Helion Energy Stock Price, Valuation & IPO
Private company — Helion Energy 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
$167.40 per share (AXEVIL consensus estimate)
Source: AXEVIL consensus of recent secondary transactions · as of 27 October 2026
Last round valuation: $16B
Source: G-1, June 2026, post-money
Total raised: $1.5B+
Data last updated: 27 October 2026
About Helion Energy
Developing magneto-inertial fusion using deuterium and helium-3 with no neutron output, and building the first commercial fusion power plant. Has signed an agreement to supply Microsoft with electricity by 2028.
Helion Energy is an American fusion company, founded in 2013 by four plasma engineers in Redmond, headquartered in Everett. It is building a power plant that draws current directly from plasma, without a steam boiler or turbine: two plasma clumps collide and are compressed by magnets, and after fusion the plasma expands, returning energy directly to the electrical circuit. In 2026, its seventh prototype, Polaris, became the first private device to achieve deuterium-tritium fusion. Its first plant, Orion, is being built under a contract with Microsoft and is due to come online in 2028, followed by a 500 MW project for Nucor. Following a Series G round, the company's valuation reached $15.5 billion in June 2026, with more than $1.5 billion raised to date.
- Sector: Energy
- Headquarters: Everett, Washington, USA
- Founded: 2013
Key highlights
- Electricity from fusion at Polaris. The prototype's next goal is to capture part of the fusion energy as current on capacitors. Such a result would be a first for the industry and would settle skeptics' main objection to Helion's design.
- Orion launch for Microsoft. The plant is due to come online in 2028 and reach 50 MW after a year of commissioning. According to Axios, Orion may not reach full capacity until 2030, so every construction milestone matters for confidence in the timeline.
- A 500 MW plant for Nucor. The project is ten times the size of Orion and is being built at an industrial customer's site rather than for the grid. A successful launch would open up the market of factories with heavy, constant power loads for Helion.
- A major deal with OpenAI. According to Axios, the companies discussed selling OpenAI 12.5% of Helion's future output. If signed, the deal would give Helion a second major AI-sector buyer needing hundreds of plants.
- In-house capacitor production. A facility is starting up in Everett where people and automation assemble capacitors and semiconductor modules. Volume production of key components lowers the cost of each subsequent machine and removes dependence on outside suppliers.
- A standardized plant design license. Helion is pursuing approval granted for the plant design as a whole rather than for each site individually. This would allow identical plants to be built faster and more cheaply, without re-approval from scratch each time.
Funding rounds
| Date | Round | Price / share | Post-money valuation |
|---|---|---|---|
| 4 June 2026 | G-1 | $179.52 | $16B |
| 28 January 2025 | F | $72.53 | $5.4B |
| 27 September 2023 | E-1 | $62.72 | $4.6B |
| 5 November 2021 | E | $41.81 | $3.6B |
| 23 September 2020 | D | $22.79 | $1.3B |
| 1 January 2019 | C | $9.30 | $516M |
| 19 June 2015 | B | $0.71 | $38M |
| 14 August 2014 | A-1 | $2.60 | $22M |
Frequently asked questions
How can I buy Helion Energy stock before the IPO?
Not on a public exchange — Helion Energy 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.
What is the Helion Energy stock price?
A private company has no single official share price. AXEVIL's consensus estimate is $167.40 per share as of 27 October 2026. Its most recent round implied a post-money valuation of $16B (June 2026).
What is Helion Energy's valuation (net worth)?
Helion Energy's most recent funding round valued the company at $16B post-money (June 2026) — the latest primary-market measure of what the company is worth. Secondary trades can price its shares above or below that round.
When will Helion Energy 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 Helion Energy publicly traded?
No. Helion Energy is a private company and its shares are not listed on any public exchange.
Does Helion Energy have a stock symbol?
No. Helion Energy has no ticker symbol because its shares are not listed on any exchange; a symbol is assigned only at an IPO or direct listing.
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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.