长光华芯股价涨5.52%，南方基金旗下1只基金位居十大流通股东，持有95.47万股浮盈赚取360.88万元

Group 1 - The core viewpoint of the news is the performance and financial metrics of Changguang Huaxin, which saw a stock price increase of 5.52% to 72.26 CNY per share, with a trading volume of 256 million CNY and a market capitalization of 12.738 billion CNY [1] - Changguang Huaxin specializes in the research, manufacturing, and sales of core components in the laser industry, including semiconductor laser chips, devices, and modules, with a revenue composition of 76.98% from high-power single-tube series, 11.47% from VCSEL and optical communication chips, 5.54% from high-power bar series, 5.05% from other sources, and 0.96% from waste sales [1] Group 2 - Among the top ten circulating shareholders of Changguang Huaxin, a fund under Southern Fund, the Southern CSI 1000 ETF (512100), entered the top ten in the second quarter, holding 954,700 shares, which is 0.9% of the circulating shares, with an estimated floating profit of approximately 3.6088 million CNY [2] - The Southern CSI 1000 ETF (512100) has a total asset size of 64.953 billion CNY, with a year-to-date return of 22.64%, ranking 1895 out of 4222 in its category, and a one-year return of 62.7%, ranking 1305 out of 3798 [2]