Amkor Technology is trading 8.6% up at $33.10 as semiconductor stocks rebound after Thursday’s sharp selloff. - No clear company-specific announcement explains the move; reports point to a wider semiconductor bounce as investors reassessed the pullback, with sector peers also rising in premarket trading. - Amkor fell 14.50% on November 5. Its Gwangju expansion was announced October 29, not November 6, and does not establish a fresh catalyst.