2 1 Shi Ji Jing Ji Bao Dao·2025-12-14 14:41Core Viewpoint - The periodic sample adjustment of various indices, including the Shanghai Stock Exchange 50 and ChiNext indices, is set to take effect, reflecting a shift towards including more emerging industry leaders and enhancing the technology attributes of these indices [1][9]. Index Adjustments - The Shanghai Stock Exchange 50 Index will replace 4 samples, while the Shanghai 180 Index will replace 7 samples, and the Shanghai 380 Index will replace 38 samples [1]. - The ChiNext Index will see 8 samples replaced, with notable additions including companies like Aosheng Technology and Shenghong Technology [1][3]. - The CSI 500 Index will replace 50 samples, and the CSI 1000 Index will replace 100 samples, indicating a significant overhaul [1]. Emerging Industry Focus - The adjustments will increase the representation of strategic emerging industries, with the ChiNext Index's strategic emerging industry weight reaching 93% [9]. - The new sample companies have shown a 13% year-on-year increase in R&D expenses, with 30 companies having an R&D intensity exceeding 10% [9]. - The weight of strategic emerging industries in the ChiNext 50 Index is now at 98%, with new generation information technology industries, such as artificial intelligence and chips, accounting for 45% [9]. ETF Rebalancing - Following the index adjustments, ETFs tracking these indices will also undergo rebalancing to align with the new sample compositions [8].