MediaTek is trading 3.13% up at TWD 4,280.00 on October 21, 2026, amid a broad rally in Taiwan shares. - The TAIEX rose sharply during the session, while major electronics stocks advanced. - MediaTek’s recent Dimensity 9600 Pro announcement is relevant company news, but available reporting does not directly link it to the gain. - Trading volume was not included in the price context; no clear, directly linked company-specific catalyst or matching event ID was identified.