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Y Combinator portfolio in New York

The most prolific seed accelerator in the world, batch class twice a year. Filtered to companies headquartered in New York.

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Built from a search like: “Y Combinator-backed companies in New York”

Ranked by current headcount across Y Combinator-backed companies in New York. Refreshed daily.

  1. 1
    Café (YC S21)· New York, New York, United States
    • Pre-seed
    • 13.2k employees
    • Founded 2020
  2. 2
    Nourish· New York City Metropolitan Area
    • Series C
    • 3.4k employees
    • Founded 2021
  3. 3
    Optimizely· New York, New York, United States
    • Debt
    • 1.7k employees
    • Founded 2010
  4. 4
    ACLU· New York, New York, United States
    • non equity assistance
    • 1.3k employees
    • Founded 1920
  5. 5
    Seeking Alpha· New York, New York, United States
    • Seed
    • 952 employees
    • Founded 2005
Reveal 351 more·100 free credits, no card

Y Combinator portfolio companies in New York

Y Combinator’s New York portfolio is one of the most active recruiting pools in the market. The list above ranks Y Combinator-backed companies headquartered in New York by current headcount, drawn from public LinkedIn and Crunchbase records. With 356 matching companies in our index, you can see exactly where the Y Combinator thesis has landed locally.

Y Combinator companies in New Yorktend to attract a specific type of operator - a founder or early hire bought into both the firm’s thesis and the city’s ecosystem. That makes the engineers and designers at these companies particularly valuable signals.

Refolk lets you reach this pool. Ask for “Y Combinator companies in New Yorkhiring founding engineers” or “founders of Y Combinator-backed companies in New York who left in the last year” and Refolk returns a ranked shortlist with evidence behind each match.

How this list is built

Refolk pulled companies whose disclosed Crunchbase investor list includes Y Combinator and whose HQ is in New York, 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 08:23:45 GMT

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