AFR(SZ:300620) Xin Lang Cai Jing·2026-01-29 07:05Group 1 - The stock of Guangku Technology fell by 5.04% on January 29, closing at 152.32 yuan per share, with a trading volume of 2.007 billion yuan and a turnover rate of 5.23%, resulting in a total market capitalization of 37.955 billion yuan [1] - Guangku Technology, established on November 9, 2000, and listed on March 10, 2017, is based in Zhuhai, Guangdong Province. The company's main business includes the design, research and development, production, sales, and service of optical fiber devices, as well as non-residential real estate leasing and import-export agency [1] - The revenue composition of Guangku Technology is as follows: optical communication devices account for 46.91%, fiber laser devices for 42.54%, lidar light source modules and devices for 8.68%, and others for 1.87% [1] Group 2 - According to data from the top ten holdings of funds, one fund under Yinhua Fund has a significant position in Guangku Technology. The Yinhua ChiNext 200 ETF (159575) held 1,200 shares in the fourth quarter, representing 1.07% of the fund's net value, making it the fifth-largest holding [2] - The Yinhua ChiNext 200 ETF (159575) was established on December 20, 2023, with a latest scale of 16.4771 million. Year-to-date returns are 8.8%, ranking 1966 out of 5551 in its category; the one-year return is 42.23%, ranking 1869 out of 4285; and since inception, the return is 57.11% [2] - The fund manager of Yinhua ChiNext 200 ETF is Tan Yuefeng, who has been in the position for 4 years and 33 days, managing total assets of 8.835 billion yuan. The best fund return during his tenure is 91.09%, while the worst is -44.45% [2]