沪深300高贝塔指数下跌0.76%，前十大权重包含天孚通信等

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]