Nikkei 225 Surges 2,000+ Yen on Aug 5, But Market Sentiment Remains Muted as Japan Stocks Follow KOSPI

According to the Nikkei, on August 5, the Nikkei 225 surged over 2,000 yen intraday, yet market sentiment remained muted due to excessive correlation with South Korea's KOSPI. Tokyo securities firms complained that Korean fund flows dominate Japanese stock movements rather than company fundamentals. AI-related stocks, including Ibiden, Advantest, and Fujikura, rallied sharply and lifted the index, but foreign long-only investors shifted capital to domestic stocks instead, with short-term index futures driving gains.

Japanese securities analysts noted that the linkage between Nikkei 225 and KOSPI intensified in April after geopolitical developments sparked AI and semiconductor buying globally. Market participants expect a genuine recovery in September when major brokerages host investor conferences, during which overseas investors typically conduct company-specific analysis before resuming purchases.