A股，重要调整

Core Viewpoint - The China Securities Index Co., Ltd. announced the regular adjustment plan for various indices, including the CSI 300, CSI 500, CSI 1000, CSI A50, CSI A100, and CSI A500, which will take effect after the market closes on December 12 [1]. Group 1: CSI 300 Index Adjustments - The CSI 300 index will replace 11 constituent stocks, with new additions including Guolian Minsheng, Guangqi Technology, Ningbo Port, Huadian New Energy, Dongshan Precision, Zhongtian Technology, Zhinancai, and Light Media. Stocks removed from the index include FAW Jiefang, Oppein Home, Fuyao Glass, Longyuan Power, and Trina Solar [2][3]. Group 2: CSI 500 Index Adjustments - The CSI 500 index will replace 50 constituent stocks, with new additions such as Dongfang Yuhong, Heertai, Huahong Semiconductor, Yantian Port, Dazhu CNC, Oppein Home, Zhongce Rubber, and Supor. Stocks removed include China Great Wall, Semir Fashion, Zhongwen Media, and Wangfujing [5]. Group 3: CSI 1000 Index Adjustments - The CSI 1000 index will replace 100 constituent stocks, with new additions including Fenghua Hi-Tech, Shijia Photon, Guoji Precision, Yongding Co., Fuling Pickled Vegetable, Galaxy Magnet, and Hanyu Pharmaceutical [5]. Group 4: Sector Weight Changes - In the CSI 300 index, the number of samples in the information technology and communication services sectors increased by 4 and 2, respectively, with weight increases of 1.46% and 0.75% [5]. - In the CSI 500 index, the industrial sector saw an increase of 11 samples, with a weight increase of 2.48% [5]. - In the CSI 1000 index, the communication services and industrial sectors saw increases of 6 and 2 samples, with weight increases of 0.44% and 0.37% [5]. Group 5: CSI A50 and A100 Index Adjustments - The CSI A50 index will replace 4 constituent stocks, with new additions including Zhongji Xuchuang, Huagong Technology, Guangqi Technology, and Shenghong Technology. Stocks removed include ZTE Corporation, Sanhuan Group, Shanghai Airport, and Hualu Hengsheng [5]. - The CSI A100 index will replace 6 constituent stocks, with new additions including Dongfang Fortune, Guangqi Technology, and Zhongke Shuguang. Stocks removed include Shanghai Airport, Unisplendour, and Citic Securities [5][6]. Group 6: CSI A500 Index Adjustments - The CSI A500 index will replace 20 constituent stocks, with new additions including Zhongtian Technology, Genesis, Borui Pharmaceutical, Guotai Haitong, and Chipone Technology [8].