Shares of Yangtze Optical Fibre and Cable (6869.HK) plunged 10.1% to HK$92.40 on July 30, extending a punishing slide that has erased roughly a third of the stock's value from above HK$140 in barely two weeks. The sell-off forces a hard question: has the market overcorrected, or was the prior AI-infrastructure rally built on hype that outran fundamentals?
A Spectacular Round-Trip From Penny Stock to Market Darling — and Back
The stock's 52-week range spans from HK$21.60 to HK$305.00 , a jaw-dropping swing reflecting how violently sentiment has shifted around AI-driven fibre demand. On April 2, 2026, YOFC's stock price soared, making it the first enterprise in Hubei province with a market value of 200 billion yuan. Today's price implies a market cap closer to HK$76 billion — a collapse of more than 60% from the peak. That wipeout dwarfs any change in the underlying business.
The Oversupply Fear Clashes With an Actual Shortage — For Now Ironically, most industry data still points to tight supply. CRU predicts the supply-demand gap rate for global optical fibre in 2026 will be about 16.4% , and global demand for data-centre fibre surged 75.9% in 2025 to 69.6 million core-kilometres, with 2026 projected to exceed 100 million. But the market is looking further out: the industry faces potential price pressure as new capacity comes online over the next two years.
Preform expansion initiated in 2025 will not reach commercialization until 2026 or 2027 , meaning the feared glut is still a forecast, not a fact.
Earnings in August Will Be the Real Test
YOFC will release its first-half 2026 results on August 25. With trailing EPS at roughly HK$1.49 , today's price puts the stock at about 62× trailing earnings — still rich for a cyclical manufacturer, even after the rout. Full-year 2024 revenue was CN¥12.2 billion with net income of just CN¥581 million ; bulls need H1 2026 to show a dramatic profit jump powered by soaring fibre prices to justify the remaining premium.
Analyst Consensus Hasn't Fully Caught Up
The average 12-month price target sits at HK$226.40, with 9 of 10 analysts still rating the stock a "Buy." That gap between street optimism and a stock in free-fall signals either a buying window or the beginning of a broader downgrade cycle. The August earnings print will decide which.