医疗服务板块10月17日跌2.76%，三博脑科领跌，主力资金净流出11.81亿元

Core Viewpoint - The medical services sector experienced a decline of 2.76% on October 17, with Sanbo Brain Science leading the drop. The Shanghai Composite Index closed at 3839.76, down 1.95%, while the Shenzhen Component Index closed at 12688.94, down 3.04% [1]. Summary by Category Market Performance - The medical services sector saw significant declines, with Sanbo Brain Science falling by 7.13% to a closing price of 58.96. Other notable declines included He Yuan Biological (-5.26%), Jiu Zhou Pharmaceutical (-4.70%), and Xin Li Cheng (-4.49%) [2]. - In contrast, Hai Te Biological and Cheng Da Pharmaceutical were among the few gainers, with increases of 6.23% and 3.15%, respectively [1][2]. Trading Volume and Value - The trading volume for Hai Te Biological reached 232,100 shares with a transaction value of 850 million yuan, while Cheng Da Pharmaceutical had a volume of 61,000 shares and a value of 200 million yuan [1]. - The overall medical services sector saw a net outflow of 1.181 billion yuan from major funds, while retail investors contributed a net inflow of 939 million yuan [2]. Fund Flow Analysis - Major funds showed a net inflow of 171 million yuan into Aier Eye Hospital, while other companies like Hai Te Biological and Cheng Da Pharmaceutical experienced mixed fund flows [3]. - Retail investors showed a significant net inflow into several stocks, indicating a potential shift in market sentiment despite the overall sector decline [3].