专业服务板块12月9日跌0.01%，科锐国际领跌，主力资金净流出1642.85万元

Group 1 - The professional services sector experienced a slight decline of 0.01% on the previous trading day, with Core International leading the drop [1] - The Shanghai Composite Index closed at 3909.52, down 0.37%, while the Shenzhen Component Index closed at 13277.36, down 0.39% [1] - A detailed table of individual stock performance within the professional services sector is provided [1] Group 2 - In terms of capital flow, the professional services sector saw a net outflow of 16.4285 million yuan from main funds, while retail funds had a net inflow of 45.7083 million yuan, and individual investors experienced a net outflow of 29.2798 million yuan [2] - A detailed table of capital flow for individual stocks in the professional services sector is included [2]