Japanese stock market experienced a downturn on February 4, with the Nikkei 225 index falling nearly 1.5%. According to Jin10, the decline was primarily driven by losses in electronic and technology stocks. Notable companies such as Raytheon Photonics saw a drop of 6.8%, while Nomura Research Institute and Recruit Holdings both fell by 6.3%. Investors are closely monitoring quarterly earnings reports, with Marubeni and Mitsubishi Heavy Industries set to release their results later on Wednesday.