Companies funded by Y Combinator
The most prolific seed accelerator in the world, batch class twice a year.
Ranked by current headcount across companies in Y Combinator's disclosed portfolio. Refreshed daily.
- 1Aster DM Healthcare· United Arab Emirates
- Series B
- 19.4k employees
- Founded 1987
- 2Twitch· San Francisco, California, United States
- Series C
- 17.5k employees
- Founded 2011
- 3Alkem Laboratories Ltd.· Mumbai, Maharashtra, India
- Pre-seed
- 15.8k employees
- Founded 1973
- 4
- Debt
- 14.6k employees
- Founded 2015
- 5Café (YC S21)· New York, New York, United States
- Pre-seed
- 12k employees
- Founded 2020
- 6Deel· San Francisco, California, United States
- Series E
- 9.1k employees
- Founded 2019
- 7Carvana· Tempe, Arizona, United States
- Post-IPO debt
- 7.8k employees
- Founded 2012
- 8Coinbase· First, West Virginia, United States
- Post-IPO debt
- 7.5k employees
- Founded 2012
- 9Freshworks· San Mateo, California, United States
- Secondary
- 7.4k employees
- Founded 2010
- 10Rippling· San Francisco, California, United States
- Series G
- 7.2k employees
- Founded 2016
- 11Scale AI· San Francisco, California, United States
- Corporate
- 6.5k employees
- Founded 2016
- 12Wave Mobile Money· Arrondissement de Mbadakhoune, Kaolack Region, Senegal
- Debt
- 5k employees
- Founded 2017
- 13Monzo Bank· London, England, United Kingdom
- Secondary
- 4.8k employees
- Founded 2015
- 14Reddit, Inc.· San Francisco, California, United States
- Series F
- 4.7k employees
- Founded 2005
- 15Gusto· San Francisco, California, United States
- Series A
- 4.4k employees
- Founded 2011
- 16Cowrywise· Ikeja, Lagos State, Nigeria
- Seed
- 4.3k employees
- Founded 2017
- 17Brock University· St. Catharines, Ontario, Canada
- Series A
- 4.2k employees
- Founded 1962
- 18Kapital Grupo Financiero· Tlalpan, Mexico City, Mexico
- Series C
- 3.5k employees
- Founded 2018
- 19Clipboard· San Francisco, California, United States
- Series C
- 3.4k employees
- Founded 2016
- 20GitLab· San Francisco, California, United States
- Series E
- 3.4k employees
- Founded 2014
- 21Metsä Group· Espoo, Uusimaa, Finland
- Debt
- 3.2k employees
- Founded 1934
- 22Cambly Inc.· San Francisco, California, United States
- Series A
- 3k employees
- Founded 2012
- 23Nourish· New York City Metropolitan Area
- Series B
- 3k employees
- Founded 2021
- 24Groww· Bengaluru, Karnataka, India
- Series F
- 2.9k employees
- Founded 2016
- 25BetterUp· Austin, Texas, United States
- Series unknown
- 2.7k employees
- Founded 2013
Find engineers and founders in Y Combinator’s portfolio
Y Combinator’s portfolio is a curated bet on the next wave of category-defining companies. The list above ranks Y Combinator-backed companies by current headcount, drawn from public LinkedIn and Crunchbase records. With 3,461 matching companies in our index, the depth of senior engineers, founders, and operators is significant.
Y Combinator’s companies tend to share a profile — strong technical founders, fresh capital, and access to the Y Combinator network. Hiring from these companies often means hiring from one of the most curated talent pools in tech.
Refolk turns this list into a search. Ask for “Y Combinatorportfolio companies hiring senior ML engineers” or “founders of Y Combinator-backed companies who left in the last year” and Refolk returns a fresh ranked shortlist.
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