一周市场回顾（2025.08.18—2025.08.22）

Market Performance - The Shanghai Composite Index increased by 1.70%, closing at 3696.77 points, while the Shenzhen Component Index rose by 4.55% to 11634.67 points, and the ChiNext Index surged by 8.58% to 2534.22 points[4] - The average daily trading volume of A-shares was 25,875 billion CNY, up 23.10% from the previous week[10] Sector Performance - The top-performing sectors this week included Communication (10.84%), Electronics (8.95%), and Comprehensive (8.25%) industries[13] - The value style indices, such as the SSE 50, CSI 100, and CSI 300, rose by 1.57%, 2.16%, and 2.37% respectively, while growth style indices like the CSI 1000 and CSI 500 increased by 4.09% and 3.88% respectively[5] Margin Trading - As of August 22, the total margin trading balance reached 21,550.68 billion CNY, an increase of 4.48% from the previous week, accounting for 2.32% of the A-share market capitalization, up 0.68%[17] - The total margin trading transaction volume was 14,450.72 billion CNY, reflecting a 29.32% increase, and constituted 11.17% of the A-share trading volume, up 5.05%[16] Industry Insights - The top five industries with increased margin trading balances were Electronics (27.19 billion CNY), Pharmaceuticals (14.87 billion CNY), and Communication (11.80 billion CNY) while the sectors with decreased balances included Mining (-0.47 billion CNY) and Building Materials (-0.16 billion CNY)[22] - The net buying amounts for margin trading were highest in Electronics (17.32 billion CNY) and Computers (11.23 billion CNY), while the largest net selling amounts were in Building Materials (-0.098 billion CNY) and Mining (-0.069 billion CNY)[26]