Jin Rong Jie·2025-08-19 08:06Group 1 - The Shanghai Composite Index opened high and fluctuated, with the CSI 300 Power Index reported at 2572.78 points [1] - The CSI 300 Power Index has decreased by 3.70% in the past month, 5.87% in the past three months, and 6.77% year-to-date [1] - The CSI 300 Index is categorized 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 Power Index are: Changjiang Electric (48.32%), China Nuclear Power (10.65%), Three Gorges Energy (8.79%), Guodian Power (5.75%), State Power Investment (5.02%), Huaneng International (4.56%), Chuanwei Energy (4.27%), China General Nuclear Power (4.15%), Zhejiang Energy (2.98%), and Huadian International (2.79%) [1] - The market segment of the CSI 300 Power Index is dominated by the Shanghai Stock Exchange at 95.49%, while the Shenzhen Stock Exchange accounts for 4.51% [1] Group 3 - In terms of industry composition within the CSI 300 Power Index, hydropower accounts for 59.96%, thermal power for 16.09%, nuclear power for 14.80%, and wind power for 9.15% [2] - The index sample is adjusted biannually, 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 temporary adjustments made in response to changes in the CSI 300 Index [2]