Zheng Xing Xing Ye Ri Bao·2025-10-31 08:42Group 1: Market Performance - The biopharmaceutical sector increased by 3.42% compared to the previous trading day, with Sanofi leading the gains [1] - The Shanghai Composite Index closed at 3954.79, down 0.81%, while the Shenzhen Component Index closed at 13378.21, down 1.14% [1] Group 2: Stock Performance - Sanofi (688336) closed at 72.96, up 20.00% with a trading volume of 115,200 shares and a transaction value of 799 million [1] - Hualan Biological (301207) closed at 21.95, up 17.88% with a trading volume of 239,800 shares and a transaction value of 493 million [1] - Other notable stocks include Rongchang Bio (688331) up 11.80%, Jinke (688670) up 7.45%, and Kangchen Pharmaceutical (603590) up 7.38% [1] Group 3: Capital Flow - The biopharmaceutical sector saw a net inflow of 590 million from institutional investors, while retail investors experienced a net outflow of 268 million [2] - Major stocks like Rongchang Bio and Sanofi had significant net inflows from institutional investors, with 145 million and 14.1 million respectively [2] - Retail investors showed a net outflow in several stocks, including Sanofi and Hualan Biological, indicating a shift in investor sentiment [2]