🟢 Onto Innovation is trading 4.2% up in pre-market as semiconductor-equipment shares rebound

Onto Innovation is trading 4.2% up at $274.50 as semiconductor-equipment shares continued rebounding alongside stronger AI-related chip sentiment.

• South Korean chip-equipment stocks rallied on September 21, 2026, following gains in major semiconductor names; U.S. equipment stocks also advanced in the prior session.
• Broader risk-on backdrop, including gains in major U.S. indices, also supports the move.
• No fresh company-specific announcement or earnings release was identified for September 21, 2026.