# Quantinuum

> Public quantum-computing company combining trapped-ion processors with quantum software.

## Why it 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.

## Profile

- **Latest funding:** Private capital raise — Approximately $600M (September 4, 2025)
- **Latest known valuation:** $10B pre-money equity valuation (September 4, 2025)
- **Total disclosed equity funding:** Not publicly disclosed
- **Stage:** public
- **Status:** public
- **Industries:** quantum-computing
- **Coverage:** full
- **Last updated:** 2026-10-26
- **Latest funding investors:** Quanta Computer, NVentures, QED Investors, MESH, Korea Investment Partners, JPMorgan Chase, Mitsui, Amgen, Cambridge Quantum Holdings, Serendipity Capital, Honeywell

## Funding history

- IPO closing — public equity, not a venture round · $1.68B gross proceeds; 28M new shares at $60 · June 5, 2026
  Source: https://www.quantinuum.com/press-releases/quantinuum-announces-closing-of-upsized-initial-public-offering
- Private capital raise · Approximately $600M · September 4, 2025
  Source: https://www.quantinuum.com/press-releases/honeywell-announces-600-million-capital-raise-for-quantinuum-at-10b-pre-money-equity-valuation-to-advance-quantum-computing-at-scale

## Investors in our directory

- https://venturecapitaltracker.com/fund/nventures

## Related articles

- https://venturecapitaltracker.com/2026-quantum-computing-funding-landscape-investors-startups
- https://venturecapitaltracker.com/quantum-computing-investors-funds-and-portfolio-companies
- https://venturecapitaltracker.com/quantinuum-ipo-funding-history

**By:** [Venture Capital Tracker](https://venturecapitaltracker.com/editorial-policy)
**Last updated:** October 26, 2026

**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.

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Source: https://venturecapitaltracker.com/startup/quantinuum