Ultra Clean Holdings is trading at $76.48, up 4.70%, alongside a strong semiconductor-sector rally. - SOXX rose 2.62% during the regular session. - Positive AI-chip sentiment, AMD’s reported price-increase plans, Intel’s Micro LED partnership, and favorable risk appetite are supporting chipmakers broadly. - No clear company-specific announcement, earnings update, or analyst action dated September 22, 2026, was identified; recent analyst information predates today’s move.