
Group 1 - On September 11, a total of 33 stocks were involved with institutional investors, with 15 showing net buying and 18 showing net selling [1] - The top three stocks with the highest net buying by institutions were Dongshan Precision (2.38 billion), Beifang Changlong (1.02 billion), and Sanwei Communication (55.14 million) [1] - The top three stocks with the highest net selling by institutions were Haiguang Information (4.38 billion), Luxshare Precision (4.21 billion), and Huagong Technology (1.24 billion) [1] Group 2 - Significant percentage changes were observed in various stocks, with Dazhu CNC showing an increase of 18.38% and Luxshare Precision experiencing a decrease of 10.00% [3][4] - Other notable stocks included Xizhuang Co. with a 5.98% increase and Huagong Technology with a 10.00% decrease [3][4] - The overall trading activity indicates a mixed sentiment among institutional investors, with some stocks gaining while others faced significant sell-offs [1][3][4]