Taiwan Semiconductor Manufacturing's stock has declined by 4.01% today, reflecting a bearish sentiment driven by risk-off trading in the semiconductor sector. This decline is attributed to heightened geopolitical tensions from the escalating U.S.-Iran conflict, which has increased market volatility and led to profit-taking in chip and AI-linked stocks. The broader market's reaction to these developments has resulted in significant pullbacks for semiconductor stocks, including TSMC, following a recent strong performance.