The Japanese stock market experienced a downturn today, with the Nikkei 225 index declining by 0.97%. Over the past five days, the index has seen a more significant drop of 3.88%, although it remains up by 4.0% over the last 30 days. In terms of market performance, the advance-decline ratio indicates a challenging environment, with 1,171 stocks advancing compared to 2,414 declining, resulting in an overall ratio of 0.49. This trend is mirrored in the large-cap sector, where 57 stocks advanced against 117 that declined. Mid-cap stocks fared worse, with only 72 advancing versus 194 declining, yielding a ratio of 0.37. Small-cap stocks showed a similar pattern, with 531 advancing and 1,195 declining, resulting in a ratio of 0.44. Among the notable performers, Terumo Corp. led the large-cap segment with a return of 18.57%, while Japan Post Insurance Co., Ltd. lagged with a decline of 11.2%. In the mid-cap category, GMO Payment Gateway, Inc. achieved a return of 20.62%, while Marui Group Co., Ltd. fell by 8.53%. The small-cap sector saw Kanto Denka Kogyo Co., Ltd. rise by 24.39%, while Writeup Co., Ltd. faced a significant drop of 25.04%.