After the market closes on September 12, the Sci-Tech Innovation Board Index will be adjusted for the third quarter of 2025.

On August 29, the Shanghai Securities News learned from the Shanghai Stock Exchange and the China Securities Index Company that, according to the index compilation rules, the samples of science and technology innovation indexes such as the Sci-Tech 50 are adjusted regularly every quarter, and this adjustment will take effect after the close of trading on September 12. Sanhua Intelligent Electronic will be included in the Sci-Tech 50 index, and companies such as Efort, and Zhongke Blue Letter will be included in the Sci-Tech 100 index. After this sample adjustment, on one hand, the representativeness of the Sci-Tech broad-based index in the Sci-Tech board market is further enhanced. After the adjustment, the total market value of the Sci-Tech 50 index is 3.1 trillion yuan, covering 38.9%. The total market value of the Sci-Tech 100 index is 1.9 trillion yuan, covering 24.4%. The total market value coverage of the Sci-Tech 50, Sci-Tech 100, and Sci-Tech 200 indexes reaches 84.6%, an increase of 0.5 percentage points from before the adjustment, collectively reflecting the performance of securities of large, medium, and small market values in the Sci-Tech board. On the other hand, the top five component stocks of the Sci-Tech 50 and Sci-Tech 100 indexes remain basically unchanged. The number of adjustments has not reached the proportion limit for several consecutive quarters, indicating a relatively stable market value structure of securities in the Sci-Tech board. Before and after the adjustment, the total weight of the top five weighted stocks in the Sci-Tech 50 index is 39.1%; the total weight of the top five weighted stocks in the Sci-Tech 100 index is 13.9%. The top three industries are new information technology, biomedicine, and high-end equipment.