Investors / United States / Rebel Fund
Rebel Fund
Venture capital · San Juan, PR, United States · North America
Rebel Fund invests in startups from the Y Combinator accelerator, using a proprietary machine-learning model called Rebel Theorem 5.0 to screen potential investments. Its investing partners are Y Combinator alumni who have co-founded companies and previously invested in over 325 startups.
Invests inAI & Machine LearningFintech
In its own wordsy combinatorhealthcareaifintechlogisticsdeveloper tools
Your fit with Rebel Fund
Four questions about your startup
See how your round matches what it backs, point by point.
Or find every investor that fitsRebel Fund lists 68 checked portfolio companies on its own site and is named in 14 funding rounds. Its most frequent entry is Seed, 71% of the companies with a known first round. Its largest themes are AI & Machine Learning (33%), Fintech (17%) and Healthcare & Biotech (12%). 80% of its companies are based in United States. It invests most often alongside Y Combinator, Soma Capital and Eight Capital.
Counts come from funding rounds that name Rebel Fund, complete from mid-2025: earlier rounds appear only when they were reported later. Round amounts and full round histories are on Fundup AI.
Round figures show recent activity, not Rebel Fund's whole history. Rounds on record name 14 companies; its own site lists 68. Funding rounds are complete from mid-2025, so counts and the yearly trend undercount a firm that invested before then. The portfolio, themes and places come from its own site and are not affected.
Entry stage
share of companies by the stage of its first roundRebel Fund does not state its stages on its site, so only what it does is shown.
Show as a table
| Value | |
|---|---|
| Pre-seed | 7% |
| Seed | 71% |
| Series A | 21% |
| Series B | 0% |
| Growth | 0% |
Activity by year
rounds it joined, last 10 yearsShow as a table
| Total | Rounds it led | |
|---|---|---|
| '17 | 0 | 0 |
| '18 | 0 | 0 |
| '19 | 0 | 0 |
| '20 | 0 | 0 |
| '21 | 1 | 0 |
| '22 | 0 | 0 |
| '23 | 1 | 0 |
| '24 | 0 | 0 |
| '25 | 1 | 0 |
| '26 | 11 | 0 |
Investor profile
percentile among all firmsShow as a table
| Measure | Percentile of all firms | Value |
|---|---|---|
| Portfolio size | 90th | 67 companies |
| Recent activity | 95th | 11 rounds in 12 months |
| Early stage | 82th | 78% of entries at pre-seed or seed |
| Evidence | 53th | 1% of companies confirmed by a round |
| Sector focus | 58th | 33% in its largest sector |
| Reach | 93th | 9 countries |
Investment themes
share of its checked companiesThis firmAll checked companies
Show as a table
| This firm | All checked companies | |
|---|---|---|
| AI & Machine Learning | 33% | 18% |
| Fintech | 17% | 12% |
| Healthcare & Biotech | 12% | 15% |
| Enterprise Software | 7% | 8% |
| Cybersecurity | 6% | 4% |
| Space & Defense | 6% | 3% |
| E-commerce & Marketplaces | 4% | 6% |
| Industrial & Manufacturing | 2% | 7% |
Invests most often with
firms sharing its portfolio companiesShow as a table
| Share | |
|---|---|
| Y Combinator | 65 |
| Soma Capital | 8 |
| Eight Capital | 7 |
| Multimodal Ventures | 6 |
| Pioneer Fund | 6 |
| TRAC | 6 |
| Transpose Platform | 5 |
| BBQ Capital | 4 |
Its portfolio companies
where they are based, and what their own sites showSite status
- Site answers6799%
- No longer answers00%
- Points to another company11%
- Parked or sold domain00%
A site that stops answering three checks in a row is counted as no longer answering; that is not proof of closure. A site that points to another company is often an acquisition.
Co-investor network
who it backs companies with, and who they back togetherCompare Rebel Fund head to head
portfolio size, rounds, entry stages, themes and the companies both backThree or more firms at once: portfolio overlap.
