Yangtze Optical Fibre and Cable (YOFC) saw its stock price surge 5.12% during intraday trading on Tuesday, marking a significant rebound.

The sharp rise is attributed to two major upcoming index inclusions. The company is set to join the FTSE China 50 Index after market close on June 18 and the HKEX Tech 100 Index from June 15. As these are widely tracked benchmarks, passive funds are expected to conduct mandatory buying around the effective dates, providing substantial near-term support to the stock.

Furthermore, the fundamental backdrop remains supportive. Industry analysts note that tight supply conditions in the fiber optic market persist, as optical preform capacity expansion lags behind demand growth. Demand continues to be driven by multiple factors, including AI data center buildouts, recovery in overseas telecommunications infrastructure, and emerging applications like fiber-based drones. This favorable supply-demand dynamic, coupled with a technical rebound from oversold levels following a recent decline, underpins the stock's strong performance.