X-energy stock pops 27% on first day of trading following upsized IPO

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TLDR

  • Nuclear startup X-energy debuted on the Nasdaq at $23/share, closing at $29.20, up 27%.

Key Facts

  • Shares opened at $30.11 and closed at $29.20, valuing the company at $11.5 billion.
  • The $23 IPO price was already revised up from a $16–$19 roadshow target.
  • X-energy’s 80-megawatt modular reactor design is significantly smaller than conventional nuclear plants.
  • Amazon has committed to buying up to 5 gigawatts of capacity; Dow will host the first plant.

Why It Matters

  • The upsized IPO and strong debut signal a notable shift in investor appetite for nuclear energy startups.
  • Construction of X-energy’s fuel facility is underway, though no power plant construction has started yet.

Tim De Chant, TechCrunch · 2026-04-24 · Read the original