Core Viewpoint - The Tokyo stock market experienced a decline on February 2, with the Nikkei 225 index falling by 1.25% and the Tokyo Stock Exchange index dropping by 0.85% due to a weak yen and external market influences [1][2]. Group 1: Market Performance - The Nikkei index closed down by 667.67 points at 52,655.18 points, while the Tokyo Stock Exchange index fell by 30.19 points to 3,536.13 points [2]. - Most of the 33 industry sectors on the Tokyo Stock Exchange saw declines, particularly in securities and commodity futures trading, mining, and banking, which experienced significant drops [2]. Group 2: Influencing Factors - The Tokyo stock market opened higher due to a weaker yen against the US dollar, but gains were not sustained [1]. - Reports of the ruling Liberal Democratic Party's dominance in the Japanese House of Representatives elections initially boosted the market, but this momentum did not last [1]. - The decline in the semiconductor sector on the New York stock market last Friday negatively impacted Asian markets, leading to a sell-off in Asian tech stocks, which further affected Tokyo's semiconductor-related stocks [1].