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 $600B+ 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 100% deal win rate, typically pre-Demo Day. The fund utilizes a proprietary machine-learning algorithm called Rebel Theorem 3.0 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

Annual General Meeting 2024

Annual General Meeting 2024

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

LP Wine & Olive Oil Tasting Event 2024

Napa Valley, California
Annual General Meeting 2023

Annual General Meeting 2023

San Francisco, California
LP Wine Tasting Event 2023

LP Wine Tasting Event 2023

Napa Valley, California
LP Wine Tasting Event 2022

LP Wine Tasting Event 2022

Napa Valley, California
Annual General Meeting 2022

Annual General Meeting 2022

San Francisco, California

Testimonials

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

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

I appreciated the conversation with Max a lot, and we like how you think and operate. We would love for you and Rebel Fund to be a part of our journey!

David Krakov
David Krakov
Honeydew

We're really excited to be part of the team! Jared and Jonathan have been great and super easy to work with, absolutely zero complaints or negative feedback on our end

Justin Spitz
Justin Spitz
Wattson Health

The Rebel process was unmatched. It's founder friendly, quick, thoughtful and very straight forward. There was really nothing I could critique. Would highly recommend Rebel to any of my founder friends.

Saif Abuhashish
Saif Abuhashish
Reform

We were fortunate to have you on our side. Your fundraising guidance was invaluable to us! Furthermore, your assistance with investor connections was always prompt and of high quality. You are one of the best investors any founder can collaborate with!

Pulkit Sharma
Pulkit Sharma
Khabri

The process was great. Thanks for the offer, Rebel’s portfolio and team are super impressive

Matt Aitken
Matt Aitken
Trigger.dev

It was a pleasure meeting Jonathan Hirsch and Michelle last week - the experience was smooth and efficient. Also, founders outside of Bookface also had great things to share about their experience - all great signs.

Aditya Sharma
Aditya Sharma
Untether Labs

We definitely want you in, so we'll make an exception and go over our 'do not exceed' max of $5M to make it work. You guys will be the last ones in. Really excited to work with you, have no doubt you'll add huge value

Nick Damiano
Nick Damiano
Andromeda Surgical

Dan 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, so I have nothing to say that can be improved so far!

Luciana Reznik
Luciana Reznik
Cedalio

Portfolio

Rebel has made 200+ 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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