Market Overview - The professional services sector declined by 1.7% on February 2, with Zhonggang Tianyuan leading the drop [1] - The Shanghai Composite Index closed at 4015.75, down 2.48%, while the Shenzhen Component Index closed at 13824.35, down 2.69% [1] Stock Performance - Notable gainers included: - Electric Science Institute (300215) with a closing price of 9.68, up 19.95% and a trading volume of 976,400 shares, totaling 892 million yuan [1] - Xigao Institute (688334) closed at 25.08, up 2.96% with a trading volume of 135,200 shares, totaling 344 million yuan [1] - Major decliners included: - Zhonggang Tianyuan (002057) closed at 10.32, down 4.88% with a trading volume of 209,200 shares, totaling 221 million yuan [2] - Shengke Nano (688757) closed at 30.85, down 4.70% with a trading volume of 19,900 shares, totaling 62 million yuan [2] Capital Flow - The professional services sector saw a net inflow of 233 million yuan from institutional investors, while retail investors experienced a net outflow of 157 million yuan [2] - The detailed capital flow for selected stocks showed: - Electric Science Institute had a net inflow of 258 million yuan from institutional investors, but a net outflow of 148 million yuan from retail investors [3] - Xigao Institute had a net inflow of 36.72 million yuan from institutional investors, with a net outflow of 2.67 million yuan from retail investors [3]