Zheng Quan Shi Bao·2025-08-28 11:55Market Overview - The A-share market experienced an overall increase on August 28, with the Shanghai Composite Index closing at 3843.6 points, up 1.14%, the Shenzhen Component Index at 12571.37 points, up 2.25%, and the ChiNext Index at 2827.17 points, up 3.82% [2] - The total trading volume for both markets was 29,708.03 billion yuan, a decrease of 1,947.62 billion yuan compared to the previous trading day [2] Fund Flow Analysis - The main funds in the two markets saw a net outflow of nearly 39 billion yuan, with an opening net outflow of 17.45 billion yuan and a tail-end net inflow of 8.84 billion yuan [2][3] - The net outflow for the ChiNext was over 20.5 billion yuan, while the CSI 300 index saw a net outflow of 4.12 billion yuan [3][4] Sector Performance - The electronics sector achieved a net inflow of 29.035 billion yuan, with a growth of 3.27%, driven by stocks like Shenghong Technology [5] - The communication sector also saw a net inflow of 5.69 billion yuan, increasing by 3.06%, led by ZTE Corporation [5] - Conversely, the biopharmaceutical sector experienced a significant net outflow of 14.55 billion yuan, declining by 0.50%, with stocks like Tibet Pharmaceutical facing heavy selling [5] Institutional Trading - Notable institutional buying included stocks like Yingweike, which rose by 10.01% with a net purchase of 67.1 million yuan, and International Composite Materials, which increased by 19.97% with a net purchase of 65.5 million yuan [8] - In contrast, major selling was observed in stocks like SMIC, which saw a 17.45% increase but faced a net sell-off of 1,135.25 million yuan by institutions [8][9]