Market Overview - As of October 30, the Shanghai Composite Index closed at 3986.90 points, down 29.43 points, a decrease of 0.73% [1] - The Shenzhen Component Index closed at 13532.13 points, down 159.26 points, a decrease of 1.16% [1] - The ChiNext Index closed at 3263.02 points, down 61.25 points, a decrease of 1.84% [1] Stock Performance - A total of 74 A-shares had a turnover rate exceeding 20%, with stocks like Marco Polo and Pingtan Development exceeding 50% turnover rate, indicating significant trading activity [1] - Marco Polo (stock code: 001386) closed at 28.50 yuan with a turnover rate of 59.18% and an increase of 5.48% [2] - Pingtan Development (stock code: 000592) closed at 6.44 yuan with a turnover rate of 51.22% and an increase of 6.62% [2] - Other notable stocks with high turnover rates include Tai Kai Ying (50.46% turnover, -9.74% change) and C Yi Cai-U (49.36% turnover, +12.15% change) [2] Additional Notable Stocks - Chao Ying Electronics (stock code: 603175) had a turnover rate of 48.39% and a decrease of 5.76% [2] - Hai Ke Xin Yuan (stock code: 301292) closed at 30.80 yuan with a turnover rate of 47.58% and an increase of 11.15% [2] - C Bi Bei Te-U (stock code: 688759) had a turnover rate of 47.32% and an increase of 9.29% [2] Summary of Turnover Rates - The data indicates a trend of high trading activity in certain stocks, with several companies experiencing significant changes in their stock prices alongside high turnover rates [1][2][3]