Xin Lang Cai Jing·2025-11-04 07:38Core Viewpoint - Ruichuang Micro-Nano has experienced a decline in stock price, with a cumulative drop of 5.68% over the past four days, indicating potential concerns among investors [1] Company Overview - Ruichuang Micro-Nano Technology Co., Ltd. is located in Yantai, Shandong, China, established on December 11, 2009, and listed on July 22, 2019. The company specializes in the design and manufacturing of application-specific integrated circuits, MEMS sensors, and infrared imaging products [1] - The revenue composition of the company is as follows: infrared thermal imaging and optoelectronic business accounts for 94.48%, microwave radio frequency business 2.94%, and others 2.59% [1] Fund Holdings - According to data, a fund under Bank of China Securities holds Ruichuang Micro-Nano as one of its top ten positions. The fund, Zhongyin Securities CSI 500 ETF Linked A (008258), held 200 shares in the third quarter, unchanged from the previous period, representing 0.01% of the fund's net value [2] - The fund has incurred a floating loss of approximately 66 yuan today and a total floating loss of 966 yuan during the four-day decline [2] Fund Manager Performance - The fund managers of Zhongyin Securities CSI 500 ETF Linked A are Liu Xianzheng and Zhang Yimin. Liu has been in the position for 7 years and 281 days, with a total fund asset size of 794 million yuan, achieving a best return of 118.04% and a worst return of -34.66% during his tenure [3] - Zhang has been managing the fund for 5 years and 52 days, also with a total asset size of 794 million yuan, achieving a best return of 23.44% and a worst return of -40.75% during his tenure [3]