长盈通涨2.04%，成交额6540.63万元，主力资金净流出633.95万元

Group 1 - The core business of Changying Tong involves the research, production, sales, and service of fiber optic gyroscope core components, specifically fiber optic rings, with a focus on military inertial navigation applications [2] - As of June 30, 2025, Changying Tong achieved a revenue of 192 million yuan, representing a year-on-year growth of 40.40%, and a net profit attributable to shareholders of 29.11 million yuan, reflecting a year-on-year increase of 91.82% [2] - The company has a diverse revenue composition, with fiber optic ring devices accounting for 57.61%, special optical fibers 19.36%, and other segments contributing 23.03% [2] Group 2 - As of September 29, 2023, Changying Tong's stock price increased by 104.46% year-to-date, although it experienced a decline of 6.59% over the last five trading days [1] - The company has seen significant trading activity, with a total market capitalization of 5.497 billion yuan and a trading volume of 65.41 million yuan on September 29, 2023 [1] - Institutional holdings show that major shareholders include Huaxia Military Safety Mixed Fund and new entrants like Great Wall Jiujia Innovation Growth Mixed Fund [3]