上证红利指数下跌0.19%，前十大权重包含大秦铁路等

Group 1 - The Shanghai Dividend Index (000015) experienced a slight decline of 0.19%, closing at 3126.99 points, with a trading volume of 20.687 billion [1] - Over the past month, the Shanghai Dividend Index has increased by 1.56%, and by 7.59% over the last three months, but has decreased by 2.16% year-to-date [1] - The index comprises 50 securities listed on the Shanghai Stock Exchange, selected based on high cash dividend yields, stable dividends, and certain scale and liquidity [1] Group 2 - The top ten weighted stocks in the Shanghai Dividend Index include COSCO Shipping Holdings (4.52%), CITIC Bank (2.9%), and Haier Smart Home (2.8%) among others [1] - The index is fully composed of stocks from the Shanghai Stock Exchange, with a 100% representation [1] Group 3 - The industry composition of the index shows that finance accounts for 36.91%, energy for 20.99%, and industrials for 20.66%, with smaller allocations to consumer discretionary, materials, communication services, utilities, and consumer staples [2] - The index samples are adjusted annually, with the next adjustment scheduled for the trading day following the second Friday of December [3] - Criteria for sample inclusion include a cash dividend yield greater than 0.5%, ranking within the top 90% of average total market capitalization and trading volume, and a three-year average payout ratio between 0 and 1 [3]