• Rebel’s mission is to invest in the best 0.1% of the 30,000+ tech startups that apply each year to Y Combinator, the #1 accelerator in the world with 80+ unicorns and $600B+ in portfolio company value. The fund’s due diligence and investing decisions are made by a team of accomplished Y Combinator alumni who have founded companies now valued over $85B in aggregate, invested in 200+ startups, and generated top one-percentile portfolio returns. Rebel utilizes a proprietary machine-learning algorithm called Rebel Theorem to help validate and screen potential investments, building a diversified portfolio of top Y Combinator startups that is statistically powered to outperform.


    A team of top Y Combinator alumni who have co-founded companies now valued over $85B in aggregate and support Rebel’s due diligence, investment decisions, and portfolio support part-time while running their respective companies.

    Steve Huffman


    YC S05

    Daniel Kan


    YC W14

    Max Mullen


    YC S12

    Trip Adler


    YC S06

    Jonathan Hirsch


    Non-YC biotech partner

    Sebastian Mejia


    YC W16


    Our Managing Partner is a successful serial entrepreneur turned top-decile 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 and led companies to successful exits, and as an investor, built venture funds that have seeded technology startups now valued at over $10B in aggregate.

    Jared Heyman

    Managing Partner

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


  • Knowledge sharing

    On the Y Combinator “premium” (2022 update)

    One of the most common complaints I hear amongst Y Combinator startup investors is their sky-high valuations. It’s not uncommon for YC startups to raise capital at 2-3 times the valuation of their non-YC... read more

    On the life and death of Y Combinator startups

    I’ve written much over the years about the incredible success of Y Combinator startups, but as any experienced startup founder or investor knows, there is a dark side to technology innovation… lots of startups just don’t... read more

    On YC startup exits


    As a venture capital fund manager, one of the questions I’m asked most often by LPs is “How long will it take to get my money back?” At Rebel Fund, our job is to invest in the top 5–10% of new Y Combinator... read more

    On 101 Y Combinator unicorns


    In August 2022, Y Combinator released its latest Top Companies list, now including 314 private and 16 public YC startups each valued at over $150M. YC officially reported ‘over 80’ of these startups to be valued at over $1B, but our best estimate is there are... read more

    On Rebel Theorem 2.0


    A couple of years ago I published On Rebel Theorem to reveal the proprietary machine-learning algorithm we use at Rebel Fund to maximize our odds of success investing in tomorrow’s top Y Combinator startups. We’ve recently finished a complete overhaul of the algorithm and... read more

    On the Y Combinator Summer 2022 batch

    Last year I published an in-depth analysis of the Y Combinator Summer 2021 batch that was later shared by YC itself! I’ll repeat the tradition this year for the Summer 2022 (S22) batch, since we’re in an excellent position to do so at Rebel Fund after collecting over.... read more

    On the rapid internationalization of Y Combinator startups

    In my last post On Y Combinator batch quality at scale we looked at the dramatic increase in the number of YC startups over the years and how batch quality has held up. Anyone who has been to YC demo.... read more

    On Y Combinator batch quality at scale


    Since Rebel Fund invests exclusively in Y Combinator startups (with 80 YC startup investments to date) I’m often asked by other investors what I think about YC’s quickly growing batch sizes. Since I’ve.... read more

    On portfolio strategy and unicorn catching


    In my previous post On $600B of Y Combinator Startup Success I discussed our analysis of the 271 companies on Y Combinator’s latest Top Companies list, which now total over $600B in value. A recurring theme.... read more

    On $600B of Y Combinator Startup Success

    Last year I published a popular blog post On $300B of Y Combinator Startup Success that analyzed YC’s Top Companies list that year, which included 137 portfolio startups with a combined valuation of over $300B. YC recently published an updated Top Companies list... read more

    On the $500k Y Combinator standard deal

    The big news today in the Y Combinator ecosystem is that YC announced a new “standard deal” of $500k for each new startup. This will be structured as a $125k check for 7% equity + $375k check on an uncapped SAFE with an MFN. For the unitiated, you can... read more

    On the Y Combinator Summer 2021 batch

    At Rebel Fund, our job is to invest in the top 3–4% startups in each new Y Combinator (YC) batch. To accomplish this, we build what we believe to be the most comprehensive database that exists of YC startups — including over 60,000 data points on... read more

  • Event PHOTOS

    Annual General Meeting 2022

    San Francisco, California

    LP Wine Tasting Event 2022

    Napa Valley, California

  • portfolio

    Rebel has made 100+ investments to date across a wide variety of technology verticals

    AccessOwl (S22)

    Okta for Startups

    Airbyte (W20)

    Unlocking ad-blocked traffic across all your tools

    Albedo (W21)

    Albedo captures the highest resolution satellite imagery

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

    A proprietary feed additive that stops methane emissions from cattle

    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.

