从中证香港300上游指数持仓样本的行业来看，石油与天然气占比51.36%、煤炭占比15.88%、工业金属 占比15.22%、贵金属占比15.08%、油气开采与油田服务占比1.05%、稀有金属占比0.88%、其他有色金 属及合金占比0.51%。 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。特殊情况下将对指数进行临时调整。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 作者：行情君 数据统计显示，中证香港300上游指数近一个月上涨8.11%，近三个月上涨21.15%，年至今上涨 16.69%。 据了解，中证香港300主题指数系列从中证香港300指数样本中根据中证行业分类选取符合相应主题的证 券作为指数样本，反映了在香港交易所上市各主题证券的整体表现。该指数以2004年12月31日为基日， 以1000.0点为基点。 从指数持仓来看，中证香港300上游指数十大权重分别为：中国海洋石油（28.21%）、中国石油股份 （13.54%）、紫金矿业（10.5%）、中国神华（9.62%）、中国石 ...

Group 1 - The core index, the China Securities Hong Kong 300 Upstream Index (H300 Upstream), reported a value of 2572.51 points, with a 2.22% increase over the past month, a 25.04% increase over the past three months, and a 9.20% increase year-to-date [1] - The index reflects the overall performance of theme securities listed on the Hong Kong Stock Exchange, selected based on the China Securities industry classification [1] - The top ten holdings of the H300 Upstream Index include China National Offshore Oil Corporation (28.81%), PetroChina Company Limited (12.85%), Zijin Mining Group (10.9%), China Shenhua Energy Company (9.29%), Sinopec Limited (8.93%), China Hongqiao Group (4.48%), China Coal Energy Company (3.4%), Zhaojin Mining Industry Company (3.06%), Luoyang Molybdenum Company (2.89%), and Yanzhou Coal Mining Company (2.35%) [1] Group 2 - The industry composition of the H300 Upstream Index shows that oil and gas account for 50.95%, precious metals for 16.02%, coal for 15.56%, industrial metals for 14.84%, oil and gas extraction and field services for 1.07%, rare metals for 0.89%, and other non-ferrous metals and alloys for 0.67% [2] - The index samples are adjusted semi-annually, with adjustments implemented on the next trading day following the second Friday of June and December each year, with provisions for temporary adjustments in special circumstances [2]

Group 1 - The core viewpoint of the article highlights the performance of the CSI Hong Kong 300 upstream index, which has seen an increase of 8.15% over the past month but a decline of 2.93% over the last three months and a year-to-date decrease of 2.65% [2] - The CSI Hong Kong 300 upstream index is composed of securities selected from the CSI Hong Kong 300 index based on industry classification, reflecting the overall performance of various thematic securities listed on the Hong Kong Stock Exchange [2][3] - The top ten holdings of the CSI Hong Kong 300 upstream index include China National Offshore Oil Corporation (29.31%), PetroChina Company Limited (12.47%), Zijin Mining Group (10.38%), China Shenhua Energy Company (10.05%), and Sinopec Limited (9.52%) [2] Group 2 - The market sectors represented in the CSI Hong Kong 300 upstream index are entirely from the Hong Kong Stock Exchange, with the oil and gas sector accounting for 51.69%, coal at 18.07%, precious metals at 15.59%, industrial metals at 9.95%, and rare metals at 3.15% [3] - The index samples are adjusted semi-annually, with adjustments implemented on the next trading day following the second Friday of June and December each year, and can also be adjusted temporarily under special circumstances [3]