Y Combinator

SEC exempt reporting adviser (venture capital exemption).

Website: HTTP://WWW.YCOMBINATOR.COM
HQ: CA

Y Combinator is a startup accelerator. Its portfolio includes Stripe, Coinbase, Dropbox, Kalshi, AtoB, and Cron, and Cron was acquired by Notion. Garry Tan is President and CEO, Harj Taggar and Diana Hu are Managing Partners, and several General Partners have recently joined the firm.

01 · Says / Does

Tag	Says	Does	Historically (to 2020)
Stages	Not stated	Not enough dated deals	Seed
Sectors	Not stated	Not enough dated deals	Enterprise SaaS, Ecommerce, Fintech, Healthtech
Regions	Not stated	Not enough dated deals	CA

Says: what the firm's funds state. Does: from 0 dated deals in the last 24 months.

Historical focus (through 2020), derived from historical deal data.

Year	Deals	Top sectors
2005	10	Media, Data analytics, Enterprise SaaS
2006	17	Consumer, Media, Data analytics
2007	40	Media, Enterprise SaaS, Fintech
2008	46	Media, Enterprise SaaS, HR and future of work
2009	49	Enterprise SaaS, Media, Consumer
2010	69	Enterprise SaaS, Media, Data analytics
2011	116	Enterprise SaaS, Media, Ecommerce
2012	174	Enterprise SaaS, Media, Ecommerce
2013	128	Enterprise SaaS, Ecommerce, Data analytics
2014	257	Enterprise SaaS, Ecommerce, Media
2015	234	Enterprise SaaS, Ecommerce, Healthtech
2016	288	Enterprise SaaS, AI applications, Healthtech
2017	349	Enterprise SaaS, Fintech, Healthtech
2018	408	Healthtech, AI applications, Enterprise SaaS
2019	553	Fintech, Healthtech, Enterprise SaaS
2020	253	Enterprise SaaS, Fintech, AI applications

Stage mix over time

Pre-seed
Seed
Series A
Series B
Growth

Share of rounds by stage, per year. Striped years have fewer than 3 rounds.Historical focus (through 2020), derived from historical deal data.

Rounds by stage and year
Year	Pre-seed	Seed	Series A	Series B	Growth
2010	1	67	0	0	0
2011	0	107	2	0	0
2012	3	165	1	0	0
2013	1	120	4	1	0
2014	4	229	13	5	2
2015	5	206	7	3	1
2016	9	243	10	8	4
2017	10	287	31	8	7
2018	25	300	34	19	9
2019	18	436	56	20	14
2020	29	181	20	8	3
2021	0	0	0	0	0
2022	0	0	0	0	0
2023	0	0	0	0	0
2024	0	0	0	0	0
2025	0	0	0	0	0
2026	0	0	0	0	0

02 · Fund history

Fund	Year	Size	Status
Y Combinator ES26, LLC Y Combinator funds early-stage startups through an intensive three-month program, investing in founders building companies that aim to take off, with a focus on better products, users, and fundraising options. Inferred from the firm's website	2026	$228.32M (Form D)	Raising
Y Combinator ES24, LLC Y Combinator funds early-stage startups through an intensive three-month program, investing in founders building companies that aim to take off, with a focus on better products, users, and fundraising options. Inferred from the firm's website	2024	$152.7M (Form D)	Open, writing first checks
YC ESP22, L.P. Y Combinator funds early-stage startups through an intensive three-month program, investing in founders building companies that aim to take off, with a focus on better products, users, and fundraising options. Inferred from the firm's website	2022	$765.71M (Form D)	Late investment period
YCCG21, L.P.	2021	$1415.63M (Form D)	Follow-ons only

03 · People across funds

Diana Hu, Managing Partner
Y Combinator ES26, LLC (Team); Y Combinator ES24, LLC (Team); YC ESP22, L.P. (Team); YCCG21, L.P. (Team)
Garry Tan, President & CEO
Y Combinator ES26, LLC (Team); Y Combinator ES24, LLC (Team); YC ESP22, L.P. (Team); YCCG21, L.P. (Team)
Harj Taggar, Managing Partner
Y Combinator ES26, LLC (Team); Y Combinator ES24, LLC (Team); YC ESP22, L.P. (Team); YCCG21, L.P. (Team)
Jared Friedman, Managing Director, Software and General Partner
Y Combinator ES26, LLC (Team); Y Combinator ES24, LLC (Team); YC ESP22, L.P. (Team); YCCG21, L.P. (Team)
Raphael Schaad, General Partner
Y Combinator ES26, LLC (Team); Y Combinator ES24, LLC (Team); YC ESP22, L.P. (Team); YCCG21, L.P. (Team)
Tom Blomfield, General Partner
Y Combinator ES26, LLC (Team); Y Combinator ES24, LLC (Team); YC ESP22, L.P. (Team); YCCG21, L.P. (Team)
Aaron Epstein, General Partner
On the team page, not linked to a fund
Andrew Miklas, General Partner
On the team page, not linked to a fund
Ankit Gupta, General Partner
On the team page, not linked to a fund
Brad Flora, General Partner
On the team page, not linked to a fund
Chris Golda, General Partner
On the team page, not linked to a fund
David Lieb, General Partner
On the team page, not linked to a fund
Grey Baker, General Partner
On the team page, not linked to a fund
Gustaf Alströmer, General Partner
On the team page, not linked to a fund
Harshita Arora, General Partner
On the team page, not linked to a fund
Jon Xu, General Partner
On the team page, not linked to a fund
Nicolas Dessaigne, General Partner
On the team page, not linked to a fund
Pete Koomen, General Partner
On the team page, not linked to a fund
Tyler Bosmeny, General Partner
On the team page, not linked to a fund
Vivian Midha Shen, General Partner
On the team page, not linked to a fund

04 · Recent deals

No dated deals found yet.

05 · Latest from the firm

Team changeChristopher Golda and Grey Baker Join YC as General Partners | Y CombinatorUndated
Team changeDiana Hu Is YC's Newest Managing Partner | Y CombinatorUndated
Team changeHarshita Arora Joins YC as General Partner | Y CombinatorUndated
Team changeVivian Midha Shen and Raphael Schaad Join YC as General Partners | Y CombinatorUndated

06 · Sources

Fund dates and sizes are from SEC Form D filings.

Last verified: Oct 28, 2026