南大光电涨2.02%，成交额7.66亿元，主力资金净流入5246.26万元

Core Viewpoint - Nanda Optoelectronics has shown a significant increase in stock price and trading volume, indicating strong market interest and potential growth in the electronic materials sector [1][2]. Company Performance - As of September 30, Nanda Optoelectronics reported a total of 130,200 shareholders, an increase of 23.39% from the previous period [2]. - The company achieved a revenue of 1.229 billion yuan for the first half of 2025, representing a year-on-year growth of 9.48% [2]. - The net profit attributable to shareholders for the same period was 208 million yuan, reflecting a year-on-year increase of 16.30% [2]. Stock Market Activity - On October 21, Nanda Optoelectronics' stock price rose by 2.02%, reaching 38.83 yuan per share, with a trading volume of 766 million yuan and a turnover rate of 3.03% [1]. - The stock has increased by 21.74% year-to-date, but has seen a decline of 6.93% over the last five trading days [1]. - The company has a total market capitalization of 26.838 billion yuan [1]. Shareholder Composition - As of June 30, 2025, the top ten circulating shareholders included several ETFs, with E Fund's ChiNext ETF holding 14.6025 million shares, an increase of 2.1233 million shares from the previous period [3]. - Southern CSI 500 ETF entered the top ten shareholders with 10.2679 million shares [3]. - Other notable shareholders include Guolian An's CSI All-Index Semiconductor Products and Equipment ETF, which increased its holdings by 182.55 million shares [3]. Business Overview - Nanda Optoelectronics specializes in the production, research, and sales of advanced electronic materials, with applications in integrated circuits, flat panel displays, LEDs, third-generation semiconductors, photovoltaics, and semiconductor lasers [1]. - The company's revenue composition includes specialty gas products (60.95%), precursor materials (27.80%), and other products (7.02%) [1].