Key facts
- Quantum Circuits’s last known valuation is $550.0M (Jan 2026).
- It has raised $125.4M across 1 recorded rounds; the latest was Early Stage VC ($26.6M) in Feb 2024.
- Notable investors include Sequoia Capital, In-Q-Tel, F-Prime Capital, TriplePoint Capital, Connecticut Innovations — 12 tracked in total.
- Quantum Circuits has filed 3 Form Ds with the SEC since 2016, most recently May 2024 ($26.6M sold to 15 investors).
- Status: Acquired/Merged (Operating Subsidiary).
- ·Post-money valuations for all 1 rounds
- ·The complete investor list — 12 names
- ·Watchlist + deal alerts for Quantum Circuits
Funding rounds
1 roundsAbout Quantum Circuits
Manufacturer of quantum computers intended to accelerate research and enable the scaling of quantum computing. The company's computers utilize superconducting devices with a quantum circuit model for computation and an integrated error correction system, enabling clients to perform error-free calculations using solid-state quantum bits or qubits.
- Sector
- Information Technology
- HQ
- New Haven, CT, United States
- Founded
- 2015
- Employees
- 50
- Website
- quantumcircuits.com/
- Ownership
- Acquired/Merged (Operating Subsidiary)
Quantum Circuits doesn't have a composite mark yet — a PA Mark is published once enough pricing inputs exist (trade prints, fund marks, round prices). The rest of the record below builds toward it.
Recorded secondary trades
No secondary trades in Quantum Circuits shares have been recorded yet. When a print lands — third-party, direct report, or platform — it appears here with structure, source, and price.
Institutional fund marks
No SEC-registered fund has reported a fair-value mark on Quantum Circuits in its N-PORT filings yet. We sweep new filings monthly.