Mode VC
California

Rebel Fund

Rebel Fund, based in California, backs generalist Seed startups with checks from $25k to $500k, typically following other investors, as seen in Airbyte and Albedo.

Website
Entry stageSeed
Check size$25K to $500K
Leads roundsMostly follows
FocusGeneralist
Latest fundn/a
Investing team10 peopleNo activity since Sep

Who you would pitch at Rebel Fund

10 people on the investing team, 9 of them partners who can make the call. Partners are listed first.

Dan SirokerPartner (Optimizely Co-founder)
Daniel KanPartner (Cruise Co-founder)He previously co-founded Exec and worked at UserVoice.
Jared HeymanManaging PartnerHe has held his current role since April 2019.
Luis FortuñoManaging DirectorHe previously served as the governor of Puerto Rico and a member of Congress.
Max MullenPartner (Instacart Co-founder)
Sebastian MejiaPartner (Rappi Co-founder)He co-founded Rappi and serves as a partner at Rebel Fund.
Steve HuffmanPartner (Reddit Co-founder)He is also a partner at Rebel Fund and previously co-founded Hipmunk.
Trip AdlerPartner (Scribd Co-founder)He also serves as a partner at Rebel Fund.
Jonathan HirschPartner (Paradigm — biotech)He has founded multiple companies and currently serves as a partner at Rebel Fund.
Justin HilliardPrincipalHe is part of the firm's leadership team, which also includes Jared Heyman, Luis Fortuno, and Alexandra Espinal.

Work here and something is wrong? Ask for a correction.

Writes $25K to $500K checks. Its smallest check is larger than 1% of firms in the atlas.

Bars: how many firms in the atlas report each band. Highlighted: this firm.

No recent activity since September 2026. Quiet does not mean closed.

Weekly count of activity updates. Activity is not a confirmed deal.

Before you pitch

Ownership target< 5%

Notable investments

AirbyteAlbedoArray LabsApollo GroupAxleAviron InteractiveAnchorAndromeda SurgicalAristAiSDR

In their words

Rebel FundRebel Fund invests in the top 10% of Y Combinator startups. Our partners are YC alumni who co-founded companies worth $100B+. 325+ investments to date.www.rebelfund.vc
Founders and investors at a Mode VC gathering

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Raising a pre-seed or seed round? We write $1M to $5M first checks and help founders with distribution. A partner reads every deck.

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Alert me when Rebel Fund is active

One email when this firm shows new activity. Nothing else.

Firms like Rebel Fund

Plug and Play Ventures$25K to $500K · active Sep 23
1414 Ventures$25K to $250K
Acquired Wisdom Fund$25K to $250K
Coelius Capital$100K to $1M · active Oct 6
Okta Ventures$25K to $1M
Polymath Capital$25K to $250K

On these lists

Seed investors in United States2836Seed investors in California699Seed investors3020

Questions

What stage does Rebel Fund invest in?

Rebel Fund reports entry at seed.

How much does Rebel Fund invest?

Rebel Fund reports checks of $25K to $500K.

Does Rebel Fund lead rounds?

Rebel Fund mostly follows other investors.

Who are the partners at Rebel Fund?

Dan Siroker (Partner (Optimizely Co-founder)), Daniel Kan (Partner (Cruise Co-founder)), Jared Heyman (Managing Partner), Luis Fortuño (Managing Director), Max Mullen (Partner (Instacart Co-founder)), Sebastian Mejia (Partner (Rappi Co-founder)).

Is Rebel Fund active right now?

No recent activity since September 2026.

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