Group 1 - The Shanghai Composite Index opened high and fluctuated, with the CSI 300 Metals and Mining Index reported at 2405.31 points [1] - The CSI 300 Metals and Mining Index has increased by 2.29% in the past month, 3.98% in the past three months, and 9.43% year-to-date [1] - The CSI 300 Index is categorized into 10 primary industries, 26 secondary industries, over 70 tertiary industries, and more than 100 quaternary industries [1] Group 2 - The top ten holdings in the CSI 300 Metals and Mining Index are Zijin Mining (31.27%), Northern Rare Earth (6.45%), Baosteel (6.2%), Shandong Gold (5.8%), China Aluminum (5.62%), Luoyang Molybdenum (5.48%), Huayou Cobalt (4.91%), Zhongjin Gold (4.35%), Baogang Group (4.22%), and Ganfeng Lithium (3.75%) [1] - The market share of the CSI 300 Metals and Mining Index is 82.35% from the Shanghai Stock Exchange and 17.65% from the Shenzhen Stock Exchange [2] - The industry composition of the CSI 300 Metals and Mining Index includes precious metals (44.94%), industrial metals (21.54%), rare metals (19.00%), steel (11.62%), and other non-metal materials (2.90%) [2] Group 3 - The index samples are adjusted every six months, specifically on the second Friday of June and December, with temporary adjustments made under special circumstances [2] - When a sample is delisted, it is removed from the index, and any corporate actions such as acquisitions, mergers, or splits are handled according to maintenance guidelines [2] - Adjustments to the CSI 300 industry index samples occur in conjunction with changes to the CSI 300 Index samples [2]

金融界4月25日消息，A股三大指数收盘涨跌不一，沪深300金属与采矿指数 (300金属与采矿，L11606) 报2380.65点。 数据统计显示，沪深300金属与采矿指数近一个月下跌4.75%，近三个月上涨3.70%，年至今上涨 7.50%。 据了解，为反映沪深300指数样本中不同细分行业公司证券的整体表现，为投资者提供分析工具，将沪 深300指数300只样本按行业分类标准分为10个一级行业、26个二级行业、70余个三级行业及100多个四 级行业。沪深300细分行业指数系列分别以进入各二级、三级行业的全部证券作为样本编制指数，形成 沪深300细分行业指数。该指数以2004年12月31日为基日，以1000.0点为基点。 从指数持仓来看，沪深300金属与采矿指数十大权重分别为：紫金矿业（31.22%）、北方稀土 （6.24%）、宝钢股份（6.15%）、山东黄金（6.06%）、中国铝业（5.51%）、洛阳钼业（5.35%）、华 友钴业（4.87%）、中金黄金（4.43%）、包钢股份（4.29%）、赣锋锂业（3.72%）。 从沪深300金属与采矿指数持仓的市场板块来看，上海证券交易所占比82.17%、深圳证券交易所占 ...

Core 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]