龙虎榜复盘丨机游共振航天，AI应用再度爆发

Group 1: Stock Market Activity - On the institutional leaderboard, 36 stocks were listed, with 24 showing net buying and 22 showing net selling [1] - The top three stocks with the highest net buying by institutions were Dongyangguang (1.063 billion), Zhenlei Technology (422 million), and Aerospace Electronics (260 million) [1] Group 2: AI Applications - Yidian Tianxia, a leader in cross-border marketing, has developed a self-research GEO optimization framework to enhance brand visibility in generative AI search results [2] - Leo Holdings has launched a large model "Leo Unified" in the marketing sector, providing a one-stop intelligent platform for advertising clients [2] - GEO refers to an engine optimization method based on generative AI, aimed at improving content visibility in AI search results by enhancing data sources and authoritative citations [2] Group 3: Aerospace Industry - Qianzhao Optoelectronics has successfully applied gallium arsenide solar cell epitaxial wafers and chips in the commercial aerospace sector, maintaining the highest domestic market shipment volume [4] - Xinke Mobile's subsidiary recently won a bid for a terminal verification evaluation system and a payload testing subsystem for satellite internet research [4] - Guangzhou's government has announced a plan to accelerate the construction of a strong advanced manufacturing city, focusing on reusable rocket technology and supporting the development of a complete commercial aerospace industry ecosystem [4] Group 4: Satellite Launch Demand - According to Guojin Securities, there is an urgent global demand for satellite launches due to the "first come, first served" rule for low-orbit satellite resources [5] - The theoretical capacity for near-Earth orbit is approximately 60,000 satellites, with SpaceX's Starlink having launched over 10,000 and domestic plans for nearly 30,000 [5] - The core costs of rockets, including engines and structural components, account for over 60% of total costs, with 3D printing technology being a significant trend for cost reduction and efficiency improvement in engine manufacturing [5]