Yangtze Optical Fibre And Cable is trading HK$118.30, down 5.06%, amid concerns that global optical-fiber and cable capacity expansion could intensify competition.

  • The decline follows a sharp multi-session rally as earlier AI-optics enthusiasm fades.
  • The 711–914% first-half profit-growth forecast and Shanghai buyout remain supportive, but do not directly explain the August 11 decline.
  • Trading activity is elevated; recent comparable selling involved HK$3.706 billion in turnover, indicating active rotation and profit-taking.