Core Viewpoint - The Shanghai Composite Index opened lower and the CSI 300 Utilities Index reported a value of 2654.37 points, reflecting a mixed performance in the utilities sector [1] Group 1: Index Performance - The CSI 300 Utilities Index has increased by 0.44% over the past month and by 7.20% over the past three months, but has decreased by 1.93% year-to-date [1] - The index is designed to reflect the overall performance of different industry companies within the CSI 300 Index, categorized into 11 primary industries, 35 secondary industries, and over 200 tertiary and quaternary industries [1] Group 2: Index Composition - The top ten weighted stocks in the CSI 300 Utilities Index are: - Changjiang Electric (48.96%) - China Nuclear Power (10.13%) - Three Gorges Energy (8.04%) - Guodian Power (5.47%) - State Power Investment (4.79%) - Huaneng International (4.21%) - Chuanwei Energy (4.2%) - China General Nuclear Power (3.76%) - Zhejiang Energy (2.85%) - Huadian International (2.61%) [1] - The market composition of the CSI 300 Utilities Index shows that the Shanghai Stock Exchange accounts for 95.91% and the Shenzhen Stock Exchange accounts for 4.09% [2] Group 3: Industry Breakdown - The industry composition of the CSI 300 Utilities Index is as follows: - Hydropower: 60.25% - Thermal Power: 15.15% - Nuclear Power: 13.90% - Wind Power: 8.37% - Gas: 2.34% [2] Group 4: Sample Adjustment - The index samples are adjusted biannually, with adjustments occurring on the next trading day after the second Friday of June and December each year [2] - Weight factors are adjusted in accordance with sample changes, and temporary adjustments occur when the CSI 300 Index samples are modified [2]

据了解，为反映沪深300指数样本中不同行业公司证券的整体表现，为投资者提供分析工具，将沪深300 指数300只样本按行业分类标准分为11个一级行业、35个二级行业、90余个三级行业及200余个四级行 业。沪深300行业指数系列分别以进入各一级、二级、三级、四级行业的全部证券作为样本编制指数， 形成沪深300行业指数。该指数以2004年12月31日为基日，以1000.0点为基点。 从指数持仓来看，沪深300公用事业(二级行业)指数十大权重分别为：长江电力（48.15%）、中国核电 （10.39%）、三峡能源（8.2%）、国电电力（5.46%）、国投电力（4.72%）、川投能源（4.36%）、华 能国际（4.2%）、中国广核（3.8%）、浙能电力（3.06%）、华电国际（2.62%）。 金融界4月24日消息，A股三大指数收盘涨跌不一，沪深300公用事业(二级行业)指数 (300公用(二级)， L11525)报2610.44点。 数据统计显示，沪深300公用事业(二级行业)指数近一个月上涨3.88%，近三个月上涨2.74%，年至今下 跌3.55%。 从沪深300公用事业(二级行业)指数持仓样本的行业来看，水电占比5 ...