Core Viewpoint - The China Securities New Materials Theme Index has shown a slight increase of 0.11% recently, but has experienced declines over the past month, three months, and year-to-date, indicating a challenging market environment for the new materials sector [1][2]. Group 1: Index Performance - The China Securities New Materials Theme Index closed at 2804.76 points with a trading volume of 18.599 billion yuan [1]. - Over the past month, the index has decreased by 0.38%, by 9.16% over the last three months, and by 5.65% year-to-date [1]. Group 2: Index Composition - The index comprises 50 listed companies involved in advanced steel, non-ferrous metals, chemicals, inorganic non-metals, and other strategic materials [1]. - The top ten weighted companies in the index are: CATL (10.54%), North Huachuang (10.05%), Wanhua Chemical (7.57%), Longi Green Energy (6.46%), Huayou Cobalt (3.38%), Tongwei Co. (3.25%), Sanan Optoelectronics (3.15%), Baofeng Energy (2.63%), and Greeenme (2.32%) [1]. Group 3: Market Segmentation - The index's holdings are primarily listed on the Shenzhen Stock Exchange (54.94%), followed by the Shanghai Stock Exchange (44.50%) and the Beijing Stock Exchange (0.56%) [1]. - In terms of industry distribution, industrials account for 43.27%, materials for 32.99%, and information technology for 23.74% [2]. Group 4: Index Adjustment and Fund Tracking - The index samples are adjusted biannually, with changes implemented on the next trading day following the second Friday of June and December [2]. - Public funds tracking the new materials index include various ETFs such as Hua Bao CSI New Materials ETF and Tianhong CSI New Materials ETF [2].

从中证新材料主题指数持仓的市场板块来看，深圳证券交易所占比54.67%、上海证券交易所占比 44.77%、北京证券交易所占比0.56%。 从中证新材料主题指数持仓样本的行业来看，工业占比43.47%、原材料占比33.01%、信息技术占比 23.52%。 资料显示，指数样本每半年调整一次，样本调整实施时间分别为每年6月和12月的第二个星期五的下一 交易日。权重因子随样本定期调整而调整，调整时间与指数样本定期调整实施时间相同。在下一个定期 调整日前，权重因子一般固定不变。特殊情况下将对指数进行临时调整。当样本退市时，将其从指数样 本中剔除。样本公司发生收购、合并、分拆等情形的处理，参照计算与维护细则处理。 跟踪新材料的公募基金包括：华宝中证新材料主题ETF联接A、华宝中证新材料ETF、国泰中证新材料 主题联接A、华夏中证新材料主题ETF联接A、天弘中证新材料A、平安中证新材料ETF、华夏中证新材 料主题ETF联接C、国泰中证新材料主题联接C、建信中证新材料主题ETF、华宝中证新材料主题ETF联 接C等。 金融界5月28日消息，上证指数高开震荡，中证新材料主题指数 (新材料，H30597)下跌0.8%，报2809. ...