The Japanese stock market faced significant declines today, with the Nikkei 225 index dropping by 3.95%. Over the past week, the index has seen a more pronounced decrease of 6.11%, and it has plummeted by 10.09% in the last 30 days, reflecting a challenging environment for investors. In terms of market performance, the advance-decline ratio indicates a broader trend of declining stocks, with 1,014 advancing against 2,405 declining across all market capitalizations, resulting in a ratio of 0.42. Large-cap stocks showed a similar trend, with 81 advancing and 92 declining, while mid-cap stocks had 107 advancing versus 162 declining. Small-cap stocks were particularly affected, with only 438 advancing against 1,223 declining. Among individual stocks, Fujitsu Ltd. emerged as the best performer in the large-cap category, achieving a return of 6.26%. Conversely, Lasertec Corp. struggled, posting a return of -14.05%. In the mid-cap sector, SHIFT, Inc. led with a return of 7.69%, while SUMCO Corp. faced a decline of 16.53%. The small-cap segment saw Tsuburaya Fields Holdings, Inc. excel with a remarkable return of 26.14%, while Toyo Gosei Co., Ltd. lagged with a return of -16.4%. Overall, the market's performance today underscores the volatility and challenges currently faced by investors in Japan.