中证1000ETF（512100）涨1.57%，半日成交额22.96亿元

Group 1 - The core viewpoint of the article highlights the performance of the 中证1000ETF (512100), which rose by 1.57% to 3.374 yuan with a trading volume of 2.296 billion yuan as of the midday close [1] - The major holdings of 中证1000ETF include companies such as 香农芯创, which fell by 2.87%, 东芯股份 down by 1.35%, and 源杰科技 up by 2.11% [1] - The fund's performance benchmark is the 中证1000 index, managed by 南方基金管理股份有限公司, with a return of 24.96% since its inception on September 29, 2016, and a recent one-month return of -2.03% [1] Group 2 - The article provides specific stock performance details, indicating that companies like 剑桥科技 and 欧菲光 saw increases of 1.51% and 0.81% respectively, while 长芯博创 experienced a significant drop of 4.53% [1] - The fund manager is 崔蕾, and the article emphasizes the importance of considering market risks when investing [1]