Group 1 - On July 21, a total of 13 companies were investigated by institutions, with 8 companies being surveyed by funds, highlighting a significant interest in Zhejiang Fu Holdings, which had 14 participating funds [1] - Other companies that attracted attention included Jieya Co., which had 9 funds participating, and Chutianlong, which had 6 funds involved in the survey [1] - Among the surveyed companies, 4 were from the Shenzhen main board and 4 from the ChiNext board, indicating a balanced interest across different market segments [2] Group 2 - The total market capitalization of the surveyed companies included 4 with a market cap of less than 10 billion yuan, specifically Jieya Co., Yuningwei, and Aidi Te [2] - In terms of market performance, 7 out of the surveyed stocks increased in value over the past 5 days, with North Chemical Co. leading at a rise of 32.77%, followed by Suzhou Tianmai at 23.93% and Zhejiang Fu Holdings at 11.48% [2] - Only one stock, Chutianlong, experienced a decline, with a drop of 6.85% [2] Group 3 - Among the surveyed companies, only 2 released half-year performance forecasts, with one company expecting an increase in net profit [2] - North Chemical Co. is projected to have the highest net profit growth, with an expected median net profit of 105 million yuan, representing a year-on-year increase of 201.48% [2]