The Japanese stock market experienced a notable downturn today, with the Nikkei 225 index declining by 2.4%. Over the past five days, the index has seen a more significant drop of 3.48%, and it is down 1.4% over the last month. In terms of market performance, M3, Inc. emerged as the top performer in the Large Cap sector, posting a return of 6.9%. Conversely, Advantest Corp. struggled, recording a decline of 12.1%. The Mid Cap sector saw Asahi Intecc Co., Ltd. leading with a return of 7.71%, while Mitsui Mining & Smelting Co., Ltd. faced a decline of 12.28%. In the Small Cap category, Eole, Inc. stood out with an impressive return of 11.4%, while CellSeed, Inc. suffered the largest loss at 21.11%. Overall, the advance-decline ratio across the market showed 2,503 stocks advancing compared to 1,103 declining, resulting in a ratio of 2.27x. Large Cap stocks had 138 advancing against 39 declining, while Mid Cap stocks reported 213 advancing and 61 declining. Small Cap stocks led the way with 1,401 advancing and 357 declining, reflecting a robust performance in that segment.