Y Combinator
Venture Capital · Angel Networks & Startup Accelerators

Y Combinator portfolio

Y Combinator (Accelerator) is known to hold 6,324 companies, 3,802 of them startups. 1,402 of them are hiring now, with 24,006 open roles. In the last 12 months rounds in the press named it 22 times (2 as the lead). Its companies closed 255 venture rounds in 12 months, raising $25.6B. Most of them work in Artificial Intelligence, Software, Financial Services.

Source: Alion Accelerator Nov 5, 2026
Investments
6,324
3802 of them startups
Hiring now
1,402
24,006 open roles
Deals in 12 months
22
2 as the lead
Rounds in 12 months
255
$25.6B raised
Exits
885
1050 closed

Companies Y Combinator has invested in

Protocol Labs Web3 & dApps · United States · S14 Venture round $200k · 3 mo ago YC directorySep 25
Blaxel AI Agents · United States · X25 Seed $7.3M · 15 mo ago YC directorySep 25
ZeroEntropy Vector Search & RAG · United Kingdom · W25 Seed $4.2M · 16 mo ago YC directorySep 25
Stack AI AI Agents · United States · W23 Venture round $16M · 18 mo ago 20 roles YC directorySep 25
Zenflow Surgical Instruments & Devices · United States · W15 Venture round $19.4M · 2 yr ago 1 role YC directorySep 25
Persana AI United States · W23 Seed $2.3M · 2 yr ago YC directorySep 25
Instant Databases & DBMS · United States · S22 Seed $3.4M · 2 yr ago YC directorySep 25
Grafana Labs Observability & APM · United States · W21 Venture round $270M · 2 yr ago 130 roles YC directorySep 25
Shaped Recommendation Systems · United States · W22 Series A · 2 yr ago YC directorySep 25
Modal AI Compute & Inference · United States · W22 Series A $25M · 2 yr ago 41 roles YC directorySep 25
OpenPipe United States · S23 Venture round $6.7M · 2 yr ago YC directorySep 25
Continue United States · S23 Venture round $2.1M · 2 yr ago YC directorySep 25
Humanloop AI Evaluation & Observability · United Kingdom · S20 Venture round · 2 yr ago YC directorySep 25
Langfuse AI Evaluation & Observability · United States · W23 Seed $4M · 2 yr ago 6 roles YC directorySep 25
Secoda Data Governance & Catalogs · Canada · S21 Series A $14M · 3 yr ago YC directorySep 25
Whop Marketplaces · United States · S21 Series A $17M · 3 yr ago 39 roles YC directorySep 25
Embrace Observability & APM · United States · S19 Venture round $20M · 3 yr ago YC directorySep 25
Dashworks AI Search · United States · W20 Seed $5M · 3 yr ago YC directorySep 25
Shipamax United Kingdom · W17 Venture round · 3 yr ago YC directorySep 25
Optery Information Security · United States · W22 Seed $2.7M · 3 yr ago YC directorySep 25
Memora Health United States · W18 Venture round $30M · 3 yr ago YC directorySep 25
Coursedog EdTech Platforms · United States · W19 Venture round $90M · 3 yr ago 9 roles YC directorySep 25
OpenLoop Health Telemedicine & Virtual Care · United States · S24 Convertible Note $368k · 3 yr ago 74 roles YC directorySep 25
ChartHop HR & Payroll Software · United States · S20 Venture round $20.1M · 3 yr ago 2 roles YC directorySep 25
Localyze HR & Payroll Software · Germany · S19 Venture round $35M · 4 yr ago YC directorySep 25
Arc Digital Banks & Neobanks · United States · W22 Series A $20M · 4 yr ago YC directorySep 25
SingleStore Databases & DBMS · United States · W11 Venture round $116M · 4 yr ago 34 roles YC directorySep 25
Pina Earth Germany · W22 Seed $2.5M · 4 yr ago YC directorySep 25
Jasper AI LLM & Generative AI · United States · W18 Series A $125M · 4 yr ago 8 roles YC directorySep 25
Vendr S19 Series B $150M · 4 yr ago YC directory, round in the pressMar 8, 2021
BharatX India · W22 Venture round $4.5M · 4 yr ago YC directorySep 25
Doppler DevSecOps · United States · W19 Venture round $20M · 4 yr ago 3 roles YC directorySep 25
Brondell Nonprofits & Foundations · United States · S15 Venture round $28.6M · 4 yr ago YC directorySep 25
Cashflowportal PropTech · United States · W22 Convertible Note $4.7M · 4 yr ago YC directorySep 25
Athelas Revenue Cycle & Medical Billing · United States · S16 Venture round $54.4M · 4 yr ago 69 roles YC directorySep 25
Skio Subscription Commerce · United States · S20 Seed $3.7M · 4 yr ago 1 role YC directorySep 25
GamerPay Digital Goods · Denmark · S21 Venture round $2M · 5 yr ago YC directorySep 25
LaunchDarkly A/B Testing & Experimentation · United States · W23 Venture round $200M · 5 yr ago 43 roles YC directorySep 25
Outible Web Design · W08 Venture round · 5 yr ago YC directorySep 25
DrChrono EHR & Clinical Software · United States · W11 Venture round $12M · 5 yr ago YC directorySep 25
CareRev Healthcare Staffing · United States · S16 Series A $50M · 5 yr ago YC directorySep 25
Bushel Information Security · United States · W12 Venture round $47M · 5 yr ago YC directorySep 25
Routable Payment Processing & Gateways · United States · S17 Venture round $30M · 5 yr ago YC directorySep 25
Bitmovin Photo & Video Editing Software · United States · S15 Venture round $25M · 5 yr ago 12 roles YC directorySep 25
inDinero Accounting & Bookkeeping Services · United States · S10 Convertible Note $2M · 5 yr ago YC directorySep 25
