金融界4月28日消息，上证指数低开震荡，沪深300资本品指数 (300资本品，L11503)报3466.88点。 数据统计显示，沪深300资本品指数近一个月下跌7.46%，近三个月下跌4.71%，年至今下跌7.97%。 据了解，沪深300资本品指数从沪深300指数中选取与资本品主题相对应的行业内上市公司证券作为指数 样本，以反映该主题上市公司证券的整体表现。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资本品指数十大权重分别为：宁德时代（22.14%）、汇川技术（4.95%）、 中国建筑（4.07%）、三一重工（4.01%）、国电南瑞（3.25%）、隆基绿能（3.2%）、阳光电源 （3.02%）、中国中车（3.02%）、潍柴动力（2.92%）、徐工机械（2.64%）。 从沪深300资本品指数持仓的市场板块来看，深圳证券交易所占比50.58%、上海证券交易所占比 49.42%。 从沪深300资本品指数持仓样本的行业来看，电力设备占比49.10%、机械制造占比28.23%、建筑装饰占 比15.50%、航空航天与国防占比7.17%。 资料显示，指数样本每半年调整一次，样本 ...

Group 1 - The A-share market's three major indices closed mixed, with the CSI 300 Capital Goods Index at 3459.62 points, reflecting a decline of 7.36% over the past month, 4.91% over the past three months, and 8.16% year-to-date [1] - The CSI 300 Capital Goods Index is composed of listed companies in the capital goods sector selected from the CSI 300 Index, aiming to represent the overall performance of these companies [1] - The index's top ten weightings include CATL (22.21%), Huichuan Technology (4.91%), China State Construction (4.08%), Sany Heavy Industry (4.01%), and others, indicating a concentration in a few key players [1] Group 2 - The CSI 300 Capital Goods Index has a market composition of 50.57% from the Shenzhen Stock Exchange and 49.43% from the Shanghai Stock Exchange, showing a balanced representation between the two exchanges [1] - In terms of industry composition, the index is heavily weighted towards power equipment (49.09%), followed by machinery manufacturing (28.23%), construction decoration (15.52%), and aerospace and defense (7.16%) [1] - The index sample is adjusted biannually, with changes implemented on the next trading day after the second Friday of June and December, ensuring that the index remains reflective of the current market conditions [2]