Yangtze Optical Fibre and Cable warns investors amid stock volatility

Yangtze Optical Fibre and Cable Joint Stock Company Limited (YOFC) announced abnormal stock trading, with its shares experiencing a cumulative deviation of over 20% in closing prices from September 16 to September 18, 2025. The company’s A-share rolling price-to-earnings ratio stood at approximately 141 times as of September 18, 2025, indicating a potentially high valuation.

YOFC's self-assessment confirmed normal daily operations despite a challenging market. For the first half of 2025, the company reported a total operating income of approximately 6.384 bn yuan, a 19.38% increase year-on-year, but net profit attributable to shareholders decreased by 21.71% to approximately 296 m yuan.

The company emphasized that no significant undisclosed information or major events affecting stock prices were identified after internal review and inquiry with its largest shareholder. While market interest in data center-related optical fiber and cable products has risen, YOFC stated that hollow-core fiber sales are still in early stages and have not yet significantly impacted its financial results.