Jin Rong Jie·2025-04-24 07:39Group 1 - The A-share market's three major indices closed mixed, with the CSI 300 Utilities (secondary industry) index at 2610.44 points [1] - The CSI 300 Utilities index has increased by 3.88% over the past month, 2.74% over the past three months, and has decreased by 3.55% year-to-date [1] - The CSI 300 index categorizes its 300 sample stocks into 11 primary industries, 35 secondary industries, over 90 tertiary industries, and more than 200 quaternary industries [1] Group 2 - The top ten weights in the CSI 300 Utilities index are: Changjiang Electric Power (48.15%), China Nuclear Power (10.39%), Three Gorges Energy (8.2%), Guodian Power (5.46%), State Power Investment (4.72%), Chuanwei Energy (4.36%), Huaneng International (4.2%), China General Nuclear Power (3.8%), Zhejiang Energy (3.06%), and Huadian International (2.62%) [1] - The market share of the CSI 300 Utilities index is 95.84% from the Shanghai Stock Exchange and 4.16% from the Shenzhen Stock Exchange [2] - The industry composition of the CSI 300 Utilities index includes hydropower (59.47%), thermal power (15.34%), nuclear power (14.19%), wind power (8.56%), and gas (2.43%) [2] 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 each year [2] - Weight factors are generally fixed until the next scheduled adjustment, with temporary adjustments made when the CSI 300 index samples are modified [2] - Special events affecting sample companies may lead to changes in industry classification, and companies that are delisted will be removed from the index sample [2]