昀冢科技股价跌5.06%，工银瑞信基金旗下1只基金重仓，持有249股浮亏损失455.67元

Group 1 - The core point of the news is that Yunzhu Technology's stock has experienced a decline of 5.06%, with a current price of 34.34 CNY per share and a total market capitalization of 4.121 billion CNY [1] - Yunzhu Technology, established on December 4, 2013, and listed on April 6, 2021, specializes in the research, production, and sales of camera optical modules (CCM) and voice coil motors (VCM) [1] - The company's main business revenue composition is 99.11% from product sales and 0.89% from other income [1] Group 2 - From the perspective of fund holdings, one fund under ICBC Credit Suisse has a significant position in Yunzhu Technology, with 249 shares held, representing 0.0002% of the circulating shares, making it the second-largest holding [2] - The fund, ICBC SSE STAR 50 ETF Linked A (023725), has a current scale of 206 million CNY and has achieved a return of 33.32% since its inception on April 14, 2025 [2] - The fund manager, Shi Baojiao, has been in the position for 3 years and 327 days, with the total asset scale of 3.304 billion CNY, achieving a best return of 76.74% and a worst return of -30.81% during the tenure [2]