医药商业板块1月21日跌0.37%，鹭燕医药领跌，主力资金净流出2.54亿元

Market Overview - The pharmaceutical commercial sector experienced a decline of 0.37% on January 21, with Luyuan Pharmaceutical leading the drop [1] - The Shanghai Composite Index closed at 4116.94, up 0.08%, while the Shenzhen Component Index closed at 14255.12, up 0.7% [1] Stock Performance - Notable gainers in the pharmaceutical commercial sector included: - Guofa Co., Ltd. (600538) with a closing price of 7.04, up 2.47% and a trading volume of 179,300 shares [1] - Jianfa Zhixin (301584) closed at 31.02, up 1.54% with a trading volume of 45,500 shares [1] - Yaoyigou (300937) closed at 35.56, up 1.40% with a trading volume of 32,800 shares [1] - Other stocks with minor gains included Dacilin (603233), Baiyang Pharmaceutical (301015), and Rundar Medical (603108) [1] Capital Flow - The pharmaceutical commercial sector saw a net outflow of 254 million yuan from institutional investors, while retail investors had a net inflow of 313 million yuan [2] - The top stocks by net inflow from retail investors included: - Zhejiang Zhenyuan (000705) with a net inflow of 1.67 million yuan [3] - Rundar Medical (603108) with a net outflow of 50.04 million yuan [3] Individual Stock Analysis - Rundar Medical (603108) had a net inflow of 29.30 million yuan from institutional investors, but a significant outflow from retail investors [3] - Guofa Co., Ltd. (600538) experienced a net inflow of 8.32 million yuan from institutional investors, while retail investors showed a minor inflow [3] - Baiyang Pharmaceutical (301015) had a net inflow of 8.21 million yuan from institutional investors, but a net outflow from retail investors [3]