Amazon-backed nuclear startup X-Energy raises $1.02 billion in IPO as shares surge 27% on debut

X-Energy, the Amazon-backed nuclear energy startup, raised $1.02 billion in a blockbuster initial public offering on Thursday, pricing 44.3 million Class A shares at $23 each—well above its initial target range of $16 to $19 per share and surpassing its original goal of $800 million. The Rockville, Maryland-based company's shares surged 27% on their Nasdaq debut Friday under the ticker XE, closing sharply higher amid strong investor demand. According to Bloomberg, this marked one of the largest nuclear energy IPOs ever, fueled by surging interest in advanced nuclear technology.

The IPO was upsized due to overwhelming enthusiasm, with underwriters J.P. Morgan, Morgan Stanley, Jefferies, and Moelis & Company leading the effort. TechCrunch reported that X-Energy sold the shares at a 21% premium to the top of its marketed range, reflecting the market's appetite for nuclear solutions amid booming energy needs. ARK Investment Management signaled interest in purchasing up to $105 million in shares at the IPO price, underscoring confidence from high-profile investors.

At the heart of X-Energy's appeal are its small modular reactors (SMRs), compact nuclear systems designed to generate electricity or provide high-temperature heat for industrial use. The company has secured major deals, including one with Dow to supply heat and power to a chemical plant in Texas, and a landmark agreement with Amazon to deliver up to 5 gigawatts of nuclear power by 2039. Amazon's Climate Pledge Fund had previously led X-Energy's Series C-1 funding round, tying the startup closely to Big Tech's push for reliable, carbon-free energy.

This IPO arrives at a pivotal moment for nuclear power, driven by the explosive growth of data centers powering AI and cloud computing. As reported by TechCrunch, demand for nuclear energy has skyrocketed as tech giants like Amazon seek scalable alternatives to fossil fuels and intermittent renewables to meet massive electricity requirements. X-Energy's success highlights a broader renaissance in advanced nuclear tech, positioning it as a key player in the race to decarbonize heavy industry and hyperscale computing.

The strong debut benefits a wide array of stakeholders: X-Energy gains capital to accelerate reactor development and deployment, while investors tap into a high-growth sector. Amazon and Dow stand to gain from reliable energy partners, and the broader economy could see job creation in nuclear manufacturing and operations. Early trading gains—reaching as high as 31% in some reports—suggest the market views X-Energy as undervalued at IPO, though volatility remains a risk in the nascent public nuclear space.

Looking ahead, X-Energy must navigate regulatory hurdles for SMR commercialization, secure additional contracts, and deliver on its ambitious timelines. The funds raised will support scaling production and fulfilling existing deals, potentially paving the way for more nuclear IPOs as energy demands intensify. For now, the overwhelming investor response signals nuclear power's resurgence as a cornerstone of the clean energy transition.