专业服务板块9月1日跌0.4%，安邦护卫领跌，主力资金净流出3.07亿元

Core Viewpoint - The professional services sector experienced a decline of 0.4% on September 1, with Anbang Guard leading the drop, while the overall Shanghai Composite Index rose by 0.46% to close at 3875.53 [1]. Group 1: Market Performance - The Shanghai Composite Index closed at 3875.53, up 0.46% [1]. - The Shenzhen Component Index closed at 12828.95, up 1.05% [1]. - Anbang Guard's stock price fell by 5.68% to 53.93 [2]. Group 2: Individual Stock Performance - Lansheng Co. (600826) saw a price increase of 5.09%, closing at 12.18, with a trading volume of 513,800 shares and a turnover of 608 million yuan [1]. - Jianyan Institute (603183) increased by 2.76%, closing at 4.46, with a trading volume of 163,300 shares and a turnover of 72.36 million yuan [1]. - Shengke Nano (688757) rose by 2.62%, closing at 32.07, with a trading volume of 37,700 shares and a turnover of 120 million yuan [1]. - Anbang Guard (603373) led the decline with a drop of 5.68%, closing at 53.93, with a trading volume of 45,300 shares and a turnover of 245 million yuan [2]. Group 3: Capital Flow - The professional services sector experienced a net outflow of 307 million yuan from main funds, while retail investors saw a net inflow of 279 million yuan [2]. - Speculative funds had a net inflow of 28.52 million yuan into the professional services sector [2].