Group 1 - The China Securities Index for the Hong Kong-Shanghai-Shenzhen 500 Energy Index closed at 2024.62 points, with a decline of 3.20% over the past month, 8.92% over the past three months, and 12.35% year-to-date [1] - The index is composed of 11 industry categories, reflecting the overall performance of different industry securities within the index series [1] - The top ten weighted stocks in the index include China National Offshore Oil Corporation (15.64%), China Shenhua Energy (12.01%), and China Petroleum & Chemical Corporation (8.40%) [1] Group 2 - The industry composition of the index shows that coal accounts for 37.51%, integrated oil and gas companies for 34.93%, and fuel refining for 20.53% [2] - The index samples are adjusted biannually, with adjustments occurring on the next trading day after the second Friday of June and December [2] - Special circumstances may lead to temporary adjustments to the index samples, such as delisting or corporate actions like mergers and acquisitions [2]

Core Points - The Shanghai Composite Index decreased by 0.46%, while the CSI Hong Kong-Shanghai-Shenzhen 500 Energy Index reported at 2107.05 points [1] - The CSI Hong Kong-Shanghai-Shenzhen 500 Energy Index has increased by 2.88% over the past month, decreased by 7.24% over the past three months, and has declined by 8.78% year-to-date [1] Index Composition - The top ten holdings of the CSI Hong Kong-Shanghai-Shenzhen 500 Energy Index include: CNOOC (16.54%), China Shenhua (11.31%), PetroChina (11.0%), China Shenhua (8.99%), Sinopec (8.51%), PetroChina (8.3%), Sinopec (7.63%), Shaanxi Coal and Chemical Industry (6.99%), CNOOC (4.89%), and Guanghui Energy (2.56%) [1] - The market share of the index holdings is as follows: Shanghai Stock Exchange 49.67%, Hong Kong Stock Exchange 48.52%, and Shenzhen Stock Exchange 1.81% [1] Industry Breakdown - The industry composition of the CSI Hong Kong-Shanghai-Shenzhen 500 Energy Index is as follows: Coal 35.97%, Integrated Oil and Gas Companies 35.45%, Oil Refining 21.43%, Coke 3.10%, Oil and Gas Distribution and Others 2.56%, Oilfield Services 1.48% [2] - The index sample is adjusted biannually, with adjustments occurring 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 special circumstances allowing for temporary adjustments [2]