Core Viewpoint - The Shanghai Composite Index opened high but closed lower, with the CSI 300 Food and Beverage Index reported at 23,349.84 points [1] Group 1: Index Performance - The CSI 300 Food and Beverage Index has decreased by 5.27% over the past month, 2.96% over the past three months, and 4.25% year-to-date [2] Group 2: Index Composition - The CSI 300 Index is categorized into 11 primary industries, 35 secondary industries, over 90 tertiary industries, and more than 200 quaternary industries, with a base date of December 31, 2004, and a base point of 1,000.0 [2] - The top ten weights in the CSI 300 Food and Beverage Index are: Kweichow Moutai (50.79%), Wuliangye (13.2%), Yili (9.98%), Shanxi Fenjiu (4.72%), Luzhou Laojiao (4.66%), Haitian Flavoring (3.82%), Dongpeng Beverage (3.78%), Yanghe Brewery (2.19%), Jinshiyuan (1.75%), and Tsingtao Brewery (1.41%) [2] Group 3: Market Distribution - The market distribution of the CSI 300 Food and Beverage Index shows that the Shanghai Stock Exchange accounts for 76.26%, while the Shenzhen Stock Exchange accounts for 23.74% [2] Group 4: Industry Breakdown - The industry composition of the CSI 300 Food and Beverage Index includes: Baijiu (78.63%), Dairy Products (9.98%), Condiments and Cooking Oils (4.81%), Soft Drinks (3.78%), Beer (1.41%), and Meat Products (1.40%) [3] Group 5: Sample Adjustment - The index samples are adjusted biannually, with adjustments implemented on the next trading day following the second Friday of June and December each year [3] - Weight factors are generally fixed until the next scheduled adjustment, with temporary adjustments made in response to changes in the CSI 300 Index samples [3]

从沪深300食品饮料指数持仓样本的行业来看，白酒占比79.81%、乳制品占比9.64%、调味品与食用油 占比4.64%、软饮料占比3.02%、肉制品占比1.45%、啤酒占比1.43%。 金融界4月28日消息，上证指数低开震荡，沪深300食品饮料指数 (300食品饮料，L11512)报24307.01 点。 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。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。遇临时调整时，当沪深300指数调整样本时，沪深300行业指数样本 随之进行相应调整。在样本公司有特殊事件发生，导致其行业归属发生变更时，将对沪深300行业指数 样本进行相应调整。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 处理，参照计算与维护细则处理。 从指数持仓来看，沪深300食品饮料指数十大权重分别为：贵州茅台（50.89%）、五粮液（13.09%）、 伊利股份（9.64%）、山西汾酒（5.39%）、泸州老窖（4.82%）、海天味业（3.66%）、东鹏饮料 （ ...