A股，重要指数调整！

Core Viewpoint - The adjustment of the CSI 1000 Index sample stocks is effective after the market closes on August 8, 2025, with three stocks being added and three ST stocks being removed [1][3]. Group 1: Index Adjustment Details - The stocks added to the CSI 1000 Index are Wanhe Electric, Tefa Service, and Electric Wind Power, while ST Weiming, ST Emergency, and ST Nuotai are removed [3]. - The newly added stocks have shown strong performance recently, with Wanhe Electric rising by 7.44% on August 8 and a cumulative increase of 17.56% from August 6 to August 8; Electric Wind Power increased by 2.61% on August 8 and 19.23% cumulatively during the same period [3]. - Tefa Service, however, showed weaker performance, declining by 2.10% on August 8 and a slight drop of 1.15% cumulatively from August 6 to August 8 [3]. Group 2: Index Performance Overview - The CSI 1000 Index has performed well overall, with a cumulative increase of 14.78% year-to-date, outperforming the Shanghai Composite Index, Shenzhen Component Index, and ChiNext Index [5]. - Since the third quarter of this year, the CSI 1000 Index has risen by 7.58%, accelerating compared to the first and second quarters [5]. - On August 7, the index reached a high of 6876.50 points, marking the highest level in over two years since April 21, 2023 [5]. Group 3: Stock Performance in the Index - Data shows that over 80% of the 1000 sample stocks in the CSI 1000 Index have increased in the third quarter, with 810 stocks achieving gains [6]. - Nearly 120 stocks in the index have seen year-to-date increases exceeding 50%, with over 20 stocks, including Changcheng Military Industry and Yipin Hong, achieving over 100% gains [6].