金融界6月19日消息，上证指数低开低走，中证全指食品与主要用品零售指数 (食药零售，H30176)报 9515.51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。特殊情况下将对指数进行临时调整。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。 从中证全指食品与主要用品零售指数持仓的市场板块来看，上海证券交易所占比52.84%、深圳证券交 易所占比47.16%。 从中证全指食品与主要用品零售指数持仓样本的行业来看，医药商业占比43.94%、超市与便利店占比 21.32%、专营零售占比20.29%、百货商店占比14.46%。 数据统计显示，中证全指食品与主要用品零售指数近一个月下跌2.40%，近三个月下跌6.58%，年至今 下跌6.48%。 据了解，中证全指食品与主要用品零售指数从中证全指指数中选取与食药零售主题相对应的行业内上市 公司证券作为指数样本，以反映该主题上市公司证券的整体 ...

Core Points - The China Securities Index for specialized retail has shown a 4.44% increase over the past month, a 11.08% decrease over the past three months, and a 3.10% decline year-to-date [1] - The index is designed to reflect the overall performance of different industry companies within the China Securities Index sample, categorized into 11 primary industries, 35 secondary industries, over 90 tertiary industries, and more than 200 quaternary industries [1] - The index's top ten holdings include companies such as Shenzhou Digital (21.08%), Kidswant (15.32%), and Jiangsu Guotai (13.42%) [1] Industry Composition - The specialized retail index is composed entirely of specialized retail companies, with a sample adjustment occurring biannually in June and December [2] - The weight factors of the index are generally fixed until the next scheduled adjustment, with provisions for temporary adjustments in case of special events affecting sample companies [2] - The Shenzhen Stock Exchange accounts for 90.76% of the holdings in the specialized retail index, while the Shanghai Stock Exchange accounts for 9.24% [1]

Core Viewpoint - The China Securities Index Retail Index has shown mixed performance, with a recent increase over the past month but a decline year-to-date, indicating potential volatility in the retail sector [2]. Group 1: Index Performance - The China Securities Index Retail Index has increased by 2.41% over the past month and 1.95% over the past three months, but has decreased by 6.91% year-to-date [2]. - The index is designed to reflect the overall performance of different industry companies within the China Securities Index sample, categorized into various levels of industries [2]. Group 2: Index Composition - The top ten weighted companies in the China Securities Index Retail Index include Yonghui Supermarket (10.08%), China Duty Free Group (9.29%), and Digital China (9.03%) [2]. - The index's holdings are primarily from the Shenzhen Stock Exchange (52.44%) and the Shanghai Stock Exchange (47.56%) [2]. - The composition of the index by industry shows that general retail accounts for 47.58%, specialized retail for 27.01%, internet retail for 16.12%, and tourism retail for 9.29% [2]. Group 3: Sample Adjustment - The index sample is adjusted biannually, with changes implemented on the next trading day following the second Friday of June and December [3]. - Weight factors are generally fixed until the next scheduled adjustment, with temporary adjustments made in response to significant events affecting sample companies [3].