Yuan Da Xin Xi·2025-10-20 11:27Group 1: Institutional Research on Popular Companies - The top twenty companies with the highest number of institutional research visits in the past 30 days include Rongbai Technology, Jingzhida, Shouchuang Environmental Protection, World, and Jiufeng Energy [12] - In the last five days, the most researched companies were Dike Co., Jiuzhou Pharmaceutical, Aipeng Medical, Juzan Optoelectronics, and LiuGong [13] - Among the top twenty companies in the past 30 days, 11 had ten or more rating agencies, with Huafeng Measurement and Huichuan Technology expected to see significant growth in net profit for the first half of 2025 compared to 2024 [12] Group 2: Major Shareholder Increase in A-Share Companies - From October 13 to October 17, 2025, six A-share companies announced significant shareholder increases, with Luyin Investment and Beichen Industrial planning to increase their holdings by amounts exceeding 1% of the latest market value [17] - From January 1 to October 17, 2025, a total of 285 companies announced shareholder increases, with 81 having ten or more rating agencies, and 20 of these companies planning increases exceeding 1% of their latest market value [19] Group 3: A-Share Company Buyback Situation - From October 13 to October 17, 2025, 72 companies announced buyback progress, with 12 having ten or more rating agencies, and four companies expected to have buyback amounts exceeding 1% of their market value [24] - From January 1 to October 17, 2025, 1,768 companies announced buyback progress, with 383 having ten or more rating agencies, and 89 companies expected to have buyback amounts exceeding 1% of their market value [27]