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Helium-3 Ventures is a New York-based venture capital firm founded in 2021 that backs founders building transformative, hardware-heavy, and capital-intensive technologies addressing challenges on Earth and beyond. It invests across clean energy, advanced materials, communications, and space exploration.
50% of their portfolio is in Enterprise Software. Their most common stage is series-a (67% of deals). Average disclosed round size is $38.6M (across 5 rounds with reported amounts).
Portfolio
3
Fund Size
—
Top Stage
Series A
Last 12 Mo
0
Team
DH
David Hendrickson
Founding Partner
JD
John Dauer
Founding Partner
MB
Matthew Bellamy
Founding partner
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
6 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 Runwise | Series B | $55M | Jun 2025 |
| Runwise | Series B | $79M | Jan 2025 |
| EEngineered Arts | Series A | — | Dec 2024 |
 Princeton NuEnergy | Series A | $30M | Jun 2024 |
| EEngineered Arts | Series A | $10M | Jan 2024 |
| Runwise | Series A | $19M | Nov 2022 |
Top Co-Investors
Alumni Ventures3 shared
Menlo Ventures3 shared
Fifth Wall2 shared
MassMutual2 shared
Soma Capital2 shared
Multiplier Capital2 shared
Wistron Corporation1 shared
Saban Capital Group1 shared
NextView Ventures1 shared
Notion Capital1 shared
SoGal Ventures1 shared
Verve Ventures1 shared
The Cannon Project1 shared
MCJ1 shared
Notation Capital1 shared
MCJ Collective1 shared
Initialized Capital1 shared
Wasserman Ventures1 shared
Silence VC1 shared
Last updated: 19 September 2026