The Japanese stock market experienced a notable downturn today, with the Nikkei 225 index declining by 2.47%. Over the past five days, the index has seen a decrease of 0.91%, although it has managed to gain 3.0% over the last month. In terms of market performance, the advance-decline ratio indicates a strong preference for advancing stocks, with 2,583 stocks moving upward compared to 875 declining, resulting in a ratio of 2.95x. Large-cap stocks showed a similar trend, with 145 advancing against 30 declining, yielding a ratio of 4.83x. Mid-cap stocks also performed well, with 210 advancing and 56 declining, resulting in a ratio of 3.75x. Small-cap stocks had 1,310 advancing and 366 declining, giving a ratio of 3.58x. Among the top performers, Otsuka Holdings Co., Ltd. led large-cap stocks with a return of 8.72%, while Advantest Corp. lagged with a decline of 9.95%. In the mid-cap sector, Dentsu Soken, Inc. rose by 10.82%, while Mitsui Mining & Smelting Co., Ltd. fell by 11.38%. Small-cap stocks saw Liberta Co., Ltd. gain 23.2%, while Technoflex Corp. dropped by 15.4%.