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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
7,960
Total Invested
$25.5B
Average Investment
$9.2M

Y Combinator's Most Recent Investments (2020+)

Company NameFoundedFunding StageAmountCity
Adventris Pharmaceuticals2023Pre-Seed$500KSan Francisco
Semantic Finance2023Pre-Seed$500KSan Francisco
Type2023Pre-Seed$500KNew York
Decoherence2023Pre-Seed$500KSan Francisco
Rosettic2023Pre-Seed$500KSan Francisco
Pando Bioscience2023Pre-Seed$500KWatertown
Planar2023Pre-Seed$500KNew York
Plutis2023Pre-Seed$500KSan Francisco
Coast2023Seed$2.1MEvanston
clearspace2023Pre-Seed$500KSan Francisco

Complete List of Y Combinator Portfolio Companies (7,960)

Export
#CompanyStageAmountLocation
3326Adventris PharmaceuticalsPre-Seed$500KSan Francisco, United States
3327Semantic FinancePre-Seed$500KSan Francisco, United States
3328TypePre-Seed$500KNew York, United States
3329DecoherencePre-Seed$500KSan Francisco, United States
3330RosetticPre-Seed$500KSan Francisco, United States
3331Pando BiosciencePre-Seed$500KWatertown, United States
3332PlanarPre-Seed$500KNew York, United States
3333PlutisPre-Seed$500KSan Francisco, United States
3334CoastSeed$2.1MEvanston, United States
3335clearspacePre-Seed$500KSan Francisco, United States
BiotechnologyLife SciencePharmaceutical

Adventris makes cancer vaccines

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

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)Developer APIsFinTech

Semantic Finance provides a real-time AI-powered news insights API for unpredicted events that affect the financial markets.

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

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)Document ManagementInformation Technology

Type is an AI-powered document editor that helps people to write remarkably fast.

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

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)SoftwareVideo

Decoherence is an AI-based platform to help in video creation from prompts.

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

Founder Contacts

30,000+ verified contacts

Developer APIsInformation TechnologySoftware

Rosettic tracks your cloud usage down to the individual API invocation and database row.

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

Founder Contacts

30,000+ verified contacts

BiotechnologyHealth Care

Pando Bioscience is a drug discovery platform based on synthetic biology.

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

Founder Contacts

30,000+ verified contacts

Developer ToolsInformation TechnologySoftware

Planar is a software that specializes in analyzing code changes and automatically breaks big PRs into smaller sections.

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

Founder Contacts

30,000+ verified contacts

Information TechnologyProductivity ToolsSoftware

Plutis provides semantic search as a service tool.

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

Founder Contacts

30,000+ verified contacts

Developer APIsInformation Technology

Coast is an IT company that offers customization and exclusive links for each prospect.

Evanston, United States
April 2023
$2.1M
Seed

Founder Contacts

30,000+ verified contacts

AppsInformation TechnologyWellness

clearspace is an app that eliminates compulsive phone use by intercepting impulsive app opens and cutting doom scrolling sessions short.

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

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)Generative AIMachine LearningOpen Source

Helicone is an open-source observability platform for generative AI.

San Francisco, United States
April 2023
$1.5M
Pre-Seed

Founder Contacts

30,000+ verified contacts

FinanceFinTechPayments

coil helps businesses to collect bank payments to cut out credit card fees and reduce churn.

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

Founder Contacts

30,000+ verified contacts

Cloud Data ServicesSoftware

Tailorr helps SaaS companies find their self-serve pricing and packaging faster, without the engineering effort.

Haifa, Israel
April 2023
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

Developer ToolsInformation Technology

Teclada is a web-based terminal for remote access

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

Founder Contacts

30,000+ verified contacts

AnalyticsDatabaseInformation Technology

Feather allows you to discover, analyze, and identify investment opportunities.

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

Founder Contacts

30,000+ verified contacts

Developer ToolsInformation TechnologySoftware

Swishjam measures, mitigates, and enhances the performance of websites and applications.

Los Angeles, United States
April 2023
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

BioinformaticsInformation TechnologyLife ScienceSoftware

Drift Bio develops software to help life sciences companies analyze their data.

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

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)Developer ToolsInformation Technology

Baseplate is a backend optimizer platform that creates model management for LLM apps.

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

Founder Contacts

30,000+ verified contacts

Developer Tools

Matano is a modern cloud native SIEM.

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

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)Information TechnologySoftware

SPRX Technologies is an AI-based software that makes corporate R&D tax credits.

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

Founder Contacts

30,000+ verified contacts

Commercial Real EstateSchedulingSoftware

BidSight is a streamlined workflow and stakeholder management software for commercial real estate developers.

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

Founder Contacts

30,000+ verified contacts

Natural Language Processing

Squack streamlines data by enabling accountants to create and fine-tune automation tools.

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

Founder Contacts

30,000+ verified contacts

AppsMobile AppsSoftware

Forfeit is a habit contracts application.

Manchester, United Kingdom
April 2023
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

CryptocurrencyFinTechMobile AppsSmart ContractsWeb3

ZeroDev is a smart wallet as a-service firm that provides in-app smart contract wallets.

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

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)Customer ServiceVirtual Assistant

Parabolic is a developer of AI-based assistant for customer support.

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

Founder Contacts

30,000+ verified contacts

Showing 3326-3350 of 7,960 portfolio companies

Frequently Asked Questions About Y Combinator

How many companies has Y Combinator invested in?

Y Combinator has invested in 7,960 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 Information Technology, Software, Artificial Intelligence (AI), Developer Tools, Developer APIs. The firm invests across 33 different industry categories.

What is Y Combinator's largest investment?

Among tracked funding rounds, Coast received $2.1M in a Seed round. Y Combinator's total known invested capital is $25.5B.

What is the average investment size for Y Combinator?

Y Combinator's average investment size is $9.2M across its portfolio of 7,960 companies.

What are Y Combinator's most recent investments?

Recent Y Combinator portfolio additions include Adventris Pharmaceuticals, Semantic Finance, Type, Decoherence, Rosettic. These companies were founded in 2020 or later.

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