On Tuesday, May 12, the Shanghai Composite Index opened 4.26 points higher, or 0.1%, at 4229.28. The Shenzhen Component Index opened 53.49 points higher, or 0.34%, at 15952.79. The CSI 300 Index opened 13.18 points higher, or 0.27%, at 4965.02. The ChiNext Index opened 18.16 points higher, or 0.46%, at 3947.14. The STAR Market 50 Index opened 8.48 points lower, or 0.49%, at 1708.21.