The Japanese stock market is experiencing notable volatility, with the Nikkei 225 index down by 5.93% over the past 30 days. This decline reflects broader market challenges, as the advance-decline ratio indicates a significant imbalance, with 1,044 stocks advancing compared to 2,491 declining, resulting in an overall ratio of 0.42x.
In the large-cap segment, FANUC Corp. emerged as the top performer, achieving a return of 6.51%, while SoftBank Group Corp. struggled, posting a return of -5.23%. Mid-cap stocks saw Nippon Electric Glass Co., Ltd. leading with a return of 9.87%, contrasted by MODEC, Inc., which fell by 7.35%. The small-cap sector was dominated by Canon Electronics, Inc., which reported an impressive return of 11.66%, while SERENDIP Holdings Co. Ltd. faced significant losses, down by 12.83%.

The advance-decline ratios further highlight the market's struggles, particularly in small-cap stocks, where only 439 advanced against 1,291 that declined, yielding a ratio of 0.34x. As the market navigates these challenges, investors are closely monitoring upcoming earnings reports from various companies, which may influence future trends.