Jin Rong Jie·2025-04-18 09:07Group 1 - The A-share market indices closed mixed, with the Shanghai 180 Dynamic Index down by 0.32% to 5437.78 points, with a trading volume of 45.945 billion yuan [1] - The Shanghai 180 Dynamic Index has decreased by 6.45% over the past month, 0.86% over the past three months, and 4.17% year-to-date [1] - The index is based on the Shanghai 180 and 380 indices, selecting securities with high risk exposure to macroeconomic changes for the dynamic index and low risk exposure for the stable index, providing diversified investment targets [1] Group 2 - The top ten holdings of the Shanghai 180 Dynamic Index include China Ping An (11.49%), CITIC Securities (5.23%), and SMIC (3.89%), among others [1] - The index is fully composed of securities listed on the Shanghai Stock Exchange, with a total market share of 100% [1] - The industry composition of the index shows that finance accounts for 33.17%, information technology for 26.76%, and industrials for 14.48%, among other sectors [2] Group 3 - The index sample is adjusted semi-annually, with adjustments occurring on the next trading day after the second Friday of June and December, with a sample change not exceeding 30% [2] - Temporary adjustments may occur under special circumstances, such as delisting or corporate actions like mergers and acquisitions [2]