新华网财经·2025-06-16 01:09Core Viewpoint - The A-share market has undergone a series of index adjustments effective from June 16, impacting various indices including the Shanghai Composite and Shenzhen Composite indices, with a total of 187 sample changes across six cross-market indices [1][3][4]. Group 1: Index Adjustments - The Shanghai and Shenzhen indices have collectively replaced 61 samples, with the Shanghai 50 index changing 4 samples, the Shanghai 180 index changing 18 samples, the Shanghai 380 index changing 38 samples, and the Sci-Tech 50 index changing 1 sample [21][30]. - The six cross-market indices have replaced a total of 187 samples, with the CSI 300 index changing 7 samples, the CSI 500 index changing 50 samples, and the CSI 1000 index changing 100 samples [4][19]. Group 2: New Index Launch - The Shanghai 580 index has been officially launched, focusing on smaller market capitalization stocks within the Shanghai market, reflecting the overall performance of smaller listed companies [2][31]. - Approximately 30% to 60% of the sample weight in the Shanghai 580 index is attributed to sectors such as the Sci-Tech board, specialized and innovative companies, private enterprises, and emerging industries, highlighting its innovative small-cap characteristics [33]. Group 3: Industry Representation - The adjustments have led to an increase in the representation of information technology, communication services, and industrial sectors within the indices, enhancing market representation [18][19]. - The manufacturing sector's weight in the Shenzhen Component Index remains high at 73%, with 211 companies projected to achieve revenue and profit growth in 2024 [30].