中证油气产业指数下跌1.41%，前十大权重包含洲际油气等

Core Viewpoint - The China Oil and Gas Industry Index has shown fluctuations, with a recent decline of 1.41%, reflecting the overall performance of listed companies in the oil and gas sector [1][2]. Group 1: Index Performance - The China Oil and Gas Industry Index closed at 1804.41 points with a trading volume of 20.451 billion yuan [1]. - Over the past month, the index has increased by 4.76%, while it has risen by 2.10% over the last three months. Year-to-date, it has decreased by 1.12% [1]. Group 2: Index Composition - The index includes companies involved in oil and gas exploration, equipment manufacturing, transportation, sales, refining, and primary petrochemical production [1]. - The top ten weighted companies in the index are: China National Petroleum (10.35%), China National Offshore Oil (9.82%), Sinopec (9.79%), Guanghui Energy (6.14%), and others [1]. - The index is primarily composed of companies listed on the Shanghai Stock Exchange (75.99%) and the Shenzhen Stock Exchange (24.01%) [1]. Group 3: Sector Allocation - The sector allocation of the index shows that energy constitutes 65.60%, materials 15.64%, industrials 15.15%, utilities 1.77%, consumer discretionary 1.04%, and financials 0.80% [2]. - The index samples are adjusted biannually, with changes implemented on the next trading day following the second Friday of June and December [2].