Do Sequoia Capital and Y Combinator invest together?

Yes — Sequoia Capital and Y Combinator appear together in 34 tracked portfolio companies, including Airbnb, Amplitude, ARQ, Aspora, Auctor.

How do Sequoia Capital and Y Combinator compare on check size?

Sequoia Capital typically writes checks of $4.4M – $214M, while Y Combinator writes $500K.

Two firms that co-invest: side by side on stage, sector, check size, and track record, from public filings and the firms' own sites.

	Sequoia Capital	Y Combinator
Type	Venture capital	Accelerator
HQ	Menlo Park	San Francisco
Founded	1972	2005
Check size	$4.4M – $214M	$500K
Stages	Pre-Seed, Seed, Series A, Series B, Series C, Growth, Late Stage	Pre-Seed, Seed, Series A
Sectors	AI & Machine Learning, Biotech, Consumer, Crypto & Web3, Cybersecurity, Data & Infrastructure, Developer Tools, Digital Health, Enterprise Software, Fintech, Healthtech, Robotics, SaaS, Sector Agnostic	AI & Machine Learning, Biotech, Climate Tech, Deep Tech, EdTech, Robotics, SaaS, Sector Agnostic, Space Tech
AUM	$82.2B	—
Tracked investments	293	6,130
Exits (acquired/public)	21	839
Led rounds on record	35	21
Dated deals, last 24 mo	18	1304

Do Sequoia Capital and Y Combinator invest together?: Yes — Sequoia Capital and Y Combinator appear together in 34 tracked portfolio companies, including Airbnb, Amplitude, ARQ, Aspora, Auctor.
How do Sequoia Capital and Y Combinator compare on check size?: Sequoia Capital typically writes checks of $4.4M – $214M, while Y Combinator writes $500K.