万马股份股价跌5.05%，南方基金旗下1只基金位居十大流通股东，持有742.4万股浮亏损失690.43万元

Group 1 - The core point of the news is that Wanma Co., Ltd. experienced a decline in stock price by 5.05%, with the current share price at 17.48 yuan and a total market capitalization of 17.73 billion yuan [1] - Wanma Co., Ltd. is primarily engaged in the research, production, and sales of electric power cables, with its main business revenue composition being 68.11% from electric power products, 28.63% from polymer materials, 1.70% from communication products, and 1.56% from trade, services, and others [1] Group 2 - Among the top ten circulating shareholders of Wanma Co., Ltd., a fund under Southern Fund holds a position, specifically the Southern CSI 1000 ETF (512100), which reduced its holdings by 68,200 shares in the third quarter, now holding 7.424 million shares, representing 0.74% of circulating shares [2] - The Southern CSI 1000 ETF (512100) has a total scale of 76.63 billion yuan and has achieved a year-to-date return of 28.07%, ranking 1919 out of 4216 in its category [2]