Market Overview - The engineering consulting services sector increased by 0.38% on October 20, with Zhongda An leading the gains [1] - The Shanghai Composite Index closed at 3863.89, up 0.63%, while the Shenzhen Component Index closed at 12813.21, up 0.98% [1] Top Gainers - Zhongda An (300635) closed at 14.25, up 3.64% with a trading volume of 42,000 shares and a turnover of 60.08 million yuan [1] - Taiji Industry (600667) closed at 8.10, up 3.05% with a trading volume of 1.1612 million shares and a turnover of 947 million yuan [1] - Zhubo Design (300564) closed at 16.28, up 2.91% with a trading volume of 32,300 shares and a turnover of 52.18 million yuan [1] Top Losers - Guangzi International (920892) closed at 16.58, down 3.04% with a trading volume of 18,400 shares and a turnover of 30.87 million yuan [2] - Youan Design (300983) closed at 23.89, down 2.53% with a trading volume of 35,200 shares and a turnover of 83.69 million yuan [2] - Huajian Group (600629) closed at 37.21, down 2.34% with a trading volume of 685,700 shares and a turnover of 254 million yuan [2] Fund Flow Analysis - The engineering consulting services sector experienced a net outflow of 198 million yuan from institutional investors, while retail investors saw a net inflow of 156 million yuan [2] - The sector's overall fund flow indicates a mixed sentiment, with institutional investors withdrawing capital while retail investors are actively buying [2][3] Individual Stock Fund Flow - Taiji Industry (600667) had a net inflow of 33.63 million yuan from institutional investors, while retail investors had a net outflow of 13.23 million yuan [3] - Tongji Technology (600846) saw a net inflow of 30.75 million yuan from institutional investors, with a significant net outflow from retail investors of 28.50 million yuan [3] - Zhongjian Design (600720) had a net inflow of 8.43 million yuan from institutional investors, while retail investors experienced a net outflow of 3.47 million yuan [3]