Market Performance - On August 1, A-shares' three major indices collectively closed lower, with the Shanghai Composite Index down 0.37% at 3559.95 points, the Shenzhen Component Index down 0.17% at 10991.32 points, and the ChiNext Index down 0.24% at 2322.63 points [1] Fund Manager Changes - In the past 30 days (July 2 - August 1), a total of 424 fund managers have left their positions, with 18 announcements made on August 1 alone. The reasons for these changes include 4 managers leaving due to job changes and 1 due to personal reasons [3][4] - Notable fund managers who left include Wu Yi from multiple funds due to job changes, and Shi Xingtao who left for personal reasons [4][6] Fund Manager Performance - Current fund manager of Yongying Fund, Chu Kefa, manages assets totaling 7.271 billion yuan, with the highest return of 104.27% from the fund Yongying Medical Innovation Selected Mixed Fund A during his tenure [4] - New fund manager Wan Qiong from Bosera Fund manages assets totaling 52.773 billion yuan, with the highest return of 283.18% from the Bosera S&P 500 ETF over nearly 10 years [5] Fund Research Activity - In the past month, the most active fund company in conducting company research was Fuguo Fund, which researched 48 listed companies, followed by Bosera Fund and Huaxia Fund with 45 and 44 companies respectively [6][7] - The most researched industry was communication equipment, with 193 research instances, followed by the chemical pharmaceutical industry with 158 instances [6][7] Recent Stock Research - The most researched stock in the past month was Defu Technology, with 79 fund management companies participating in the research, followed by Zhongji Xuchuang and Xinyi Sheng with 75 and 66 companies respectively [7][8] - In the last week (July 25 - August 1), Defu Technology remained the most researched stock, with 79 fund institutions involved, while other notable stocks included Haida Group and Shenghong Technology [8][9]