互联网医疗板块2月4日涨0%，益丰药房领涨，主力资金净流出19.28亿元

Group 1 - The core viewpoint of the article indicates that the internet healthcare sector experienced a slight increase of 0.0% on February 4, with Yifeng Pharmacy leading the gains [1] - The Shanghai Composite Index closed at 4102.2, reflecting an increase of 0.85%, while the Shenzhen Component Index closed at 14156.27, up by 0.21% [1] - The net capital flow in the internet healthcare sector showed a net outflow of 1.928 billion yuan from major funds, while retail investors contributed a net inflow of 1.255 billion yuan [1] Group 2 - The article provides a detailed breakdown of the capital flow within the internet healthcare sector, highlighting that speculative funds had a net inflow of 0.673 billion yuan [1] - The article includes a table summarizing the individual stock performance and capital flow within the internet healthcare sector, although specific stock details are not provided in the text [1]