Optical communication and telecom equipment stocks rose broadly in South Korea and Hong Kong in early October 2 trading. Mercury reached the upper limit at 6,250 Korean won, up 29.80%, while Hoi Kwong Core gained as much as 4.48% and other regional shares also advanced. The moves followed news of expanded U.S. big-tech infrastructure investment, Micron’s higher capital spending and strong performance in related optical communication stocks, reinforcing expectations for data-center construction and demand for high-speed fiber, cables, transceivers and semiconductor components.