金融界7月15日消息，A股三大指数收盘涨跌不一，中证等权重90指数 (等权90，000971)上涨0.75%，报 2723.35点，成交额1949.29亿元。 数据统计显示，中证等权重90指数近一个月上涨5.35%，近三个月上涨7.11%，年至今上涨0.98%。 据了解，中证等权重90指数由上证50指数样本和按照上证50指数选样方法在深圳市场中选出的40只上市 公司证券等权重加权组成，综合反映沪深市场规模大、流动性好的90家上市公司证券的整体表现。该指 数以2003年12月31日为基日，以1000.0点为基点。 从中证等权重90指数持仓的市场板块来看，上海证券交易所占比54.47%、深圳证券交易所占比 45.53%。 从中证等权重90指数持仓样本的行业来看，信息技术占比20.84%、工业占比17.63%、金融占比 17.19%、通信服务占比11.14%、可选消费占比8.49%、主要消费占比6.30%、原材料占比5.62%、医药卫 生占比4.42%、能源占比4.17%、公用事业占比2.12%、房地产占比2.09%。 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 ...

Core Points - The China Securities Index Equal Weight 90 Index (CSI Equal Weight 90) opened high and fluctuated, rising by 0.33% to 2704.23 points with a trading volume of 259.968 billion yuan [1] - Over the past month, the CSI Equal Weight 90 Index has increased by 4.01%, and over the past three months, it has risen by 6.48%, while it has decreased by 0.05% year-to-date [1] - The index consists of 90 listed companies, including the top 50 from the Shanghai Stock Exchange and 40 selected from the Shenzhen market, reflecting the overall performance of large-cap, liquid stocks [1] Index Holdings - The top ten weights in the CSI Equal Weight 90 Index are: Zhongji Xuchuang (1.43%), Xinyi Sheng (1.39%), Hudian Co. (1.38%), Sunshine Power (1.31%), Tianfu Communication (1.28%), WuXi AppTec (1.27%), Bank of Communications (1.27%), Bank of China (1.27%), Ping An Bank (1.21%), and Industrial and Commercial Bank of China (1.21%) [1] - The index's holdings are distributed with 54.98% from the Shanghai Stock Exchange and 45.02% from the Shenzhen Stock Exchange [1] Industry Composition - The industry composition of the CSI Equal Weight 90 Index includes: Information Technology (20.78%), Industrials (17.81%), Financials (17.49%), Communication Services (10.42%), Consumer Discretionary (8.50%), Consumer Staples (6.41%), Materials (5.68%), Health Care (4.46%), Energy (4.15%), Real Estate (2.17%), and Utilities (2.14%) [2] - The index samples are adjusted semi-annually, with adjustments occurring on the next trading day after the second Friday of June and December [2] Fund Tracking - Public funds tracking the CSI Equal Weight 90 Index include: Yinhua CSI Equal Weight 90 [3]