Amazon-backed X-energy files for $800 million IPO to advance modular nuclear reactors

Amazon-backed nuclear startup X-energy has filed for an initial public offering to raise up to $800 million, marking a significant step for advanced nuclear technology amid surging demand for clean energy. The Rockville, Maryland-based company, a leader in small modular reactors and fuel technology, submitted a draft registration statement to the SEC on March 20, 2026, and intends to list on the Nasdaq Global Select Market under the ticker symbol "XE". According to its official announcement, the number of shares and price range remain undetermined, with the offering subject to SEC review and market conditions.

This move follows a series of major financial milestones for X-energy, which has attracted heavyweights like Amazon through a $500 million Series C-1 round to advance its Xe-100 reactors and fuel production. Amazon's investment supports plans to deploy reactors generating carbon-free power, including four units producing 320 megawatts by the early 2030s. The company also secured a $700 million Series D led by Jane Street and partnerships like one with Dow for four reactors at its Texas facility by 2030, backed by up to $1.23 billion from the Department of Energy.

X-energy's technology targets explosive electricity needs driven by AI data centers and electrification, positioning its meltdown-proof, modular reactors as a scalable solution for reliable clean energy. Founded in 2009 by Kam Ghaffarian, the firm shifted from a planned SPAC merger in 2023 to this traditional IPO path, as reported by TechCrunch. Recent filings indicate a potential offering of up to 42.86 million shares at $16 to $19 each, though details could evolve.

The IPO signals growing momentum in advanced nuclear, with Axios noting it reflects strong financial footing and bipartisan political support for the sector. Investors and underwriters like J.P. Morgan and Morgan Stanley are involved, highlighting Wall Street's interest. For stakeholders, this could unlock capital to complete reactor designs, licensing, and a fuel facility in Tennessee, accelerating projects vital for net-zero goals.

What happens next remains tied to SEC approval and market dynamics, but X-energy's filing underscores nuclear's resurgence as data centers and industry demand unprecedented power growth. Affected parties include tech giants like Amazon seeking sustainable energy, chemical firms like Dow, and investors eyeing clean tech valuations. While not yet priced, the up-to-$800 million target positions X-energy as a key player in redefining nuclear for the modern economy.