# X-Energy Reactor Company funding: rounds and investors

> X-Energy Reactor Company has raised $700M across 1 round since 2025. Investors include Jane Street, Alumni Ventures and Galvanize. Every round with its source.

Source: https://millionrounds.com/company/x-energy-reactor-company (Millionrounds; every figure on the page links to its filing or article)

United States · [Series D startup](https://millionrounds.com/companies)

# 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.

Construction Energy

Raised 11 months ago

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Funding summary Updated 5 Nov 2026

**$700M** raised across 1 round since 2025, from 4 sources

- **Latest round:** Series D, $700M Nov 2025
- **Led by:** Jane Street
- **Investors:** 12 (1 led)

See who backed them

## The rounds

- **Nov 2025** Series D **$700M** [Jane Street](https://millionrounds.com/fund/jane-street) Lead [Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund) [Galvanize](https://millionrounds.com/fund/galvanize) [XTX Ventures](https://millionrounds.com/fund/xtx-ventures) [Emerson Collective](https://millionrounds.com/fund/emerson-collective) [Point72](https://millionrounds.com/fund/point72) [• Ark Invest](https://millionrounds.com/fund/ark-invest) [NGP](https://millionrounds.com/fund/ngp) [Corner Capital](https://millionrounds.com/fund/corner-capital) [Hood River Capital Management](https://millionrounds.com/fund/hood-river-capital-management) [Segra Capital Management](https://millionrounds.com/fund/segra-capital-management) [Reaves Asset Management](https://millionrounds.com/fund/reaves-asset-management) Reported by Firms' own news pages and 3 others

## 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 **$1.9M** 9 investors options, securities on exercise SEC Form D

## Founders and team

From the SEC filings it signed: 1 on the team.

- **Matthew J. Yetman** Manager of the Issuer i

## Everyone who backed them

[Jane Street](https://millionrounds.com/fund/jane-street) Growth equity **1** round, led 1

[Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund) VC firm **1** round

[Galvanize](https://millionrounds.com/fund/galvanize) VC firm **1** round

[XTX Ventures](https://millionrounds.com/fund/xtx-ventures) VC firm **1** round

[Emerson Collective](https://millionrounds.com/fund/emerson-collective) Family office **1** round

[Point72](https://millionrounds.com/fund/point72) Hedge fund **1** round

[• Ark Invest](https://millionrounds.com/fund/ark-invest) Growth equity **1** round

[NGP](https://millionrounds.com/fund/ngp) Private equity **1** round

[Corner Capital](https://millionrounds.com/fund/corner-capital) Private equity **1** round

[Hood River Capital Management](https://millionrounds.com/fund/hood-river-capital-management) Growth equity **1** round

[Segra Capital Management](https://millionrounds.com/fund/segra-capital-management) Growth equity **1** round

[Reaves Asset Management](https://millionrounds.com/fund/reaves-asset-management) Growth equity **1** round

Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=x-energy-reactor-company).

## Quick answers about X-Energy Reactor Company

### 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.

### 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.

## Companies like X-Energy Reactor Company

In the same sector, and raised in the last eighteen months.

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