As of September 19, 2026, Q-CTRL is private, with no public stock ticker, announced IPO or disclosed valuation. Its expanded Series B raised approximately $113 million.
Pre-IPO quantum computing company profile · Founded 2017 · Sydney, Australia
Company Facts
IPO Status
No IPO announced
Q-CTRL shares are not available on public exchanges. See below for listed alternatives with similar technology.
Facts checked
Q-CTRL shares do not trade on a public exchange. No IPO has been announced and no public valuation has been disclosed.
Q-CTRL announced that its Series B, including extensions, reached approximately US$113 million in October 2024. This is the size of that funding round, not a disclosed valuation or lifetime funding total.
Sources: Q-CTRL Series B funding announcement ↗ · Q-CTRL newsroom ↗
Q-CTRL is the world's leading quantum infrastructure-software company, founded in Sydney by Professor Michael Biercuk. Its error-suppression firmware ("Fire Opal") measurably boosts the performance of existing quantum hardware — IBM offers it natively — while its "Boulder Opal" tools serve hardware R&D teams. It has also built a commercial quantum-sensing division for GPS-denied navigation with defense customers across the US, UK and Australia.
Q-CTRL closed a $113M Series B (including extensions) through 2024 with investors including Salesforce Ventures, Airbus Ventures, DCVC and Sequoia — one of the largest raises for a quantum software pure-play.
| Round | Amount | Date | Key Investors | Valuation |
|---|---|---|---|---|
| Series B (incl. extensions) | $113M | 2023–2024 | Salesforce Ventures, Airbus Ventures, DCVC, Sequoia Capital | — |
| Series A | $22M | 2019 | Sequoia Capital, Main Sequence, Horizons Ventures | — |
No listed pure-play matches the quantum-software-infrastructure model; Q-CTRL's software runs on hardware from IBM and the listed pure-plays.
Related company roadmaps: Official IonQ quantum roadmap · Official Rigetti quantum roadmap
Can you buy Q-CTRL stock?
No. Q-CTRL is private and has not announced an IPO. Its software improves hardware from IBM and others — the listed hardware pure-plays are the closest public exposure.
What does Q-CTRL sell?
Error-suppression software (Fire Opal, embedded in IBM Quantum), hardware R&D tooling (Boulder Opal), and quantum sensors for GPS-denied navigation (Ironstone Opal).
How much has Q-CTRL raised?
About $113M through its Series B and extensions, from Salesforce Ventures, Airbus Ventures, DCVC, Sequoia and others.
More pre-IPO quantum companies
Static profile, updated manually · Last updated 2026-09-19 · Sources: Q-CTRL newsroom ↗