Group 1 - The Shanghai Composite Index opened lower but rose later, with the Shanghai Energy Industry Layered Equal-Weight Index down by 1.71% to 2502.08 points, with a trading volume of 14.174 billion yuan [1] - The Shanghai Energy Industry Layered Equal-Weight Index has increased by 1.24% in the past month, decreased by 4.91% in the past three months, and has fallen by 10.24% year-to-date [1] - The index includes companies from eleven primary industries, providing diversified investment targets through market capitalization weighting and equal weighting within secondary industries [1] Group 2 - The top ten holdings of the Shanghai Energy Industry Layered Equal-Weight Index include: Continental Oil & Gas (3.64%), China Coal Energy (3.53%), China National Petroleum (3.46%), Sinopec Oilfield Service (3.44%), China Oil Engineering (3.44%), Shaanxi Coal and Chemical Industry (3.44%), CNOOC Engineering (3.39%), CNOOC Development (3.39%), China National Offshore Oil Service (3.38%), and Shanghai Petrochemical (3.37%) [1] - The index's holdings are entirely from the Shanghai Stock Exchange, with coal accounting for 46.42%, oilfield services for 13.60%, coke for 12.94%, fuel refining for 10.31%, integrated oil and gas companies for 6.75%, oil and gas extraction for 3.44%, oil and gas circulation and others for 3.35%, and natural gas processing for 3.19% [2]

Core Points - The China Securities 1000 Energy Index has experienced a decline of 8.54% over the past month, 8.15% over the past three months, and 11.55% year-to-date [2] Group 1: Index Performance - The China Securities 1000 Energy Index is currently reported at 436.46 points [1] - The index is based on a sample of liquid and representative securities from each industry, providing a diversified investment option [2] - The index was established on December 31, 2004, with a base point of 1000.0 [2] Group 2: Index Holdings - The top ten weighted stocks in the China Securities 1000 Energy Index include Donghua Energy (10.57%), New Natural Gas (9.55%), and Continental Oil & Gas (9.04%) [2] - The Shanghai Stock Exchange accounts for 71.66% of the index holdings, while the Shenzhen Stock Exchange accounts for 28.34% [2] - The industry composition of the index holdings includes coal (32.49%), oil refining (22.69%), coke (20.60%), natural gas processing (13.65%), and oil and gas circulation and others (10.57%) [2] Group 3: Sample Adjustment - The index samples are adjusted biannually, with adjustments occurring on the next trading day after the second Friday of June and December [3] - Temporary adjustments may occur under special circumstances, such as delisting or corporate actions like mergers and acquisitions [3] - Changes in industry classification due to special events will also lead to corresponding adjustments in the index samples [3]

Group 1 - The China Securities Index for Hong Kong, Shanghai, and Shenzhen interconnection logistics shows a recent performance with a 1.53% increase over the past month, a 3.20% decrease over the past three months, and a year-to-date decline of 3.20% [1] - The index is based on the comprehensive index samples and the China Securities 500 Index samples, reflecting the overall performance of securities listed in the interconnection range across the three markets [1] - The index's top ten holdings include companies such as Beijing-Shanghai High-Speed Railway (9.37%), SF Holding (6.77%), and COSCO Shipping Holdings (5.95%) [1] Group 2 - The industry composition of the index shows that railway transportation accounts for 18.28%, shipping for 17.98%, and express delivery for 16.64% [2] - The index samples are adjusted biannually, with adjustments occurring on the next trading day after the second Friday of June and December [2] - In case of special circumstances, temporary adjustments to the index samples may occur, including the removal of companies that are delisted or undergo significant corporate changes [2]