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
6,839
Total Invested
$43.6B
Average Investment
$11.4M

Y Combinator's Most Recent Investments (2020+)

Company NameFoundedFunding StageAmountCity
Blue2025Pre-SeedUndisclosedSanta Clara
Sira2025Pre-SeedUndisclosedSan Francisco
Ghostship2025Pre-SeedUndisclosedSan Francisco
Halluminates2025Pre-SeedUndisclosedSan Francisco
Stormy2025Pre-SeedUndisclosedSan Francisco
ContextFort2025Pre-SeedUndisclosedSan Francisco
Procurated2023Convertible NoteUndisclosedWashington
Treasury Prime2022Series CUndisclosedSan Francisco
EasyPost2021Series BUndisclosedLehi
Chatwoot2021SeedUndisclosedDover

Complete List of Y Combinator Portfolio Companies (6,839)

Export
#CompanyStageAmountLocation
1BluePre-SeedUndisclosedSanta Clara, United States
2SiraPre-SeedUndisclosedSan Francisco, United States
3GhostshipPre-SeedUndisclosedSan Francisco, United States
4HalluminatesPre-SeedUndisclosedSan Francisco, United States
5StormyPre-SeedUndisclosedSan Francisco, United States
6ContextFortPre-SeedUndisclosedSan Francisco, United States
7ProcuratedConvertible NoteUndisclosedWashington, United States
8Treasury PrimeSeries CUndisclosedSan Francisco, United States
9EasyPostSeries BUndisclosedLehi, United States
10ChatwootSeedUndisclosedDover, United States
AppsArtificial Intelligence (AI)Software

Blue is a voice assistant designed to control any app on the smartphone with natural speech.

Santa Clara, United States
September 2025
Pre-Seed

Founder Contacts

19,000+ verified contacts

Artificial Intelligence (AI)Human ResourcesInformation TechnologySoftware

Sira provides an AI HR Manager software that automates time tracking, payroll, HR management, and employee scheduling.

San Francisco, United States
September 2025
Pre-Seed

Founder Contacts

19,000+ verified contacts

Developer ToolsDevOpsSaaS

AI Agents to Find Bugs in Your Product

San Francisco, United States
September 2025
Pre-Seed

Founder Contacts

19,000+ verified contacts

Artificial Intelligence (AI)Information TechnologySoftware

Halluminate provides realistic sandboxes and datasets to help model labs and enterprises train frontier computer and browser use agents.

San Francisco, United States
September 2025
Pre-Seed

Founder Contacts

19,000+ verified contacts

Artificial Intelligence (AI)B2BMarketingPredictive AnalyticsSaaSVirtual Assistant

Stormy is an AI tool that boosts productivity by automating tasks and learning from your screen activity.

San Francisco, United States
September 2025
Pre-Seed

Founder Contacts

19,000+ verified contacts

Artificial Intelligence (AI)CADSoftware

ContextFort is an AI platform that automates drawing reviews for construction contractors.

San Francisco, United States
September 2025
Pre-Seed

Founder Contacts

19,000+ verified contacts

Procurement

Procurated is the largest supplier ratings and reviews platform built for the public sector.

Washington, United States
September 2023
Convertible Note

Founder Contacts

19,000+ verified contacts

BankingDeveloper APIsFinancial ServicesFinTechPayments

Treasury Prime is a Banking-as-a-Service company that connects banks and FinTechs through an API.

San Francisco, United States
September 2022
Series C

Founder Contacts

19,000+ verified contacts

DeliveryE-CommerceLogisticsShipping

EasyPost provides a simple postage API that allows developers to quickly and painlessly integrate shipping into any e-commerce application.

Lehi, United States
September 2021
Series B

Founder Contacts

19,000+ verified contacts

CRMCustomer ServiceMarketingOpen SourceSaaSSoftware

An open-source omnichannel customer engagement suite

Dover, United States
September 2021
Seed

Founder Contacts

19,000+ verified contacts

CryptocurrencyMobile AppsStock ExchangesTrading Platform

Weltio is a trading platform that lets users open an account in US dollars and lets them invest in stock exchanges and cryptocurrencies.

