Market Overview - As of September 18, the Shanghai Composite Index closed at 3831.66 points, down 44.68 points, a decrease of 1.15% [1] - The Shenzhen Component Index closed at 13075.66 points, down 139.80 points, a decrease of 1.06% [1] - The ChiNext Index closed at 3095.85 points, down 51.49 points, a decrease of 1.64% [1] Stock Performance - A total of 110 A-shares had a turnover rate exceeding 20% on September 18, with Boshang Optoelectronics reaching a turnover rate of over 50% [1] - The top stocks by turnover rate included: - Boshang Optoelectronics (301421) with a closing price of 94.50 yuan and a turnover rate of 51.13%, increasing by 7.24% [1] - Lihexing (301013) with a closing price of 29.23 yuan and a turnover rate of 48.00%, increasing by 19.99% [1] - Haoen Automotive Electronics (301488) with a closing price of 209.00 yuan and a turnover rate of 43.99%, decreasing by 4.14% [1] Notable Stocks - Other notable stocks with high turnover rates included: - Huasheng Tiancheng (600410) with a turnover rate of 43.95% and an increase of 6.82% [1] - Huanxin Precision (603370) with a turnover rate of 41.93% and an increase of 5.58% [1] - Chuanrun Co., Ltd. (002272) with a turnover rate of 40.62% and an increase of 9.99% [1] Additional Stock Insights - Stocks with significant price movements included: - Dezhong Automobile (838030) with a turnover rate of 32.88% and an increase of 30.00% [1] - Xianyang Tourism (000610) with a turnover rate of 25.75% and an increase of 6.69% [2] - Aifenda (301575) with a turnover rate of 29.37% and a decrease of 1.10% [2]