![Joseph Fitzsimons](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
Net worth: 261 M $ as of 2026-05-30
Joseph F.
Fitzsimons is the founder of Horizon Quantum Computing Pte Ltd., founded in 2018, where the title held is Chief Executive Officer & Director.
Dr. Fitzsimons currently holds the position of Chairman & Chief Executive Officer at Horizon Quantum Holdings Ltd., starting in 2026.
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
100% | 2026-04-13 | 19,744,585 ( 100% ) | 261 M $ | 2026-05-30 |
| Companies | Position | Start |
|---|---|---|
Horizon Quantum Computing Pte Ltd.
 Horizon Quantum Computing Pte Ltd. Information Technology ServicesTechnology Services Develops software tools for quantum computers | Founder | 2017-12-31 |
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| Private companies | 1 |
|---|---|
Horizon Quantum Computing Pte Ltd.
Horizon Quantum Computing Pte Ltd. Information Technology ServicesTechnology Services Develops software tools for quantum computers | Technology Services |
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