GIGADEVICE is trading 4.7% down at HK$460.40, with elevated U.S. Treasury yields also flagged as pressure on richly valued chip stocks.

  • Recent reporting pointed to profit-taking after a sharp rise the prior week and a broader semiconductor pullback.
  • No confirmed company-specific announcement explaining the September 28, 2026 move surfaced in the search. Available context suggests sector and rates-related pressure, not a verified GIGADEVICE-specific catalyst.