Sou Hu Cai Jing·2025-07-23 15:50Group 1 - The A-share market's three major indices closed mixed, with the Shanghai National New Science and Technology Board State-owned Enterprise Index rising by 1.03% to 1049.47 points, with a trading volume of 26.231 billion yuan [1] - The Shanghai National New Science and Technology Board State-owned Enterprise Index has increased by 8.21% in the past month, 6.55% in the past three months, and 6.78% year-to-date [1] - This index reflects the overall performance of state-owned enterprises listed on the Science and Technology Innovation Board, selected from state-owned enterprises or those with state capital participation without actual controllers [1] Group 2 - The top ten weighted stocks in the index include Huahai Qingke (5.73%), Huarun Micro (5.14%), SMIC (4.95%), Zhongwei Company (4.77%), Western Superconducting (4.71%), Haiguang Information (4.65%), Huahong Company (4.48%), Jinghe Integration (3.62%), Guodun Quantum (3.36%), and Zhongke Star Map (2.93%) [1] - The index's holdings are entirely from the Shanghai Stock Exchange, with a 100% allocation [1] - The industry composition of the index includes Information Technology (54.14%), Industry (29.67%), Materials (8.81%), Communication Services (4.93%), and Healthcare (2.45%) [2] Group 3 - The index samples are adjusted semi-annually, with adjustments implemented on the next trading day following the second Friday of June and December each year [2] - Weight factors are generally fixed until the next scheduled adjustment, with special circumstances allowing for temporary adjustments [2] - Companies that are delisted or undergo mergers, acquisitions, or splits will be handled according to calculation and maintenance guidelines [2]