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Rebel Fund

North America, California, United States, Calabasas

Description

Rebel Fund is a distinctive venture capital firm based in Calabasas, United States, that has carved out a unique niche by exclusively investing in companies emerging from the Y Combinator (YC) accelerator program. Its operational model is powered by an extensive and elite network of over 1,000 Y Combinator alumni, leveraging their collective experience and connections to support the next generation of founders.

The fund primarily focuses on pre-seed and seed-stage companies, aiming to be a crucial early partner for these high-potential startups. Rebel Fund maintains a consistent investment strategy, typically deploying a standard first check of $150,000 into each YC company it backs. This focused approach allows them to streamline their investment process and provide reliable early capital to founders.

Rebel Fund positions itself as a significant player within the YC ecosystem, claiming to be the largest investor in YC companies outside of Y Combinator itself. Beyond the initial capital, the firm emphasizes providing "smart money" by connecting portfolio companies with its vast alumni network. This includes offering mentorship, strategic guidance, and facilitating introductions to potential follow-on investors, customers, and key industry contacts.

Their model underscores the power of community and shared entrepreneurial experience, creating a supportive environment designed to accelerate the growth and success of their portfolio companies. By concentrating solely on YC alumni, Rebel Fund has built a specialized platform that aims to maximize the chances of success for founders within this highly competitive startup landscape.

Investor Profile

Rebel Fund has backed more than 204 startups, with 54 new investments in the last 12 months alone. The firm has led 6 rounds, about 3% of its total and boasts 6 exits across its portfolio.

Investment Focus Highlights

  • Concentrates on Seed, Pre Seed, Series A rounds (top funding stages).
  • Majority of deals are located in United States, India, Canada.
  • Strong thematic focus on Software, Artificial Intelligence (AI), Information Technology.
  • Typical check size: $150K.

Stage Focus

  • Seed (85%)
  • Pre Seed (10%)
  • Series A (4%)

Country Focus

  • United States (62%)
  • India (5%)
  • Canada (4%)
  • Mexico (2%)
  • United Kingdom (2%)
  • Indonesia (2%)
  • Switzerland (2%)
  • Nigeria (2%)
  • Pakistan (2%)
  • Singapore (1%)

Industry Focus

  • Software
  • Artificial Intelligence (Ai)
  • Information Technology
  • Health Care
  • Financial Services
  • Fintech
  • E-commerce
  • B2b
  • Saas
  • Internet
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FAQ

Frequently Asked Questions

Learn who this investor regularly partners with—both firms and angels—and explore their latest activity.

Who does Rebel Fund frequently co-invest with?

Gaingels
North America, Vermont, United States, Burlington
Co-Investments: 6
Soma Capital
North America, California, United States, San Francisco
Co-Investments: 23
Hi2 Venture Fund
North America, New York, United States, New York
Co-Investments: 6
Liquid 2 Ventures
North America, California, United States, San Francisco
Co-Investments: 23
Y Combinator
North America, California, United States, Mountain View
Co-Investments: 128
Pioneer Fund
North America, California, United States, San Francisco
Co-Investments: 29
Unpopular Ventures
North America, California, United States, San Francisco
Co-Investments: 11
Global Founders Capital
Europe, Berlin, Germany, Berlin
Co-Investments: 6
TRAC
North America, California, United States, San Francisco
Co-Investments: 12
Goodwater Capital
North America, California, United States, Burlingame
Co-Investments: 11

Which angels does Rebel Fund often collaborate with?

EL
North America, Florida, United States, Miami Beach
Shared Deals: 4
QY
North America, California, United States, San Francisco
Shared Deals: 2
JP
North America, California, United States, San Francisco
Shared Deals: 4
AF
North America, California, United States, San Francisco
Shared Deals: 9
Kunal Shah
Asia, Karnataka, India, Bengaluru
Shared Deals: 2
AR
North America, California, United States
Shared Deals: 3
OJ
Europe, England, United Kingdom, London
Shared Deals: 4
AA
North America, California, United States, San Francisco
Shared Deals: 6
KT
North America, California, United States, San Francisco
Shared Deals: 4
NM
North America, South Carolina, United States, Charleston
Shared Deals: 3

What are some of recent deals done by Rebel Fund?

Modelence

San Francisco, California, United States

Modelence is a Software Development firm offering typeScript cloud services AI apps production.

Developer PlatformDeveloper ToolsInformation TechnologySoftwareWeb Apps
SeedJan 28, 2026
Amount Raised: $3,000,000
Wavedash

San Francisco, California, United States

High-quality PC games in the browser

GamingInformation TechnologyInternetMarketplaceSoftware
SeedDec 15, 2025
Amount Raised: $3,800,000
Cortex AI

San Francisco, California, United States

Cortex AI is engaged in robotics engineering, which develops models that power general-purpose robots.

Artificial Intelligence (AI)ManufacturingMechanical EngineeringRobotics
SeedDec 3, 2025
Amount Raised: $6,000,000
Thesis Labs

San Francisco, California, United States

Thesis Labs builds AI-driven systems that support scientists and researchers in discovering, inventing, and refining ML models.

Artificial Intelligence (AI)Information TechnologyMachine Learning
SeedDec 3, 2025
Bravi

Cholet, Pays de la Loire, France

Bravi offers an AI‑powered voice and chat assistant that handles lead qualification, appointment booking, and CRM integration.

Artificial Intelligence (AI)B2BBusiness Process Automation (BPA)CRMEnterprise ApplicationsHome ServicesInformation TechnologyLead GenerationManufacturingWeb Apps
SeedDec 3, 2025
Kaigo Health

San Francisco, California, United States

Kaigo Health offers AI-driven post-discharge follow-up and remote patient monitoring for Medicare populations.

Artificial Intelligence (AI)ComplianceHealth CareInformation Technology
SeedDec 3, 2025
Leadbay

San Francisco, California, United States

Leadbay is an AI powered B2B sales prospecting platform that automates the discovery and qualification of SMB leads.

Artificial Intelligence (AI)B2BSales
SeedDec 3, 2025
Amount Raised: $500,000
Cranston AI

San Francisco, California, United States

Cranston AI offers an AI-powered platform for accounting and bookkeeping services.

AccountingArtificial Intelligence (AI)B2BBookkeeping and PayrollFinancial ServicesFinTechInformation TechnologySaaSWeb Apps
SeedDec 3, 2025
Play Health

Boulder, Colorado, United States

Play Health offers a perimenopause care app with hormone testing and personalized health guidance for women.

AppsBiometricsBiotechnologyHealth CareWellnessWomen's
SeedDec 3, 2025
Moss

San Mateo, California, United States

Real-time semantic search for Conversational AI

Artificial Intelligence (AI)Developer ToolsSemantic Search
SeedDec 3, 2025

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