Zheng Xing Xing Ye Ri Bao·2025-12-19 09:11Group 1 - The medical device sector increased by 0.56% on December 19, with Kangzhong Medical leading the gains [1] - The Shanghai Composite Index closed at 3890.45, up 0.36%, while the Shenzhen Component Index closed at 13140.22, up 0.66% [1] - Notable gainers in the medical device sector included Kangzhong Medical, which rose by 7.36% to a closing price of 44.90, and Rendu Biotech, which increased by 6.78% to 50.40 [1] Group 2 - The medical device sector experienced a net inflow of 3.65 million yuan from institutional investors, while retail investors saw a net inflow of 15 million yuan [2] - Major stocks with significant net inflows included Rejing Bio with 49.71 million yuan and Yuyue Medical with 43.84 million yuan [3] - Conversely, retail investors showed net outflows in several stocks, including Yuyue Medical and Mairui Medical, indicating a mixed sentiment in the market [3]