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Quantinuum

Trapped-ion systems and quantum software; Honeywell-backed category leader.

Trapped IonSeries D+ Pre-IPOIPO H2 2026IPO tracker & how to invest early →Broomfield · Founded 2021Website ↗
89
▲ 0.9
#1 of Trapped Ion

Quant Score history

89 1.9 since 2026

What they do

Quantinuum is the trapped-ion quantum computing company formed by the merger of Honeywell Quantum Solutions and Cambridge Quantum. Its H-series systems are known for record quantum-volume results, high fidelity and mid-circuit measurement, and it pairs hardware with software including the TKET compiler and cybersecurity and AI products.

Majority-owned by Honeywell, Quantinuum is widely viewed as one of the most likely near-term IPO candidates in the sector.

Strengths & weaknesses

Strengths
  • +Record quantum-volume and fidelity benchmarks in trapped-ion hardware
  • +Full-stack: leading hardware plus TKET software and applications
  • +Backing and majority ownership by Honeywell provides stability and capital
Watch-outs
  • Trapped-ion gate speeds trail superconducting approaches
  • Still pre-profit and dependent on continued strategic funding
Key risks
  • !IPO timing and valuation subject to market conditions
  • !Scaling ion-trap qubit counts remains a hard engineering challenge

Score breakdown

Funding momentum 40%84

€280m Growth, Jan 2024.

Patents 25%95

95th percentile within Trapped Ion.

Talent 20%82

~550 employees.

Research 15%94

94th percentile within Trapped Ion.

Funding history

€800m total raised · rounds below sum to €280m (includes undisclosed rounds)

Growth€280m
Jan 2024 · Led by JPMorgan Chase

Management

Rajeeb Hazra
President & Chief Executive Officer

Major shareholders

Honeywell· Strategic54.0%
Strategic & venture investors· VCundisclosed

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Links & resources

Company websiteTKET documentation

Sources: Dealroom · EPO · USPTO · arXiv · Company filings — Updated weekly · ▲ 0.9 (30d)