Jin Rong Jie·2025-04-18 08:06Core Viewpoint - The China Securities Resource Selection Index has shown a decline in performance over the past month, three months, and year-to-date, indicating a challenging environment for resource-related companies in the A-share market [2]. Group 1: Index Performance - The China Securities Resource Selection Index closed at 2273.45 points, with a decline of 6.22% over the past month, 2.91% over the past three months, and 2.37% year-to-date [1][2]. - The index reflects the overall performance of listed companies in the energy and materials sectors, with a base date of December 31, 2004, set at 1000.0 points [2]. Group 2: Index Composition - The top ten weighted companies in the index include Zijin Mining (8.09%), China Shenhua (3.57%), Wanhua Chemical (2.85%), China Petroleum (2.5%), and China Petrochemical (2.3%) [2]. - The index's holdings are primarily listed on the Shanghai Stock Exchange (67.70%) and the Shenzhen Stock Exchange (32.30%) [2]. Group 3: Sector Allocation - The sector allocation of the index shows that non-ferrous metals account for 37.26%, chemicals for 26.79%, energy for 21.79%, steel for 7.21%, non-metallic materials for 5.70%, and paper and packaging for 1.25% [2]. Group 4: Index Adjustment Mechanism - The index samples are adjusted semi-annually, with adjustments occurring on the next trading day after the second Friday of June and December [3]. - Weight factors are generally fixed until the next scheduled adjustment, with special circumstances allowing for temporary adjustments [3].