Solutions Ecosystems Reports Resources Data Pricing Login Book a demo
Investor profile

Y Combinator

Accelerator · Mountain View, USA · Founded 2005 · Active in 2026

← Power Law Ranking

A public taster of the full Dealroom platform — request a demo to explore live deal flow, full investor history, and team intel. · Last updated 15 Apr 2026 · Methodology

142 Power Law outcomes Power Law Ranking #1 · 142 Power Law outcomes · Active 2026
Enterprise value → 5y
$868B
Unicorns ↑ 40% 5y
136
Decacorns ↑ 54% 5y
20
Thoroughbreds ↑ 44% 5y
144
Featured in #1Power Law Investor Ranking · Global · 2026 Top 0.1%by Seed → $100M+ revenue outcomes

Y Combinator is the original startup accelerator, founded in Mountain View in 2005 by Paul Graham, Jessica Livingston, Robert Morris, and Trevor Blackwell. YC invented the batch model — a uniform pre-seed cheque, a twelve-week program, and Demo Day — and runs two cohorts a year. Alumni include Airbnb, Stripe, DoorDash, Coinbase, Reddit, and Dropbox.

The Bookface alumni forum and the YC network are widely cited as the firm's defining edge. The portfolio numbers on this profile cover only outcomes Dealroom measures for the Power Law ranking ($25M+ revenue, $100M+ revenue, or unicorn status) — Dealroom's broader dataset tracks the full Y Combinator alumni base, which is several times larger.

Portfolio analysis

The 142 Y Combinator Power Law outcomes ($100M+ revenue and above).

Snapshot of where the outcomes are concentrated by country, sector, and stage entered.

By countryCount
  1. USA125
  2. India4
  3. UK2
  4. Mexico2
  5. Indonesia2
  6. Senegal1
  7. Colombia1
  8. Australia1
  9. Decentralised1
  10. Sweden1
  11. Singapore1
  12. Estonia1
By sectorCount
  1. Fintech32
  2. Other B2B Software23
  3. Marketing15
  4. eCommerce & Marketplaces11
  5. AI11
  6. Cybersecurity8
  7. Edtech8
  8. Transportation7
  9. Health Tech & Medtech7
  10. Biotech & Life Sciences6
  11. Other6
  12. Space4
By stage enteredCount
  1. Series B+12
  2. Series A1
  3. Seed128
01 · Portfolio market map

Y Combinator's 142 Power Law outcomes.

Toggle between a sector landscape and a world map. Both views respond to the stage and outcome-tier filters. The faded names at the bottom of bigger boxes are part of the full list — click "+ N more" to reveal them.

Stage entered
Outcome tier
Region
Group by
142 of 142 Power Law outcomes
Logos hosted by Dealroom; click any chip to open the company in app.dealroom.co. The dot inside each chip shows the company's highest tier — red Gigacorn, violet Centicorn/Decacorn, lavender Unicorn, blue Thoroughbred, green Colt. Tiers are inclusive: a Unicorn (e.g. Klarna) also matches the Thoroughbred filter, a Decacorn also matches Unicorn and Thoroughbred, and so on up the ladder. Colt is a separate axis (high-growth, smaller revenue) and only matches itself. Map dots use the same colour code; hover for details. Sectors are mutually exclusive (priority-ordered classification). Stage entered = the round Y Combinator first invested in (where data is available — coverage 93%).
02 · Origin of portfolio founders

Where Y Combinator's founders come from — and where they study.

301 founders across the 142 Power Law outcomes — split by country of origin, university attended, and the company they worked at before founding. Massachusetts Institute of Technology and Alphabet | Google are the deepest single pipelines.

LocationCount
United States165
India23
United Kingdom16
Canada13
Colombia11
Nigeria6
China6
Mexico5
Brazil5
Jordan4
+12 more →
UniversityCount
Massachusetts Institute of Technology25
Stanford University23
University of Waterloo15
University of Oxford8
Harvard University8
Berkeley6
Stanford University Graduate School of Business5
University of Southern California5
University of Cambridge4
Purdue University4
+108 more →
Origin companyCount
Alphabet | Google31
Microsoft26
Meta23
Amazon11
Dropbox7
SpaceX | xAI6
Brightcove6
Palantir5
Apple5
PayPal4
+167 more →
Origin = country a founder is born in or grew up in (founders may have multiple origins; counts include all entries). University = highest-listed degree. Origin company = a previous employer where the founder was tagged before starting their current company. Explore the full Sequoia infographic on Thoroughbreds & Unicorns →
03 · Key people

Key people at Y Combinator.

Senior investment team at Y Combinator has not been published on this profile yet.
Suggest the partner roster →
No partner roster has been published on this profile yet.
04 · Compare with peers

How does Y Combinator stack up?

Y Combinator in orange, your selection in blue and other colours. Pick from the global roster of 35 peer investors — filter by region or hit "Find similar shapes" to auto-pick the three closest. The funnel matrix mirrors the spider chart on the ranking page; the line chart shows each firm's share of global unicorns minted that year — peaks reveal vintage years.

Compare against

Stage focus

Companies by entry stage and outcome tier

Sector focus

Companies per investor across the 10 highest-volume sectors

Share of new unicorns per year

% of all global unicorns minted that year, year by year
Source: Dealroom Power Law dataset. Investors shown are the 2026 Power Law top 35 by combined entry-to-outcome score, drawn from the overview and locations_data sheets. Funnel-matrix axes rescale per-axis using the maximum among the currently selected investors, so the polygons always fill the chart for shape comparison.

Want the full picture on Y Combinator?

The Dealroom platform tracks every round, every co-investor, and every portfolio company in real time — across 25,000+ investors and 3M+ companies globally.

View Y Combinator in app → Book a demo
Data as of 15 Apr 2026 · Source: Dealroom Power Law dataset · Methodology
Suggest an edit