Group 1 - The biopharmaceutical sector increased by 0.18% on December 25, with Jindike leading the gains [1] - The Shanghai Composite Index closed at 3959.62, up 0.47%, while the Shenzhen Component Index closed at 13531.41, up 0.33% [1] - Key stocks in the biopharmaceutical sector showed various performance, with Jindike (688670) rising by 4.66% to a closing price of 22.45 [1] Group 2 - The biopharmaceutical sector experienced a net outflow of 307 million yuan from institutional investors, while retail investors saw a net inflow of 359 million yuan [2] - Notable declines included Te Bao Biological (688278), which fell by 3.14% to a closing price of 80.90 [2] - The trading volume and turnover for various stocks in the sector varied significantly, with Wan Ze Co. (000534) achieving a turnover of 488 million yuan [1][2] Group 3 - Jindike (688670) had a net inflow of 25.23 million yuan from institutional investors, while retail investors had a net outflow of 23.95 million yuan [3] - Other stocks like Zhi Xiang Jin Tai (688443) and Shen Zhou Cell (688520) also showed mixed net inflows and outflows from different investor categories [3] - The overall trend indicates a divergence in investor sentiment, with institutional investors pulling back while retail investors increased their positions [2][3]