Skip to main content
Back to Investors

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
TorMagnus Pharmaceuticals2023Pre-Seed$500KSan Francisco
Propify2023Pre-Seed$500KBoston
Diffuse Bio2023Pre-Seed$500KSan Francisco
Struct2023Pre-Seed$500KSan Francisco
Palomma2023Seed$500KMedellín
Fuell2023Pre-SeedUndisclosedMadrid
Blocksfabrik2023Pre-Seed$500KNew York
OpenSight2023Pre-Seed$500KSan Francisco
Ruuf2023Pre-Seed$500KSantiago
Onu2023Pre-Seed$500KNew York

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

Export
#CompanyStageAmountLocation
1151TorMagnus PharmaceuticalsPre-Seed$500KSan Francisco, United States
1152PropifyPre-Seed$500KBoston, United States
1153Diffuse BioPre-Seed$500KSan Francisco, United States
1154StructPre-Seed$500KSan Francisco, United States
1155PalommaSeed$500KMedellín, Colombia
1156FuellPre-SeedUndisclosedMadrid, Spain
1157BlocksfabrikPre-Seed$500KNew York, United States
1158OpenSightPre-Seed$500KSan Francisco, United States
1159RuufPre-Seed$500KSantiago, Chile
1160OnuPre-Seed$500KNew York, United States
Artificial Intelligence (AI)BiotechnologySimulation

TorMagnus Pharmaceuticals is a drug discovery firm dedicated to discovering treatments for Peroxisomal disorders.

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

Founder Contacts

30,000+ verified contacts

SaaSSoftware

Propify is an API to integrate with property management systems.

Boston, United States
April 2023
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)Generative AIHealth CareSoftware

Diffuse Bio develops an automated AI software platform for drug design, leveraging advances in generative AI.

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

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)Generative AISoftware

Struct is a software development company that provides a platform for realtime AI voice agents.

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

Founder Contacts

30,000+ verified contacts

Financial ServicesMobile AppsPayments

Palomma helps merchants in the community save money on card fees by allowing customers to pay directly from their bank.

Medellín, Colombia
April 2023
$500K
Seed

Founder Contacts

30,000+ verified contacts

Credit CardsFinTechSaaSSoftware

Fuell is a premier expense management platform that brings SMEs' financing into the current era.

Madrid, Spain
April 2023
Pre-Seed

Founder Contacts

30,000+ verified contacts

Developer ToolsSoftware

Blocksfabrik develops website-building apps that enable users to customise code patterns without having to write any code.

New York, United States
April 2023
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)Information ServicesInformation Technology

OpenSight provides AI-powered customer support automation services.

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

Founder Contacts

30,000+ verified contacts

EnergyRenewable EnergySolar

Ruuf is a solar marketplace that connects homeowners with solar installers and lenders.

Santiago, Chile
April 2023
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

Developer ToolsInformation TechnologySoftware

Onu is a developer-first tool that allows engineers to turn their scripts or workflows into production-ready internal tools.

New York, United States
April 2023
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

InternetReal EstateRental Property

Playhouse is a proprietary mobile applications that enables users to view and browse real-estate listing.

San Francisco, United States
April 2022
$2.8M
Seed

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)BroadcastingSoftware

Ego Live is an AI-native 3D simulation engine building firm to generate realistic characters in 3D worlds.

San Francisco, United States
April 2024
Seed

Founder Contacts

30,000+ verified contacts

CommunitiesCryptocurrencySocial Network

A crypto-native chat platform. Build a home for your community.

San Francisco, United States
April 2022
$1.5M
Seed

Founder Contacts

30,000+ verified contacts

Cyber SecurityFinTechFraud DetectionIdentity ManagementRisk ManagementSaaS

Truora offers a technology paltform to simplify and automate user interactions across digital channels.

Cali, Colombia
April 2022
$15.0M
Series A

Founder Contacts

30,000+ verified contacts

Financial ServicesFinTechReal EstateSoftware

Nophin is a financial software company for the real estate industry.

New York, United States
April 2022
$2.0M
Seed

Founder Contacts

30,000+ verified contacts

BillingDeveloper APIsInternetPaymentsSoftware

Kable helps developers to integrate usage-based billing, invoicing, analytics, and authentication functions to their API products.

Los Angeles, United States
April 2022
$2.6M
Seed

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)Fraud DetectionIdentity ManagementNetwork Security

Reality Defender is the market leader in deepfake detection. Sign up for free at https://www.realitydefender.com/api

New York, United States
April 2025
$86K
Venture - Series Unknown

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)PropTechReal Estate

HeyPurple is developing an AI leasing assistant for landlords and property management companies.

Palo Alto, United States
April 2024
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)AudioCall CenterGenerative AITelecommunications

Retell AI is the AI voice platform that helps corporate call centers automate calls indistinguishable from human.

San Francisco, United States
April 2024
$4.6M
Seed

Founder Contacts

30,000+ verified contacts

Financial ServicesFinTechPayments

Numo is a financial company that help the contactor, banks and freelancers to get paid in emerging markets.

San Francisco, United States
April 2024
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)Search EngineSoftware

Spark is a software company that builds AI powered search engine and workflow solution for large-scale clean energy developers.

San Francisco, United States
April 2024
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

Information Technology

SciPhi is an open source platform that makes it easy to build, test, deploy and scale your LLM RAG system.

San Francisco, United States
April 2024
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)Communications InfrastructureInformation Technology

Patchwork helps the team by providing better AI powered communication tools and replacing the Slack.

San Francisco, United States
April 2024
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)Generative AISales

Meticulate is an AI-native prospecting engine

San Francisco, United States
April 2024
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)Information TechnologySoftware

Creo is a software that builds internal tools with prompt using artificial intelligence.

San Francisco, United States
April 2024
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

Showing 1151-1175 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 Artificial Intelligence (AI), Software, Information Technology, Generative AI, FinTech. The firm invests across 39 different industry categories.

What is Y Combinator's largest investment?

Among tracked funding rounds, Truora received $15.0M in a Series A 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 TorMagnus Pharmaceuticals, Propify, Diffuse Bio, Struct, Palomma. These companies were founded in 2020 or later.

Explore Other Top Investors

Discover portfolio companies of other leading venture capital firms and investors.

View All Investors