水产养殖板块涨幅居前，16位基金经理发生任职变动

Market Performance - On July 30, A-shares showed mixed performance with the Shanghai Composite Index rising by 0.17% to 3615.72 points, while the Shenzhen Component Index fell by 0.77% to 11203.03 points, and the ChiNext Index decreased by 1.62% to 2367.68 points [1] Fund Manager Changes - In the past 30 days (June 30 - July 30), a total of 443 fund managers changed positions across various funds, with 10 announcements made on July 30 alone [3] - Reasons for fund manager departures included work changes (2 managers), personal reasons (2 managers), and product expiration (1 manager) [3] - Notable fund managers include Yu Peng from Fortune Fund, managing assets worth 287 million yuan, with a top-performing fund yielding a 71.20% return over 7 years and 250 days [3] New Fund Managers - New fund manager Cai Chengfeng from Harvest Fund manages assets totaling 613 million yuan, with a top-performing fund achieving a 186.53% return over 3 years and 54 days [4] Fund Research Activity - Fortune Fund led in company research with 47 companies surveyed, followed by Bosera Fund and Southern Fund, each with 44 companies, and Huaxia Fund with 43 companies [6] - The most researched industry was communication equipment with 193 surveys, followed by chemical pharmaceuticals with 158 [6] Recent Stock Focus - The most focused stock in the past month was Zhongji Xuchuang in the optical communication module sector, with 75 fund management companies participating in its research [6] - In the past week (July 23 - July 30), Haida Group in the feed industry was the most researched company, with 45 fund institutions involved [7]