The world's largest integrated quantum computing company
Quantum📍 Broomfield, COFounded 2021
Current Valuation
$11B
as of 2025-Q4
DECACORN
IPO Outlookrumored
Is Quantinuum going public in 2027?
An IPO is rumored for 2027, with nothing filed. Quantinuum remains private and the date is not the company's.
What is Quantinuum's valuation in 2026?
Quantinuum is valued at $11B as of 2025-Q4, set by its Series B ($838.85M, Nov 2025). That is the last confirmed mark, not a live price — private shares do not trade continuously.
Has Quantinuum filed an S-1?
No public S-1 is on file for Quantinuum as of 08/23/2026; the IPO is rumored.
Who are Quantinuum's investors?
Quantinuum's investors include Honeywell, JPMorgan Chase, Mitsui, Amgen, IBM.
Answers are derived from the roster record shown on this page — filing status, last round and confirmed marks. Where the record is silent, the answer says so rather than guessing.
Quantinuum is the world's largest integrated quantum computing company, formed in 2021 from the merger of Honeywell Quantum Solutions and Cambridge Quantum. The company develops trapped-ion quantum hardware (H-Series) and full-stack quantum software, and last raised at a $10.8B valuation in November 2025 led by Honeywell.
heavy product build — 83% of open roles are product-building functions (engineering/research/product) — 2 of 6 open roles are hardware.
Actively hiring with no tracked executive churn.
Open roles by month
Open roles by function
■ product-building ■ go-to-market / G&A
Helios\\ \\ Our Hardware-as-a-Service provides access on-premise, in the cloud, Research Areas\\ \\ Discover the vast landscape of our scientific expertisePublications\\ \\ Explore research and journal publications from our scientific Developer ToolsHardware AccessIntegrity & Compliance
Counted from Quantinuum's live job board as of 2026-08-17; role functions classified from posting titles. Open-role counts are an activity signal, not headcount. Refreshed monthly.
Founders & Key People
Honeywell Quantum SolutionsCambridge Quantum
Investors
Honeywell · JPMorgan Chase · Mitsui · Amgen · IBM
Products
H-Series trapped-ion quantum computers
InQuanto chemistry software
Quantum Origin cryptography
Competitors
IonQ · PsiQuantum · Rigetti · IBM Quantum · Google Quantum AI
QuantumComputingDecacornHoneywell
Private-company numbers are not real-time. Reflects publicly disclosed valuations from press releases, news reports, and tender offers as of 2025-Q4. Refreshed quarterly.