工程咨询服务板块8月21日涨0.46%，华建集团领涨，主力资金净流出2259.85万元

Group 1 - The engineering consulting services sector increased by 0.46% on August 21, with Huajian Group leading the gains [1] - The Shanghai Composite Index closed at 3771.1, up 0.13%, while the Shenzhen Component Index closed at 11919.76, down 0.06% [1] - Huajian Group's stock price rose by 7.01% to 14.50, with a trading volume of 791,500 shares and a transaction value of 1.119 billion [1] Group 2 - The engineering consulting services sector experienced a net outflow of 22.5985 million from institutional investors, while retail investors saw a net outflow of 72.4343 million [2] - The sector had a net inflow of 95.0328 million from speculative funds [2] - The stock performance of various companies showed mixed results, with some experiencing significant declines, such as Jianda Heceng, which fell by 4.94% [2] Group 3 - Huajian Group had a net inflow of 96.345 million from institutional investors, while retail investors had a net outflow of 73.1036 million [3] - Other companies like Sheyan Institute and New City also saw net inflows from institutional and speculative funds, but faced outflows from retail investors [3] - The data indicates a trend where institutional investors are favoring certain stocks while retail investors are withdrawing [3]