Group 1 - The Shanghai Stock Exchange National New Sci-Tech Board State-Owned Enterprises Index (950253) opened lower and fluctuated, down 0.7% to 1080.78 points, with a trading volume of 26.665 billion yuan [1] - Over the past month, the index has increased by 8.98%, by 9.11% over the past three months, and by 11.89% year-to-date [1] - The index is composed of state-owned enterprises listed on the Sci-Tech Board or companies with state capital participation without actual control, reflecting the overall performance of state-owned enterprises in the Sci-Tech Board [1] Group 2 - The index samples are 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]

Group 1 - The A-share market's three major indices closed mixed, with the Shanghai National New Science and Technology Board State-owned Enterprise Index down 0.22% at 1007.04 points, with a trading volume of 14.651 billion [1] - The Shanghai National New Science and Technology Board State-owned Enterprise Index has increased by 4.62% in the past month, 3.45% in the past three months, and 3.75% 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 (5.86%), Huaron Micro (5.27%), SMIC (5.08%), Haiguang Information (4.9%), Western Superconducting (4.82%), Huahong Semiconductor (4.64%), Zhongwei Company (4.51%), Guodun Quantum (3.48%), Jinghe Integration (3.42%), and Zhongke Xingtu (3.08%) [1] - The index's holdings are entirely from the Shanghai Stock Exchange, with a 100% allocation [1] - The industry composition of the index shows that Information Technology accounts for 54.87%, Industry for 28.66%, Materials for 8.93%, Communication Services for 5.12%, and Healthcare for 2.42% [2] Group 3 - The index samples are adjusted every six months, with adjustments implemented on the next trading day after the second Friday of June and December each year [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 will be processed according to calculation and maintenance guidelines [2]