Helium-3 Ventures is a private equity firm and venture capital firm. Based in New York, United States. The known portfolio counts 10 companies, including Apptronik, Runwise, Space Forge, POSH, Princeton NuEnergy and Sage Geosystems.
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Investment focus
Who to pitch at Helium-3 Ventures
Helium-3 Ventures portfolio companies (10)
- Apptronik
- Runwise
- Space Forge
- POSH
- Princeton NuEnergy
- Sage Geosystems
- Skillfully
- Dendra Systems
- Engineered Arts
- Moons
Co-investors
Funds that share portfolio companies with Helium-3 Ventures.
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About Helium-3 Ventures
The firm's listing covers sectors AI, Climate and Hardware, and focus areas Aerospace, Clean Energy, DeepTech and Fusion Energy; known deals cluster at Pre-Seed, Seed and Series A.
The team counts 3 people in our database. John Dauer (Founding Partner) and David Hendrickson (Founding Partner) are shown as the contacts to pitch.
Helium-3 Ventures shares portfolio companies with 20 other investment firms, among them Rockaway Ventures, John Deere and Waterman Ventures.
Frequently asked questions
What is Helium-3 Ventures?
Helium-3 Ventures is a private equity firm and venture capital firm based in New York, United States, with a known portfolio of 10 companies. The portfolio comes from public investment records rather than from the firm, so deals that never surfaced publicly are not in it.
What does Helium-3 Ventures invest in?
Listed sectors include AI, Climate and Hardware; listed focus areas include Aerospace, Clean Energy, DeepTech and Fusion Energy. Those tags come from the portfolio attached to the firm, so they describe what has been backed rather than a stated mandate for what comes next.
What stage does Helium-3 Ventures invest at?
The known deals of Helium-3 Ventures include Pre-Seed, Seed and Series A rounds. Check that against your own round before reaching out: stage mismatch is the most common reason a well matched sector still goes nowhere.
Who should I pitch at Helium-3 Ventures?
2 of the 3 people on file at Helium-3 Ventures are listed as contacts for the firm. All 3 have their own profile page.
How do I contact Helium-3 Ventures?
Any email address on file for the firm is masked on this page and readable inside RaiseHunt after you create an account. The 3 people attached to the firm have their own pages, each showing whether an address is on file for them.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal