数据统计显示，中证航空航天指数近一个月上涨2.97%，近三个月上涨19.87%，年至今上涨9.41%。 据了解，中证航空航天指数选取50只航空航天领域的上市公司证券作为指数样本，以反映航空航天主题 上市公司证券的整体表现。该指数以2004年12月31日为基日，以1000.0点为基点。 金融界7月31日消息，上证指数低开低走，中证航空航天指数 (CS航空航天，H30213)报10440.45点。 从中证航空航天指数持仓的市场板块来看，上海证券交易所占比52.90%、深圳证券交易所占比 47.10%。 从中证航空航天指数持仓样本的行业来看，航空航天占比78.74%、国防装备占比15.81%、通信设备占 比2.73%、软件开发占比2.72%。 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 ...

Core Viewpoint - The China Securities Aerospace Index (CS Aerospace, H30213) is currently at 9234.78 points, reflecting a recent upward trend in the aerospace and defense sector despite a year-to-date decline of 3.23% [1][2]. Group 1: Index Performance - The CS Aerospace Index has increased by 5.60% over the past month and by 1.35% over the last three months, while it has decreased by 3.23% year-to-date [2]. - The index is composed of 50 listed companies with significant daily market capitalization in the aerospace sector, providing diverse investment options for investors [2]. Group 2: Index Composition - The top ten weighted companies in the CS Aerospace Index are: Guoke Technology (9.89%), AVIC Shenyang Aircraft (8.21%), AVIC Optoelectronics (7.7%), Aero Engine Corporation of China (7.02%), AVIC Xi'an Aircraft (5.29%), AVIC Aircraft (4.31%), Aerospace Electronics (3.67%), AVIC Chengfei (3.65%), AVIC Gaoke (3.01%), and China Satellite (2.53%) [2]. - The index's holdings are distributed between the Shenzhen Stock Exchange (50.93%) and the Shanghai Stock Exchange (49.07%) [2]. - The industry composition of the index includes Aerospace (61.47%), Defense Equipment (25.84%), and Space (12.70%) [2]. Group 3: Index Adjustment Mechanism - The index samples are adjusted semi-annually, 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 special circumstances allowing for temporary adjustments [3]. - Companies that are delisted or undergo significant changes, such as mergers or acquisitions, will be removed or adjusted accordingly from the index [3].