Investor

Jane Street

Last cheque observed Oct 2026; 17 cheques on record.

Email

Deploying nowGrowth equity

GrowthSeries CSeries D

Deploying now
100%of best year12cheques in 12 months, 17 on record
Since the last cheque22days00hrs00min00sec
Median round$1.0BRounds led5 of 17Sole investor1 roundsMostly inUnited States, 76%
Pitch Jane Street

Jane Street highlights

  1. 01

    12 cheques in the last 12 months

  2. 02

    Mostly Growth and Series C: 54% of its rounds

  3. 03

    Sole investor in 1 rounds, median $1.0B

What they do

Type
Growth equity (from a list, unverified)
Cheque size
Not stated
Cold pitches
Not stated

The record

Every round we can evidence, newest first17 appearances

  1. 2026

    9 rounds

  2. Oct
    OxideSeries D · US · Pulse 2.0$445MWith 9 others
  3. Aug
    EtchedUS · TechCrunch$700MLed
  4. Aug
    Firmus TechnologiesGrowth · AU · TechStartups$2.0BWith 5 others
  5. Jun
    EtchedSeries C · US · TechCrunch$300MWith 18 others
  6. May
    AnthropicSeries H · US · Crunchbase News$50BWith 32 others
  7. Apr
    FluidstackUS · TechCrunch$1.0BLed
  8. Mar
    NscaleSeries C · GB · 8090 Industries$2.0BWith 14 others
  9. Feb
    MatXSeries B · US · TechCrunch$500MLed
  10. Feb
    AnthropicGrowth · US · Crunchbase News$30BWith 19 others
  11. 2025

    7 rounds

  12. Dec
    KrakenGrowth · GB · TechStartups$1.0BWith 15 others
  13. Dec
    AntithesisSeries A · US · Ventureburn$105MLed
  14. Nov
    X-Energy Reactor CompanySeries D · US · Firms' own news pages$700MLed
  15. Sept
    AnthropicSeries F · US · Crunchbase News$13BWith 21 others
  16. Jul
    Thinking Machines LabSeries A · US · TechCrunch$2.0BWith 6 others
  17. Mar
    AnthropicDebt · US · Crunchbase News$750MWith 10 others
  18. Feb
    AnthropicGrowth · US · TechCrunch$3.5BWith 9 others
  19. 2022

    1 round

  20. Aug
    Cera Care LimitedGrowth · GB · Firms' own news pages$320MWith 10 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.

What the register says

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

5+funds on filenumbered funds in its name

Who they invest alongside

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

D1 Capital PartnersHedge fund5rounds togetherGeneral CatalystVC firm5rounds togetherLightspeed Venture PartnersVC firm5rounds togetherBlackstone GroupPrivate equity4rounds togetherCoatueVC firm4rounds togetherFidelityVC firm4rounds togetherMGXGrowth equity4rounds togetherMenlo VenturesVC firm4rounds togetherNVIDIACompany4rounds togetherSequoia CapitalVC firm4rounds togetherAccelVC firm3rounds togetherAltimeterVC firm3rounds together

Recently backed

The latest companies Jane Street put money into.

Etched$700M · Aug 2026Firmus Technologies$2.0B · Aug 2026Anthropic$50B · May 2026Fluidstack$1.0B · Apr 2026MatX$500M · Feb 2026Kraken$1.0B · Dec 2025

On podcasts

1 episode naming Jane Street in the title, and 3 more that mention it.

Mentioned in

Quick answers about Jane Street

What does Jane Street invest in?

Jane Street invests most often at Growth and Series C (54% of the rounds on record).

How active is Jane Street?

17 investments on record, 12 of them in the last 12 months, and it led 5. The most recent was in Oct 2026.

What has Jane Street invested in recently?

Its most recent investments on record: Oxide (Series D, Oct 2026), Etched (Undisclosed round, Aug 2026) and Firmus Technologies (Growth, Aug 2026).

How big are Jane Street's cheques?

The median round it joins is $1.0B.

Does Jane Street lead rounds?

Yes: it led 5 of its 17 investments on record (29%).

Where does Jane Street invest?

Most of the companies it backs are in the United States (76%), the United Kingdom (18%) and Australia (6%).

Is Jane Street investing now?

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

Who does Jane Street invest alongside?

Most often D1 Capital Partners (5 rounds together), General Catalyst (5 rounds together) and Lightspeed Venture Partners (5 rounds together).

Raising now?

Find the investors who back rounds like yours, and keep every conversation on one fundraising board.

Find similar investorsOpen your CRM

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