Group 1 - The A-share index closed mixed, with the Shanghai A-share index down by 0.13% at 3661.33 points, with a trading volume of 595.285 billion [1] - Over the past month, the Shanghai A-share index has increased by 3.32%, by 11.20% over the past three months, and by 4.34% year-to-date [1] - The index is composed of eligible A-shares listed on the Shanghai Stock Exchange, reflecting the overall performance of A-share prices in the Shanghai market [1] Group 2 - The top ten weighted stocks in the Shanghai A-share index include Industrial and Commercial Bank of China (3.81%), Agricultural Bank of China (3.56%), Kweichow Moutai (3.24%), China Petroleum (2.53%), and others [1] - The financial sector accounts for 28.18% of the index, followed by industrials at 18.36%, information technology at 10.73%, and materials at 8.19% [2] - The index includes stocks that have ranked in the top 10 by average total market capitalization in the Shanghai market after three months of listing, while other stocks are included after one year [2]