12月12日收盘后正式生效！沪深300、科创50等多个重要指数即将调整样本

Group 1 - The sample adjustment for major indices such as CSI 300 and STAR 50 will be completed after the market closes on December 12, based on established criteria like market capitalization and liquidity [1][2] - The CSI 300 index will replace 11 stocks, including Shenghong Technology, Dongshan Precision, and Ruixin Microelectronics, while removing Foster, Fulete, and TCL Zhonghuan [1] - The adjustments will increase the number of samples in the information technology and communication services sectors by 4 and 2 respectively, with weightings rising by 1.46% and 0.75%, reflecting a shift towards emerging industries [1] Group 2 - The STAR 50 index will replace 2 stocks, adding Aojie Technology and Shengke Communication while removing Huaxi Biological and Hangcai Co [2] - Other indices such as CSI 500, CSI 1000, and CSI A500 will also undergo sample adjustments on the same day, changing 50, 100, and 20 stocks respectively [2] - Adjustments for indices like Shenzhen Component Index and ChiNext Index will take effect on December 15 [3] Group 3 - ETFs tracking these indices will also adjust their portfolios accordingly, with the largest total scale for CSI 300 ETFs exceeding 1.16 trillion yuan [4] - The Huaxia CSI 300 ETF (510330.SH) has a low management fee rate of 0.15% per year and has a fund size exceeding 220 billion yuan as of December 11, with an average daily trading volume of over 500 million yuan [4]