生物制品板块1月19日跌0.28%，智飞生物领跌，主力资金净流出4.36亿元

Market Overview - The biopharmaceutical sector experienced a decline of 0.28% on January 19, with Zhifei Biological leading the drop [1] - The Shanghai Composite Index closed at 4114.0, up 0.29%, while the Shenzhen Component Index closed at 14294.05, up 0.09% [1] Stock Performance - Notable gainers in the biopharmaceutical sector included: - Wanzhe Co., Ltd. (Code: 000534) with a closing price of 25.14, up 10.02% and a trading volume of 266,100 shares, totaling 646 million yuan [1] - Olin Biological (Code: 6168889) closed at 27.03, up 9.21% with a trading volume of 155,500 shares, totaling 423 million yuan [1] - Conversely, Zhifei Biological (Code: 300122) saw a significant decline, closing at 17.56, down 7.19% with a trading volume of 618,600 shares, totaling 1.102 billion yuan [2] Capital Flow - The biopharmaceutical sector experienced a net outflow of 436 million yuan from institutional investors, while retail investors saw a net inflow of 189 million yuan [2] - The top stocks by net inflow from institutional investors included: - Wanzhe Co., Ltd. with a net inflow of 57.34 million yuan, accounting for 8.88% of the total [3] - Kanghong Pharmaceutical (Code: 002773) with a net inflow of 49.52 million yuan, accounting for 11.48% [3]