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Mitsui & Co.

Active VC
Portfolio Active
1
Latest Quantinuum
Deal flow
$900M
2 rounds
Unicorns
1
≥ $1B valuation
Founded
—
Latest
Sep 2025
Quantinuum

About Mitsui & Co.

Venture capital firm tracking 1 AI investment, with focus on AI + Quantum and US startups. Total tracked deal flow: $900M.

Investment activity

2024–2025
$300M
$600M
1
'24
1
'25

Sector focus

⚛️ AI + Quantum 2
🏢 AI Infrastructure 2

Geographic focus

US 1

Portfolio

1

Quantinuum

World's largest integrated quantum computing company

Co-investors

6

Amgen

2 shared

JPMorgan Chase

2 shared

Honeywell

2 shared

Quanta Computer

1 shared

QED Investors

1 shared

NVentures (NVIDIA)

1 shared

Recent rounds

2
Sep 4, 2025 Equity Round $600M Quantinuum
Jan 16, 2024 Equity Round $300M Quantinuum