Yonyou(600588) 金融界·2025-04-29 08:22Group 1 - The Shanghai Composite Index opened lower and the CSI 300 Computer Index reported 1272.40 points, with a decline of 8.74% in the last month, 6.45% in the last three months, and 4.13% year-to-date [1] - The CSI 300 Index is categorized into 11 primary industries, 35 secondary industries, over 90 tertiary industries, and more than 200 quaternary industries, providing analytical tools for investors [1] - The CSI 300 Computer Index has a market share distribution of 57.46% from the Shanghai Stock Exchange and 42.54% from the Shenzhen Stock Exchange [1] Group 2 - The CSI 300 Computer Index has a sample composition that is 100.00% computer-related [2] - The index samples are adjusted biannually, with adjustments occurring on the next trading day after the second Friday of June and December [2] - Temporary adjustments to the index samples occur when there are changes in the CSI 300 Index, such as company delistings or significant corporate events like mergers or acquisitions [2]