nextmv Logistics · United States · W20 Series A $8M · 5 yr ago YC directorySep 25
Splashtop RMM & MSP Software · Netherlands · S15 Venture round $50M · 5 yr ago YC directorySep 25
Descript Photo & Video Editing Software · United States · S17 Venture round $30M · 5 yr ago 8 roles YC directorySep 25
Nurx Telemedicine & Virtual Care · United States · W16 Venture round $22.5M · 6 yr ago YC directorySep 25
Monad Log Management & Analytics · United States · S21 Venture round $2M · 6 yr ago YC directorySep 25
SimpleCitizen Legal Services · United States · S16 Seed $5.8M · 6 yr ago YC directorySep 25
Science Exchange Human Resources · United States · S11 Venture round $20M · 7 yr ago YC directorySep 25
Unbabel Translation Services · Portugal · W14 Venture round $60M · 7 yr ago YC directorySep 25
Phiar S18 Venture round $3M · 7 yr ago YC directorySep 25
Paystack Payment Processing & Gateways · W16 Venture round $8M · 8 yr ago 15 roles YC directorySep 25
Coinbase Crypto Exchanges · United States · S12 Series E $300M · 8 yr ago 216 roles YC directorySep 25
Airship Marketing Automation · United States · S13 Venture round $24.8M · 8 yr ago 8 roles YC directorySep 25
Flyhomes Real Estate Brokerage · United States · W19 Venture round $17M · 8 yr ago YC directorySep 25
Decent Health Insurance & Benefits · United States · F26 Venture round $5.4M · 8 yr ago YC directorySep 25
Bynext Local Services Marketplaces · United States · W15 Venture round $1.5M · 8 yr ago YC directorySep 25
Gobble Prepared Foods · United States · W14 Series B $15M · 9 yr ago YC directorySep 25
A Thinking Ape Mobile Games · Canada · W08 Venture round $45k · 9 yr ago YC directorySep 25
Lucid United States · W25 Venture round $60M · 9 yr ago YC directorySep 25
WayUp Job Boards & Aggregators · United States · W15 Series B $18.5M · 9 yr ago YC directorySep 25
Flexera IT Service & Asset Management · United States · W20 Venture round $50M · 9 yr ago 24 roles YC directorySep 25
Mednet Health & Medical Media · United States · W17 Venture round $16.5M · 9 yr ago 2 roles YC directorySep 25
Begin Learning Digital Goods · United States · W17 Venture round $3.7M · 10 yr ago YC directorySep 25
WIT United States · W14 Venture round $2.7M · 10 yr ago YC directorySep 25
Mattermark Lead Generation · United States · S12 Venture round $7.3M · 10 yr ago YC directorySep 25
Emburse Procurement & Spend Management · United States · W16 Venture round $10M · 10 yr ago 29 roles YC directorySep 25
SketchDeck Industrial Design · United States · W14 Seed $1.7M · 10 yr ago 3 roles YC directorySep 25
Docker Virtualization & Containers · United States · S10 Venture round $22.1M · 10 yr ago 52 roles YC directorySep 25
Citus Data Databases & DBMS · United States · S11 Series A $9.5M · 11 yr ago YC directorySep 25
BuildZoom Construction · United States · W13 Venture round $10.6M · 11 yr ago YC directorySep 25
Optimizely A/B Testing & Experimentation · United States · W10 Venture round $58M · 11 yr ago 50 roles YC directorySep 25
Airbnb Vacation Rentals · United States · W09 Series D $1.5B · 11 yr ago 160 roles YC directorySep 25
Videopixie Video Production · United States · S11 Seed $1.1M · 11 yr ago YC directorySep 25
Vanhawks W15 Venture round $1.6M · 11 yr ago YC directorySep 25
Boostable W14 Venture round $3.2M · 12 yr ago YC directorySep 25
Standard Treasury S13 Venture round $2.7M · 12 yr ago YC directorySep 25
HigherMe Recruiting Software & ATS · Canada · W15 Venture round $15k · 12 yr ago YC directorySep 25
Kalibrr Job Boards & Aggregators · Philippines · W13 Venture round $1.9M · 12 yr ago 32 roles YC directorySep 25
Priceonomics Content Creation · United States · W12 Seed $1.5M · 14 yr ago YC directorySep 25
Embedly LLC United States · W10 Venture round $450k · 15 yr ago YC directorySep 25
Atlassian Project & Work Management Software · Australia · S13 Series A $60M · 16 yr ago 335 roles YC directorySep 25
Google Search Engines · United States · W21 Series A $25M · 27 yr ago 2522 roles YC directorySep 25
General Motors Automotive Manufacturing · United States · W14 677 roles YC directorySep 25
DoorDash Delivery · United States · S13 377 roles YC directorySep 25
MongoDB Databases & DBMS · United States · S11 342 roles YC directorySep 25
Roblox Corporation Game Development · United States · W22 260 roles YC directorySep 25
Brex Cards & Card Issuing · United States · W21 244 roles YC directorySep 25
Via Public Transport · United States · W15 164 roles YC directorySep 25
Figma Digital Design · United States · W19 136 roles YC directorySep 25
TriNet Human Resources · United States · W13 127 roles YC directorySep 25
Twilio Unified Communications · United States · W12 121 roles YC directorySep 25
Vanta Security Compliance · United States · W18 83 roles YC directorySep 25
Instacart Online Groceries · United States · S12 81 roles YC directorySep 25
Factorial HR & Payroll Software · Spain · W22 80 roles YC directorySep 25
BillionToOne Molecular Diagnostics · United States · S17 76 roles YC directorySep 25
Harness DevOps & Platform Engineering · United States · W17 65 roles YC directorySep 25

