Funding round
Proxima Fusion Growth
Reported as "Growth Equity"
Proxima Fusion, which works in fusion power plant design and construction in Munich, raised $468M in a Growth round announced on 7 Jul 2026, led by XTX Ventures and East X Ventures, at a $2.70B post-money valuation. 21 firms took part. It is Proxima Fusion's fourth venture round on record; the one before was a Series A in Sep 2025.
$468M
Amount raised
$2.70B
Post-money valuation
21
Investors
2 leads
17%
Stake sold
new money over the post-money
Valuation
What this round says about the price
This round priced Proxima Fusion at $2.70B after the new money. The $468M bought investors about 17% of the company. It came 10 months after Proxima Fusion's Series A. It is 91% of the $515M Proxima Fusion has raised in the venture rounds on record. No later venture round is on record for Proxima Fusion.
Proxima Fusion's funding rounds
Proxima Fusion has 4 venture rounds on record. This one is highlighted.
Investors
Who put money in
XTX Ventures and East X Ventures led the round with 19 other firms.
Lead investors
- XTX Ventures new investor
- backs 4 venture-backed companies new investor
Also in the round
- RWE new investor
- GV backs 428 venture-backed companies new investor
- backs 13 venture-backed companies new investor
- backs 12 venture-backed companies new investor
- backs 35 venture-backed companies new investor
- Plural new investor
- backs 49 venture-backed companies new investor
- Balderton Capital backs 140 venture-backed companies new investor
- backs 92 venture-backed companies new investor
- DST Global backs 179 venture-backed companies new investor
- Brevan Howard Macro Venture new investor
- Lightspeed new investor
- backs 16 venture-backed companies new investor
- backs 58 venture-backed companies new investor
- backs 8 venture-backed companies new investor
- backs 70 venture-backed companies new investor
- CDP Venture Capital new investor
- backs 92 venture-backed companies new investor
- EIC Fund new investor
Use of proceeds
What the money is for
According to the announcement, the money goes to hiring, product development, scaling operations and working capital.
- Hiring
- Product development
- Scaling operations
- Working capital
Comparable rounds
How it compares
The closest in time, other companies' Growth rounds in Research Institutes:
| Company | Announced | Amount | Post-money | Led by |
|---|---|---|---|---|
| Research Institutes | 16 Sep 2026 | $216M | not disclosed | not named |
| Research Institutes | 21 Apr 2026 | $34M | not disclosed | East X Ventures and Starmaker One |
| Research Institutes | 1 Nov 2025 | $200M | not disclosed | Lightspeed Venture Partners |
Sources
Where this comes from
Reported by 9 sources.
Questions
Frequently asked
How much did Proxima Fusion raise in its Growth round?
Proxima Fusion raised $468M in its Growth round, announced in Jul 2026.
Who led Proxima Fusion's Growth round?
XTX Ventures and East X Ventures led it, with RWE, GV, KfW Capital, SPRIND and Burda Principal Investments and 14 more.
What was Proxima Fusion's valuation at the Growth round?
$2.70B post-money.