GIGADEVICE is trading at HK$352.40, up 4.57%, on October 21, 2026, in a move consistent with the broader semiconductor rebound. - The supplied sector context reports SOXX up 3.36%, with investors buying back into recently battered chip stocks. - No clear company-specific catalyst surfaced; recent coverage points to the October 29 board meeting for third-quarter results and earlier share buybacks, not a new October 21 announcement.