Jin Rong Jie·2025-05-21 15:41Group 1 - The Shanghai Composite Index increased by 0.21%, while the CSI Shanghai Technology Leading Index reported a value of 1547.52 points [1] - The CSI Shanghai Technology Leading Index has risen by 3.22% in the past month, decreased by 6.91% over the last three months, and increased by 5.45% year-to-date [2] - The index consists of 50 listed companies in Shanghai with strong profitability, growth potential, and high R&D investment, reflecting the overall performance of the technology sector in the region [2] Group 2 - The top ten weighted companies in the CSI Shanghai Technology Leading Index include WuXi AppTec (10.44%), SMIC (9.61%), and Will Semiconductor (7.75%) [2] - The index's holdings are primarily from the Shanghai Stock Exchange (77.27%) and the Shenzhen Stock Exchange (22.73%) [2] - The industry composition of the index shows that Information Technology accounts for 48.25%, Healthcare for 26.04%, Communication Services for 14.06%, Industry for 10.46%, and Materials for 1.19% [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 [3] - If a sample company ranks in the top two by total market capitalization within its industry, it is prioritized for retention during adjustments [3] - The weight factors are adjusted in line with the sample adjustments, and special circumstances may lead to temporary adjustments [3]