Amazon-Backed Nuclear Firm X-Energy Raises $1.02 Billion in IPO

An R&D scientist at X-Energy looks at a sample of Triso fuel in Oak Ridge, Tennessee.

Photographer: George Walker IV/AP Photo

X-Energy Inc., a nuclear energy firm that counts Amazon.com Inc. as a backer, raised $1.02 billion in an upsized US initial public offering that priced above the marketed range.

The Rockville, Maryland-based company sold 44.3 million shares for $23 each, according to a statementBloomberg Terminal Thursday. X-Energy had marketed the shares for $16 to $19 each.