Zheng Quan Shi Bao Wang·2025-10-28 10:24Market Overview - The Shanghai Composite Index closed at 3988.22 points, down 0.22%, with a trading volume of 940.8 billion yuan. The Shenzhen Component Index fell 0.44% to 13430.10 points, with a trading volume of 1207.1 billion yuan. The ChiNext Index decreased by 0.15% to 3229.58 points, with a trading volume of 573.27 billion yuan. The STAR Market 50 Index dropped 0.84% to 1471.73 points, with a trading volume of 87.8 billion yuan. The total trading volume for both markets was 2147.9 billion yuan, a decrease of 192.23 billion yuan from the previous trading day [1]. Sector Performance - Among industry sectors, defense and military, transportation, textiles and apparel, communications, and environmental protection showed the highest gains. In contrast, sectors such as non-ferrous metals, beauty care, steel, construction decoration, coal, pharmaceutical biology, securities, and oil and petrochemicals experienced significant declines [3]. - The fluorochemical and PCB concepts were particularly strong, with ST Zhongdi achieving an 8-day consecutive limit-up [2][4]. Individual Stock Performance - A total of 2284 stocks rose while 2714 stocks fell, with 156 stocks remaining flat and 10 stocks suspended. Excluding newly listed stocks, there were 71 stocks that hit the daily limit-up and 11 that hit the limit-down [3]. - The top net inflow stocks included Sanhua Intelligent Control with a net inflow of 1.098 billion yuan, followed by Duofluor and Heyuan Biological with inflows of 955.6 million yuan and 825 million yuan, respectively [10][11]. Fund Flow Analysis - The net outflow of main funds from the Shanghai and Shenzhen markets was 34.079 billion yuan, with the ChiNext experiencing a net outflow of 11.392 billion yuan and the CSI 300 seeing a net outflow of 10.192 billion yuan. The electronic sector had the largest net outflow of 10.889 billion yuan [5]. - Five sectors saw net inflows, with the defense and military sector leading with a net inflow of 999.3 million yuan [5]. Institutional Activity - Institutional investors had a net buy of approximately 370 million yuan, with Hengbao Co. being the most purchased stock at a net buy of about 193 million yuan. The most sold stock was Zhongtung High-tech, with a net sell of approximately 105 million yuan [17][19].