Yangtze Optical Fibre And Cable is trading at HK$98.65 (4% down). The decline is attributed to growing concerns over potential oversupply in the optical fibre industry due to aggressive capacity expansion plans. Analysts like Jefferies have downgraded the stock, citing risks of market share erosion and earnings potentially peaking between 2026 and 2027. The pullback also reflects profit-taking and re-evaluation of elevated valuations after its recent AI-driven rally.