Onto Innovation is trading 10.55% down at $198.93 as semiconductor stocks sell off. - The decline follows Intel’s weaker outlook and concerns about the costs and returns of AI investment. Reuters reported Intel’s forecast and Amazon’s results intensified worries about AI-boom costs across technology and chip stocks. - SOXX was down 10.40% during the regular session, supporting a sector-led explanation. No company-specific announcement explaining the move surfaced in the search.