ONTO

Onto Innovation and PDF Solutions are compared as semiconductor equipment and software providers benefiting from AI and advanced packaging demand. ONTO posted record Q2 revenue of $343.1M (up 35.3% YoY) with raised 2026 guidance, while PDFS grew Q2 revenue 19% to $61.5M. ONTO trades at a lower forward P/E (22.06X vs 38.8X) and carries a Zacks Rank #2 (Buy), making it the preferred choice for near-term growth, though both face valuation and execution risks.

Onto Innovation stock fell 8.4% on October 14, 2026, significantly underperforming the S&P 500's 1.11% loss. Despite the daily decline, the semiconductor equipment maker has gained 7.94% over the past month and maintains a Zacks Rank #2 (Buy) rating. The company is expected to report strong earnings growth of 146.74% YoY with revenue projected at $390.66 million, up 79.05% from the prior year.

Onto Innovation (ONTO) reported strong financial performance with $1.9 billion in cash reserves and 35.3% year-over-year revenue growth. The company completed a $720 million investment in Rigaku Holdings to advance X-ray process control solutions for semiconductor manufacturing. However, rising costs, supply-chain pressures, and significant debt obligations from $1.5 billion convertible notes present challenges amid intense competition from rivals like KLA Corporation and Nova Ltd.