Core Viewpoint - Youyan New Materials Co., Ltd. has shown a significant increase in stock price, reflecting positive market sentiment and investor interest in the company's advanced functional materials business [1]. Group 1: Company Overview - Youyan New Materials Co., Ltd. was established on March 12, 1999, and listed on March 19, 1999. The company is located at 2 D, Youyan Technology Innovation Center, Xinjiekou Outer Street, Xicheng District, Beijing [1]. - The company's main business involves the research, production, and sales of semiconductor materials, rare earth materials, optoelectronic materials, and high-purity/ultra-high-purity metal materials [1]. - The revenue composition of the main business includes: high-purity/ultra-high-purity metal materials (74.75%), rare earth materials (23.52%), infrared optical materials (2.18%), medical device materials (0.73%), and others (0.02%) [1]. Group 2: Shareholder Information - Guolian An Fund has a presence among the top ten circulating shareholders of Youyan New Materials, with its Guolian An Semiconductor ETF (512480) newly entering the top ten in the third quarter, holding 4.0487 million shares, which accounts for 0.48% of the circulating shares [2]. - The estimated floating profit for Guolian An Semiconductor ETF today is approximately 4.4535 million yuan [2]. - Guolian An Semiconductor ETF was established on May 8, 2019, with a latest scale of 20.165 billion yuan. Year-to-date return is 8.66%, ranking 690 out of 5564 in its category; the one-year return is 56.45%, ranking 669 out of 4288; and since inception, the return is 218% [2]. Group 3: Fund Manager Information - The fund managers of Guolian An Semiconductor ETF are Huang Xin and Zhang Zhenyuan. Huang Xin has a cumulative tenure of 15 years and 301 days, with the fund's total asset scale at 36.867 billion yuan and the best return during his tenure at 241.86% [3]. - Zhang Zhenyuan has a cumulative tenure of 12 years and 67 days, with the fund's total asset scale at 36.491 billion yuan and the best return during his tenure at 387.76% [3].