Focus

Markets
Artificial Intelligence36%
Software21%
Financial Services12%
Health Care10%
Professional Services6%
Sales & Marketing5%
Cybersecurity4%
Information Technology4%
Where its companies are
United States53%
United Kingdom2%
India2%
Canada2%
France1%
Germany1%
Mexico1%
Singapore1%
Stage of its companies
Pre-seed & seed100%

Questions about Y Combinator

How many companies has Y Combinator invested in?

Y Combinator is known to hold 6,324 companies: 3,802 startups, and 885 exits so far, read from its own portfolio page and the funding rounds that name it.

Is Y Combinator investing now?

Yes: in the last 12 months 22 rounds in the press named Y Combinator (2 as the lead), and 195 companies joined its portfolio page in 90 days.

What does Y Combinator invest in?

The markets of the companies Y Combinator holds: Artificial Intelligence (36%), Software (21%), Financial Services (12%), Health Care (10%), Professional Services (6%).

Which Y Combinator portfolio companies are hiring?

1,402 companies Y Combinator holds are hiring now, with 24,006 open roles listed on this page.

Who does Y Combinator invest alongside?

The investors that hold the most companies together with Y Combinator: Soma Capital, VentureSouq, FundersClub, 500 Global, Multimodal Ventures.

How this page is made

A company counts as a holding when the investor’s own portfolio page links to it, a program’s catalog lists it, or a funding round in the press names the investor. The numbers are rebuilt every night; each company shows where it came from and when it was first seen.

Sources: 54 rounds in the press that name it

Y Combinator portfolio: 6,324 known companies. Alion, Nov 5, 2026. https://alion.io/company/y-combinator/portfolio

Licence: CC BY-SA 4.0JSON