Jin Rong Jie·2025-04-24 07:39Core Points - The A-share market's three major indices closed mixed, with the CSI 300 Metals and Mining Index at 2390.84 points [1] - The CSI 300 Metals and Mining Index has decreased by 2.48% over the past month, increased by 5.41% over the past three months, and risen by 7.96% year-to-date [1] - The CSI 300 Index categorizes its 300 sample stocks into 10 primary industries, 26 secondary industries, over 70 tertiary industries, and more than 100 quaternary industries [1] Industry Composition - The CSI 300 Metals and Mining Index has a weight distribution of 82.43% from the Shanghai Stock Exchange and 17.57% from the Shenzhen Stock Exchange [2] - The industry composition of the index includes precious metals at 45.45%, industrial metals at 21.32%, rare metals at 18.45%, steel at 11.70%, and other non-metal materials at 3.08% [2] Index Adjustments - The index samples are adjusted semi-annually, specifically on the second Friday of June and December, with temporary adjustments made under special circumstances [2] - When a sample stock is delisted, it is removed from the index, and any corporate actions such as mergers or splits are handled according to maintenance guidelines [2] - Adjustments to the CSI 300 industry index samples occur in tandem with changes to the CSI 300 Index samples [2]