Onto Innovation (ONTO) Q3 2026 earnings review
Onto Innovation's chip tool orders jump, but investment losses weigh
Onto Innovation, which makes chip inspection and measurement machines, is riding a wave of artificial intelligence factory spending while its new Japanese investment drags down reported profit. Revenue jumped 88% from a year ago (about 78% excluding the acquired Semilab business by our math), and operating margin excluding one-offs reached 33%. Chief executive Mike Plisinski said order backlog climbed past $1.3 billion and set a fourth-quarter sales plan well above what the company's prior second-half outlook pointed to.
| Revenue | $409.7M +87.8% from a year ago (~78% excluding Semilab by our math) |
|---|---|
| Total backlog | >$1.3B up from >$1.0B in last quarter's filing |
| Profit per share, excluding one-offs | $2.44 +165% from a year ago (GAAP: $0.95 after Rigaku paper loss) |
| Q4 revenue outlook | $430–450M middle of the range: +65% from a year ago, +9% above prior implied floor |
⚖️ Verdict: 🟢 Bullish
The story got better because customers booked at least $610 million of new orders in a single quarter by our math, pushing the backlog higher even as factory shipments set a record. That order growth eases near-term worries about a pause in chip-packaging spending and shows supply constraints are not holding back deliveries. Two cautions stand out: the new $710 million stake in Rigaku produced an immediate $41 million paper loss that caused GAAP profit to miss the company's plan, and management's fourth-quarter outlook increases restructuring charges to about $20 million.
The question now is whether orders placed years ahead of schedule represent lasting chip-factory expansion or customers double-ordering to secure delivery slots. If demand is durable, revenue will keep climbing through 2027; if customers ordered early just to hold their place in line, bookings will stall once factory lead times ease. Next quarter's backlog and first-quarter 2027 outlook will tell.
🐂 Bull Case
Backlog Jumps Past $1.3 Billion on AI Demand
Onto Innovation makes inspection and measurement machines that chipmakers use to spot defects and measure tiny features on computer chips. Chief executive Mike Plisinski said the company's backlog — orders customers have placed but Onto has not yet shipped — "increased in the quarter to more than $1.3 billion", giving it "visibility into our customer investment plans extending out multiple years".
- Total backlog: over $1.3 billion, up from over $1.0 billion in last quarter's filing (over $1.1 billion on last quarter's call)
- New orders booked in Q3: at least $610 million to $710 million by our math, combining $409.7 million of shipped sales with at least $200 million to $300 million of added backlog
- Underlying Q3 sales growth: about 78% from a year ago by our math after stripping roughly $21 million from the acquired Semilab business, compared with 87.8% total sales growth
This matters because the order book grew even as factory shipments hit a record $409.7 million, showing that component lead times did not hold back deliveries. The fourth-quarter sales plan of $430 million to $450 million also leaves second-half sales nearly 34% above the first half by our math, beating the 25% floor management set three months ago.
What to watch: the exact backlog figure and its delivery schedule in the quarterly filing and conference call. A rising share of orders scheduled for 2027 would confirm that customers are still adding capacity rather than pulling orders forward.
Both Main Product Lines Hit Record Sales
Onto sells into two main chipmaking stages: Advanced Nodes, which measures microscopic transistors on leading-edge logic and memory chips, and Advanced Packaging and Specialty Devices, which inspects how multiple chips are stacked and wired together for artificial intelligence processors.
Both divisions set quarterly sales records in the third quarter. The company said Advanced Nodes grew on "strong adoption of the Atlas" G6 system, an optical tool that measures three-dimensional chip structures. Advanced Packaging and Specialty Devices set its own record "primarily driven by the Dragonfly" G5 and Firefly inspection systems, which find surface defects on packaged chips.
What to watch: segment revenue percentages on the conference call against the full-year targets of 80% growth in advanced packaging and over 35% in Advanced Nodes. Beating those targets would show the new Dragonfly G5 tool is winning market share.
