China's Shanghai Composite Index closed down 16.0 points, or 0.41%, at 3875.6 points on Thursday, September 17. The Shenzhen Component Index closed down 44.84 points, or 0.33%, at 13409.91 points on Thursday, September 17. The CSI 300 Index closed down 20.11 points, or 0.45%, at 4460.16 points on Thursday, September 17. The ChiNext Index closed down 13.16 points, or 0.4%, at 3298.31 points on Thursday, September 17. The STAR Market 50 Index closed down 9.9 points, or 0.61%, at 1606.29 points on Thursday, September 17.