Sou Hu Cai Jing·2025-08-22 15:36Group 1 - Maanshan Iron & Steel Company Limited (Ma Steel) has experienced a decline in stock price for five consecutive trading days, with a cumulative drop of -4.62% [1] - Ma Steel is a subsidiary of China Baowu Steel Group, operating one A+H share listed company and one New Third Board listed company, with a steel production capacity of 23 million tons and approximately 22,000 employees [1] - Southern Fund's Southern CSI 500 ETF is among the top ten shareholders of Ma Steel, having reduced its holdings in the second quarter of this year [1] Group 2 - The Southern CSI 500 ETF has achieved a year-to-date return of 20.73%, ranking 1435 out of 3420 in its category [2] - The fund's performance over various periods includes a 3.89% increase over the past week, 10.01% over the past month, and 21.08% year-to-date [2] Group 3 - The fund manager of Southern CSI 500 ETF is Luo Wenjie, who holds a Master's degree in Mathematical Finance from the University of Southern California and a Master's in Computer Science from the University of California [4] - Luo Wenjie has extensive experience in quantitative analysis and has been with Southern Fund since September 2008, currently serving as the General Manager of the Index Investment Department [4][5]