Group 1 - The core viewpoint of the article highlights the performance of the China Securities Hong Kong 300 Energy Index, which has shown significant increases over various time frames, including a 5.62% rise in the past month, a 12.34% rise in the past three months, and a 6.61% rise year-to-date [1] - The China Securities Hong Kong 300 Industry Index series is designed to reflect the overall performance of different industries in the Hong Kong market, with the index based on a sample of all securities classified according to the China Securities industry classification standards [1] - The China Securities Hong Kong 300 Energy Index is fully composed of stocks listed on the Hong Kong Stock Exchange, with specific sector allocations including 41.25% in fuel refining, 32.54% in integrated oil and gas companies, 23.92% in coal, 1.57% in oilfield services, and 0.72% in coke [1] Group 2 - The index sample is adjusted biannually, with changes 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 underlying index samples [2] - Special events affecting sample companies, such as delistings or mergers, will lead to corresponding adjustments in the China Securities Hong Kong 300 Industry Index series [2]

Group 1 - The core viewpoint of the news is the performance of the China Securities Hong Kong 300 Energy Index, which has shown significant growth over various time frames [1] - The China Securities Hong Kong 300 Energy Index reported a value of 2553.32 points, with a 5.35% increase over the past month, a 14.77% increase over the past three months, and a 2.79% increase year-to-date [1] - The index is designed to reflect the overall performance of different industries in the Hong Kong market, with a base date of December 31, 2004, and a base point of 1000.0 [1] Group 2 - The index is composed entirely of securities listed on the Hong Kong Stock Exchange, with a 100% allocation [1] - The industry composition of the index includes 41.82% in fuel refining, 32.34% in integrated oil and gas companies, 23.52% in coal, 1.57% in oilfield services, and 0.74% in coke [1] - The index samples are adjusted biannually, with adjustments occurring on the next trading day after the second Friday of June and December [2]

Group 1 - The core viewpoint of the news is the performance of the China Securities Hong Kong 300 Energy Index, which has shown significant growth over the past month, three months, and year-to-date [1] - The China Securities Hong Kong 300 Energy Index reported a value of 2542.83 points, with a monthly increase of 7.18%, a three-month increase of 14.57%, and a year-to-date increase of 2.36% [1] - The index is designed to reflect the overall performance of different industries in the Hong Kong market, with a base date of December 31, 2004, and a base point of 1000.0 [1] Group 2 - The index is composed entirely of securities listed on the Hong Kong Stock Exchange, with a 100% allocation [1] - The sector composition of the index includes fuel refining at 42.22%, integrated oil and gas companies at 32.67%, coal at 22.80%, oilfield services at 1.58%, and coke at 0.73% [1] - 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 Hong Kong 300 Energy Index has shown significant growth, with a 8.00% increase over the past month, 15.98% over the past three months, and a 3.91% increase year-to-date [1]. Group 1: Index Performance - The China Securities Index Hong Kong 300 Energy Index is currently at 2581.38 points [1]. - The index reflects the overall performance of different industries in the Hong Kong market, categorized according to the China Securities Industry Classification Standard [1]. Group 2: Index Composition - The index is composed entirely of securities listed on the Hong Kong Stock Exchange, with a 100.00% allocation [1]. - The sector breakdown of the index includes: - Oil refining at 41.93% - Integrated oil and gas companies at 32.52% - Coal at 23.28% - Oilfield services at 1.56% - Coking at 0.72% [1]. Group 3: Sample Adjustment - The index samples are adjusted biannually, specifically 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 temporary adjustments made in response to changes in the underlying index [2].