    Anfin (W22)

    Stock trading and wealth management for Vietnam

    Arist (S20)

    Workforce training via text message

    Quality Assurance platform for Machine Learning Systems

    Array Labs (S22)

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

    Aviron is high-intensity Peloton for rowing

    Axle (S22)

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

    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

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

    Cerrion (S22)

    Helps manufacturers automatically detect problems on their production lines using Computer Vision

    India's one-stop Telemedicine Platform & Online Pharmacy for Dermatology

    Diagnosing Alzheimer’s 3x more accurately than a doctor - all from your cellphone

    Creizer (W22)

    We provide revenue-based financing to online sellers

    Crew (S21)

    Modern all-in-one recruiting CRM that helps you hire the A players

    We are building crypto wallet for the next billion users without the necessity to be a crypto geek

    Online counseling designed for teens

    Drapr (S20)

    We let shoppers try on clothing online

    Drip (S22)

    Drip is Klarna for Brazil, built on Pix

    Dropezy (W22)

    We are a daily needs platform that guarantees 15 minutes deliveries using a network of dark stores

    Dr. Treat (S22)

    Tech-enabled modern veterinary designed to give your pet highly personalized care

    Earth AI (S19)

    EARTH AI is the world’s most efficient mineral explorer

    Embrace (S19)

    Mobile teams find, recreate and fix every error easily

    Enable.us (W21)

    B2B Hub for Virtual Selling

    Evoly (S22)

    Makes smart electric and water meters as a service

    Finblox (W22)

    A crypto neobank for the emerging markets

    Flat.mx (S20)

    We're the Opendoor of Mexico

    Fleek (W22)

    B2B wholesale marketplace for second-hand fashion

    We make it easy for developers to deploy scalable, secure applications without any devops

    Flowly (S21)

    The VR version of Calm with a focus on reducing chronic pain for 100 million Americans

    Fly.io (W20)

    Fly.io runs app servers close to users

    Fynn (W20)

    ISAs for Trade Schools

    Greywing (W21)

    Greywing automates crew changes and vessel operations

    Gridware (W21)

    Makes hardware devices that help utilities identify when and where power lines will cause wildfires

    GroMo (W21)

    GroMo is an app for agents to sell insurance in India

    Gullak is a mobile app that automates savings & invests these in Gold

    Supporting companies to recruit their slow-skilled talents at scale in no time

    We build technology and tools for traders.

    Building underwater robotics vehicles which collect battery metals without harming the environment

    InEvent (S19)

    Advanced event software for enterprises

    Invofox (S22)

    Automatic data extraction from invoices

    Jeeves (S20)

    International infrastructure built from scratch, starting with corporate cards for startups in Mexico, Canada and UK

    Jestor (S21)

    No-code tool for operations teams

    Juno (S19)

    A coding school for underemployed university graduates

    A bank account and credit card for Canadian SMBs

    Khabri (S19)

    Audio platform for education serving non-english users

    Grocery and everyday essentials app in Pakistan

    Laskie (W21)

    Enterprise platform for professional services

    Lofty AI (S19)

    We help people buy homes with Zero risk

    MadEats (S21)

    Building high quality internet food brands engineered for delivery

    We are 'Salesforce' for retail distribution in Africa

    Mercator (S22)

    Mapping tools for vehicle fleets

    Momentu (S22)

    Corporate mental health platform for Latin America

    Mudafy (S19)

    Compass for Latin America

    Largest dermatology virtual clinic in LATAM

    Novig (S22)

    The first commission-free, high-frequency sports betting exchange

    Building Gong.io for offline retail

    Shortening the supply chain between restaurants and wholesalers

    Banking as a Service provider for Latam

    Payflow (S21)

    A mobile app that allows employees to get paid their salary on-demand

    Peakflo (W22)

    We streamline receivables and payables for growing SMBs in SE Asia

    Philippo (W22)

    We provide homeowners in Latam access to their home equity.

    Pillar (S21)

    Health coaching as a service

    Performance ads & discovery for marketplaces

    Queenly (W21)

    Best way to help women find the exact dress they are looking for

    Recall.ai (W20)

    Recall is Plaid for voice and video intelligence.

    DNA Diagnostics and Deep insights, IVF clinics, Research

    Rider (W22)

    Rider is modern parcel delivery for Pakistan.

    Provides a React State Management Library and infrastructure for building real-time collaboration

    We are Gusto for India

    SaveIN (W22)

    SaveIN is Buy now, Pay later for healthcare in India

    Seabound (W22)

    We capture CO2 emissions from ships

    Pricing intelligence for healthcare providers

    Sequin (S21)

    A debit card that builds credit for women

    Helps you know your body and guides you to live a healthier and more beautiful life

    Sitenna (S21)

    We connect the market by mapping assets and using workflows to speed up the process

    Slauth.io (S22)

    Access management platform to secure the cloud

    Stackshine automates software management operations for IT teams

    Starling (W22)

    Remote patient monitoring of urine

    1000x faster cloud compute

    Full-stack telehealth for neurodegenerative disease

    Together (S19)

    Enterprise SaaS to run an internal employee mentoring programs

    Datadog for analytics and marketing teams

    Tranch (S22)

    We’re a buy now pay later solution for SaaS and Services

    Trusty (W22)

    Private MLS for exclusive off-market real estate

    Turing (W20)

    Replace consumer brand's formulation testing loop development with our software

    Typewise (S22)

    Text prediction to boost productivity in customer service and sales

    Leading wine e-commerce company that is changing the way wine is bought and sold

    Sells homes directly to buyers -- they can tour any time and buy online with peace of mind

    We are an enterprise software that helps companies track and reduce their carbon emissions, focusing in Asia

    Vahan (S19)

    Building a full-stack labor marketplace for the gig-economy in India

    API to verify and monitor healthcare licenses

    WareIQ (S20)

    Amazon-prime like logistics for online brands in India

    AI-powered copywriting and content marketing

    Wyvern (W22)

    High-res images from space to measure natural resources and crop health.

    Yassir (W20)

    Leading Super App for French Speaking Africa

    Z1 (W21)

    Digital bank for teenagers in LatAm

    Zuma (S21)

    Sales engagement platform that helps businesses create the fastest conversion experience for any internet lead

    Zywa (W22)

    Neobank for teenagers in the Middle East and North Africa

  • 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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