United States · Investor

Y Combinator

Last cheque observed Oct 2026; 6410 cheques on record.

Deploying nowAccelerator

Pre-seedSeedSeries AStartups

Deploying now
84%of best year1,051cheques in 12 months, 6,410 on record
Since the last cheque1days00hrs00min00sec
Median round$3.0MCheque size, as they say$500K – $500KRounds led11 of 6,410Sole investor1,835 roundsExits117 from the portfolioMostly inUnited States, 68%
Pitch Y Combinator

Y Combinator highlights

  1. 01

    1,051 cheques in the last 12 months

  2. 02

    Mostly Seed and Pre-seed: 61% of its rounds

  3. 03

    Sole investor in 1,835 rounds, median $500K

  4. 04

    117 exits from the portfolio

What they do

Four times a year we invest in a large number of startups.From their own website
Type
Accelerator (from a list, unverified)
Cheque size
$500K – $500K as they say
Stages
Pre-seedSeedSeries A
Sectors
Startups
Based in
Mountain View, United States
Cold pitches
Accepted

The record

Every round we can evidence, newest first6,410 appearances

  1. 2026

    823 rounds

  2. Oct
    Neuron IndustriesSeed · US · Google News search$10MWith 5 others
  3. Oct
    ReflexSeries A · US · Silicon Angle$14MWith 4 others
  4. Oct
    SavaSeed · US · Pulse 2.0$10MWith 7 others
  5. Oct
    Broccoli AISeries B · US · Wowtale$52MWith 2 others
  6. Oct
    EasolSeries A · GB · Digital Music News$30MWith 6 others
  7. Oct
    InfisicalSeries B · US · Wowtale$40MWith 5 others
  8. Oct
    Vera HealthSeries A · ES · Tech.eu$29MWith 5 others
  9. Oct
    Kivo HealthSeries A · US · Pulse 2.0$10MWith 4 others
  10. Oct
    ManiculeSeed · IN · The SaaS News$1.3MLed
  11. Oct
    VouchPre-seed · IN · The SaaS News$500KSole investor
  12. Oct
    OverwatchSeries A · US · Google News search$15MWith 5 others
  13. Oct
    ParadevSeed · US · Google News search$12MWith 10 others
  14. Oct
    MochatradeSeed · IN · Google News search$5.5MWith 5 others
  15. Oct
    TractianSeries D · BR · Google News search$130MWith 14 others
  16. Oct
    PennantSeed · US · Fintech Global$5.0MWith 6 others
  17. Oct
  18. Oct
    FirstworkSeries A · US · Bharat Fast$15MWith 7 others
  19. Oct
    BlacksmithSeries C · US · Bharat Fast$66MWith 4 others
  20. Oct
    ReadilySeries A · US · MedCity News$11MWith 2 others
  21. Oct
    RebillPre-seed · AR · LatamList$5.4MWith 6 others
  22. Oct
    Databuddy AnalyticsSeed · US · Wamda$500KLed
  23. Oct
    MolagriSeed · CA · AgFunderNews$5.8MWith 5 others
  24. Oct
    CluesoSeries A · US · Inc42$10MWith 5 others
  25. Oct
    HyLightSeries A · FR · Pulse 2.0$15MWith 4 others
  26. Oct
    MeticulousSeries A · US · Pulse 2.0$15MWith 12 others
  27. Oct
    Ultra Robotics Corp.Series A · US · Silicon Angle$50MWith 2 others
  28. Oct
    VitalizeSeries A · US · MedCity News$31MWith 6 others
  29. Oct
    FlaiSeries A · US · LatamList$27MWith 5 others
  30. Oct
    Sensible BiotechnologiesSeries A · SK · The Recursive$47MWith 12 others
  31. Oct
    Nous ResearchSeries B · US · Firms' own news pages$90MWith 6 others
  32. Oct
    Beyond Reach LabsSeed · US · AlleyWatch$10MWith 4 others
  33. Sept
    JeevesSeries C · LatamList$110MWith 13 others
  34. Sept
    Bird.comDebt · NL · Ventureburn$450MWith 9 others
  35. Sept
    NumeralSeries C · US · Ventureburn$100MWith 7 others
  36. Sept
    Hubble NetworkSeries C · US · TechStartups$200MWith 7 others
  37. Sept
    ConfidoSeries B · US · AgFunderNews$55MWith 6 others
  38. Sept
    Angle HealthSeries C · US · Portage$200MWith 5 others
  39. Sept
    SpottSeries A · BE · Ventureburn$21MWith 3 others
  40. Sept
    Angle HealthSeries C · US · Blumberg Capital$600MWith 5 others
  41. Sept
    RaindropSeries A · Lightspeed Venture Partners$15MWith 3 others

An announcement gives the size of the round, not the size of this investor's cheque: the only rounds that imply a cheque are those where they were the sole named investor.

