科创50ETF增强（588450）开盘跌0.75%，重仓股中芯国际跌1.28%，海光信息跌1.68%

Group 1 - The core viewpoint of the article highlights the performance of the Kexin 50 ETF Enhanced (588450), which opened down by 0.75% at 1.975 yuan on February 2 [1] - Major holdings in the Kexin 50 ETF Enhanced experienced declines, including SMIC down 1.28%, Haiguang Information down 1.68%, and others such as Zhongwei Company, Lanke Technology, and Cambrian down by varying percentages [1] - The performance benchmark for the Kexin 50 ETF Enhanced is the Shanghai Stock Exchange Science and Technology Innovation Board 50 Index return rate, managed by China Merchants Fund Management Co., Ltd. [1] Group 2 - Since its establishment on May 6, 2024, the Kexin 50 ETF Enhanced has achieved a return of 99.29%, with a one-month return of 14.31% [1]