Recent portfolio activity
when companies last raised with Rebel Fund| Date | Company | Stage |
|---|---|---|
| 6 Nov 2026 | Pre-Seed | |
| 14 Oct 2026 | Seed | |
| 15 Sept 2026 | Seed | |
| 8 Sept 2026 | Seed | |
| 2 Sept 2026 | Seed | |
| 30 Jul 2026 | Series A | |
| 22 Jul 2026 | Seed | |
| 26 May 2026 | Seed |
Round details for Rebel Fund
Amounts, full round histories and every co-investor in Rebel Fund's rounds are on Fundup AI. VCinfo covers investors and their portfolios.
Portfolio
68 companies checked against their own sites| Company | What it does | Themes | First round with it | Evidence |
|---|---|---|---|---|
| AccessOwl automates SaaS access administration work across the employee lifecycle | CybersecuritySpace & Defense | Portfolio page | ||
| Advanced Metal Research manufactures and assembles industrial robots in the USA. | Industrial & Manufacturing | Portfolio page | ||
| Aegis helps hospitals and health systems recover revenue from denied insurance claims using artificial intelligence | Healthcare & Biotech | Portfolio page | ||
| Agency Tool Company provides infrastructure for robotics teams to build, deploy, manage, and operate real-world robots | Robotics & HardwareAI & Machine Learning | Portfolio page | ||
| Agentic Labs simplifies code management and problem-solving for AI teams by collecting, cleaning, and organizing context for agent deployments. | AI & Machine LearningEnterprise Software | Portfolio page | ||
| AgentPhone provides phone numbers for AI agents to handle voice and messages through a unified webhook. | AI & Machine LearningCybersecurity | Portfolio page | ||
| Airbyte moves data from various sources to destinations with its automated data movement platform | Enterprise SoftwareAI & Machine Learning | Portfolio page | ||
| AiSDR develops and provides AI sales software for lead generation and sales outreach | AI & Machine LearningEnterprise Software | Portfolio page | ||
| AIVideo generates videos using artificial intelligence. | Media & EntertainmentAI & Machine Learning | Portfolio page | ||
| Albedo develops and operates satellite systems in very low earth orbit for various applications including imaging, sensing, and communication. | AI & Machine LearningAI & Machine Learning | Portfolio page | ||
| Aleph Solutions provides a digital platform to connect brands, manufacturers, wholesalers, retailers, and service providers in the automotive ecosystem. | E-commerce & MarketplacesIndustrial & Manufacturing | Portfolio page | ||
| Alga Biosciences improves agriculture by using algae to create a feed supplement that reduces methane emissions in cattle. | AI & Machine LearningAI & Machine Learning | Portfolio page | ||
| Algen Biotechnologies discovers medicines through advanced CRISPR gene-modulation and AI | Healthcare & Biotech | Portfolio page | ||
| Almond Robotics builds and sells robots, such as the dual-arm robot Axol, for physical AI applications | Robotics & HardwareAI & Machine Learning | Portfolio page | ||
| Anara develops an AI research assistant that searches scientific papers, extracts insights, and provides citations. | AI & Machine LearningEducation | Portfolio page | ||
| Andromeda Surgical is building an intelligence layer for surgery, starting with endourology, using AI-guided technology and spatial navigation systems. | Healthcare & BiotechAI & Machine Learning | Portfolio page | ||
| Anfin provides a platform for investing in stocks and derivatives in Vietnam. | FintechFintech | Portfolio page | ||
| Ångström AI develops and uses AI physics simulations for pharmaceutical applications | Healthcare & BiotechAI & Machine Learning | Portfolio page | ||
| Apolink provides on-demand access to space for satellite operators to receive timely telemetry and send reliable commands. | Space & DefenseAI & Machine Learning | Portfolio page | ||
| Archon automates compliance with federal software regulations for companies selling software to the government | CybersecurityGaming | Portfolio page |
About this data
site last read 5 Nov 2026- Site
- rebelfund.vc
- Last read
- 5 Nov 2026
- Watching since
- 5 Nov 2026
- Rounds since
- 19 Nov 2021
- Companies checked
- 68
Rates come from what VCinfo has observed since observation_start. Firms tend to remove companies that closed, so early rates understate reality. A company leaving a portfolio page does not mean it closed or exited. An unreachable site means our checks failed, nothing more.
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