Do AlleyCorp and Y Combinator invest together?

Yes — AlleyCorp and Y Combinator appear together in 5 tracked portfolio companies, including AOA Dx, AON3D, KidPass, Players' Lounge, Stepful.

How do AlleyCorp and Y Combinator compare on check size?

AlleyCorp typically writes checks of $1M – $5M, 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.

	AlleyCorp	Y Combinator
Type	Venture studio	Accelerator
HQ	New York	San Francisco
Founded	2007	2005
Check size	$1M – $5M	$500K
Stages	Pre-Seed, Seed, Series A	Pre-Seed, Seed, Series A
Sectors	Advanced Manufacturing, AI & Machine Learning, B2B Marketplaces, Biotech, Consumer, Digital Health, E-commerce, Enterprise Software, Fintech, Hardware, Healthtech, Longevity, Marketplaces, Media & Entertainment, New Materials, Robotics, Space Tech	AI & Machine Learning, Biotech, Climate Tech, Deep Tech, EdTech, Robotics, SaaS, Sector Agnostic, Space Tech
AUM	$850M	—
Tracked investments	148	6,130
Exits (acquired/public)	1	839
Led rounds on record	3	21
Dated deals, last 24 mo	9	1304

Do AlleyCorp and Y Combinator invest together?: Yes — AlleyCorp and Y Combinator appear together in 5 tracked portfolio companies, including AOA Dx, AON3D, KidPass, Players' Lounge, Stepful.
How do AlleyCorp and Y Combinator compare on check size?: AlleyCorp typically writes checks of $1M – $5M, while Y Combinator writes $500K.