Sou Hu Cai Jing·2025-07-16 13:53Group 1 - The Shanghai Stock Exchange National New Sci-Tech Board State-Owned Enterprise Index (950253) opened lower and fluctuated, down 0.2% to 1005.02 points, with a trading volume of 13.477 billion [1] - The index has increased by 4.39% in the past month, 3.81% in the past three months, and 3.52% year-to-date [1] - The index reflects the overall performance of state-owned enterprises listed on the Sci-Tech Board, selected from state-owned companies or those with state capital participation without actual control [1] Group 2 - The top ten weightings in the index are: Huahai Qingke (5.82%), Huaron Micro (5.27%), SMIC (5.04%), Haiguang Information (4.94%), Western Superconducting (4.83%), Huahong Semiconductor (4.59%), Zhongwei Company (4.48%), Guodun Quantum (3.53%), Jinghe Integrated (3.43%), and Zhongke Star Map (3.06%) [1] - The index's holdings are entirely from the Shanghai Stock Exchange, with a sector breakdown of 54.74% in Information Technology, 28.72% in Industry, 8.98% in Materials, 5.15% in Communication Services, and 2.41% in Healthcare [1] Group 3 - The index sample is adjusted every six months, with adjustments implemented on the next trading day after the second Friday of June and December [2] - Weight factors are generally fixed until the next scheduled adjustment, with temporary adjustments made under special circumstances [2] - Companies that are delisted or undergo mergers, acquisitions, or splits are processed according to calculation and maintenance guidelines [2]