Y Combinator portfolio
Y Combinator (Accelerator) is known to hold 6,201 companies, 3,771 of them startups. 1,342 of them are hiring now, with 24,099 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 $25B. Most of them work in AI Agents, Machine Learning, Custom Software Development.
Companies Y Combinator has invested in
Open roles at Y Combinator portfolio companies
Technical Program ManagerWeekday · this month
Real Estate Sourcing ManagerWeekday · this month
Performance Marketing LeadWeekday · this month
IT AdministratorWeekday · this month
General CounselWeekday · this month
COO / SVP OpsWeekday · this month
Agentic Life Science ExpertWeekday · this month
Senior Optical Sensor Engineer, Sensor Roadmapping/Display Team LiasonGoogle · this month
Senior Field Sales Representative, Public Sector, North, Google Cloud (English, Polish)Google · this month
Senior Software Engineer, Full StackGoogle · this month
Senior Software Developer, Applied AI, Commerce AIGoogle · this month
Senior Machine Learning EngineerAtlassian · this month
Principle Machine Learning EngineerAtlassian · this month
Senor Hydraulic Controls DRE or Technical SpecialistGeneral Motors · this month
Technician - Field ServiceGeneral Motors · this month
Group Manager (Indirect Purchasing)General Motors · this month
Technical Solutions Consultant, Measurement Foundations (Polish, English)Google · this month
Senior Silicon Validation Engineer, Google CloudGoogle · this month
Technical Program Manager, Geo Intel and EscalationsGoogle · this month
Program Manager III, NPI, Cloud Supply ChainGoogle · this month
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Questions about Y Combinator
How many companies has Y Combinator invested in?
Y Combinator is known to hold 6,201 companies: 3,771 startups, and 880 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 69 companies joined its portfolio page in 90 days.
What does Y Combinator invest in?
The markets of the companies Y Combinator holds: AI Agents (8%), Machine Learning (2%), Custom Software Development (2%), LLM & Generative AI (2%), Developer Tools (2%).
Which Y Combinator portfolio companies are hiring?
1,342 companies Y Combinator holds are hiring now, with 24,099 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, Initialized Capital.
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: 53 rounds in the press that name it
Y Combinator portfolio: 6,201 known companies. Alion, Oct 19, 2026. https://alion.io/company/y-combinator/portfolio