MediaTek is trading 4.49% lower at TWD 4,045.00 on October 29, 2026, amid broader weakness in Taiwan shares.
- Taiwan shares opened lower, and Taiex losses widened as heavyweight stocks weakened and memory-chip gains cooled.
- No MediaTek-specific announcement directly explaining the decline was identified; its third-quarter results conference is scheduled for October 30.
- Available evidence points to broader Taiwan market and semiconductor sentiment, not a confirmed company-specific catalyst.