Jin Rong Jie·2025-08-01 08:45Group 1 - The core viewpoint of the news is that the China Hong Kong 300 upstream index has shown significant growth over the past month, three months, and year-to-date, indicating a positive trend in the market [1][2] - The China Hong Kong 300 upstream index has increased by 8.11% in the last month, 21.15% in the last three months, and 16.69% year-to-date [1] - The index is composed of securities selected based on the China Securities Industry Classification, reflecting the overall performance of various thematic securities listed on the Hong Kong Stock Exchange [1][2] Group 2 - The top ten holdings of the China Hong Kong 300 upstream index include China National Offshore Oil Corporation (28.21%), PetroChina Company Limited (13.54%), Zijin Mining Group (10.5%), and China Shenhua Energy Company (9.62%) [1] - The index's holdings are entirely composed of securities listed on the Hong Kong Stock Exchange, with the oil and gas sector representing 51.36% of the index [2] - The index undergoes adjustments every six months, with the next adjustment scheduled for the second Friday of June and December, and can also be adjusted under special circumstances [2]