Data treasure statistics show that in the past 5 trading days, about 156 listed companies in Shanghai and Shenzhen have been investigated by institutions. In the list of institutional surveys, a total of 47 companies were surveyed by more than 20 institutions. Ronbay Technology has attracted the most attention, with 518 institutions participating in the survey; Tibet Mining has been investigated by 223 institutions, ranking second in the list; Yongxing Materials and Puluo Pharmaceutical have been investigated by 118 and 96 institutions respectively. In terms of the number of institutional surveys, the research of mining institutions in Tibet is the most intensive, and a total of 5 institutional surveys have been obtained. ChaoHongji, Sai Microelectronics and other institutions are also more intensive, and they have been investigated by institutions 4 times and 3 times respectively.