Core Viewpoint - The China Securities Index for Aerospace and Military Industry (空天军工指数) has shown mixed performance, with a recent decline despite a slight increase over the past month, indicating potential volatility in the sector [1][2]. Group 1: Index Performance - The Aerospace and Military Industry Index opened lower and experienced a decline of 0.33%, closing at 1961.31 points with a trading volume of 17.052 billion yuan [1]. - Over the past month, the index has increased by 2.43%, but it has decreased by 3.72% over the last three months, and it has risen by 2.28% year-to-date [1]. Group 2: Index Composition - The index includes companies whose main business is closely related to the aerospace and military strategy, covering sectors such as aircraft, power and control systems, early warning systems, weapon systems, C4ISR systems, military digitalization, and aerospace materials [1]. - The top ten weighted companies in the index are: AVIC Shenyang Aircraft (9.01%), AVIC Optoelectronics (7.08%), Aero Engine Corporation of China (6.99%), AVIC Xi'an Aircraft (5.23%), AVIC Aircraft (4.08%), Haige Communications (3.76%), AVIC Chengfei (3.7%), Aerospace Electronics (3.56%), Ruichuang Micro-Nano (3.31%), and Western Superconducting (3.21%) [1]. Group 3: Market Distribution - The index's market distribution shows that the Shanghai Stock Exchange accounts for 55.76% and the Shenzhen Stock Exchange accounts for 44.24% [2]. - In terms of industry composition, the index is comprised of 72.39% industrial companies, 13.28% materials, 7.81% information technology, and 6.52% communication services [2]. Group 4: Index Adjustment - The index samples are adjusted semi-annually, with adjustments occurring on the next trading day after the second Friday of June and December each year [2]. - Weight factors are adjusted in accordance with the sample changes, and temporary adjustments may occur under special circumstances, such as delisting or corporate restructuring [2]. Group 5: Related Funds - Public funds tracking the Aerospace and Military Industry Index include Penghua China Securities Aerospace and Military Industry C and Penghua China Securities Aerospace and Military Industry A [3].