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Y Combinator Portfolio Companies

Investor actively backing innovative startups and growth-stage companies across various industries and funding rounds.

Last updated: July 2026

Y Combinator Investment Overview

Portfolio Companies
7,916
Total Invested
$61.9B
Average Investment
$11.1M

Y Combinator's Most Recent Investments (2020+)

Company NameFoundedFunding StageAmountCity
Dumme2023Seed$3.4MLondon
6sense2023Debt Financing$100.0MSan Francisco
DioxusLabs2023Pre-Seed$500KSan Francisco
Rubber Ducky Labs2023Seed$1.5MSan Francisco
Posh2022Seed$3.8MHayward
Zenysis2022Series B$13.3MSan Francisco
Courier2022Series B$35.0MSan Francisco
Vibe Bio2022Venture - Series Unknown$12.0MBoston
Welcome2022Series AUndisclosedDenver
Yummy2022Series A$47.0MSan Francisco

Complete List of Y Combinator Portfolio Companies (7,916)

Export
#CompanyStageAmountLocation
676DummeSeed$3.4MLondon, United Kingdom
6776senseDebt Financing$100.0MSan Francisco, United States
678DioxusLabsPre-Seed$500KSan Francisco, United States
679Rubber Ducky LabsSeed$1.5MSan Francisco, United States
680PoshSeed$3.8MHayward, United States
681ZenysisSeries B$13.3MSan Francisco, United States
682CourierSeries B$35.0MSan Francisco, United States
683Vibe BioVenture - Series Unknown$12.0MBoston, United States
684WelcomeSeries AUndisclosedDenver, United States
685YummySeries A$47.0MSan Francisco, United States
B2CInformation Services

Dumme is the creator of a content automation platform designed to search for information using video.

London, United Kingdom
June 2023
$3.4M
Seed

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)B2BBig DataBusiness Information SystemsEmail MarketingMachine LearningMarketing AutomationSalesSales Automation

6sense is an account-based marketing platform that helps B2B organizations achieve predictable revenue growth.

San Francisco, United States
June 2023
$100.0M
Debt Financing

Founder Contacts

30,000+ verified contacts

Open SourceSoftwareWeb Development

DioxusLabs An open source project focused to improving Rust UI.

San Francisco, United States
June 2023
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)E-CommerceInformation TechnologySEO

Rubber Ducky Labs is a technology company focused on AI-powered product discovery for e-commerce.

San Francisco, United States
June 2023
$1.5M
Seed

Founder Contacts

30,000+ verified contacts

Electric VehicleIndustrial AutomationRenewable EnergyRoboticsSustainability

Building the AI and automation platform to bring energy costs zero and get us to net zero

Hayward, United States
June 2022
$3.8M
Seed

Founder Contacts

30,000+ verified contacts

AnalyticsData IntegrationDeveloper PlatformMachine LearningSoftware

Zenysis build the software that governments & international organizations need to confront some of the biggest challenges facing humanity.

San Francisco, United States
June 2022
$13.3M
Series B

Founder Contacts

30,000+ verified contacts

Developer APIsInternetMessagingSoftware

Courier is a notification-creation program for app developers that offers push notifications, emails, chat, slack, and custom channels.

San Francisco, United States
June 2022
$35.0M
Series B

Founder Contacts

30,000+ verified contacts

AnalyticsArtificial Intelligence (AI)BiopharmaBiotechnologyLife Science

Vibe Bio is an AI-based life sciences company that helps biopharma companies with analysis and strategic drug pipeline decisions.

Boston, United States
June 2022
$12.0M
Venture - Series Unknown

Founder Contacts

30,000+ verified contacts

EventsInformation TechnologyInternetSoftware

Welcome creates jaw-dropping virtual events.

Denver, United States
June 2022
Series A

Founder Contacts

30,000+ verified contacts

AppsConsumerE-CommerceFood DeliveryInternetLogisticsOnline Portals

Yummy is a last-mile and ridesharing app in LATAM

San Francisco, United States
June 2022
$47.0M
Series A

Founder Contacts

30,000+ verified contacts

Health Care

Endpoint Health is a precision immunology company

Palo Alto, United States
June 2022
$52.0M
Series A

Founder Contacts

30,000+ verified contacts

BiotechnologyGeneticsHealth DiagnosticsMedical

BillionToOne is a precision diagnostics company that focuses on genetic testing for disease detection.

