有研硅涨2.07%，成交额6462.42万元，主力资金净流入106.96万元

Core Viewpoint - The stock of Youyan Silicon has shown fluctuations with a recent increase of 2.07%, reflecting a market capitalization of 15.416 billion yuan and a trading volume of 64.6242 million yuan, indicating active investor interest in the semiconductor materials sector [1] Group 1: Stock Performance - As of December 22, Youyan Silicon's stock price is 12.33 yuan per share, with a year-to-date increase of 9.70% [1] - Over the past five trading days, the stock has decreased by 1.28%, while it has seen a slight increase of 0.08% over the last 20 days and 0.98% over the last 60 days [1] Group 2: Financial Performance - For the period from January to September 2025, Youyan Silicon reported a revenue of 747 million yuan, representing a year-on-year decrease of 3.43% [2] - The net profit attributable to shareholders for the same period was 156 million yuan, down 19.81% year-on-year [2] Group 3: Shareholder Information - As of September 30, 2025, the number of shareholders for Youyan Silicon increased by 7.44% to 22,000, while the average number of tradable shares per person decreased by 6.93% to 23,057 shares [2] - The company has distributed a total of 162 million yuan in dividends since its A-share listing [3] Group 4: Institutional Holdings - Among the top ten circulating shareholders, the Jiashi Shanghai Stock Exchange Science and Technology Innovation Board Chip ETF holds 8.4725 million shares, a decrease of 381,800 shares from the previous period [3] - New institutional shareholders include Hong Kong Central Clearing Limited with 7.3279 million shares and Guotai Junan's ETF with 3.9176 million shares [3]