Y Combinator portfolio
Y Combinator (Accelerator) is known to hold 6,172 companies, 3,393 of them startups. 1,277 of them are hiring now, with 22,208 open roles. In the last 12 months rounds in the press named it 25 times (3 as the lead). Its companies closed 237 venture rounds in 12 months, raising $11.3B. Most of them work in AI Agents, LLM & Generative AI, Developer Tools.
Companies Y Combinator has invested in
Open roles at Y Combinator portfolio companies
Senior Backend Engineer (Remote)Freterium · this month
Voice AI QA AnalystVeritus · this month
Data Analyst / Data ScientistWeekday · this month
USG Capture Operations AnalystAstranis · this month
USG Capture ManagerAstranis · this month
Director, USG Capture ManagementAstranis · this month
National Security Programs Development ManagerAstranis · this month
Director, Civil Space SalesAstranis · this month
Inside Sales Representative- ArgentinaAgendaPro · this month
Regional Alliance Manager (EMEA)Optro · this month
Regional Alliance Manager (Japan)Optro · this month
Principal Analyst, Sales Strategy & Operations - EMEA SalesAtlassian · this month
Junior Product ManagerYassir · this month
Technical Social Media StrategistAtlassian · this month
Strategic Solution Sales ManagerAtlassian · this month
Strategic Account Executive - WestAtlassian · this month
Sr. Principal Technical Program Manager - Sales & Finance ProductsAtlassian · this month
Sr Principal Technical Program Manager - Enterprise and EmergingAtlassian · this month
Solutions Architect | DXAtlassian · this month
Solution Sales Executive, Prod CoAtlassian · this month
Focus
Co-investors
Similar investors
their companies share markets and countries
Questions about Y Combinator
How many companies has Y Combinator invested in?
Y Combinator is known to hold 6,172 companies: 3,393 startups, and 855 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 25 rounds in the press named Y Combinator (3 as the lead), and 35 companies joined its portfolio page in 90 days.
What does Y Combinator invest in?
The markets of the companies Y Combinator holds: AI Agents (7%), LLM & Generative AI (2%), Developer Tools (1%), AI Development Tools (1%), Financial AI (1%).
Which Y Combinator portfolio companies are hiring?
1,277 companies Y Combinator holds are hiring now, with 22,208 open roles listed on this page.
Who does Y Combinator invest alongside?
The investors that hold the most companies together with Y Combinator: FundersClub, Andreessen Horowitz, Initialized Capital, Wayfinder Ventures, Metaplanet.
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: 48 rounds in the press that name it
Y Combinator portfolio: 6,172 known companies. Alion, Oct 4, 2026. https://alion.io/company/y-combinator/portfolio