On March 30, Japanese equities weakened significantly. The Nikkei 225 Index closed down 2.79%, with deeper losses seen intraday, while the Topix Index also declined by around 2.9%. The market structure was highly concentrated, with heavyweight technology stocks dragging down the index. Advantest fell 5.19%, SoftBank Group dropped 6.31%, TDK declined 4.42%, Fanuc fell 4.22%, and Tokyo Electron also moved lower. These companies are concentrated in semiconductor equipment, electronic components, and automation, forming the core growth segment of the Japanese market. Due to the high concentration of weights, technology stocks had an outsized impact on the index. Advantest accounts for more than 12%, SoftBank over 5%, while TDK and Fanuc both exceed 2%. When these stocks correct simultaneously,