Core Viewpoint - The Shanghai Composite Index opened high but closed lower, with the CSI 300 High Beta Index declining by 0.76% to 2613.17 points, with a trading volume of 240.68 billion yuan [1] Group 1: Index Performance - The CSI 300 High Beta Index has increased by 7.95% over the past month, 15.34% over the past three months, and 9.60% year-to-date [2] - The index is based on a sample space of its parent index, ranking securities by their beta values over the past year [2] Group 2: Index Holdings - The top ten weights in the CSI 300 High Beta Index are: Guotai Junan (13.31%), Xinyi Sheng (2.39%), Zhongji Xuchuang (2.18%), Tonghuashun (1.56%), Tianfu Communication (1.47%), China Shipbuilding Industry (1.33%), China State Shipbuilding (1.30%), Zhifei Biological (1.28%), Tianqi Lithium (1.27%), and Cambrian (1.22%) [2] - The market share of the CSI 300 High Beta Index holdings is 57.15% from the Shanghai Stock Exchange and 42.85% from the Shenzhen Stock Exchange [2] Group 3: Industry Composition - The industry composition of the CSI 300 High Beta Index includes: Industrial (25.63%), Financial (25.47%), Information Technology (17.02%), Healthcare (10.66%), Communication Services (9.87%), Materials (4.36%), Consumer Discretionary (4.14%), and Consumer Staples (2.84%) [3] - The index samples are adjusted biannually, with adjustments occurring on the next trading day after the second Friday of June and December [3]

从指数持仓来看，沪深300高贝塔指数十大权重分别为：国泰海通（25.38%）、科伦药业（1.55%）、 亿纬锂能（1.33%）、恒瑞医药（1.26%）、寒武纪（1.25%）、新易盛（1.24%）、百利天恒 （1.23%）、先导智能（1.22%）、润泽科技（1.17%）、隆基绿能（1.13%）。 从沪深300高贝塔指数持仓的市场板块来看，上海证券交易所占比62.61%、深圳证券交易所占比 37.39%。 从沪深300高贝塔指数持仓样本的行业来看，金融占比36.28%、工业占比22.48%、信息技术占比 11.41%、医药卫生占比9.45%、通信服务占比6.70%、原材料占比5.13%、主要消费占比4.37%、可选消 费占比3.77%、房地产占比0.40%。 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。每次调整的样本比例一般不超过20%。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 ...