Asian Factories and Lower Overhead Lift Margins
Onto has been shifting machine assembly to extended factories in Asia while scaling up revenue. Gross margin excluding one-offs rose 0.6 percentage points from last quarter and 3.6 percentage points from a year ago to 57.6%, as the cost of making products fell 4.1 percentage points of revenue on a GAAP basis.
- Research and development: 11.0% of revenue, down 3.9 percentage points from a year ago
- Sales and marketing: 5.8% of revenue, down 2.0 percentage points
- General and administrative: 9.6% of revenue, down 1.8 percentage points
Because overhead grew much slower than revenue, operating margin excluding one-offs jumped 11.5 percentage points from a year ago to 32.6%, and the fourth-quarter plan calls for 33.5% to 34.5%.
What to watch: fourth-quarter gross margin against the 57.7% to 58.3% plan. Hitting the top half would show higher-priced Dragonfly G5 shipments are lifting product margins beyond factory savings.
🐻 Bear Case
Rigaku Stake Brings Immediate Paper Losses
In August, Onto "closed on its purchase of a 27% ownership interest in Rigaku", a Japanese maker of X-ray chip measurement tools, for about $710 million. Management carries this minority stake at fair value on the balance sheet, which means swings in Rigaku's share price and the Japanese yen flow straight through Onto's income statement.
In less than two months of ownership during the third quarter, Onto recorded a $40.8 million unrealized loss on the Rigaku investment — a 5.8% markdown by our math. That single charge knocked $0.83 per share off pre-tax profit by our math and caused GAAP profit per share to print at $0.95, missing the company's $1.54 to $1.70 plan.
Onto strips this loss out of profit per share excluding one-offs by grouping it under merger and acquisition expenses, even though it is an ongoing mark-to-market adjustment on a $710 million capital deployment.
What to watch: commercial orders from the joint Rigaku marketing agreement in 2027. Without tool sales or licensing revenue soon, shareholders bear stock and currency swings for a stake management previously said would initially only match foregone interest.
One-Off Restructuring Charges Keep Growing
In its financial notes, the company says restructuring charges occur "outside of the ordinary course of our ongoing business" and excludes them from its preferred profit measures. Yet Onto has booked these charges in every quarter for the past two years as it shifts manufacturing to Asia.
In the third quarter, Onto excluded $12.1 million of restructuring and other costs ($10.9 million in cost of goods and $1.2 million in operating expenses), bringing the nine-month total to $42.8 million. Instead of winding down as the Asian factories ramp up, the fourth-quarter outlook projects $18.0 million to $22.0 million in restructuring charges — lifting the full-year total to about $62.8 million by our math.
What to watch: the first-quarter 2027 outlook in February. If restructuring charges remain above $10 million a quarter into a third year, they are a permanent cost of running the factory network rather than a one-off.
Risks this quarter didn't answer
Four standing items from prior quarters depend on disclosures that live in the quarterly filing or conference call rather than the earnings release.
- Customer concentration and order digestion: four customers made up 57% of first-half sales; the third-quarter filing's customer table will show whether the $1.3 billion backlog rests on the same few buyers.
- Semilab performance: the acquired materials-analysis unit ran at a $92 million annual pace in the first half against an original $130 million target; Note 2 of the filing will show its third-quarter revenue and profit.
- Asian factory shipment share: management previously targeted shipping over 60% of tools from extended factories in Asia; the conference call will show if it hit that mark.
- Dragonfly G5 revenue share: the release credits G5 for record packaging sales, but management has not yet disclosed its exact share of inspection revenue.
👓 Other Themes
Trade Rules and Middle East Conflict Risks
Onto updated its risk disclosures to highlight global trade and geopolitical tensions alongside its convertible debt. The company warned that changes in United States tariff and export rules, retaliatory trade actions, and the conflict involving Israel, the United States and Iran could disrupt its global supply chain and Asian factory operations, while diluted shares fell 0.9% from last quarter to 49.3 million.
