Core Insights - The top three stocks with net institutional purchases on August 18 are Zhinan Zhen, Dazhihui, and Tenglong Co., with net purchases of 385 million, 234 million, and 227 million respectively [1][2] - A total of 44 stocks appeared on the trading list, with 23 showing net institutional purchases and 21 showing net institutional sales [1] - The top three stocks with net institutional sales are Quzhou Development, Yingweike, and Nanya New Materials, with net outflows of 703 million, 241 million, and 151 million respectively [1][4] Institutional Purchases - Zhinan Zhen had a price increase of 14.64% with a net institutional purchase of 385.02 million [2] - Dazhihui saw a price increase of 10.03% with a net institutional purchase of 233.88 million [2] - Tenglong Co. experienced a price increase of 3.82% with a net institutional purchase of 227.44 million [2] Institutional Sales - Quzhou Development had a price decrease of 2.55% with a net institutional sale of 703 million [4] - Yingweike experienced a price increase of 10.00% but had a significant net institutional sale of 241 million [4] - Nanya New Materials saw a price increase of 20.00% but faced a net institutional sale of 151 million [4]

Summary of Key Points Core Viewpoint - On August 11, institutional investors showed significant activity in the stock market, with notable net purchases and sales across various companies. Group 1: Institutional Net Purchases - The top three stocks with the highest net purchases by institutions were Hengbao Co., Ltd. (1.20 billion), Chaojie Co., Ltd. (1.11 billion), and Innovation Medical (704 million) [1][2] - A total of 37 stocks were involved in institutional trading, with 21 stocks experiencing net purchases and 16 stocks facing net sales [1] Group 2: Institutional Net Sales - The top three stocks with the highest net sales by institutions were Ningbo Yunsheng (3.07 billion), Zhongxin Fluorine Materials (1.55 billion), and Dongxin Co., Ltd. (906 million) [1][4] - The net outflow amounts for these stocks indicate a significant sell-off by institutional investors [4]

Group 1 - The top three stocks with net institutional purchases on August 5 are Dongjie Intelligent, Xinhang New Materials, and Gongchuang Lawn, with net purchase amounts of 209 million, 84.8 million, and 63.1 million respectively [1][2] - On the same day, a total of 34 stocks appeared on the trading list, with 18 stocks showing net institutional purchases and 16 stocks showing net institutional sales [1][2] - The top three stocks with net institutional sales are Anglikang, Chenxin Pharmaceutical, and Shanhe Intelligent, with net outflow amounts of 116 million, 74.2 million, and 51.3 million respectively [1][4] Group 2 - Dongjie Intelligent experienced a daily increase of 20.01%, while Xinhang New Materials increased by 19.99%, and Gongchuang Lawn decreased by 2.98% [2] - Other notable stocks with significant net institutional purchases include Beifang Changlong with 52 million and Innovation Medical with 50.9 million [2] - Stocks with net institutional sales also include Chengxin Pharmaceutical with a decrease of 6.65% and Anglikang with a decrease of 9.46% [4]