机构今日买入北京君正等16股，卖出海科新源1.42亿元

Summary of Key Points Core Viewpoint - On December 1, a total of 34 stocks were identified with institutional activity, with 16 stocks showing net buying and 18 stocks showing net selling by institutions [1] Institutional Buying - The top three stocks with the highest net buying by institutions were: - Beijing Junzheng with a net buying amount of 251 million [1] - Guangqi Technology with a net buying amount of 147 million [1] - Guangji Pharmaceutical with a net buying amount of 77.21 million [1] Institutional Selling - The top three stocks with the highest net selling by institutions were: - Haike Xinyuan with a net outflow amount of 142 million [1] - Jereh with a net outflow amount of 128 million [1] - Guanghetong with a net outflow amount of 85.12 million [1]