X-Energy is an advanced nuclear reactor and fuel engineering company developing small modular reactors (SMRs) and proprietary TRISO fuel technology. The company's flagship Xe-100 is a pebble-bed, high-temperature gas-cooled reactor designed for clean energy production, industrial process heat, and data center power. X-Energy manufactures TRISO-X fuel containing HALEU (high-assay, low-enriched uranium) at its TX-1 facility in Oak Ridge, Tennessee, licensed by the NRC in 2026. Founded by Kam Ghaffarian, X-Energy has raised over $3.4 billion including $1.02 billion from its April 2026 Nasdaq IPO.
X-Energy is publicly traded
IPO'd on April 24, 2026
This company is no longer available on our private secondary market. Shares can be traded publicly under XE.
Company data and valuation marks are estimates and may be incomplete, stale, erroneous, or revised.
Founded
2009
Employees
916–1,784
Total Funding
$3.27B
7 rounds
Last Private Valuation
$9.1B
April 25, 2026
Total raised $3.27B across 7 rounds
Funding data and valuation marks are estimates and may be incomplete, stale, erroneous, or revised.
Last updated 06-25-2026
Latest Round
Type
IPO
Date
April 25, 2026
Amount
$1.02B
Valuation
$9.1B
Lead Investors
| Date | Round | Amount Raised | Valuation | Lead Investors |
|---|---|---|---|---|
| April 25, 2026 | IPO | $1.02B | $9.1B | Public market |
| November 24, 2025 | Series D | $700M | — | Jane Street |
| February 2025 | Series C-1 (upsized close) | $700M | — | Amazon Climate Pledge Fund |
Funding data and valuation marks are estimates and may be incomplete, stale, erroneous, or revised.
Valuation indexed to 1.0× at the selected entry round. Valuation marks are estimates and may contain errors. Hover each dot to compare.
Entry · Series C (initial close)
$2B
Jan 2022
X-Energy today
$9.1B
Apr 2026 · latest mark
X-Energy multiple
4.5x
valuation uplift since first round
Y-axis is logarithmic. Hollow dots = estimated valuations. Does not represent realized investor returns.
Dr. Kam Ghaffarian
Founder & Executive Chairman
J. Clay Sell
Chief Executive Officer
Dinkar S. Bhatia
Chief Commercial Officer
Rachel Lappin Scheinman
Chief Human Capital Officer
Steve Miller
Executive Vice President, Chief Administration & Governance Officer
Sam Levenback
Senior Vice President, Chief Growth & Strategy Officer
Benjamin Reinke
Senior Vice President, Global Business Development & Deputy Chief Commercial Officer
Competitor list is illustrative and may be incomplete, stale, or erroneous.
NuScale Power
Developer of light-water small modular reactors for electricity and process heat applications; NYSE-listed (SMR)
TerraPower
Bill Gates-backed advanced reactor developer focused on sodium-cooled fast reactors and other next-gen technologies
Kairos Power
Google-backed advanced reactor developer working on molten salt-cooled fluoride high-temperature reactors
Oklo
Micro-reactor developer focused on disposal of nuclear waste; NYSE-listed (OKLO)
Holtec International
Provides specialized nuclear equipment, services, and storage solutions including SMR development
Traditional Light-Water Reactors (LWR) / Gen III+
Established nuclear technology including conventional large-scale reactors from vendors like Westinghouse, GE Hitachi
Yes, X-Energy is publicly traded under the ticker symbol XE on the NASDAQ. The company went public in April 24, 2026.
X-Energy trades under the ticker symbol XE on the NASDAQ. It began trading in April 24, 2026.
X-Energy (XE on the NASDAQ) shares can be purchased through any standard brokerage account — including Fidelity, Charles Schwab, TD Ameritrade, and online platforms like Robinhood or E*TRADE. Search for the ticker XE to place an order.
X-Energy went public in April 24, 2026 via ipo, with an offering valuation of approximately $9.1B. X-Energy completed its IPO on April 24, 2026, listing on Nasdaq under ticker symbol XE. The company priced 44.25 million Class A shares at $23 per share, raising $1.02 billion. Stock opened at $30.11 on first day and closed at $29.20, up 27%, establishing a market capitalization of $11.6 billion. This represents the largest pure-play advanced nuclear listing in U.S. market history.
X-Energy raised $3.27B across 7 disclosed funding rounds prior to its public listing.
X-Energy was founded by Dr. Kam Ghaffarian in 2009.
X-Energy is headquartered in Rockville, MD, USA.
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