI and high-performance computing. This product launch, coupled with positive sentiment highlighting the company's established role in robotics and automation, provided a strong catalyst for investor interest. The stock also benefited from a broader rally across the semiconductor industry, as peers such as Cohu, Onto Innovation, and KLA Corporation all recorded notable gains during the same period.