On August 5, YOFC fell 4.36% in regular trading, trading at 103.5 HKD/share, with turnover of approximately 190 million HKD. The decline comes as the broader optical communication sector retreated sharply following a strong rally the previous trading day.

On August 4, optical communication stocks had surged broadly, with ZJ Innolight rising nearly 17%, CIG gaining 16%, and YOFC climbing approximately 8%, driven by optimism around AI computing demand and institutional views that InP supply gaps were widening. However, profit-taking pressure emerged on August 5, with the sector reversing course. Within the Communications Equipment sector, ZJ Innolight fell 7.14%, CIG declined 6.5%, while ZTE edged up 0.7%, Nanjing Panda rose 0.14%, and Fibocom gained 0.32%.

Broader context includes ongoing concerns over fiber industry capacity expansion potentially breaking supply bottlenecks, with multiple competitors launching preform expansion plans. Additionally, fund redemption pressure persists following the stock's 62% cumulative decline in July, which triggered significant drawdowns in funds holding concentrated positions.

(The above content is based on publicly available market information, generated by a program or algorithm, and is intended solely as a stock movement alert. It does not constitute investment advice or a basis for trading decisions.)