医疗服务板块1月16日跌2.51%，迪安诊断领跌，主力资金净流出25.83亿元

Core Viewpoint - The medical services sector experienced a decline of 2.51% on January 16, with Dean Diagnostics leading the drop. The Shanghai Composite Index closed at 4101.91, down 0.26%, while the Shenzhen Component Index closed at 14281.08, down 0.18% [1]. Group 1: Stock Performance - Dean Diagnostics (300244) saw a significant drop of 12.86%, closing at 25.27, with a trading volume of 1.061 million shares and a transaction value of 2.816 billion [2]. - Other notable declines included Hongbo Pharmaceutical (301230) down 11.61% to 46.50, and New Mileage (002219) down 10.00% to 2.34 [2]. - Conversely, Jin Kai Sheng Song (301509) increased by 2.15% to 38.43, with a transaction value of 196 million [1]. Group 2: Capital Flow - The medical services sector experienced a net outflow of 2.583 billion from institutional investors, while retail investors saw a net inflow of 2.892 billion [2]. - The capital flow data indicates that major stocks like Wu Yi Kang (603259) had a net inflow of 127 million from retail investors, despite a net outflow of 469 million from institutional investors [3]. - Other stocks such as Baihua Pharmaceutical (600721) and Hongbo Pharmaceutical (301230) also showed mixed capital flows, with varying degrees of net inflows and outflows from different investor types [3].