MediaTek Stock Drops 9.9% Amid Profit-Taking and US Tariff Threats Targeting Semiconductor Space

MediaTek is trading at TWD 3,315.00, down 9.9% following a sharp reversal from its July rally, driven by profit-taking and renewed US tariff threats targeting the semiconductor space. The decline follows a 6.1% drop on July 28 as trade tensions pressure AI-exposed chipmakers. Sentiment is weighed down by a broader global semiconductor sell-off and growing concerns about sustainability of AI spending. Increased competition from Chinese chipmakers adds downward pressure. MediaTek Dimensity Auto automotive platform supports 5G Sub-6GHz and Wi-Fi 7. The MDDC 2026 conference focuses on cross-device seamless AI agent experiences across phones, cars, AI glasses, and edge computing.