Horizon Quantum Computing
formerly Horizon Quantum Holdings Ltd.IPOProgram quantum computers in classical languages.
Public · Singapore, Singapore · Founded 2020 · $130.1M raised
- Headquarters
- Singapore
- Employees
- 11–50
- Founded
- 2020
- Business Model
- B2B
- Website
- horizonquantum.com
- Total Funding
- $130.1M
- Last Round
- $110.0M Growth EquityDec 2025
- Rounds
- 5
- Type
- Public
Totals include recorded grants and other qualifying funding, not just equity. What counts toward funding.
About
Horizon Quantum Computing develops software tools and an integrated development environment (Triple Alpha) that enable programmers to write quantum applications using classical languages like C and C++. Founded in 2020 and headquartered in Singapore, the company draws talent from Oxford, MIT, and Caltech to make quantum programming accessible to conventional software developers. In late 2025, Horizon became the first quantum software company to own and operate its own quantum computer.
Summary
Horizon Quantum Computing is a Developer Tools company based in Singapore, Singapore, founded in 2020. It has raised $130.1M in total across 5 rounds, most recently a $110.0M Growth Equity round in Dec 2025. Investors include IonQ, Sequoia Capital and Abies Ventures.
Tech & App Stack
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Funding & Exit History
Dec 2025
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Funding: Seed through Growth Equity. Amounts, valuations, and investors where available.
Investors
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