Core Viewpoint - On October 21, a total of 34 stocks were involved with institutional investors, with 14 stocks showing net buying and 20 stocks showing net selling [1] Group 1: Institutional Net Buying - The top three stocks with the highest net buying by institutions were Huajian Group, Online and Offline, and Dayou Energy, with net buying amounts of 1.051 billion, 142 million, and 87.36 million respectively [1][2] - Huajian Group experienced a price increase of 10.00% [2] - Online and Offline saw a price increase of 14.72% [2] - Dayou Energy had a price increase of 10.06% [2] Group 2: Institutional Net Selling - The top three stocks with the highest net selling by institutions were Yuanjie Technology, Huilv Ecology, and Yunhan Chip City, with net outflow amounts of 263 million, 157 million, and 111.73 million respectively [1][3] - Yuanjie Technology experienced a price increase of 20.00% despite the net selling [3] - Huilv Ecology had a price increase of 10.03% [3] - Yunhan Chip City also saw a price increase of 20.00% [3]