Fueling the Future of Innovation

Rebel aims to invest in the top 10% of startups (top 0.1% of applicants) from Y Combinator, the #1 accelerator in the world with 90+ unicorns and $800B+ in portfolio company value.

Fueling the Future of InnovationFueling the Future of Innovation

About Us

Rebel’s investing partners are accomplished Y Combinator alumni who have co-founded companies now valued at over $100B in aggregate — including Reddit, Instacart, Cruise, Gusto, Scribd, Rappi, and more — and together invested in over 200 startups with top-decile portfolio returns. Rebel has unique access to top Y Combinator startups with a nearly >98% deal win rate, typically pre-Demo Day. The fund utilizes a proprietary machine-learning algorithm called Rebel Theorem 4.0 to help validate and screen potential investments, building a diversified portfolio of Y Combinator startups that is statistically powered to outperform.

About US

Rebel Partners

A team of top Y Combinator alumni who have co-founded companies now valued over $100B in aggregate.

Steve Huffman

Steve Huffman

Reddit
YC S05
Daniel Kan

Daniel Kan

Cruise
YC W14
Max Mullen

Max Mullen

Instacart
YC S12
Trip Adler

Trip Adler

Scribd
YC S06
Jonathan Hirsch

Jonathan Hirsch

Paradigm
Non-YC biotech partner
Sebastian Mejia

Sebastian Mejia

Rappi
YC W16
Dan Siroker

Dan Siroker

Optimizely
YC W10

Rebel Managing Partner

Our Managing Partner is a successful serial entrepreneur turned Silicon Valley venture fund manager, bringing decades of technology startup operating and investing experience to support our portfolio founders. As a founder, he's built startups backed by the world's top venture capital funds including Y Combinator, a16z, NEA, Khosla, Greylock and more, and led multiple companies to a successful exit. As an investor, he’s built venture funds that have seeded technology startups now valued at over $20B in aggregate.

Jared Heyman
Jared Heyman

Co-Founder of Infosurv & Intengo (acq LON:NFC), CrowdMed (YC W13), Pioneer Fund & Rebel Fund

Knowledge Sharing

Event Photos

LP Wine & Olive Oil Tasting Event 2025

LP Wine & Olive Oil Tasting Event 2025

Annual General Meeting 2025

Annual General Meeting 2025

San Francisco, California
LP Wine & Olive Oil Tasting Event 2024

LP Wine & Olive Oil Tasting Event 2024

Napa Valley, California
Annual General Meeting 2024

Annual General Meeting 2024

San Francisco, California
LP Wine Tasting Event 2023

LP Wine Tasting Event 2023

Napa Valley, California
Annual General Meeting 2023

Annual General Meeting 2023

San Francisco, California
Annual General Meeting 2022

Annual General Meeting 2022

San Francisco, California
LP Wine Tasting Event 2022

LP Wine Tasting Event 2022

Napa Valley, California

Testimonials

Rebel's virtual sessions and programming are a great differentiator vs. other funds.

Rafiq Ahmed
Rafiq Ahmed
Serif Health

I really appreciate that Rebel consistently delivers useful and relevant materials and webinars.

Jeffrey Lange
Jeffrey Lange
Scanbase

Rebel Fund is the only fund consistently hosting relevant webinars that genuinely impact our journey as startup founders—reminiscent, in many ways, of the support we experienced during our YC Batch.

Juan Luis Pérez
Juan Luis Pérez
Milio

I thought the process was incredibly smooth. I also loved that Eddie [from Rebel] was already prepped and came to the call with great questions/context/etc. I would highly recommend Rebel to every other YC Founder.

Simon Ooley
Simon Ooley
Veles

I only have great words about both the investing process and the support from Rebel so far.

Ianai Urwicz
Ianai Urwicz
Infinia

We're really excited to be part of the team! Jared and Jonathan [from Rebel] have been great and super easy to work with.

Justin Spitz
Justin Spitz
Wattson Health

The Rebel process was unmatched. It's founder friendly, quick, thoughtful and very straight forward. Would highly recommend Rebel to any of my founder friends.

Saif Abuhashish
Saif Abuhashish
Reform

The process was great. Rebel’s portfolio and team are super impressive.

Matt Aitken
Matt Aitken
Trigger.dev

It was a pleasure meeting Jonathan Hirsch and Michelle [from Rebel] last week - the experience was smooth and efficient. Founders outside of Bookface also had great things to share about their experience with Rebel - all great signs.

Aditya Sharma
Aditya Sharma
Untether Labs

Dan [from Rebel] was one of my most memorable conversations. We love working with investors who are founders themselves, as they just 'get it’.

Katherine Wang
Katherine Wang
PartnerHQ

The Rebel investment process is amazing and actually inspired many of the future engagements we had with other funds. Looking forward to building the future together!

Ohad Navon
Ohad Navon
Octo

Regarding the process, it was one of the best experiences I’ve had so far. Transparent, efficient, founder friendly and value added from day one!

Luciana Reznik
Luciana Reznik
Cedalio

Portfolio

Rebel has made 240+ investments to date across a wide variety of technology verticals

AccessOwl (S22)

Okta for Startups

Airbyte (W20)

Airbyte (W20)

Albedo (W21)

Albedo captures the highest resolution satellite imagery

Aleph Solutions (S21)

Allows brands to fully address the main challenges related to e-commerce

Alga Biosciences (W22)

A proprietary feed additive that stops methane emissions from cattle

Algen Biotechnologies (W20)

Using CRISPR to find treatments for cancer

Alt Tex (S22)

ALT TEX creates biodegradable and carbon neutral textiles engineered from food waste

Amiloz (W22)

Tech enabled inventory supplier for corner stores in LatAm

Anchor (S22)

Banking-as-a-service & embedded finance platform for Africa

Andromeda Surgical (S23)

We're building the "Nintendo of surgery"

Anfin (W22)

Stock trading and wealth management for Vietnam

Apollo Group (W23)

Managed marketplace for back-office services

Arist (S20)

Workforce training via text message

Armilla AI (W22)

Quality Assurance platform for Machine Learning Systems

Array Labs (S22)

Building satellites to create the first real-time high-resolution map of the world

Atla (S23)

Building helpful and honest AI assistant for legal teams

Aviron Interactive (W21)

Aviron is high-intensity Peloton for rowing

Axle (S22)

Axle is “Plaid for Insurance”, focused on auto insurance to start

Axle Health (W21)

Enables any healthcare organization to send health professionals in-home

Bamboo (W20)

We're building Fidelity for Africa

Bend (S22)

Track companies as they cut carbon, and measure your supply chain footprint

Betterhalf (W21)

India's first and only Marriage Super App for 100M people

Capi Money (S23)

Helping businesses in Africa pay their international suppliers

Cedalio (S23)

The easiest way to store auditable and traceable data

Contact Us

Rebel Fund only invests in Y Combinator-backed startups and does not respond to unsolicited investment offers. Founders can apply to Y Combinator here.

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