YC
Y Combinator
Accelerator · Founded 2005 · San Francisco, United States
Y Combinator’s biggest current holdings.
Y Combinator is a named shareholder in 40 companies. Dealroom estimates those stakes are worth about $11.1B in total — the disclosed percentage × each company’s latest valuation. The 12 biggest are below, each sized by that estimate.
Kalshi
$1.5B
7% of $22.0B
Whatnot
$1.2B
6% of $20.0B
Deel
$1.0B
6% of $17.3B
Supabase
$735M
7% of $10.5B
Zepto
$665M
9.5% of $7.0B
Replit
$630M
7% of $9.0B
Showing the 12 largest of 40 disclosed direct holdings.
6 companies hidden on this public profile. Estimated value = Y Combinator’s disclosed ownership % × Dealroom’s latest company valuation; direct named stakes only, exited positions excluded. Figures are indicative, not reported marks. Y Combinator also appears inside investor groups in 6Sense, Docker, Flexport, Flock Safety, GrubMarket, Gusto, Human Interest, OpenSea and 4 more, where a standalone stake isn’t disclosed. See the underlying shareholder registers on Dealroom →
Y Combinator’s biggest exits.
Portfolio companies that IPO’d or were acquired at $1B+, with the valuation recorded at exit and — for those still public — their value today. Exit events come from each company’s funding-round history; entry stage from Y Combinator’s transaction record.
Where Y Combinator’s portfolio is concentrated.
Distribution of portfolio companies by headquarters country, sector, entry stage and current growth stage. Across all 7,127 portfolio companies. "Stage entered" is the first priced round the investor joined, derived from the investor’s transaction history.
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USA5,969
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India262
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UK231
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Canada198
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Mexico102
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France86
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Germany83
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Singapore66
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Brazil61
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Nigeria53
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Indonesia41
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Israel37
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Enterprise Software2,056
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Fintech1,099
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Health787
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Marketing525
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Media403
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Education329
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Security267
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Food263
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Transportation262
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Jobs Recruitment230
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Real Estate223
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Robotics202
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Seed7,065
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Series A44
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Series B+15
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Early Growth6,109
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Breakout Stage1,213
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Late Growth334
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Mature10
Inside Y Combinator’s portfolio.
The 60 highest-funded portfolio companies, of 7,127 tracked.
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GoWhere Y Combinator’s portfolio founders come from.
200 founders across the 100 highest-funded portfolio companies — by current location, university attended, and the companies they worked at before founding. Sourced from the founder records the API links to each portfolio company.
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United States145
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India10
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Singapore7
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Netherlands5
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Argentina4
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United Kingdom4
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Israel3
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Sweden3
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Australia2
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Brazil2
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Massachusetts Institute of Technology23
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Stanford University18
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Harvard University10
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University of California, Berkeley9
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Columbia University5
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Stanford University Graduate School of Business4
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University of Michigan4
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University of Southern California4
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Carnegie Mellon University3
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Indian Institute of Technology, Delhi3
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Alphabet | Google10
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McKinsey & Company7
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Meta7
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Massachusetts Institute of Technology6
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Square6
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Deloitte5
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Goldman Sachs5
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MIT Media Lab5
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MIT-IBM Watson AI Lab5
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ClearCarbon4
Similar investors.
Peers the API surfaces as most similar by portfolio shape, with Dealroom investor rank and portfolio scale.
Key people at Y Combinator.
