Zheng Xing Xing Ye Ri Bao·2025-08-21 08:30Market Overview - On August 21, the medical device sector rose by 1.02% compared to the previous trading day, with Meihao Medical leading the gains [1] - The Shanghai Composite Index closed at 3771.1, up 0.13%, while the Shenzhen Component Index closed at 11919.76, down 0.06% [1] Top Performers - Meihao Medical (301363) closed at 23.40, up 18.00% with a trading volume of 530,200 shares and a transaction value of 1.182 billion [1] - Haooubo (688656) closed at 125.62, up 8.42% with a trading volume of 32,300 shares and a transaction value of 403 million [1] - Rejing Bio (688068) closed at 237.62, up 6.80% with a trading volume of 25,200 shares and a transaction value of 588 million [1] Underperformers - Sainuo Medical (688108) closed at 34.22, down 8.21% with a trading volume of 790,800 shares and a transaction value of 273.7 million [2] - Linoyoubao (301188) closed at 19.86, down 6.23% with a trading volume of 296,400 shares and a transaction value of 596 million [2] - Shangrong Medical (002551) closed at 4.68, down 5.45% with a trading volume of 975,900 shares and a transaction value of 464 million [2] Capital Flow - The medical device sector experienced a net outflow of 766 million from institutional investors, while retail investors saw a net inflow of 903 million [2][3] - Major stocks like Meihao Medical and Mindray Medical (300760) had significant net inflows from retail investors, indicating strong retail interest despite overall institutional outflows [3]