After the Spring Festival, as the market sentiment warmed and the epidemic situation gradually dissipated, institutional investors set off a round of "research fever", especially the resumption of offline research. Some listed companies were gathered by dozens of institutions for on-site research. 13 listed companies have been investigated by more than 100 institutions Wind data shows that since February this year, 652 listed companies have been investigated by institutions, and Han's Laser and Suwen Power have been investigated for 23 and 18 times respectively; Topbond, Changshu Bank and Meirui Xincai were investigated 16 times, 11 times and 10 times respectively; Huichuan Technology, Zuoli Pharmaceutical, Aotuo Electronics, Sunong Bank, Yunnan Copper, Yingweiteng, etc. were investigated 9 times. It is noteworthy that the long-overdue offline research has also opened the curtain. Taking Han's Laser as an example, half of the 23 institutional investigations were on-site meetings, and almost all of them were on-site investigations after February 20; Su Wen Power has received 18 surveys, all of which are on-site meetings. At the most, 37 institutions have come to the site for survey. Since February 1, almost every day, there have been 1-2 institutional surveys. In terms of the number of research institutions, 13 listed companies have been surveyed by more than 100 institutions. Huichuan Technology, Tomcat and Suwen Power ranked the top three, which are the "sweet cakes" in the eyes of institutions. There are 162, 157 and 154 research institutions respectively. Take Tom Cat, whose share price has soared recently, as an example. Since February 10, the company has been investigated seven times, four of which were conducted by institutions. The most concerned issues of the organization are the application prospect and product form of the company's application of ChatGPT technology. The company said that the company's access to ChatGPT's API for voice interaction product development is currently in the early stage of testing, and the company aims to verify the feasibility of integrated development of relevant technologies and company products. Since February, Tom's share price has risen by more than 50%. In addition, there are more than 100 institutions surveyed by Chow Tai Sang, Wen Shi, Hanzhong Precision Machinery, Kede CNC, Kaimei Gas, Chuanhuan Technology, Yiheda, Qi'anxin, Xianju Pharmaceutical and Lizhu Group. Gao Yi and Xi Tai are the most diligent in private placement research. As the epidemic fades away, offline activities continue to resume. The major institutions rooted in Beijing, Shanghai and Shenzhen continue to go out of the door, setting off a round of "research fever" and actively preparing for investment in the new year. Compared with other research institutions, the research enthusiasm of 10 billion private placement is also very high. Among them, Gao Yi and Xi Tai have investigated more than 40 times since February, both of which are 43 times. They are the "most diligent" private placers. The three stocks with the highest attention in Gao Yi's research are Bank of Hangzhou, Huichuan Technology and Guanghetong; The highest attention of Xitai's research is Guangxin Materials, Tom Cat and Kangtai Biology. In addition, more than 25 surveys have been conducted on the 10 billion private placements of Danshui Spring, Qushi, Dunhe, Juming, Ruijun, Panjing and Yude. After the market warmed up and the sale of 10 billion private placement new products warmed up, under the background of the market sentiment warmed up, in addition to intensive research, star private placement also actively launched new products, and the sales of private placement increased day by day. near