Jin Rong Jie·2025-05-26 14:25Core Points - The China Securities Index of Jiangyin Wealth Management in the Yangtze River Delta has shown a decline of 0.5%, closing at 2231.45 points with a trading volume of 44.851 billion yuan [1] - Over the past month, the index has increased by 2.19%, but it has decreased by 5.87% over the last three months and by 3.02% year-to-date [1] Index Composition - The index includes 40 representative listed companies from strategic emerging industries and 60 from non-strategic emerging industries, focusing on companies with large market capitalization, high revenue, and strong R&D investment [1] - The top ten weighted stocks in the index are: Dongfang Caifu (7.95%), Hengrui Medicine (5.73%), Hikvision (4.1%), Weir Shares (3.71%), WuXi AppTec (3.71%), iFlytek (3.48%), SAIC Motor (3.11%), Lanke Technology (2.93%), Jianghuai Automobile (2.91%), and Bank of Communications (2.7%) [1] Market and Sector Breakdown - The Shanghai Stock Exchange accounts for 66.52% of the index, while the Shenzhen Stock Exchange accounts for 33.48% [2] - Sector allocations within the index include: Information Technology (27.60%), Financials (19.93%), Industrials (17.64%), Healthcare (13.46%), Materials (10.54%), Consumer Discretionary (7.97%), Communication Services (1.71%), Energy (0.71%), and Real Estate (0.44%) [2] Index Adjustment Mechanism - The index samples are adjusted biannually, with adjustments occurring on the next trading day after the second Friday of June and December [2] - Each adjustment typically does not exceed 20% of the sample, and weight factors are adjusted accordingly [2]