Do Matrix and Y Combinator invest together?

Yes — Matrix and Y Combinator appear together in 13 tracked portfolio companies, including Accord, Apollo, Bonsai, Conductor, Courier.

How do Matrix and Y Combinator compare on check size?

Matrix typically writes checks of $100K – $10M, 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.

	Matrix	Y Combinator
Type	Venture capital	Accelerator
HQ	San Francisco	San Francisco
Founded	1977	2005
Check size	$100K – $10M	$500K
Stages	Pre-Seed, Seed, Series A	Pre-Seed, Seed, Series A
Sectors	AI & Machine Learning, Consumer, Data & Infrastructure, Deep Tech, Enterprise Software, Fintech, Healthtech, Sector Agnostic, Semiconductors	AI & Machine Learning, Biotech, Climate Tech, Deep Tech, EdTech, Robotics, SaaS, Sector Agnostic, Space Tech
AUM	$4B	—
Tracked investments	133	6,130
Exits (acquired/public)	7	839
Led rounds on record	2	21
Dated deals, last 24 mo	3	1304

Do Matrix and Y Combinator invest together?: Yes — Matrix and Y Combinator appear together in 13 tracked portfolio companies, including Accord, Apollo, Bonsai, Conductor, Courier.
How do Matrix and Y Combinator compare on check size?: Matrix typically writes checks of $100K – $10M, while Y Combinator writes $500K.