Startup · United States
Quantinuum
HQ Broomfield, ColoradoFounded 2021501-1000 employeesQNTUpdated
Develops quantum computers and quantum software.
Funding7 rounds · $3.50B
- Equity raised
- $3.50B
- Debt, secondaries & grants
- $100M
- Latest
- $100MGrant · Sep 8, 2026
- Last valuation
- $10.00BprePre-money · Stage undisclosed · Sep 4, 2025
| Announced | Stage | Valuation | Basis |
|---|---|---|---|
| Jan 16, 2024 | Series A | $5.00B | Pre-money |
| Sep 4, 2025 | Undisclosed | $10.00B | Pre-money |
| Announced | Stage | Amount | Valuation | Lead investors | Other investors | Confidence |
|---|---|---|---|---|---|---|
| Sep 8, 2026 | Grant | $100M | — | — | — | Reported |
| Jun 5, 2026 | IPO | $1.68B | — | — | — | Confirmed |
| Sep 4, 2025 | Undisclosed | $600M | $10.00Bpre | — | — | Confirmed |
| Aug 15, 2025 | Series B | $839M | — | NVentures | — | Reported |
| Jan 16, 2024 | Series A | $300M | $5.00Bpre | — | JPMorganChase | Confirmed |
| Jan 4, 2024 | Undisclosed | $52.0M | — | — | — | Reported |
| Feb 22, 2022 | Convertible | $25.0M | — | IBM Ventures | — | Reported |
- Grant$100MSep 8, 2026
- IPOConfirmed$1.68BJun 5, 2026
- UndisclosedValuation $10.00BpreConfirmed$600MSep 4, 2025
- Series BLed by NVentures$839MAug 15, 2025
- $300MJan 16, 2024
- Undisclosed$52.0MJan 4, 2024
- ConvertibleLed by IBM Ventures$25.0MFeb 22, 2022
Raised counts equity rounds; debt, secondary sales and grants are totaled separately. Amounts in other currencies are converted at the announcement month's average rate. A ~ marks an estimated or converted amount.
Systems1
- HeliosA quantum-computing system offered through cloud access and on-premises deployment.
Newest unveiled first. Systems that belong to a government program link to the program page, where variants, costs and contracts are.
People9
| Person | Role |
|---|---|
| Denise Holmquist | CFO |
| Harry Buhrman | Chief Scientist of Quantum Algorithms and Innovation |
| Kaniah Konkoly-Thege | Chief Legal Officer |
| Kevin Dehoff | Chief Strategy Officer |
| Larry Stack | Chief Commercial Officer |
| Nitesh Sharan | Chief Financial Officer |
| Rajeeb Hazra | President and CEO |
| Tony Uttley | President and Chief Operating Officer |
| Zayn Hussain | Chief of Staff |
Sources10
Profile3
- 1
Sixth-Domain · Supports Organization · kind
“{"group": "startups", "id": "ad6e41f3-9cdf-4b4a-b366-18e2d2aa4c45", "name": "Quantinuum"}”
- 2CompanyQuantinuum | About
Quantinuum · Supports Organization · description, Organization · name, Organization · website
“As the world’s largest integrated quantum company, Quantinuum is leading the development of the most powerful quantum computers and the most advanced quantum software solutions. With our full-stack technology and world-class scientists, we are rapidly scaling quantum computing to solve tomorrow’s biggest challenges. We are making the impossible possible.”
- 3Government recordSEC company tickers and exchanges
U.S. Securities and Exchange Commission · Supports Organization · ownership
“[2110105,"Quantinuum Inc.","QNT","Nasdaq"]”
Systems1
- 4
Quantinuum · Supports System
“The Helios platform is now available to customers through Quantinuum’s cloud service and on-premises offering.”
Funding5
- 5
Quantinuum · Jun 5, 2026 · Supports Funding round · amount, Funding round · announced on
“The aggregate gross proceeds from the offering, before deducting underwriting discounts and commissions and other offering expenses were $1.68 billion.”
- 6
quantinuum.com · Sep 4, 2025 · Supports Funding round · amount, Funding round · post money valuation usd
“Honeywell today announced an approximately $600 million equity capital raise for Quantinuum, developer of the world’s highest-performing quantum computer, at a pre-money equity valuation of $10 billion.”
- 7
Freshfields · Jan 16, 2024 · Supports Funding round · stage
“Freshfields advises Quantinuum on its $300 million equity fundraise in series a financing round”
- 8
quantinuum.com · Jan 16, 2024 · Supports Funding round · amount, Funding round · announced on, Funding round · investors, Funding round · post money valuation usd
“Honeywell (NASDAQ: HON) today announced the closing of a $300 million equity fundraise for Quantinuum, the world’s leading integrated quantum computing company, at a pre-money valuation of $5 billion.”
- 9DatabaseQuantinuum company profile
Octen Business Search · Supports Funding round, Organization · country, Organization · employee range, Organization · founded year, Organization · hq city, Organization · hq region, Organization · linkedin url, Role
“funding round: Convertible Note, 2022-02-22, USD 25,000,000, lead: IBM Ventures”
People1
- 10
Quantinuum · Supports Role
“Rajeeb Hazra, President and CEO of Quantinuum.”
Each fact on this page is attached to the sources that support it. Archived copies are linked when we keep one.