Yangtze Optical Fibre and Cable (YOFC) stock plummeted 5.32% during intraday trading on Wednesday, as the optical communications sector extended its correction.

The decline was driven by intensifying industry headwinds, including escalating fears of overcapacity as aggressive expansion of production could lead to oversupply by next year. Furthermore, reports suggest 800G optical module prices face cuts exceeding 60%, pressuring gross margins and raising volume-up-price-down risks for the sector.

Adding to the pressure, NVIDIA is advancing a copper-over-fiber strategy, with CPO solutions being trialed as replacements for traditional optical modules, challenging the sector's long-term growth narrative. YOFC's dynamic PE ratio remains at historically extreme levels following a 15x surge over the past year, which has created significant profit-taking pressure as large accumulated gains incentivize institutional selling.