博源化工股价连续3天下跌累计跌幅5.53%，南方基金旗下1只基金持3867.19万股，浮亏损失1430.86万元

Group 1 - The core viewpoint of the news is that Boyuan Chemical's stock has experienced a decline, with a 5.53% drop over the last three days, closing at 6.32 CNY per share on September 3, with a total market capitalization of 23.502 billion CNY [1] - Boyuan Chemical's main business includes the production and sales of coal, methanol, fertilizers, soda ash, and sodium bicarbonate, with revenue composition being 60.01% from soda ash, 25.08% from urea, 12.88% from sodium bicarbonate, and 1.56% from other products [1] - The company is located in Ordos City, Inner Mongolia, and was established on January 23, 1997, with its listing date on January 31, 1997 [1] Group 2 - Southern Fund's Southern CSI 500 ETF (510500) is among the top ten circulating shareholders of Boyuan Chemical, having increased its holdings by 5.2159 million shares in the second quarter, totaling 38.6719 million shares, which represents 1.17% of the circulating shares [2] - The Southern CSI 500 ETF has incurred a floating loss of approximately 3.4805 million CNY today, with a total floating loss of 14.3086 million CNY during the three-day decline [2] - The fund was established on February 6, 2013, with a current scale of 113.438 billion CNY, achieving a year-to-date return of 23.14% and a one-year return of 55.04% [2]