Shares of optical communication companies have kicked off the trading day with strong gains, capturing heightened investor attention in the sector.

Leading the charge, CIG (06166) climbed an impressive 17.12% to reach HK$113.20, reflecting robust buying momentum. Concurrently, ZJ INNOLIGHT (03308) advanced 11.23%, trading at HK$1,119, as demand for optical components continues to underpin performance.

Other notable gainers in the space include Converge Technology (01729), which rose 6.95% to HK$17.84, and YOFC (06869), adding 6.34% to hit HK$169.50, underscoring broad-based strength across the optical communication segment during the morning session.