Group 1 - In the past month (from July 13 to August 12), 20 companies listed on the Beijing Stock Exchange (BSE) were investigated by institutions, with Minshida being the most notable, receiving attention from 96 institutions [1] - The types of institutions conducting the research included 16 brokerages, 9 funds, 8 private equity firms, 2 insurance companies, and 1 overseas institution [1] - The companies that received the most institutional attention after Minshida were Tonghui Electronics, Taihu Snow, and Huaguang Yuanhai, with 65, 36, and 20 institutions participating in their investigations, respectively [1] Group 2 - The average stock price of the investigated BSE companies increased by 12.10% over the past month, with 13 stocks rising, notably Hengli Drilling, Guangxin Technology, and Sanwei Equipment, which saw increases of 144.04%, 42.69%, and 18.62% respectively [2] - The average daily turnover rate for the investigated companies was 7.26%, with Hengli Drilling, Wanyuantong, and Guangxin Technology leading at 21.64%, 16.25%, and 15.26% respectively [2] - As of August 12, the average market capitalization of all companies on the BSE was 3.159 billion yuan, while the average market capitalization of the investigated companies was 3.927 billion yuan, with the largest market caps belonging to Xingtum Kexun, Guangxin Technology, and Binhang Technology [2] Group 3 - The table of investigated companies includes details such as the number of institutions involved, the number of investigations, latest closing prices, percentage changes, and industry classifications [2][3] - Notable companies in the table include Minshida, Tonghui Electronics, and Hengli Drilling, with respective closing prices of 43.28 yuan, 26.06 yuan, and 48.71 yuan, and percentage changes of -2.30%, 2.96%, and 144.04% [2][3]