China's Shanghai Composite Index opened down 13.85 points, or 0.34%, at 4094.23 on Thursday, June 18. The Shenzhen Component Index opened down 54.16 points, or 0.34%, at 15826.79. The CSI 300 Index opened down 15.34 points, or 0.31%, at 4916.04. The ChiNext Index opened down 13.43 points, or 0.32%, at 4153.62. The STAR Market 50 Index opened down 3.75 points, or 0.2%, at 1837.07.