United States · 
Who invested in X-Energy Reactor Company?
X-Energy Reactor Company's investors include Jane Street, Alumni Ventures, Galvanize, XTX Ventures and Emerson Collective, and 7 more on record. Jane Street led its latest round.
United States · Series D startup
Who invested in X-Energy Reactor Company
One round we have observed, with the 12 investors named in it. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.
Raised 11 months ago
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Funding summaryUpdated 5 Nov 2026
$700Mraised across 1 round since 2025, from 4 sources
- Latest round
- Series D, $700MNov 2025
- Led by
- Jane Street
- Investors
- 12 (1 led)
The rounds
- Nov 2025
Funding filed with regulators
X-Energy Reactor Company filed one raise, $1.9M in all. Filings say how much was sold and to how many investors; they never name the investors.
- Jan 2021$1.9MSEC Form D
Founders and team
From the SEC filings it signed: 1 on the team.
- Matthew J. YetmanManager of the Issueri
Everyone who backed them
Jane StreetGrowth equity1round, led 1
Segra Capital ManagementGrowth equity1round
Missing a round, or an investor who was in one? Tell us.
Quick answers about X-Energy Reactor Company
How much has X-Energy Reactor Company raised?
X-Energy Reactor Company has raised $700M across 1 round since 2025.
When did X-Energy Reactor Company last raise?
X-Energy Reactor Company's most recent round was a Series D of $700M in Nov 2025, led by Jane Street.
What was X-Energy Reactor Company's biggest round?
Its most recent round, $700M in Nov 2025, is also its largest on record.
Who backed X-Energy Reactor Company first?
X-Energy Reactor Company's first round on record, in Nov 2025, was backed by Jane Street, Alumni Ventures and Galvanize and 9 others.
What stage is X-Energy Reactor Company at?
X-Energy Reactor Company's latest named round is a Series D, in Nov 2025.
Where is X-Energy Reactor Company based?
X-Energy Reactor Company is based in the United States.
Who led X-Energy Reactor Company's rounds?
Jane Street led the Series D in 2025.
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