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Jane Street logo
Jane Street
janestreet.com
janestreet.com • HQ: New York, United States • 1001-5000 employees • Founded 2000
HQ: New York, United States • 1001-5000 employees • Founded 2000
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Jane Street portfolio

Jane Street (Investor) is known to hold 7 companies, 1 of them startups. 2 of them are hiring now, with 24 open roles. In the last 12 months rounds in the press named it 1 times (1 as the lead). Its companies closed 1 venture rounds in 12 months, raising $105M. Most of them work in Software Testing & QA, Custom Software Development.

Source: Alion Investor Oct 18, 2026
Investments
7
1 of them startups
Hiring now
2
24 open roles
Deals in 12 months
1
1 as the lead
Rounds in 12 months
1
$105M raised

Companies Jane Street has invested in

All 7 Hiring now 2
Antithesis Software Testing & QA · United States Series A $105M · 10 mo ago lead 20 roles round in the pressDec 3, 2025
Visma Custom Software Development · Norway Venture round $4.3B · 2 yr ago 4 roles round in the pressDec 21, 2023
Visma Venture round $4.3B · 2 yr ago round in the pressDec 21, 2023
Visma Venture round $4.3B · 2 yr ago round in the pressDec 21, 2023
Visma Venture round $4.3B · 2 yr ago round in the pressDec 21, 2023
Visma Venture round $4.3B · 2 yr ago round in the pressDec 21, 2023
Visma Venture round $4.3B · 2 yr ago round in the pressDec 21, 2023

Focus

Markets
Software Testing & QA14%
Custom Software Development14%
Where its companies are
United States14%
Norway14%
Stage of its companies
Venture, series not stated86%
Series A14%

Questions about Jane Street

How many companies has Jane Street invested in?

Jane Street is known to hold 7 companies: 1 startups, and 0 exits so far, read from its own portfolio page and the funding rounds that name it.

Is Jane Street investing now?

Yes: in the last 12 months 1 rounds in the press named Jane Street (1 as the lead), and 0 companies joined its portfolio page in 90 days.

What does Jane Street invest in?

The markets of the companies Jane Street holds: Software Testing & QA (14%), Custom Software Development (14%).

Which Jane Street portfolio companies are hiring?

2 companies Jane Street holds are hiring now, with 24 open roles listed on this page.

Who does Jane Street invest alongside?

The investors that hold the most companies together with Jane Street: Hg, Altaroc, ICG, TPG.

How this page is made

A company counts as a holding when the investor’s own portfolio page links to it, a program’s catalog lists it, or a funding round in the press names the investor. The numbers are rebuilt every night; each company shows where it came from and when it was first seen.

Sources: 10 rounds in the press that name it

Jane Street portfolio: 7 known companies. Alion, Oct 18, 2026. https://alion.io/company/jane-street/portfolio

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