Jin Rong Jie·2025-05-20 08:06Core Viewpoint - The oil and gas industry index has shown mixed performance, with a recent increase in the short term but a decline year-to-date, indicating potential volatility in the sector [2]. Group 1: Index Performance - The China Securities Oil and Gas Industry Index has increased by 3.53% over the past month, decreased by 1.60% over the past three months, and has declined by 5.61% year-to-date [2]. - The index is designed to reflect the overall performance of listed companies involved in oil and gas exploration, equipment manufacturing, transportation, sales, refining, and primary petrochemical production [2]. Group 2: Index Composition - The top ten weighted companies in the index are: China National Petroleum (10.4%), China National Offshore Oil (9.84%), Sinopec (9.41%), Guanghui Energy (5.08%), and others [2]. - The index is primarily composed of companies listed on the Shanghai Stock Exchange (70.84%) and the Shenzhen Stock Exchange (29.16%) [2]. Group 3: Sector Allocation - The index's holdings are allocated as follows: Energy (61.28%), Materials (20.68%), Industrials (15.13%), Financials (1.82%), and Utilities (1.09%) [2]. Group 4: Index Adjustment - The index samples are adjusted biannually, with changes implemented on the next trading day following the second Friday of June and December [3]. - In special circumstances, the index may undergo temporary adjustments, such as removing companies that are delisted or have undergone mergers or acquisitions [3]. Group 5: Related Funds - Public funds tracking the oil and gas industry include: Guotai China Securities Oil and Gas Industry Link A, Guotai China Securities Oil and Gas Industry Link C, and Guotai China Securities Oil and Gas Industry ETF [3].