Zheng Quan Ri Bao·2026-02-28 01:11Group 1 - The core announcement is about the quarterly adjustment results of the Sci-Tech 50 and other indices, which will be implemented after the market closes on March 13 [1] - Three companies, including Keda Guandun Quantum Technology Co., Ltd., Shenzhen Zhongke Feimeng Technology Co., Ltd., and Zhongke Xingtai Co., Ltd., will be added to the Sci-Tech 50 Index, while ten other securities will be added to the Sci-Tech 100 Index [1] - After the adjustments, the total market capitalization of the Sci-Tech 50 Index will be 4.5 trillion yuan, covering 39% of the market, while the Sci-Tech 100 Index will have a total market capitalization of 2.7 trillion yuan, covering 24% of the market, resulting in a combined coverage of 63%, an increase of 1.1% [1] Group 2 - The Shanghai Stock Exchange has been enhancing its "one body, two wings" index system to improve the quality and diversity of indices, effectively supporting long-term capital inflow and national strategic initiatives [2] - The periodic adjustments of existing indices aim to optimize industry structures, with the weight of information technology and other "new economy" sectors increasing by 4.9% and 4.7% respectively by the end of 2024 [2] - The newly launched indices cover the entire market capitalization and industry chain of the Sci-Tech Board, guiding over 320 billion yuan into "hard technology" companies [2]