JAC(600418) 金融界· Jin Rong Jie·2025-05-12 13:43Group 1 - The Shanghai Composite Index opened high and the CSI 500 Shanghai Index rose by 0.99%, closing at 6166.61 points with a trading volume of 85.925 billion yuan [1] - The CSI 500 Shanghai Index has increased by 3.72% over the past month, decreased by 1.70% over the past three months, and has fallen by 0.26% year-to-date [1] - The CSI 500 Shanghai Index is composed of all Shanghai-listed securities from the CSI 500 Index, reflecting the overall performance of these securities [1] Group 2 - The top ten weighted stocks in the CSI 500 Shanghai Index include Jianghuai Automobile (1.69%), Chifeng Gold (1.19%), Sichuan Changhong (1.1%), and others [1] - The index is fully composed of stocks listed on the Shanghai Stock Exchange, with a 100% allocation [1] - The industry composition of the CSI 500 Shanghai Index includes 24.06% in industrials, 14.13% in information technology, and 13.63% in materials, among others [2] Group 3 - The index samples are adjusted semi-annually, with adjustments occurring on the next trading day after the second Friday of June and December [2] - Temporary adjustments are made when the CSI 500 Index samples are modified, and companies that are delisted or undergo mergers, acquisitions, or splits are handled according to maintenance guidelines [2]