Group 1 - The China Securities Index series includes the CSI 500, CSI Hong Kong-Shanghai-Shenzhen Small Comprehensive Index, and CSI Hong Kong-Shanghai-Shenzhen Comprehensive Index, categorized into 11 industries to reflect the overall performance of different industry securities [1][2] - The CSI Hong Kong-Shanghai-Shenzhen Small Comprehensive Energy Index has shown a 2.88% increase over the past month, a 7.73% increase over the past three months, and a 6.22% decrease year-to-date [1] - The top ten holdings in the CSI Hong Kong-Shanghai-Shenzhen Small Comprehensive Energy Index include China Coal Energy (11.12%), Jereh Oilfield Services (6.61%), Meijin Energy (4.44%), and others [1] Group 2 - The market share of the CSI Hong Kong-Shanghai-Shenzhen Small Comprehensive Energy Index is distributed as follows: Shanghai Stock Exchange 52.20%, Shenzhen Stock Exchange 24.29%, and Hong Kong Stock Exchange 23.51% [2] - The industry composition of the index shows that coal accounts for 37.32%, coke for 18.96%, fuel refining for 12.62%, oil and gas extraction for 12.35%, and oilfield services for 9.14% [2] - The index samples are adjusted biannually, with adjustments occurring on the next trading day after the second Friday of June and December [2]

Core Viewpoint - The China Securities Index for small and medium-sized comprehensive energy shows a decline in performance over various time frames, indicating potential challenges in the energy sector [1][2]. Group 1: Index Performance - The China Securities Index for small and medium-sized comprehensive energy closed at 1901.11 points, with a decline of 6.73% over the past month, 6.43% over the past three months, and 10.19% year-to-date [1]. - The index is categorized into 11 industries based on the classification standards of the China Securities Index series, reflecting the overall performance of different industry securities [1]. Group 2: Index Holdings - The top ten holdings in the index include companies such as China Coal Energy (8.65%), Yongtai Energy (8.55%), and Jereh Oilfield Services (5.15%) [1]. - The index's market composition shows that the Shanghai Stock Exchange accounts for 54.91%, the Shenzhen Stock Exchange for 22.93%, and the Hong Kong Stock Exchange for 22.16% [2]. Group 3: Industry Composition - The index's industry composition reveals that coal accounts for 31.95%, coke for 26.40%, and oil refining for 13.43% [2]. - Other significant sectors include oil and gas extraction (10.52%), oilfield services (7.66%), and oil and gas circulation (5.27%) [2]. Group 4: Sample Adjustment - The index samples are adjusted biannually, with changes implemented on the next trading day following the second Friday of June and December [2]. - Adjustments to the weight factors occur simultaneously with sample changes, and special circumstances may lead to temporary adjustments [2].