跌停！长信基金旗下1只基金持仓光电股份，合计持股比例0.71%

Core Viewpoint - The stock of Optoelectronics Co., Ltd. experienced a limit-down on April 7, indicating significant market concerns regarding the company's performance and outlook [1]. Group 1: Company Overview - Optoelectronics Co., Ltd. is a key research and production base for optoelectronic weapon systems under the China North Industries Group Corporation, and it is a major supplier of optical materials both domestically and internationally [1]. - Changxin Fund's Changxin National Defense and Military Industry Quantitative Mixed A is among the top ten shareholders of Optoelectronics, having reduced its holdings to 0.71% in the fourth quarter of last year [1]. Group 2: Fund Performance - The Changxin National Defense and Military Industry Quantitative Mixed A fund has achieved a year-to-date return of 2.46%, ranking 814 out of 2324 in its category [1]. Group 3: Fund Management - The fund manager of Changxin National Defense and Military Industry Quantitative Mixed A is Song Haikuan, who has a background in applied mathematics and has held various positions in the investment sector since joining Changxin Fund in 2016 [4][5]. Group 4: Fund Company Background - Changxin Fund Management Co., Ltd. was established in May 2003, with Liu Yuanrui as the chairman and Qin Bo as the general manager. The company has five shareholders, with Changjiang Securities Co., Ltd. holding 44.55% [6].