中证1000ETF（159845）开盘涨0.09%，重仓股香农芯创跌2.39%，东芯股份跌0.30%

Group 1 - The core point of the article highlights the performance of the 中证1000ETF (159845), which opened with a slight increase of 0.09% at 3.425 yuan [1] - The major holdings of 中证1000ETF include 香农芯创, 东芯股份, 源杰科技, 剑桥科技, 欧菲光, 长芯博创, 淳中科技, 德明利, 永鼎股份, and 雅化集团, with varying performance among these stocks [1] - The fund's performance benchmark is the 中证1000 index return, managed by 华夏基金管理有限公司, with a return of 41.84% since its establishment on March 18, 2021, and a recent one-month return of -2.07% [1]