捷捷微电股价跌5.03%，南方基金旗下1只基金位居十大流通股东，持有738.14万股浮亏损失1195.78万元

Group 1 - The core point of the news is that Jiangsu Jiejie Microelectronics Co., Ltd. experienced a stock decline of 5.03%, with a current share price of 30.58 yuan and a total market capitalization of 25.445 billion yuan [1] - The company, established on March 29, 1995, specializes in the research, design, production, and sales of power semiconductor discrete devices, with its main business revenue composition being 67.12% from power semiconductor devices, 30.73% from power semiconductor chips, 1.42% from other sources, and 0.73% from packaging and testing of power devices [1] Group 2 - Among the top ten circulating shareholders of Jiejie Microelectronics, the Southern Fund's Southern CSI 500 ETF (510500) entered the list in the second quarter, holding 7.3814 million shares, which accounts for 1.02% of the circulating shares [2] - The Southern CSI 500 ETF has a total scale of 113.438 billion yuan and has achieved a year-to-date return of 28.06%, ranking 1804 out of 4218 in its category [2] Group 3 - The fund manager of Southern CSI 500 ETF is Luo Wenjie, who has a tenure of 12 years and 182 days, with the fund's total asset scale at 138.999 billion yuan [3] - During his tenure, the best fund return was 150%, while the worst return was -47.6% [3]