Jin Rong Jie·2025-06-03 07:46Group 1 - The Shanghai Composite Index opened lower but rose throughout the day, with the CSI 300 Pharmaceutical and Biotechnology Index reported at 7971.61 points [1] - The CSI 300 Pharmaceutical and Biotechnology Index has increased by 5.53% in the past month, 7.39% in the past three months, and 7.09% year-to-date [1] - The CSI 300 Index categorizes its 300 sample stocks into 11 primary industries, 35 secondary industries, over 90 tertiary industries, and more than 200 quaternary industries [1] Group 2 - The top ten holdings of the CSI 300 Pharmaceutical and Biotechnology Index are: Heng Rui Medicine (25.29%), WuXi AppTec (16.43%), Pian Zai Huang (6.37%), Yunnan Baiyao (5.21%), Kelun Pharmaceutical (5.11%), East China Pharmaceutical (4.06%), Xinhecheng (3.51%), Changchun High-tech (3.48%), Fosun Pharma (3.34%), and Shanghai Raas (3.27%) [1] - The market segments of the CSI 300 Pharmaceutical and Biotechnology Index show that the Shanghai Stock Exchange accounts for 63.65% and the Shenzhen Stock Exchange accounts for 36.35% [2] - The industry composition of the CSI 300 Pharmaceutical and Biotechnology Index includes: chemical drugs (43.80%), pharmaceutical and biotechnology services (21.66%), traditional Chinese medicine (18.52%), and biological drugs (16.02%) [2] Group 3 - The index samples are adjusted every six months, with adjustments implemented on the next trading day following the second Friday of June and December each year [2] - Weight factors are adjusted along with the periodic sample adjustments, which are generally fixed until the next scheduled adjustment [2] - Temporary adjustments occur when the CSI 300 Index samples are modified, and changes in industry classification due to special events will also lead to corresponding adjustments in the CSI 300 industry index samples [2]