💲 Other KPIs
Onto generated $79 million of cash from operations, up from $62 million last quarter but down 5.3% from $83.4 million a year ago. The share of profit excluding one-offs that turned into cash was 65.7% by our math, held back as accounts receivable rose 14.0% from last quarter to $384.5 million and inventories climbed 11.9% to $424.2 million to support fourth-quarter shipments.
Cash and marketable securities dropped from $1.88 billion in June to $1.25 billion at the end of September after Onto paid roughly $710 million to close its 27% investment in Rigaku. With $1.47 billion of convertible notes due in 2031 on the balance sheet, the chip-equipment maker now carries $221.7 million of net debt by our math.
Weighted average diluted shares fell 0.9% from 49.68 million in the second quarter and rose 0.3% from 49.11 million a year ago. Share repurchases executed in May alongside the convertible note offering lowered the quarterly average share count, while the 2031 convertible notes have not yet added dilution.
🔮 Guidance
Raised against the prior second-half floor. The middle of the range is $440 million, up 7.4% from the third quarter and 64.9% from a year ago by our math. That lifts full-year revenue growth to 47.7% by our math, matching Plisinski's plan to "finish 2026 with revenue growth exceeding 45% year over year". Onto beat its revenue midpoint in the last four quarters by 4.6% on average; if the pattern holds, fourth-quarter sales would reach about $460 million by our math.
New. The plan puts gross margin at 58.0% at the middle of the range, up 0.4 percentage points from the third quarter's 57.6% excluding one-offs and 3.4 percentage points above the fourth quarter of 2025. The steady climb reflects higher factory output in Asia and more shipments of the Dragonfly G5 inspection system.
Raised. Management previously planned to exit the year at 33% or higher, and now sets the middle of the fourth-quarter range at 34.0%, up 1.4 percentage points from the third quarter and 8.8 percentage points from a year ago by our math. Higher revenue continues to outpace operating expenses.
New. The middle of the range is 24.6%, up 1.3 percentage points from 23.3% in the third quarter and 19.4 percentage points from 5.2% a year ago by our math. The 9.4-point gap between the GAAP plan and the plan excluding one-offs comes from $19.7 million of intangible amortization, $18.0 million to $22.0 million of restructuring charges, and $1.3 million to $1.8 million of merger costs.
New. At the middle of the range ($2.69), profit per share excluding one-offs grows 10.2% from the third quarter and 113.5% from $1.26 a year ago by our math. The increase follows higher sales and the 1.4-point rise in planned operating margin.
New. The middle of the range is $2.01, more than double the third quarter's $0.95 and nearly ten times the $0.21 recorded a year ago by our math. The reconciliation assumes no new mark-to-market gain or loss on the Rigaku stake and includes $0.37 to $0.45 per share of restructuring charges and $0.40 of amortization.
❓ Key Questions
Why are restructuring charges rising to $20 million in Q4?
Restructuring and other charges hit $42.8 million in the first nine months and the fourth-quarter outlook adds another $18 million to $22 million. Investors need to know what specific projects drive the fourth-quarter increase and when these charges will end.
How much of the $1.3 billion backlog ships in 2027?
Last quarter management said 30% to 40% of its backlog covered 2027. With the order book now past $1.3 billion and fourth-quarter sales planned at $430 million to $450 million, how much of the current backlog is scheduled for 2027 delivery?
What did Semilab contribute to third-quarter revenue and profit?
The press release does not break out Semilab USA, which ran below its original $130 million annual revenue goal in the first half. What were Semilab's standalone revenue and operating margin before intangible amortization in the third quarter?
What is Dragonfly G5's share of packaging inspection sales?
Onto said Dragonfly G5 and Firefly drove record Advanced Packaging and Specialty Devices revenue, but has not quantified the G5 ramp since saying it was under 10% in the first quarter. What share of inspection shipments did G5 reach in the third quarter?