Zheng Xing Xing Ye Ri Bao·2025-08-20 08:41Market Overview - On August 20, the professional services sector rose by 1.23%, led by Shengke Nano, while the Shanghai Composite Index closed at 3766.21, up 1.04%, and the Shenzhen Component Index closed at 11926.74, up 0.89% [1]. Stock Performance - Shengke Nano (688757) closed at 35.80, with a significant increase of 12.40% and a trading volume of 74,600 shares, amounting to a transaction value of 248 million yuan [1]. - Lihe Kexin (002243) saw a rise of 7.57%, closing at 9.24 with a trading volume of 623,300 shares and a transaction value of 562 million yuan [1]. - Other notable performers included Shicun Testing (301228) with a 4.06% increase, closing at 27.15, and Guodian Measurement (002967) with a 2.78% increase, closing at 21.81 [1]. Capital Flow - The professional services sector experienced a net outflow of 35.42 million yuan from institutional investors, while retail investors saw a net outflow of 45.10 million yuan. Conversely, speculative funds recorded a net inflow of 80.52 million yuan [2][3]. - Lihe Kexin (002243) attracted a net inflow of 75.41 million yuan from institutional investors, while it faced a net outflow of 59.20 million yuan from retail investors [3]. - Guodian Measurement (002967) also saw a net inflow of 38.59 million yuan from institutional investors, with retail investors experiencing a net outflow of 16.08 million yuan [3].