Quantinuum Inc. (QNT) Stock Price & How to Invest
Short answer
QNT is Quantinuum, the trapped-ion quantum computing company spun out of Honeywell and Cambridge Quantum that went public on the Nasdaq in June 2026. It is a real, well-backed technology leader, but it trades at an extreme valuation (roughly 500 times its tiny trailing revenue) with heavy losses, so it is a highly speculative, story-driven stock rather than a settled business.
QNT stock price
As of 2026-07-08, Quantinuum Inc. (QNT) last closed at $75.61, up 29.5% over the past month. Over its trading history so far it has traded between $51.40 and $83.17.
Prices are daily closing prices from Yahoo Finance and may be delayed. For the live quote, check your broker or Quantinuum Inc.'s investor relations page. Walnut is informational, not investment advice.
What does Quantinuum Inc. (QNT) do?
Quantinuum Inc. (Nasdaq: QNT) is a quantum computing company formed in 2021 from the merger of Honeywell's quantum computing division and the UK-based software firm Cambridge Quantum. It builds trapped-ion quantum computers (its H-Series and next-generation Helios systems), plus the developer tools, application libraries, and quantum-safe cybersecurity products that run on them. Honeywell remains the majority owner. The company listed on the Nasdaq Global Market on June 4, 2026, pricing an upsized IPO at $60 per share and raising about $1.68 billion, one of the highest-profile quantum computing debuts to date.
The investment picture is a classic frontier-technology profile: strong scientific credibility and deep-pocketed backing paired with very early commercial revenue and large losses. Quantinuum reported roughly $31 million of net revenue for full-year 2025 against a net loss of about $193 million, and the market currently values it near $20 billion, an extreme multiple of sales. That gap means the stock is priced for years of rapid, sustained growth and eventual commercialization of fault-tolerant quantum computing. If that roadmap slips, the valuation leaves little margin for error, which is why QNT sits at the speculative end of the risk spectrum.
What's driving Quantinuum Inc. (QNT)?
1. Trapped-ion technology leadership
Quantinuum's trapped-ion architecture has repeatedly set records on quantum volume and qubit fidelity, metrics that measure how reliably a quantum computer can run deep circuits. Its H-Series and forthcoming Helios systems are positioned as among the highest-quality quantum machines available. Continued gains in fidelity and error correction are the core of the bull case.
2. Honeywell backing and full-stack model
Honeywell remains the majority shareholder, giving Quantinuum industrial credibility, capital, and enterprise relationships that smaller quantum pure-plays lack. The company also spans the full stack, hardware plus software, developer tools, and quantum-safe cybersecurity, which gives it multiple potential revenue paths as the field matures.
3. Enterprise, cloud, and government demand
Revenue today comes from research partnerships, cloud access to its machines, and quantum-cybersecurity products sold to enterprises and governments. Access agreements with large tech platforms and national labs provide early commercial validation. Scaling these from pilots into recurring, large contracts is the key to closing the gap between the story and the financials.
4. Capital raised to fund the roadmap
The $1.68 billion IPO gives Quantinuum a large cash cushion to fund years of research and hardware development without immediate financing pressure. That runway matters in a field where profitability is likely many years away and where cash burn is significant.
What are the risks to Quantinuum Inc. (QNT)?
The valuation is the dominant risk: near $20 billion of market value on roughly $31 million of 2025 revenue implies a price-to-sales multiple around 500, so the stock discounts a future that is far from guaranteed. Losses are large (about $193 million in 2025) and cash burn is heavy, and quarterly revenue is small and lumpy, making growth hard to forecast. Quantum computing itself remains pre-commercial, with no certainty on when, or whether, fault-tolerant machines will deliver broad economic value. Competition is intense across different architectures and includes far larger players like IBM, Google, and Microsoft. As a recent IPO with Honeywell holding most shares, QNT also carries low-float volatility, lock-up-expiration overhang, and limited public trading history.
How is Quantinuum Inc. (QNT) valued? (approximate, JULY 2026)
A simple financial snapshot. These are approximations and refresh quarterly; for current figures see Quantinuum Inc.'s investor relations page or your broker.
- Revenue (FY2025): ~$31M
- Revenue (Q1 2026): ~$5.2M
- Net loss (FY2025): ~$193M
- Market cap: ~$20B
- Price / sales: ~500x
- IPO (Jun 2026): ~$60/share, ~$1.68B raised
Quantinuum trades at an extreme multiple of its trailing revenue, one of the highest in the public markets, reflecting optimism about quantum computing rather than current fundamentals. Revenue is small and uneven while losses are large, so traditional earnings-based valuation does not apply. The figures are approximate, drawn from full-year 2025 results, the June 2026 IPO, and mid-2026 market prices.
