A股重要调整，今起实施

Core Viewpoint - The article discusses the recent sample adjustments to various Shenzhen stock indices, highlighting the focus on promoting new productive forces, strengthening the real economy, and guiding long-term value investment [3][5]. Group 1: Index Adjustments - The Shenzhen Component Index has replaced 17 sample stocks, removing 10 from the main board and 7 from the ChiNext board, including companies like China National Pharmaceutical (000028.SZ) and Tibet Mining (000762.SZ) [4]. - The ChiNext Index has replaced 8 sample stocks, with companies like BeWater (300070.SZ) and Yihua Record (300212.SZ) being removed, while new additions include Dazhu CNC (301200.SZ) and Changshan Pharmaceutical (300255.SZ) [4]. - The Shenzhen 100 Index has replaced 7 sample stocks, with Tianshan Shares (000877.SZ) and Shanxi Coking Coal (000983.SZ) being removed, and new companies added from both the main board and ChiNext [4]. - The ChiNext 50 Index has replaced 5 sample stocks, removing companies like Teradyne (300001.SZ) and Mango Super Media (300413.SZ), while adding Longxin Bochuang (300548.SZ) and Xiechuang Data (300857.SZ) [5]. Group 2: Strategic Focus - The adjustments reflect a commitment to developing new productive forces, with the ChiNext Index's strategic emerging industry weight reaching 93%, and R&D expenses for the new sample companies growing by 13% year-on-year [5]. - The Shenzhen 100 Index has enhanced its new quality blue-chip attributes, with strategic emerging industries now accounting for 81% of its weight, and key sectors like advanced manufacturing and digital economy making up 79% [5]. - The ChiNext 50 Index has a strategic emerging industry weight of 98%, with new generation information technology industries, including AI and chips, comprising 45% [5]. Group 3: Economic Fundamentals - The Shenzhen Component Index now has a manufacturing company weight of 76%, the highest among Chinese capital market indices, with over 30% being single champion enterprises in manufacturing [6]. - The ChiNext Index shows strong growth, with new sample companies reporting a 16% increase in revenue and a 24% increase in net profit year-on-year, particularly in high-end equipment manufacturing and new energy sectors [6]. - Over 80% of the Shenzhen 100 sample companies have expanded their business internationally, with overseas revenue showing a compound annual growth rate of 17% over the past three years [6]. Group 4: Investor Returns - Nearly 60% of the new sample companies in the Shenzhen Component Index have implemented "quality return dual enhancement" action plans, with over 30% engaging in stock repurchase programs [6]. - In the ChiNext Index, 64 companies have an ESG rating of A or above, representing 79% of the index [6]. - The Shenzhen 100 sample companies have distributed a total of 302.2 billion yuan in dividends this year, accounting for 55% of the total dividends in the Shenzhen market, with a rolling net asset return rate of 12% over the past year [6].