龙虎榜丨机构今日买入这23股，抛售时空科技1.22亿元

Core Insights - On October 31, a total of 41 stocks appeared on the trading leaderboard, with 23 showing net institutional buying and 18 showing net institutional selling [1] Group 1: Institutional Buying - The top three stocks with the highest net institutional buying were Zejing Pharmaceutical, Shutai Shen, and Yongxing Materials, with net buying amounts of 207 million, 198 million, and 125 million respectively [1][2] - Other notable stocks with significant net institutional buying included Nuo Si Ge (105 million), Yi Fang Bio (87 million), and Tian Ji Co. (86 million) [2] Group 2: Institutional Selling - The top three stocks with the highest net institutional selling were Shikong Technology, Chuling Information, and Shangtai Technology, with net selling amounts of 122 million, 103 million, and 101 million respectively [1][3] - Additional stocks with notable net institutional selling included Zhong Tung Gao Xin (622 million), Ying Xin Development (424 million), and Si Wei Lie Control (298 million) [3][4]