Helion Energy is a private fusion-energy company developing magneto-inertial fusion systems to generate electricity directly from plasma. It is building its first commercial power plant in Washington and targets grid power from fusion.
Access to pre-IPO shares is available to accredited investors through UpMarket.
Latest Price
$5.425B
Series F, Jan 2025, Perplexity
UpMarket Estimate
$5.4B
Based on UpMarket valuation model
Previous Price
$1.25B
Series D 2020
How to Invest in Helion Energy Through UpMarket
Helion Energy shares are not on public exchanges. UpMarket provides accredited investors access through secondary market transactions.
Step 01
Verify accredited investor status
Confirm eligibility under SEC Rule 501 of Regulation D. Income or net worth threshold applies.
Step 02
Create an UpMarket account
Complete KYC/AML onboarding. Typically 1–2 business days. Licensed rep assigned on signup.
Step 03
Review available Helion Energy offerings
Full offering memoranda and risk disclosures provided before any commitment is required.
Step 04
Complete subscription documents
Review and sign subscription agreement. All documents handled digitally through the platform.
Step 05
Fund your investment
Wire transfer or ACH. $50K minimum. Funds held in custodial account until close.
Pre-IPO investments are illiquid, speculative, and involve risk of total loss of capital.
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Valuation Growth Over Time
Post-money valuation by round
Previous roundsMost recent
Date
Round
PPS (split-adj.)
Valuation
Jan 2025
Series F
$5.425B
2020
Series D
$1.25B
Helion Energy Revenue and Growth
Annual revenue
Why Investors Are Watching Helion Energy
Growth Signal
Helion closed a $425M Series F to scale commercialization
Helion announced a $425 million Series F round on Jan. 28, 2025, bringing total invested capital to over $1 billion. The company said the funds will scale commercialization of its fusion power technology as it targets first commercial deployment.
Product Milestone
Helion broke ground on Orion, its first commercial plant
Helion broke ground on Orion in Malaga, Washington, in July 2025 on land leased from Chelan County PUD. The project received a Conditional Use Permit in October 2025 and is targeted to deliver electricity to Microsoft by 2028.
Market Opportunity
Helion is pursuing the first fusion PPA with Microsoft
Helion is working under what sources describe as the world’s first fusion power purchase agreement, with Microsoft as the offtaker. Nucor also backed the company with a $35 million investment tied to a 500 MW clean-energy plant concept.
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No. As of March 2026, Helion Energy is a private company and does not trade on any public stock exchange. Accredited investors can access Helion Energy shares through UpMarket, a FINRA-registered broker-dealer that specializes in pre-IPO investments.
Helion Energy does not have a public stock price because it is privately held. The most recent known share price comes from its last funding round. Pre-IPO share prices on the secondary market may differ from the last round price depending on supply, demand, and market conditions.
Yes. Accredited investors can indicate interest in Helion Energy shares through UpMarket by filling out the form on this page or creating an account at upmarket.co. All pre-IPO offerings are subject to availability and require a $50,000 minimum investment. UpMarket is a FINRA-registered broker-dealer and has brokered alternative investments since 2019.
Pre-IPO investments carry significant risks. Helion Energy shares are illiquid, meaning there is no public market to sell them quickly. There is no guaranteed exit timeline or return. The investment is speculative in nature, and investors should be prepared for the possibility of total loss. Valuations of private companies can fluctuate substantially between funding rounds. Investors should consult their financial advisor and review all offering documents before investing.
In a pre-IPO transaction, accredited investors purchase shares from existing shareholders (such as employees, early investors, or other holders) through secondary market platforms. The company itself does not issue new shares in these transactions. UpMarket facilitates these trades as a FINRA-registered broker-dealer, handling compliance, documentation, and settlement on behalf of both parties.
There are two primary exit paths for pre-IPO holdings: selling your shares on the secondary market to another buyer, or holding until the company completes an IPO or is acquired. Both paths are subject to transfer restrictions, company approval (right of first refusal), and market conditions. The timing of any exit is unpredictable, and investors should plan for a multi-year holding period.
The minimum investment for most pre-IPO offerings on UpMarket is $50,000. This amount may vary depending on the specific offering and share availability. There are no fees to create an UpMarket account or browse available investments. Investors only pay transaction-related fees when they complete an investment.
UpMarket's valuation estimate of is derived from a proprietary model that incorporates multiple data sources: funding round data (Caplight), revenue estimates (Sacra), secondary market pricing, and public company comparables. The model applies a private company discount to the public comp multiple to account for illiquidity and information asymmetry. This estimate is not investment advice and may differ substantially from the price at which shares actually trade.
Helion Energy is a private fusion-energy company developing magneto-inertial fusion systems to generate electricity directly from plasma, with $114.1M in 2025 revenue and a $5.4B valuation, after closing a $425M Series F to scale commercialization — accredited investors can access Helion Energy stock through UpMarket.