金融界7月15日消息，A股三大指数收盘涨跌不一，中证中央企业红利指数 (央企红利，000825)下跌 0.6%，报3340.47点，成交额352.79亿元。 数据统计显示，中证中央企业红利指数近一个月上涨5.28%，近三个月上涨8.66%，年至今上涨2.84%。 据了解，中证中央企业红利指数从中央企业中选取现金股息率高、分红比较稳定且有一定规模及流动性 的50只证券作为指数样本，反映中央企业中高股息率证券的整体表现。该指数以2008年12月31日为基 日，以1000.0点为基点。 资料显示，指数样本每年调整一次，样本调整实施时间为每年12月的第二个星期五的下一交易日。对原 样本的样本空间资格设置缓冲区，即在新一轮样本调整中，将不满足以下任一条件的原样本从样本空间 中剔除，剩余的原样本保留在样本空间中：（1）实际控制人为国务院国资委或财政部；（2）过去一年 现金股息率大于0.5%；（3）过去一年内日均总市值排名在中证全指指数样本空间前90%；（4）过去一 年内日均成交金额排名在中证全指指数样本空间前90%；（5）过去三年股利支付率均值大于0且小于 1。同时，设置调整比例限制，即每次调整的样本比例一般不超过20% ...

Core Points - The Central Enterprises Dividend Index (央企红利, 000825) experienced a decline of 0.34%, closing at 3185.9 points with a trading volume of 21.801 billion yuan on May 27 [1] - Over the past month, the index has increased by 1.41%, while it has risen by 1.78% over the last three months, but has decreased by 2.17% year-to-date [1] - The index comprises 50 securities selected from central enterprises that have high cash dividend yields, stable dividends, and certain scale and liquidity, reflecting the overall performance of high dividend yield securities among central enterprises [1] Index Adjustment Criteria - The index samples are adjusted annually, with the adjustment taking place on the next trading day after the second Friday of December [2] - Original samples are removed if they do not meet specific criteria, including being controlled by the State-owned Assets Supervision and Administration Commission or the Ministry of Finance, having a cash dividend yield greater than 0.5% in the past year, and ranking in the top 90% for average total market capitalization and trading volume [2] - The adjustment ratio is generally limited to 20%, unless more than 20% of the original samples are disqualified due to the cash dividend yield criterion [2] Fund Tracking the Index - Public funds tracking the Central Enterprises Dividend Index include Huatai-PB Central Enterprises Dividend Link A, Huatai-PB Central Enterprises Dividend Link C, and Huatai-PB Central Enterprises Dividend ETF [2]