芯片龙头ETF（516640）开盘跌1.02%，重仓股寒武纪跌2.48%，中芯国际跌1.32%

Group 1 - The core viewpoint of the article highlights the performance of the Chip Leader ETF (516640), which opened down by 1.02% at 1.169 yuan on February 4 [1] - The major holdings of the Chip Leader ETF experienced declines, with notable drops including Cambrian (down 2.48%), SMIC (down 1.32%), and Huagong Information (down 1.30%) [1] - The ETF's performance benchmark is the CSI Chip Industry Index return, managed by Fortune Fund Management Co., with a return of 18.30% since its inception on August 19, 2021, and a return of 11.53% over the past month [1]