海正生材股价跌5.07%，广发基金旗下1只基金位居十大流通股东，持有704.78万股浮亏损失542.68万元

Group 1 - The core viewpoint of the news is that Zhejiang Haizheng Biological Materials Co., Ltd. has experienced a significant decline in stock price, with a drop of 5.07% on September 19, bringing the total market value to 2.923 billion yuan and a cumulative decline of 7.72% over three consecutive days [1] - The company specializes in the research, production, and sales of polylactic acid, with its main business revenue composition being 78.55% from pure polylactic acid, 20.50% from modified polylactic acid, and 0.96% from other sources [1] - The stock's trading volume on the reporting day was 56.7391 million yuan, with a turnover rate of 3.08% [1] Group 2 - According to data from the top ten circulating shareholders, GF Fund's Guangfa Technology Innovation Mixed A Fund has entered the top ten shareholders, holding 7.0478 million shares, which accounts for 5.99% of the circulating shares [2] - The fund has incurred a floating loss of approximately 5.4268 million yuan today and a total floating loss of 8.9507 million yuan during the three-day decline [2] - Guangfa Technology Innovation Mixed A Fund has achieved a year-to-date return of 56.06% and a one-year return of 108.31%, ranking 687 out of 8172 and 428 out of 7980 in its category, respectively [2]