埃科光电股价跌5.26%，南方基金旗下1只基金重仓，持有4.09万股浮亏损失18.96万元

Group 1 - The core viewpoint of the news is the performance and market position of Aiko Optoelectronics, which experienced a 5.26% drop in stock price, currently at 83.33 yuan per share, with a total market value of 5.666 billion yuan [1] - Aiko Optoelectronics, established on March 24, 2011, and listed on July 19, 2023, specializes in the design, research, production, and sales of industrial machine vision imaging components, positioning itself as a leading domestic brand in China's machine vision sector [1] - The company's main business revenue composition includes industrial cameras at 72.03%, with line scan cameras at 46.70%, area scan cameras at 25.33%, image acquisition cards at 17.83%, and other products at 6.34%, along with intelligent optical units at 3.80% [1] Group 2 - From the perspective of major fund holdings, Aiko Optoelectronics is a significant investment for Southern Fund, with its Southern Quantitative Growth Stock Fund holding 40,900 shares, representing 1.15% of the fund's net value, making it the fourth-largest holding [2] - The Southern Quantitative Growth Stock Fund, established on June 29, 2015, has a current scale of 220 million yuan, with a year-to-date return of 11.52% and a one-year return of 66.23%, ranking 553 out of 4,285 in its category [2] - The fund manager, Xu Gonglei, has been in charge for 2 years and 240 days, with the fund's total asset size at 986 million yuan, achieving a best return of 58.36% and a worst return of 0.32% during his tenure [3]