Y Combinator

Iconic seed accelerator + early-stage fund — Airbnb, Stripe, Dropbox, OpenAI

VC Accelerator 📍 Mountain View, CA Founded 2005

AUM

$7.0B

as of 2026-Q1

MID

Y Combinator was founded in 2005 by Paul Graham, Jessica Livingston, Robert Morris, and Trevor Blackwell. The most consequential accelerator in tech — alumni include Airbnb, Stripe, Dropbox, Coinbase, DoorDash, Twitch, and OpenAI. Garry Tan has been President since 2023.

Firm Profile

Firm Type

Subtype

Accelerator

Founded

2005

Mountain View, CA

Country

USA

Notable Partners

Garry Tan (President)Jared FriedmanMichael SeibelDiana Hu

Portfolio Companies (48)

Enriched 2026-09-06 · QuantLogix research

Stripe Cambridge Aerospace Blockchain.com Guild Education Enter Ambience Healthcare Charm Industrial Jetti Resources GUILD Replicate Replit Kalshi Stoke Space Eight Sleep Gecko Robotics Rippling Slash Retell AI Netomi Whatnot Fluidstack Monzo AfterQuery Rappi Gusto Faire Substack Langdock Wordware Stan PostHog Boom Supersonic Supabase Pump Kapital Apollo.io Zapier Outreach Current Stori Found SOURCE Inceptio Technology Unico📈 Success rate: 87% of YC companies still actively operating🎯 Top sectors (2024-25): AI/ML (50%+), B2B SaaS (35%), FinTech (15%)🎓 Batch frequency: 4 batches per year (250-300 companies each)🌍 Primary hub: San Francisco, CA

Investment Focus

Stages

Pre-seed · Seed

Sectors

Enterprise · Consumer · Fintech · Bio · AI

VCAcceleratorIconicSam Altman Era Alumni

Investor data reflects publicly disclosed AUM, fund sizes, and portfolio holdings as of 2026-Q1. Refreshed periodically.