The Japanese stock market experienced a notable downturn today, with the Nikkei 225 index declining by 3.55%. Over the past five days, the index has seen a decrease of 1.78%, although it remains up by 10.18% over the last 30 days, indicating some volatility in the market. In terms of performance across market capitalizations, large-cap stocks faced challenges, with Fujikura Ltd. emerging as the top performer, gaining 5.29%. Conversely, Murata Manufacturing Co. Ltd. struggled, posting a loss of 10.16%. Mid-cap stocks also showed mixed results, with Air Water, Inc. leading with a return of 6.61%, while Furukawa Electric Co., Ltd. fell significantly by 15.52%. Small-cap stocks had a standout performer in TESS Holdings Co., Ltd., which surged by 14.42%, while Enechange Ltd. faced a decline of 13.16%. The overall advance-decline ratio across the market reflected a challenging environment, with 970 stocks advancing compared to 2,509 declining, resulting in a ratio of 0.39. Large-cap stocks had a particularly tough day, with only 39 advancing against 136 declining, while mid-cap and small-cap stocks also faced more decliners than advancers.