Group 1 - In the past month (from July 15 to August 14), 20 companies listed on the Beijing Stock Exchange (BSE) were investigated by institutions, with Minshida being the most notable, attracting 96 participating institutions [1][2] - The types of institutions conducting the research included 16 brokerages, 9 funds, 9 private equity firms, 3 insurance companies, and 2 overseas institutions [1] - The companies that received the most attention after Minshida were Tonghui Electronics, Huami New Materials, and Taihu Snow, with 65, 55, and 40 participating institutions respectively [1] Group 2 - The most frequently investigated companies included Taihu Snow, Hanwei Technology, and Hengli Drilling Tools, each receiving two rounds of institutional research [2] - On average, the companies that were investigated saw an increase of 11.22% in their stock prices over the month, with Hengli Drilling Tools, Huami New Materials, and Guangxin Technology leading the gains at 139.87%, 56.60%, and 31.30% respectively [2] - The average market capitalization of all companies on the BSE was 3.092 billion yuan, while the average market capitalization of the investigated companies was 3.988 billion yuan [2] Group 3 - The average daily turnover rate for the investigated companies was 7.40%, with Hengli Drilling Tools, Wanyuantong, and Guangxin Technology having the highest turnover rates at 21.71%, 16.81%, and 14.96% respectively [2] - A detailed list of investigated companies includes Minshida, Tonghui Electronics, Huami New Materials, and others, with their respective stock prices and percentage changes noted [2][3]