Commonwealth Fusion Systems Stock
Private company — Commonwealth Fusion Systems is privately held. Its shares are not listed on any public exchange and can only be accessed through private secondary transactions.
Status source: AXEVIL investment team
$263.96 per share (AXEVIL consensus estimate)
Source: AXEVIL consensus of recent secondary transactions · as of 6 October 2026
Data last updated: 6 October 2026
About Commonwealth Fusion Systems
An MIT spinoff. Building commercial fusion power plants based on a tokamak with high-temperature superconducting magnets. The SPARC device is set to demonstrate net energy gain, to be followed by the commercial ARC plant.
Commonwealth Fusion Systems is a US fusion energy company spun out of MIT in 2018, headquartered in Devens. It builds power plants based on the tokamak — a donut-shaped device that confines plasma with a magnetic field. Its key innovation is high-temperature superconducting magnets, which make the reactor several times more compact than earlier designs; a 20-tesla magnet was successfully tested in September 2021. The SPARC demonstration device in Devens is roughly 80% complete and is expected to produce more energy than it consumes for the first time in 2027. It will be followed by the 400 MW ARC plant in Virginia, half of whose output has already been contracted by Google. The company has raised $4 billion in total, with the most recent round — $1 billion — closed in July 2026.
- Sector: Energy
- Headquarters: Devens, Massachusetts, USA
- Founded: 2018
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Frequently asked questions
Can I buy Commonwealth Fusion Systems stock?
Not on a public exchange — Commonwealth Fusion Systems is privately held. Shares change hands only in private secondary transactions. AXEVIL structures those as dedicated US special purpose vehicles for accredited investors, subject to availability and to the rules of your jurisdiction.
How much is one Commonwealth Fusion Systems share?
A private company has no single official price. AXEVIL's consensus estimate is $263.96 per share as of 6 October 2026.
When will Commonwealth Fusion Systems IPO?
No listing has been announced. AXEVIL does not forecast IPO dates — this page states what has actually been filed or reported, with the date it was last checked.
Is Commonwealth Fusion Systems publicly traded?
No. Commonwealth Fusion Systems is a private company and its shares are not listed on any public exchange.
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Risk disclosure
Nothing on this page is an offer to sell or a solicitation to buy any security, and it is not investment advice. Valuations and share prices shown here are AXEVIL estimates built from primary sources — filings, announced rounds and completed secondary transactions — not quoted market prices, and they can be revised. Private-company shares are illiquid, may be impossible to sell, and the entire amount invested can be lost. Availability depends on your jurisdiction and on accredited-investor status.