主力板块资金流出前10：半导体流出44.67亿元、互联网服务流出39.14亿元

Group 1 - The main market experienced a net outflow of 17.805 billion yuan in principal funds as of January 19, with significant withdrawals from various sectors [1] - The top ten sectors with the largest fund outflows included: Semiconductor (-4.467 billion yuan), Internet Services (-3.914 billion yuan), Communication Equipment (-3.685 billion yuan), Non-ferrous Metals (-2.369 billion yuan), Software Development (-2.266 billion yuan), Cultural Media (-1.494 billion yuan), Medical Services (-0.787 billion yuan), Specialized Equipment (-0.727 billion yuan), Consumer Electronics (-0.724 billion yuan), and Securities (-0.711 billion yuan) [1][3] Group 2 - The Medical Services sector saw a fund outflow of 0.787 billion yuan, indicating a negative change of -0.33% [3] - The Specialized Equipment sector experienced a fund outflow of 0.727 billion yuan, with a positive change of 0.63% [3] - The Consumer Electronics sector had a fund outflow of 0.724 billion yuan, reflecting a positive change of 0.4% [3] - The Securities sector recorded a fund outflow of 0.711 billion yuan, with a slight negative change of -0.07% [3]