Jin Rong Jie·2025-05-27 07:59Group 1 - The Shanghai Composite Index opened lower and the CSI 300 Machinery Manufacturing Index reported at 5816.79 points [1] - The CSI 300 Machinery Manufacturing Index has decreased by 0.21% in the past month, 5.59% in the past three months, and increased by 1.11% 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 [1] Group 2 - The top ten weighted stocks in the CSI 300 Machinery Manufacturing Index are: Huichuan Technology (18.05%), Sany Heavy Industry (13.92%), CRRC Corporation (11.06%), Weichai Power (10.23%), China Shipbuilding (8.73%), XCMG (8.66%), China Heavy Industry (6.25%), Hengli Hydraulic (4.67%), Zoomlion (4.48%), and Yutong Bus (4.1%) [1] - The market share of the CSI 300 Machinery Manufacturing Index is 54.88% from the Shanghai Stock Exchange and 45.12% from the Shenzhen Stock Exchange [1] Group 3 - The industry composition of the CSI 300 Machinery Manufacturing Index includes: Engineering Machinery (27.07%), Electric Motors and Industrial Control Automation (18.05%), Shipbuilding and Other Marine Equipment (18.04%), Commercial Vehicles (15.21%), Urban Rail and Railways (14.16%), Fluid Machinery (4.67%), and Other Specialized Machinery (2.80%) [2] - The index sample is adjusted every six months, with adjustments implemented on the next trading day after the second Friday of June and December each year [2] - Weight factors are generally fixed until the next scheduled adjustment, with temporary adjustments made in response to changes in the CSI 300 Index samples [2]