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Rebel Fund is a data‑driven seed-stage venture fund that exclusively backs Y Combinator startups, using a proprietary ML engine (Rebel Theorem 4.0) and a team of YC‑alumni founders to identify standout companies—often pre‑Demo Day. Led by Jared Heyman alongside partners from Reddit, Instacart and Cruise, Rebel has made 240+ investments and leverages the world’s most comprehensive YC startup database to build diversified, statistically powered portfolios.
Invests In
Pre-Seed
Pre-Seed
Avg Check sIZE
Fund Size
Location
San Francisco, CA
Leads Rounds?

What they Invest In

AI
Software
Health / Bio
Defense
Aerospace
Transportation

Notable Investments

Perseus Defense
Orbital Operations
Albedo
Wyvern Space

Press

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Q&A

Larsen
Jensen
Watch Interview

What's common Advice that Founders receive that is flat out wrong?

"Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip"

Larsen Jensen
GP, Harpoon Ventures

What's common Advice that Founders receive that is flat out wrong?

"Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip"

Larsen Jensen
GP, Harpoon Ventures

What's common Advice that Founders receive that is flat out wrong?

"Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip"

Larsen Jensen
GP, Harpoon Ventures

What's common Advice that Founders receive that is flat out wrong?

"Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip"

Larsen Jensen
GP, Harpoon Ventures
Rebel Fund
Invests In
Pre-Seed
aVG. cHECK sIZE
lEADS ROUNDS?
lOCATION
San Francisco, CA
Notable Investments
Perseus Defense
Orbital Operations
Albedo
Wyvern Space