Core Viewpoint - The aerospace ETF Tianhong (159241) has shown strong performance with a recent increase of 1.72%, reflecting a growing interest in the aerospace and defense sector, particularly as the Army Day approaches [3][4]. Group 1: ETF Performance - The aerospace ETF Tianhong (159241) has achieved a cumulative increase of nearly 4% over the past three days, with a trading volume of 39.76 million yuan [3]. - The fund has seen a net subscription of 5 million shares today, indicating strong investor interest [4]. Group 2: Industry Trends - The aerospace ETF closely tracks the National Aerospace Industry Index, which has a high concentration of military-related stocks, with over 73% of its weight in aerospace and defense equipment [4][6]. - The upcoming Army Day is expected to further boost the aerospace and defense sector, leading to increased activity and investment in the industry [4]. Group 3: Low-altitude Economy Developments - The first International Low-altitude Economy Expo was held in Shanghai, attracting nearly 300 global enterprises, indicating a growing focus on low-altitude economic development [5]. - A significant order for 500 eVTOL aircraft worth 1.75 billion USD was signed, marking a major milestone for the Chinese eVTOL market [5]. Group 4: Index Characteristics - The National Aerospace Industry Index has the highest military-related stock content in the market, with 98.2% of its constituents belonging to the defense industry [6]. - The index also has the highest concentration of drone-related companies, making it a key player in the drone market [7]. - The index is well-positioned to benefit from the trend of military modernization towards high-end aerospace applications, outperforming traditional military indices in terms of returns [8][9].