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]

从中证香港300能源指数持仓样本的行业来看，燃油炼制占比42.22%、综合性石油与天然气企业占比 32.67%、煤炭占比22.80%、油田服务占比1.58%、焦炭占比0.73%。 资料显示，指数样本每半年调整一次，样本调整实施时间分别为每年6月和12月的第二个星期五的下一 交易日。权重因子随样本定期调整而调整，调整时间与指数样本定期调整实施时间相同。在下一个定期 调整日前，权重因子一般固定不变。遇临时调整时，当中证香港300指数调整样本时，其下属的行业指 数样本随之进行相应调整。在样本公司有特殊事件发生，导致其行业归属发生变更时，将对中证香港 300行业指数系列样本进行相应调整。当样本退市时，将其从指数样本中剔除。样本公司发生收购、合 并、分拆等情形的处理，参照计算与维护细则处理。 本文源自：金融界 金融界8月4日消息，上证指数低开高走，中证香港300能源指数 (H300能源，L11220)报2542.83点。 数据统计显示，中证香港300能源指数近一个月上涨7.18%，近三个月上涨14.57%，年至今上涨2.36%。 据了解，中证香港300行业指数系列在中证香港300指数样本中，按中证行业分类标准进行分类， ...

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].