The China Shanghai Composite Index experienced a decline of 1.26% today, marking a 1.37% drop over the past 30 days. This downward trend reflects broader market challenges, with a significant imbalance in stock performance. Across the market, 1,423 stocks advanced while 3,513 declined, resulting in an advance-decline ratio of 0.41. In the large-cap segment, Beijing Enlight Media Co., Ltd. emerged as the top performer with a return of 15.39%, while Broadex Technologies Co., Ltd. faced the steepest decline at -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%. The small-cap sector was notably volatile, with Shenzhen Etmade Automatic Equipment Co., Ltd. achieving a remarkable 20% return, while Cubic Digital Technology Co., Ltd. struggled with a significant loss of 20.09%. The advance-decline ratios for large, mid, and small-cap stocks were 0.19, 0.35, and 0.56, respectively, indicating varying levels of market participation and sentiment across different capitalizations.