On July 8, Yangtze Optical Fibre and Cable (YOFC) declined 3.35% in regular trading, trading at HK$152.0/share, with turnover of HK$1.002 billion, extending the prolonged selloff in the optical communication sector.

On the news front, the stock continues its deep correction driven by multiple headwinds. Nomura previously noted that capacity expansion in the fiber optic industry is accelerating, warning that if new entrants successfully develop high-end products such as hollow-core fiber and execute expansion plans, market competition will intensify and profit margins for incumbent players like YOFC will face pressure. Meanwhile, Corning's new glass bridge technology has raised market concerns about long-term demand for midstream fiber optic components, prompting short-term capital to continue de-rating valuations. Additionally, rumors of manufacturing difficulties with Nvidia's next-generation AI server Kyber NVL144 printed circuit boards have further dampened sentiment across the broader tech sector, dragging down related concept stocks.

Since reaching recent highs, YOFC has retreated sharply, having plunged over 22% on July 2 alone before continuing to decline in subsequent sessions.

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