Yangtze Optical Electronic (SH:688143) Xin Lang Cai Jing·2025-11-21 03:09Group 1 - The core viewpoint of the news is the performance and market position of Changying Tong, a company specializing in optical fiber gyroscope technology, which has seen a decline in stock price and trading volume [1] - Changying Tong's stock price dropped by 5.23% to 34.80 CNY per share, with a total market capitalization of 4.482 billion CNY [1] - The company was established on May 18, 2010, and went public on December 12, 2022, focusing on the research, production, and sales of optical fiber ring devices and related solutions [1] Group 2 - The main revenue composition of Changying Tong includes optical fiber ring devices (57.61%), special optical fibers (19.36%), other supplementary products (11.68%), new materials (7.18%), and optical device equipment (4.17%) [1] - According to fund data, Yongying Fund has a significant holding in Changying Tong, with its fund "Yongying Qiyuan Mixed Initiation A" increasing its stake by 46.36 thousand shares in the third quarter [2] - The fund's current holding in Changying Tong represents 4.06% of its net asset value, ranking it as the ninth largest holding [2]