Margin recovery arrives as AI packaging lifts Onto
- Gross margins jumped 330 basis points sequentially to 53.4% in Q2 2026.
- Management expects more than 30% revenue growth in 2026.
- Advanced packaging is the main engine, with more than 50% growth forecast for 2026.
- Onto issued $1.5 billion in notes, removing the bridge loan risk for its Rigaku deal.
AI demand and margin recovery validate the bull case
Onto is a picks-and-shovels supplier for chipmakers. Its tools inspect and measure wafers and packages so factories can find defects early. The strongest demand is tied to AI chips, especially advanced packaging, which connects chips and high-bandwidth memory.
The Q2 2026 results were a major victory for the bull case. Gross margins expanded by 330 basis points sequentially to 53.4%, driven by a favorable mix shift toward high-margin inspection and metrology lines. This directly answered the main bear case worry that margin recovery was stalling.
The growth outlook remains strong. Management previously guided to more than 30% revenue growth in 2026, led by more than 50% growth in advanced packaging. The Dragonfly G5 inspection system is scaling up revenue and customer adoption in the second half of 2026.
The remaining bear arguments focus on long-term execution. The company must successfully integrate its planned 27% stake in Rigaku and prove that hybrid metrology synergies are real. There is also the constant risk that broader semiconductor equipment spending could soften if the overall macro environment weakens.
Tools first, service after the sale
Onto makes money mostly by selling systems and software to semiconductor makers. In early 2026, systems and software made up roughly 85% of revenue. Parts and services provide repeat business after the tools are installed.
The product is important because small defects can ruin expensive chips. Onto sells inspection, metrology, lithography, and process control software. Metrology means measuring tiny chip features during manufacturing.
The model can be very attractive when chip factories are spending. Customers buy expensive tools, then need upgrades, repairs, software, and support. It can also turn fast when customers slow capital spending, delay projects, or pick a rival tool.
Capital allocation has grown more complex. Onto agreed to buy a 27% stake in Rigaku for about $710 million. It recently issued $1.5 billion in convertible notes, replacing a bridge loan and creating a large cash pile. Management says software licenses and dividends from Rigaku can help offset the new financing costs, but integration will take time.
The tools that matter most
Dragonfly G5 inspection
This is the key new packaging inspection platform. It is qualified at a leading 2.5D logic customer, with shipments ahead of plan and a large pipeline of new applications.
3Di metrology
3Di measures smaller and denser 3D interconnects, which are important for high-bandwidth memory. The company continues to see strong demand and orders for this technology.
Atlas G6 metrology
Atlas G6 supports advanced nodes, including next-generation logic. The platform is gaining share and winning new applications.
Process control software
Software helps customers use data from tools to improve yield and factory output. It also supports the installed base after the original equipment sale.
Parts and services
Parts and services generate steady income when customers repair, upgrade, and keep older systems running.
Semilab USA portfolio
Semilab USA adds new metrology technology to the product lineup. The upside depends on integration and cross-selling.
Rigaku partnership
The planned 27% Rigaku stake could expand Onto's hybrid metrology reach. The value depends on closing the deal and turning the partnership into real income.
What customers buy
This mix uses Onto's Q1 2026 Form 10-Q revenue disclosure by source. The company groups revenue into systems and software, parts, and services.
What could break the story
Dragonfly G5 ramp disappoints
High impact · Medium oddsDragonfly G5 is central to the share-gain story in advanced packaging. Customer acceptance matters deeply. If orders do not turn into shipments and revenue, the high 2026 growth guide gets harder to hit.
Customer concentration and capex cycles
High impact · Medium oddsOnto sells into large semiconductor capital spending plans. A small number of big customers can move revenue a lot. If AI packaging, memory, or logic customers delay factory spending, revenue can fall quickly.
Rigaku deal execution
Medium impact · Medium oddsOnto agreed to buy 27% of Rigaku for about $710 million. While the company secured long-term funding with a $1.5 billion note issuance, the deal requires careful integration. The partnership must produce software license income or strategic wins to justify the capital.
China trade controls stay painful
Medium impact · Medium oddsTariffs, export rules, and market barriers have adversely affected results and the ability to compete in China. China revenue fell significantly in fiscal 2025. More rules could limit sales or push customers toward local tools.
In one breath
What does Onto Innovation actually do?
Onto sells machines and software that inspect and measure chips during manufacturing. Chipmakers use these tools to catch defects, improve yield, and make advanced packages for AI and other high-end chips.
Why is Onto tied to AI?
AI chips need advanced packaging and high-bandwidth memory. Onto's Dragonfly and 3Di tools help inspect and measure those packages, so AI-related factory spending can drive demand.
What is the main thing to watch in 2026?
Watch whether the company maintains its strong sequential gross margin improvements and achieves its target of exiting Q4 with operating margin above 30 percent.
Is the Rigaku investment good or bad?
It could help Onto expand in hybrid metrology, but it uses a lot of capital. The deal is best viewed as an option until investors see real income, customer wins, and successful integration.
Sources and research notes
This page combines Finn's company research with public filings and other cited materials. The thesis is reviewed when material company information changes; Finn Scores use the latest available scoring data.
- Thesis reviewed
- August 16, 2026
- Score data
- September 6, 2026
- Reviewed by
- Shivam Bharuka
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