Jin Rong Jie·2025-04-29 08:24Group 1 - The Shanghai Composite Index opened lower and the CSI 300 Pharmaceutical and Biotechnology Index reported 7459.13 points [1] - The CSI 300 Pharmaceutical and Biotechnology Index has decreased by 3.80% over the past month, increased by 3.37% over the past three months, and has risen by 0.20% 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 in the CSI 300 Pharmaceutical and Biotechnology Index are: Heng Rui Medicine (24.67%), WuXi AppTec (16.06%), Pian Zai Huang (6.84%), Yunnan Baiyao (5.71%), Kelun Pharmaceutical (4.69%), New Horizon (3.81%), East China Pharmaceutical (3.6%), Shanghai Raist (3.44%), Fosun Pharma (3.37%), and Changchun High-tech (3.18%) [1] - The market share of the CSI 300 Pharmaceutical and Biotechnology Index is 63.43% from the Shanghai Stock Exchange and 36.57% from the Shenzhen Stock Exchange [2] - The industry composition of the index includes: chemical drugs (42.67%), pharmaceutical and biotechnology services (21.27%), traditional Chinese medicine (19.68%), and biological drugs (16.38%) [2] Group 3 - The index samples are 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 adjusted along with the 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 [2]