Are there any publicly traded fusion energy companies?

Yes. As of 2026 a small but growing list of fusion companies trade on public markets — most notably General Fusion (NASDAQ: GFUS) following its 2026 SPAC listing. Most leading pure-plays (Commonwealth Fusion Systems, Helion, TAE, Pacific Fusion) remain private, but retail investors can gain indirect exposure through suppliers, utilities, and clean-energy ETFs.

Is Commonwealth Fusion Systems publicly traded?

No. Commonwealth Fusion Systems (CFS) is privately held, backed by Breakthrough Energy Ventures, Tiger Global, Google, and others. It has raised more than $3B and has not announced an IPO timeline.

How can retail investors invest in fusion energy?

Retail investors can buy shares in the few publicly listed pure-plays (e.g. GFUS), in suppliers of critical hardware (HTS magnets, vacuum systems, pulsed power), in utilities signing fusion PPAs, or in broad clean-energy and nuclear ETFs that include fusion-adjacent names.

Publicly Traded Fusion Energy Companies (2026 Guide)

The short answer

Yes — but the universe is small. As of mid-2026, General Fusion (NASDAQ: GFUS) is the highest-profile publicly traded fusion energy company after its 2026 SPAC listing. The other leading pure-plays — Commonwealth Fusion Systems, Helion, TAE Technologies, and Pacific Fusion — remain privately held. Retail investors who want exposure today generally do it through a mix of pure-plays, suppliers, utilities, and ETFs.

1. Pure-play fusion stocks

General Fusion
NASDAQ: GFUS
Magnetized Target Fusion (MTF) · Richmond, BC
Listed via SPAC merger in 2026. The first western pure-play fusion company on a major exchange.

2. Supplier exposure

Ameresco
NYSE: AMRC
Energy infrastructure with growing nuclear/fusion-adjacent work.
BWX Technologies
NYSE: BWXT
Nuclear components supplier; tritium handling expertise relevant to D-T fusion.
Eaton
NYSE: ETN
Power conversion and pulsed-power electronics used in fusion prototypes.
Eos Energy
NASDAQ: EOSE
Grid-scale storage that pairs with intermittent and baseload clean power including future fusion.
GE Vernova
NYSE: GE
Turbine generators that any thermal-cycle fusion plant will need.

3. Utilities signing fusion PPAs

Constellation Energy
NYSE: CEG
Largest US clean-power utility; signed early PPA discussions for fusion offtake.
Vistra
NYSE: VST
Hyperscaler-aligned utility tracking advanced reactors and fusion.

4. ETFs and baskets

VanEck Uranium + Nuclear ETF
NYSE: NLR
Broad nuclear basket; closest listed proxy for the fusion build-out.
Sprott Uranium Miners ETF
NYSE: URNM
Upstream nuclear fuel exposure that benefits from a fusion narrative.
iShares Global Clean Energy ETF
NASDAQ: ICLN
Diversified clean-energy basket — modest direct fusion weight.

Not investment advice

This guide is editorial. Fusion is pre-commercial — tickers, valuations, and listed status can change fast. Always confirm with a primary filing and your own broker.

Are private fusion companies going public next?

Bankers expect more fusion SPAC and IPO activity over 2026–2028 as milestone-based DOE awards mature and hyperscaler PPAs underwrite first-of-a-kind plants. Track new listings in our news feed and capital flows in the funding dashboard.

Publicly Traded Fusion Energy Companies