Startup profile · funding coverage
Quantinuum funding, valuation and investors
Public quantum-computing company combining trapped-ion processors with quantum software.
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Funding, valuation & investors
Answer-first snapshotLatest funding
Private capital raise
Approximately $600M · September 4, 2025
Latest known valuation
$10B pre-money equity valuation
Private capital raise · September 4, 2025
Total disclosed equity funding
Not publicly disclosed
Excludes debt, grants, acquisitions, secondaries, and IPO proceeds.
Current status
public
public
Investors in latest funding
Other: Quanta Computer , NVentures , QED Investors , MESH , Korea Investment Partners , JPMorgan Chase , Mitsui , Amgen , Cambridge Quantum Holdings , Serendipity Capital , Honeywell
Latest tracked event: IPO closing — public equity, not a venture round (June 5, 2026). It is shown separately because it is not counted as disclosed equity funding.
Overview
Quantinuum develops trapped-ion quantum computers and supporting software. Its hardware architecture uses quantum charge-coupled devices, while software products include tools for compiling and running quantum workloads. Honeywell announced an approximately $600 million capital raise in September 2025 at a $10 billion pre-money equity valuation.
Quantinuum subsequently completed a $1.68 billion gross-proceeds initial public offering on June 5, 2026 and trades on Nasdaq as QNT. The private-round valuation is a historical financing reference, not a current stock-market valuation. IPO underwriters are not automatically equity investors in the earlier private round.
For commercial comparisons, examine system performance, customer revenue and research-contract revenue separately rather than treating capital raised as evidence of computing advantage.
Why Quantinuum is interesting
Its financing path now includes both private growth capital and a completed Nasdaq IPO, making it a useful comparison for startups still financing hardware development privately.
Funding history (newest first)
IPO closing — public equity, not a venture round
2026-06-05 $1.68B gross proceeds; 28M new shares at $60Source: Read source · quantinuum.com
Private capital raise
2025-09-04 Approximately $600M Valuation: $10B pre-money equity valuation- Quanta Computer (participant)
- NVentures (participant)
- QED Investors (participant)
- MESH (participant)
- Korea Investment Partners (participant)
- JPMorgan Chase (participant)
- Mitsui (participant)
- Amgen (participant)
- Cambridge Quantum Holdings (participant)
- Serendipity Capital (participant)
- Honeywell (participant)
Source: Read source · quantinuum.com
Investors in our directory
Funds linked from Quantinuum's profile — open a fund page for stage focus and related deal articles.
Competitive landscape
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IonQ direct
Another public trapped-ion quantum-computing developer.
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Universal Quantum direct
Private developer pursuing modular trapped-ion systems.
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IBM alternative
Uses a different principal hardware architecture; physical-qubit counts are not like-for-like measures.
Industries
Market / IPO context
Ticker: QNT (Nasdaq)
IPO status: public
IPO date: 2026-06-05
Note: The September 2025 financing used a $10B pre-money equity valuation. This is not the current market capitalization. IPO date shown is closing date.
Editorial / static context — not a live quote.
FAQs about Quantinuum
Practical answers founders, operators, and investors typically search for.
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Editorial note: AI tools assisted with research, structure, or drafting. Venture Capital Tracker retains human editorial responsibility for factual accuracy, relevance, and source quality before publication.