Who competes with Quantinuum Inc. (QNT)?
Quantum computing pure-plays
IonQ (also trapped-ion), Rigetti Computing (superconducting qubits), and D-Wave Quantum (quantum annealing) are the closest publicly-traded comparables. All share very high revenue multiples, early commercial traction, and heavy losses, so they tend to move together on quantum-sector sentiment.
Big-tech quantum programs
IBM, Google (Alphabet), Microsoft, and Amazon all run large, well-funded quantum research efforts, often as part of their cloud platforms. They can out-invest pure-plays and control distribution through their clouds, making them both potential partners and formidable long-term competitors.
Quantum-safe security and software peers
Quantinuum's cybersecurity and quantum-software products compete with a broader set of post-quantum cryptography and enterprise-software vendors. This overlaps with established security and cloud providers rather than with hardware-only quantum firms.
How to invest in Quantinuum Inc. (QNT)
There are three common ways to get QNT exposure. Buy shares (or fractional shares) directly at any major broker. Hold an ETF that includes it, which spreads the position across many companies. Or build it into a focused thematic basket, so QNT sits alongside other stocks that express the same thesis.
Walnut takes the basket route. Describe a thesis where QNT fits (for example “AI infrastructure” or “dividend-growth large-caps”) and the AI proposes 5 to 6 constituents with target weights. You review the plan and fund it through your own broker when you're ready.
The bottom line on Quantinuum Inc. (QNT)
Quantinuum is one of the most credible names in quantum computing, but at around 500 times sales with large ongoing losses, QNT is a speculative bet on a technology that is still years from broad commercial payoff.
More on Quantinuum Inc. (QNT)
Whether QNT is worth buying today depends more on your time horizon and what you already hold than on any single call. We walk through valuation, what would have to go right, and the risks in is QNT a buy?, and where the stock could go from here in the QNT stock forecast.
For income investors, whether QNT pays a dividend and how the payout looks is covered in does QNT pay a dividend?
Build a basket around QNT with Walnut
Use Quantinuum Inc. as one constituent in a thematic basket Walnut's AI helps you assemble. Describe a thesis you believe in, the AI proposes the holdings and weights, and you approve before any broker order.
FAQ
What does Quantinuum (QNT) do?
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Quantinuum builds trapped-ion quantum computers and the software, developer tools, and quantum-safe cybersecurity products that run on them. It was formed by merging Honeywell's quantum computing division with Cambridge Quantum, and Honeywell remains its majority owner.
When did QNT go public?
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Quantinuum listed on the Nasdaq Global Market on June 4, 2026. It priced an upsized IPO at about $60 per share and raised roughly $1.68 billion, making it one of the largest quantum computing debuts to date.
Is Quantinuum profitable?
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No. Quantinuum reported about $31 million of net revenue for 2025 against a net loss of roughly $193 million. Like other quantum pure-plays, it is in a heavy-investment phase and profitability is likely many years away, if it comes at all.
Why is QNT's valuation so high?
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With a market cap near $20 billion on only about $31 million of 2025 revenue, QNT trades around 500 times sales. That reflects investor optimism about the long-term potential of quantum computing rather than current financial results, and it leaves little room for disappointment.
How does Quantinuum compare to IonQ and Rigetti?
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IonQ is the larger trapped-ion pure-play by revenue, Rigetti uses superconducting qubits, and D-Wave focuses on annealing. All trade at very high revenue multiples with large losses. Quantinuum's Honeywell backing and quantum-volume records are often cited as differentiators, but all three are highly speculative.
What are the main risks with QNT?
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The biggest risks are the extreme valuation, large ongoing losses and cash burn, small and lumpy revenue, and the fact that quantum computing is still pre-commercial. Competition from big-tech programs and post-IPO volatility, including lock-up overhang, add to the uncertainty.
Does QNT pay a dividend?
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No. Quantinuum does not pay a dividend. As an unprofitable, early-stage growth company, it reinvests capital into research and hardware development rather than returning cash to shareholders.
How can I track QNT in Walnut?
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You can add QNT to a thematic basket, for example a quantum computing or frontier-technology theme, connect your brokerage, and monitor how it moves against your target weights. Walnut is not an investment adviser, so treat any analysis as descriptive information, not a recommendation.
Walnut is informational, not investment advice. Financial figures on this page are approximations; always verify current numbers with Quantinuum Inc.'s investor relations page or your broker before making investment decisions.