CHINA COAL ENERGY(601898) 搜狐财经·2025-05-08 12:43Core Viewpoint - The Shanghai Composite Index opened lower but rose throughout the day, while the CSI 300 Energy Index experienced a slight decline of 0.31%, closing at 2091.25 points with a trading volume of 3.741 billion yuan [1] Group 1: Index Performance - The CSI 300 Energy Index has increased by 5.18% over the past month, decreased by 5.26% over the last three months, and has fallen by 13.60% year-to-date [1] - The CSI 300 Industry Index series categorizes 300 sample stocks into 11 primary industries, 35 secondary industries, over 90 tertiary industries, and more than 200 quaternary industries, providing analytical tools for investors [1] Group 2: Index Composition - The top ten weighted stocks in the CSI 300 Energy Index are: China Shenhua (24.96%), China Petroleum (17.91%), China Petrochemical (16.29%), Shaanxi Coal and Chemical Industry (14.81%), China National Offshore Oil Corporation (10.27%), Yanzhou Coal Mining (4.37%), China Coal Energy (3.64%), Shanxi Coking Coal (3.59%), Lu'an Environmental Energy (2.59%), and CNOOC Services (1.56%) [1] - In terms of industry composition, coal accounts for 50.37%, integrated oil and gas companies for 34.20%, fuel refining for 10.27%, coke for 3.59%, and oilfield services for 1.56% within the index [2] Group 3: Sample Adjustment - The index samples are 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, but can be modified in the event of temporary adjustments due to changes in the CSI 300 Index samples or special events affecting a sample company's industry classification [2]