Menlo Park, United States
June 2024
$130.0M
Series D

Founder Contacts

30,000+ verified contacts

Cyber Security

Palitronica provides cyber-protection for critical infrastructure and associated supply chains.

Kitchener, Canada
June 2023
$50K
Grant

Founder Contacts

30,000+ verified contacts

BatteryConsumer ElectronicsElectronicsManufacturing

SoundBoks is a Copenhagen-based hardware company developing and selling battery-powered speaker.

Copenhagen, Denmark
June 2023
$8.6M
Venture - Series Unknown

Founder Contacts

30,000+ verified contacts

Content CreatorsDigital EntertainmentMedia and EntertainmentNews

The Ankler offers an entertainment industry newsletter, featuring commentary and gossip.

Los Angeles, United States
June 2022
$1.5M
Seed

Founder Contacts

30,000+ verified contacts

E-Commerce

Riogrande is an e‑commerce aggregator that acquires, operates, and scales consumer brands.

Mexico City, Mexico
June 2022
Series A

Founder Contacts

30,000+ verified contacts

Software

Metal is a data-driven platform that help founders identify, research, and connect with investors and manage fundraising workflows.

Dover, United States
June 2026
Seed

Founder Contacts

30,000+ verified contacts

BeautyConsumerHealth CareHome ServicesLocation Based ServicesWellness

Online marketplace where people can book good quality beauty & wellness services conveniently delivered at home in Latin America.

Mexico City, Mexico
June 2023
$2.8M
Venture - Series Unknown

Founder Contacts

30,000+ verified contacts

ComputerSoftwareTransportation

Rose Rocket provides a transportation management platform.

Toronto, Canada
June 2023
$38.0M
Series B

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)Computer VisionPersonal HealthReal TimeSoftware

MDalgorithms uses smart algorithms and computer vision to provide real time mobile tools for people with health disorders.

San Francisco, United States
June 2022
$6.0M
Venture - Series Unknown

Founder Contacts

30,000+ verified contacts

B2BInformation TechnologyManufacturingProductivity ToolsSchedulingSoftwareSpace Travel

Epsilon3 is the OS for spacecraft and complex operations.

Los Angeles, United States
June 2022
$15.0M
Series A

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)Data Collection and LabelingInformation TechnologyMachine Learning

HUD is the platform for building RL environments and post training datasets.

San Francisco, United States
June 2026
$500K
Series A

Founder Contacts

30,000+ verified contacts

ConsumerInformation TechnologySocial Media Marketing

InstaAgent helps brands scale campaigns across hundreds of targeted audiences with personalized content on Meta and TikTok.

San Francisco, United States
June 2026
Pre-Seed

Founder Contacts

30,000+ verified contacts

Cloud SecurityCyber SecurityPenetration Testing

Tolmo is an AI security platform that secures every layer of cloud applications, from code to cloud

San Francisco, United States
June 2026
Seed

Founder Contacts

30,000+ verified contacts

Enterprise SoftwareSales Enablement

Context layer for fast-growing sales teams

San Francisco, United States
June 2026
Pre-Seed

Founder Contacts

30,000+ verified contacts

Showing 676-700 of 7,916 portfolio companies

Frequently Asked Questions About Y Combinator

How many companies has Y Combinator invested in?

Y Combinator has invested in 7,916 companies tracked in our database. The portfolio spans multiple industries and funding stages, from seed-stage startups to late-stage companies.

What industries does Y Combinator invest in?

Y Combinator's top investment sectors include Software, Artificial Intelligence (AI), Information Technology, Machine Learning, E-Commerce. The firm invests across 68 different industry categories.

What is Y Combinator's largest investment?

Among tracked funding rounds, BillionToOne received $130.0M in a Series D round. Y Combinator's total known invested capital is $61.9B.

What is the average investment size for Y Combinator?

Y Combinator's average investment size is $11.1M across its portfolio of 7,916 companies.

What are Y Combinator's most recent investments?

Recent Y Combinator portfolio additions include Dumme, 6sense, DioxusLabs, Rubber Ducky Labs, Posh. These companies were founded in 2020 or later.

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