A股重要调整，超2500亿资金大换仓

Core Viewpoint - The recent adjustments in major A-share indices reflect a significant shift towards "new quality productivity," indicating a structural change in the market that may attract both passive and active funds for long-term investment [1][4][8]. Index Adjustments - On December 15, major indices such as the Shenzhen Component Index, ChiNext Index, Shenzhen 100, and ChiNext 50 underwent sample adjustments, with 17 stocks added and 10 removed from the Shenzhen Component Index, 8 from the ChiNext Index, 7 from Shenzhen 100, and 5 from ChiNext 50 [1][3]. - The adjustments involved the removal of companies from traditional sectors and the inclusion of firms in high-growth areas such as semiconductors, AI, and new energy [4][5]. Market Impact - The adjustments are expected to trigger substantial passive fund reallocations, with over 250 billion yuan in index funds tracking the adjusted indices [6][7]. - The strategic emerging industries' weight in the ChiNext Index rose to 93%, while the Shenzhen 100's weight increased to 81%, indicating a strong focus on advanced manufacturing and digital economy sectors [5][8]. Investment Opportunities - The newly added companies generally have market capitalizations between 5 billion to 80 billion yuan and exhibit strong growth metrics, with many showing over 20% compound annual growth in revenue and net profit [4][5]. - The adjustments are seen as a long-term reflection of market structure optimization, with a focus on attracting more long-term capital into sectors aligned with "new quality productivity" [7][8].