Di Yi Cai Jing·2026-01-21 10:17Group 1 - On January 21, a total of 42 stocks were involved with institutional investors, with 25 stocks showing net buying and 17 stocks showing net selling [1] - The top three stocks with net buying by institutions were Zhongtung High-tech, Dazhu CNC, and ST Jiaao, with net buying amounts of 305 million, 279 million, and 240 million respectively [1][2] - The top three stocks with net selling by institutions were Tongfu Microelectronics, Hunan Silver, and Fengyuzhu, with net selling amounts of 125 million, 102 million, and 95.56 million respectively [1][3] Group 2 - Zhongtung High-tech had a price increase of 10.00% with a net buying amount of 30,504.10 million [2] - Dazhu CNC experienced a price increase of 20.00% with a net buying amount of 27,864.81 million [2] - ST Jiaao saw a price increase of 4.22% with a net buying amount of 23,952.02 million [2]