The team

Named by the firm itself, on a filing, its Form ADV or its company registration4 named

CLCarolynn LevyGc; Y Combinator Management, LLCiForm ADV
GTGarry TanCEO/PresidentiForm ADV
JSJessica Shaw LivingstonDirector; Y Combinator Management, LLCiForm ADV
KLKirsty Louise NathooCFO; Y Combinator Management, LLCiForm ADV

We also hold 58 people at this firm from the lists this database was built from: a weaker source than the filings, since a list does not say when a title ended. Login to see them.

What the register says

From the firm's own filings with the SEC, which it must file accurately by law

$22Bgross assets of its fundsOct 2026
1+funds on filenumbered funds in its name
Exemptreporting adviserventure or small private funds
Legal name
Y Combinator Management, LLC
SEC number
CRD 171730

What they claim to have backed

From their own portfolio page (on their website)

0 of 4 we have independently watched raise

PaulgrahamStartup SchoolTectonicdefenseTheinformation

Weaker than a round we watched, stronger than a list somebody sold us. A firm is far less willing to put a company on its own site that it never funded.

Exits from the portfolio

Companies it backed that were later bought or listed117 in all

DataformBought by GoogleUndisclosedDec 2020
SquadBought by TwitterUndisclosedDec 2020
Citus DataBought by MicrosoftUndisclosedJan 2019
VidpressoBought by FacebookUndisclosedAug 2018
SmyteBought by Twitter$65MJun 2018
CoreOSBought by Redhat$250MJan 2018
bop.fmBought by LifeLockUndisclosedOct 2015
FOBOBought by Gone!UndisclosedOct 2015
DataRankBought by Simply MeasuredUndisclosedOct 2015
AlphaDraftBought by FanDuelUndisclosedSept 2015
FutureAdvisorBought by BlackRockUndisclosedAug 2015
Standard TreasuryBought by Silicon Valley BankUndisclosedAug 2015
SHIFTBought by Brand Networks$50MMay 2015
AmiatoBought by AmazonUndisclosedApr 2015
WeilosBought by Weight Watchers InternationalUndisclosedApr 2015
ReadyForZeroBought by AvantUndisclosedMar 2015
AuthyBought by TwilioUndisclosedFeb 2015
Launchpad ToysBought by GoogleUndisclosedFeb 2015
ScreenheroBought by SlackUndisclosedJan 2015

The latest 20 here. An exit counts when it came after the firm's first round in the company. From historical deal records.

Who they invest alongside

The investors most often in the same rounds as Y Combinator. A count of rooms they were both in, not a relationship either has claimed.

Recently backed

The latest companies Y Combinator put money into.

Books by the people here

One book written by people at Y Combinator: Jessica Livingston.

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On podcasts

6 episodes naming Y Combinator in the title, and 4 more that mention it.

Mentioned in

Quick answers about Y Combinator

What does Y Combinator invest in?

Y Combinator invests most often at Seed and Pre-seed (61% of the rounds on record), in sectors such as Startups.

How active is Y Combinator?

6,410 investments on record, 1,051 of them in the last 12 months, and it led 11. The most recent was in Oct 2026.

What has Y Combinator invested in recently?

Its most recent investments on record: Neuron Industries (Seed, Oct 2026), Reflex (Series A, Oct 2026) and Sava (Seed, Oct 2026).

How big are Y Combinator's cheques?

The median round it joins is $3.0M. It says it writes cheques of $500K to $500K.

Does Y Combinator lead rounds?

Sometimes: it led 11 of its 6,410 investments on record (0%).

Where does Y Combinator invest?

Most of the companies it backs are in the United States (68%) and India (8%).

Is Y Combinator investing now?

Yes: it is actively investing, with 1,051 investments in the last 12 months.

Who does Y Combinator invest alongside?

Most often Pioneer Fund (501 rounds together), Liquid 2 Ventures (331 rounds together) and Greycroft (307 rounds together).

Raising now?

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Built from the rounds we watched, its filings and its own website, refreshed every night. How we count · Report a correction · Is this your firm? Claim it