Core Viewpoint - The China Aerospace and Aviation Index (CS Aerospace, H30213) has shown significant growth, with a 2.97% increase over the past month, 19.87% over the past three months, and 9.41% year-to-date, reflecting the overall performance of listed companies in the aerospace sector [2]. Group 1: Index Performance - The CS Aerospace Index is composed of 50 listed companies in the aerospace sector, with a base date of December 31, 2004, set at 1000.0 points [2]. - The index has experienced a monthly increase of 2.97%, a quarterly increase of 19.87%, and a year-to-date increase of 9.41% [2]. Group 2: Index Composition - The top ten weighted companies in the CS Aerospace Index are: AVIC Shenyang Aircraft (9.77%), Guangqi Technology (8.54%), Aero Engine Corporation of China (7.8%), AVIC Optoelectronics (6.77%), AVIC Xi'an Aircraft (5.51%), AVIC Aircraft (4.24%), Aerospace Electronics (3.69%), AVIC Chengfei (3.45%), AVIC Gaoke (3.11%), and Huace Navigation (2.73%) [2]. - The index's holdings are primarily from the Shanghai Stock Exchange (52.90%) and the Shenzhen Stock Exchange (47.10%) [2]. Group 3: Industry Breakdown - The industry composition of the index shows that aerospace accounts for 78.74%, defense equipment for 15.81%, communication equipment for 2.73%, and software development for 2.72% [2]. Group 4: Sample Adjustment - The index samples are adjusted biannually, with adjustments occurring on the next trading day after the second Friday of June and December, with a sample adjustment ratio not exceeding 20% [3]. - Weight factors are adjusted in accordance with sample changes, and special circumstances may lead to temporary adjustments [3].

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].