April is a key month for the disclosure of annual reports and first quarter reports of A-share listed companies, and public fund institutions are conducting intensive research. According to the latest data from the Public Fund Ranking Network, a total of 162 public fund institutions conducted research on A-share listed companies in April, covering 732 stocks in 30 Shenwan first-level industries, with a total research frequency of 9,796 times, a surge of 129.47% from March, setting a new high for research activity this year. The two major industries of electronics and pharmaceuticals and biology are far ahead in research data. Among them, the electronics industry alone occupied four seats in the top ten stocks with the most public fund research in April, with Luxshare Precision ranking first, and Shanghai Electric Co., Ltd., Lanqi Technology and Anker Innovations and other electronic industry stocks being the most frequently researched. In the pharmaceutical field, stocks such as Huadong Medicine, Aibo Medical, Aupuma, and Kaili Medical have attracted attention. Among the public fund research stocks in April, Hongbaoli, a stock in the basic chemical industry, led the way with a 104.27% increase, becoming the biggest dark horse of the month. Lintai New Materials, a stock in the automotive industry, followed closely behind, with its share price rising by 84.94% in April. Stocks in the pharmaceutical and biological industry performed well, with Yipinhong and Sinovac Pharmaceutical both among the top ten stocks with share price increases of 56.20% and 55.19%, respectively.