Miami, United States
September 2022
Pre-Seed

Founder Contacts

19,000+ verified contacts

CryptocurrencyFinancial ServicesPayments

Lyra is a virtual card provider that allows customers to create and fund cards using cryptocurrency.

Houston, United States
September 2022
Pre-Seed

Founder Contacts

19,000+ verified contacts

CryptocurrencyDeveloper ToolsGamingWeb3

Metafi builds Blockchain infrastructure for Web3 games with embedded wallets, cross-chain transactions, and on-chain event monitoring.

Singapore, Singapore
September 2022
Pre-Seed

Founder Contacts

19,000+ verified contacts

Artificial Intelligence (AI)Financial ServicesService Industry

Argovox is an artificial intelligence platform that manages phone conversations within the financial services industry.

San Francisco, United States
September 2022
Pre-Seed

Founder Contacts

19,000+ verified contacts

Artificial Intelligence (AI)Call CenterInformation Services

Delfino AI is an AI-powered platform intended to automate benefit verification phone calls to payors.

San Francisco, United States
September 2022
Pre-Seed

Founder Contacts

19,000+ verified contacts

Fantasy SportsGambling

AI-POWERED SPORTS GAMING TECHNOLOGY

Santa Monica, United States
September 2022
Series A

Founder Contacts

19,000+ verified contacts

Artificial Intelligence (AI)B2BSaaS

Sigma AI streamlines e-commerce brand customer support with automation, accelerating responses, tagging, and ticket closure.

San Francisco, United States
September 2022
Pre-Seed

Founder Contacts

19,000+ verified contacts

AppsEmployee BenefitsSoftware

CompUp offers a full-stack compensation management platform to streamline compensation processes and ensure fair pay.

San Francisco, United States
September 2022
Pre-Seed

Founder Contacts

19,000+ verified contacts

Artificial Intelligence (AI)InternetLogisticsMachine LearningRestaurants

AI-Driven Tech & Space Optimization to Scale Restaurants

San Francisco, United States
September 2021
Seed

Founder Contacts

19,000+ verified contacts

Data IntegrationInformation TechnologyInternet

Bronco AI is an intelligent integration layer across your legacy IT so you can get things done

San Francisco, United States
September 2023
Pre-Seed

Founder Contacts

19,000+ verified contacts

Cloud ManagementInformation TechnologySoftware

Telophase is a software firm that offers a centralized interface and tools to streamline the deployment, and monitoring of resources.

New York, United States
September 2023
Pre-Seed

Founder Contacts

19,000+ verified contacts

AppsInformation TechnologySoftware

Wattson Health provides a platform for pharmacies to automate tasks, improving RX management and workflow efficiency.

San Francisco, United States
September 2023
Pre-Seed

Founder Contacts

19,000+ verified contacts

Artificial Intelligence (AI)Machine LearningSoftware

Watto AI uses AI bots to provide natural interactions in collecting leads and automate customer support.

Seattle, United States
September 2023
Pre-Seed

Founder Contacts

19,000+ verified contacts

Electrical DistributionEnergyRenewable EnergyWind Energy

Kitekraft is involved in the design and development of flying wind turbines that generate electrical energy and electricity at a low cost.

Munich, Germany
September 2025
Grant

Founder Contacts

19,000+ verified contacts

FinanceFinancial ServicesFinTechLegalNon Profit

Upsolve helps low-income individuals to file for bankruptcy for free.

Brooklyn, United States
September 2024
Grant

Founder Contacts

19,000+ verified contacts

Showing 1-25 of 6,839 portfolio companies

Frequently Asked Questions About Y Combinator

How many companies has Y Combinator invested in?

Y Combinator has invested in 6,839 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, SaaS, Financial Services. The firm invests across 50 different industry categories.

What is the average investment size for Y Combinator?

Y Combinator's average investment size is $11.4M across its portfolio of 6,839 companies.

What are Y Combinator's most recent investments?

Recent Y Combinator portfolio additions include Blue, Sira, Ghostship, Halluminates, Stormy. 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