Group 1 - On January 7, 21 companies were investigated by institutions, with 19 of them being attended by funds, highlighting a strong interest in specific companies like Chaojie Co., Shunhao Co., and Dongfang Shenghong [1][2] - Chaojie Co. received the most attention, with 27 funds participating in its investigation, while Shunhao Co. and Dongfang Shenghong had 18 and 13 funds respectively [1][3] - The companies investigated belong to various sectors, with the electronics and machinery equipment industries having the highest representation, each with 3 companies [1] Group 2 - Among the companies investigated, 3 have a total market capitalization exceeding 500 billion yuan, with BOE Technology Group being one of them, while 8 companies have a market cap below 100 million yuan [1] - In terms of market performance, 14 out of the investigated stocks increased in value over the past 5 days, with the highest gains seen in Pulite, Shunhao Co., and Guanglian Aviation, which rose by 38.07%, 20.57%, and 13.49% respectively [1][2] - Conversely, 4 stocks experienced declines, with the largest drops recorded by Binglun Environment, Haixia Co., and Dongfang Shenghong, which fell by 11.15%, 10.70%, and 2.09% respectively [1]