The Japanese stock market experienced a slight downturn today, with the Nikkei 225 index falling by 0.37%. Over the past five days, the index has seen a marginal decline of 0.14%, although it has gained 0.17% over the last month. In terms of market performance, the advance-decline ratio indicates a challenging day for stocks, with 1,310 advancing and 2,259 declining across all market capitalizations, resulting in a ratio of 0.58. Large-cap stocks faced significant pressure, with only 47 advancing against 127 declining, yielding a ratio of 0.37. Mid-cap stocks fared even worse, with 53 advancing and 217 declining, leading to a ratio of 0.24. Small-cap stocks showed some resilience, with 503 advancing but still facing 1,208 declines, resulting in a ratio of 0.42. Among individual stocks, Fujitsu Ltd. emerged as the top performer in the large-cap category, posting a return of 2.27%. Conversely, Rakuten Group, Inc. struggled, recording a decline of 2.71%. In the mid-cap sector, SHIMAMURA Co., Ltd. led with a return of 2.58%, while GMO AD Partners, Inc. faced a significant drop of 10.16%. The small-cap segment saw Oncolys BioPharma, Inc. excel with a remarkable return of 23.9%, while Chugai Mining Co., Ltd. lagged with a decline of 11.75%.