Refolk
Sign in

Companies funded by Y Combinator

The most prolific seed accelerator in the world, batch class twice a year.

Edit the query above, or pick a refinement. 100 free credits on sign-up, no card needed.

Ranked by current headcount across companies in Y Combinator's disclosed portfolio. Refreshed daily.

  1. 1
    DoorDash· San Francisco, California, United States
    • Post-IPO debt
    • 80.7k employees
    • Founded 2013
  2. 2
    Airbnb· San Francisco, California, United States
    • Post-IPO debt
    • 68.6k employees
    • Founded 2007
  3. 3
    Instacart· San Francisco, California, United States
    • Private equity
    • 24.8k employees
    • Founded 2012
  4. 4
    Meesho· Bengaluru, Karnataka, India
    • post ipo secondary
    • 23.9k employees
    • Founded 2015
  5. 5
    Aster DM Healthcare· United Arab Emirates
    • Series B
    • 19.7k employees
    • Founded 2023
Reveal 3,609 more·100 free credits, no card

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 3,614 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.

How this list is built

Refolk pulled companies whose disclosed Crunchbase investor list includes Y Combinator, ranked them by current employee count, and kept those with at least 5 employees. The list refreshes once a day.

Last refreshed: Sun, 21 Jun 2026 07:16:31 GMT

Need a more specific search?

Refolk runs natural-language searches across LinkedIn, GitHub, and the open web. Try one of these:

Browse other investors

See all company lists.

Y Combinator portfolio by location

Y Combinator portfolio by industry