Core Insights - Yan'ao Co., Ltd. (300923.SZ) released its semi-annual report for 2025 on August 28, 2025, indicating significant institutional investment in the company [1] Institutional Holdings - As of August 27, 2025, five institutional investors disclosed holdings in Yan'ao Co., Ltd., totaling 37.6867 million shares, which represents 47.95% of the company's total share capital [1] - The institutional investors include Changchun Yan'ao Group Co., Ltd., Changchun Yan'ao Tongren Investment Partnership (Limited Partnership), China Construction Bank Corporation - Nuoan Multi-Strategy Equity Securities Investment Fund, UBS AG, and Penghua CSI High-Speed Rail Industry Index (LOF) A [1] - Compared to the previous quarter, the total institutional holding percentage increased by 0.55 percentage points [1] Public Fund Disclosures - During this period, two new public funds were disclosed compared to the previous quarter, including Nuoan Multi-Strategy Mixed A and Penghua CSI High-Speed Rail Industry Index (LOF) A [1]

从中证高铁产业指数持仓的市场板块来看，上海证券交易所占比84.89%、深圳证券交易所占比 15.11%。 从中证高铁产业指数持仓样本的行业来看，工业占比96.10%、通信服务占比2.09%、原材料占比 1.81%。 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。每次调整的样本比例一般不超过20%。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。 据了解，中证高铁产业指数选取涉及高铁基础工程、高铁整车、高铁电气工程、高铁通信设备、高铁信 息系统、高铁营运等业务的上市公司证券作为指数样本，以反映高铁产业相关上市公司证券的整体表 现。该指数以2012年12月31日为基日，以1000.0点为基点。 从指数持仓来看，中证高铁产业指数十大权重分别为：京沪高铁（15.18%）、大秦铁路（15.13%）、 中国中车（14.95%）、中国中铁（10.81%）、中国铁建（ ...