资料显示，甬矽电子(宁波)股份有限公司位于浙江省余姚市中意宁波生态园兴舜路22号，成立日期2017 年11月13日，上市日期2022年11月16日，公司主营业务涉及集成电路的封装和测试业务。主营业务收入 构成为：系统级封装产品44.05%，扁平无引脚封装产品34.95%，高密度细间距凸点倒装产品15.79%， 晶圆级封测产品2.94%，其他(补充)2.04%，其他产品0.23%。 9月4日，甬矽电子跌5.11%，截至发稿，报33.44元/股，成交2.75亿元，换手率2.87%，总市值136.98亿 元。 从甬矽电子十大流通股东角度 数据显示，南方基金旗下1只基金位居甬矽电子十大流通股东。南方中证1000ETF（512100）二季度新 进十大流通股东，持有股数225.07万股，占流通股的比例为0.8%。根据测算，今日浮亏损失约405.12万 元。 南方中证1000ETF（512100）基金经理为崔蕾。 截至发稿，崔蕾累计任职时间6年303天，现任基金资产总规模949.76亿元，任职期间最佳基金回报 136.9%， 任职期间最差基金回报-16.81%。 风险提示：市场有风险，投资需谨慎。本文为AI大模型自动发布， ...

Group 1 - The core viewpoint of the news is the performance and financial status of Yongxi Electronics, which experienced a 5.02% drop in stock price, closing at 36.72 yuan per share with a total market capitalization of 15.041 billion yuan [1] - Yongxi Electronics, established on November 13, 2017, specializes in integrated circuit packaging and testing, with its main revenue sources being system-level packaging products (44.05%), flat no-lead packaging products (34.95%), high-density fine-pitch bump flip-chip products (15.79%), wafer-level testing products (2.94%), and other products [1] - The trading volume for Yongxi Electronics was 495 million yuan, with a turnover rate of 4.76% [1] Group 2 - From the perspective of fund holdings, Changcheng Fund has a significant position in Yongxi Electronics, with its Changcheng Jiuheng Mixed A Fund reducing its holdings by 6,309 shares in the second quarter, now holding 78,800 shares, which represents 3.51% of the fund's net value [2] - The Changcheng Jiuheng Mixed A Fund has achieved a year-to-date return of 54.83% and a one-year return of 116.89%, ranking 460 out of 8,189 and 214 out of 7,969 respectively [2]