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ONTO Raises Q4 Outlook as AI Packaging Demand Drives Record Growth

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Key Takeaways

  • Onto Innovation expects Q4 revenues of $430M-$450M, with non-GAAP EPS projected at $2.59-$2.79.
  • ONTO's Dragonfly G5 has reached over 10 customers, with 2027 orders already twice 2026 revenues.
  • ONTO's backlog topped $1.3B, with some orders extending into 2028 and revenue growth expected through H1 2027.

Onto Innovation Inc. (ONTO - Free Report) raised its fourth-quarter outlook after record third-quarter revenues and broader adoption across advanced packaging and advanced nodes. The update shows that AI-related semiconductor investment is translating into higher demand for the company’s process-control tools.

The next question is durability. Backlog now exceeds $1.3 billion, while customer commitments extend into 2028 in some cases. That visibility gives ONTO a longer runway than a single strong quarter would imply.

ONTO’s Q4 Guidance Points to Another Record Step-Up

Management expects fourth-quarter revenues of $430 million to $450 million. The midpoint implies sequential growth of more than 7% and would bring full-year 2026 revenues to about $1.49 billion, representing growth of more than 45%.

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Profitability is expected to improve alongside the revenue increase. ONTO projects fourth-quarter non-GAAP gross margin of 57.7-58.3% and non-GAAP operating margin of 33.5-34.5%, while non-GAAP earnings are expected at $2.59-$2.79 per share.

Onto’s Dragonfly G5 Is Scaling With AI Packaging

Advanced packaging and specialty-device revenues increased 35% sequentially in the third quarter, with Dragonfly driving much of the growth. Dragonfly G5 has reached more than 10 customers, and 2027 purchase orders already represent twice its expected 2026 revenues.

The demand backdrop extends beyond ONTO. Camtek Ltd. (CAMT - Free Report) , which supplies inspection and metrology systems to advanced semiconductor markets, reported record third-quarter 2026 revenues of $161.3 million and expects 2027 revenues to exceed $800 million. Its outlook also cites advanced packaging demand tied to AI.

ONTO’s Atlas G6 Expands Advanced-Node Exposure

Advanced-node revenues reached about $135 million in the third quarter, with memory contributing roughly 60% and logic about 40%. Atlas G6 adoption helped the business reach a quarterly record as customers increased process-control intensity in newer logic and memory nodes.

Management described Atlas G6 as the fastest optical critical dimension platform launch in ONTO’s history. KLA Corporation (KLAC - Free Report) , a larger semiconductor process-control supplier, reported $3.75 billion of semiconductor process-control revenues in its September quarter, up 29% year over year, reinforcing the scale of investment across this market.

Onto’s Backlog Extends the AI Spending Cycle

Backlog increased about 20% in the third quarter to more than $1.3 billion. Management expects sequential revenue growth through at least the first half of 2027, while some orders in panel-level packaging extend into 2028.

The backlog is not being driven by longer tool lead times. Management said customers are planning to secure equipment for multiyear production ramps, and the company has not seen lead-time extensions across its product portfolio. That distinction supports the view that visibility reflects customer investment schedules rather than supply constraints.

ONTO’s Near-Term Signals Support the Growth Narrative

The operating picture remains favorable, but valuation and execution still matter. ONTO trades above its five-year median on trailing enterprise value-to-sales, while customer concentration, input costs and the integration of newer investments remain risks.

ONTO currently carries a Zacks Rank #2 (Buy). Its Momentum Score of B complements the favorable near-term earnings-revision backdrop, including a 2.7% increase in the current-year earnings estimate over the past four weeks. The Value Score of D, Growth Score of C and  VGM Score of C are less supportive, suggesting investors should weigh the improving earnings trend against valuation and execution demands. You can see the complete list of today’s Zacks #1 Rank (Strong Buy) stocks here.

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