The China Shanghai Composite Index experienced a decline of 1.26% today, reflecting a broader trend with a 1.37% drop over the past 30 days. This downturn is indicative of a challenging market environment, as evidenced by the advance-decline ratios across various market capitalizations. Overall, 1,422 stocks advanced while 3,513 declined, resulting in a market-wide ratio of 0.4. In the large-cap segment, Beijing Enlight Media Co., Ltd. stood out as the top performer with a return of 15.39%, while Broadex Technologies Co., Ltd. lagged behind with a decline of 11.24%. Mid-cap stocks saw Shenyang Fortune Precision Equipment Co., Ltd. leading with an 11.11% return, contrasted by Tongding Interconnection Information Co., Ltd., which fell by 10.01%. Small-cap stocks were particularly volatile, with Shenzhen Etmade Automatic Equipment Co., Ltd. achieving a notable 20% gain, while Cubic Digital Technology Co., Ltd. faced a significant loss of 20.09%. The advance-decline ratio for small caps was 0.56, indicating a higher level of decline relative to advances in this segment.