** Nuclear reactor developer X-Energy's XE.O shares up 16% at $33.85 on Mon, following their stellar Nasdaq debut
** XE shares finished 27% above $23 issue price on Fri after co raised $1 bln in upsized IPO, signaling strong interest in developers of carbon-free energy to potentially fuel the artificial intelligence boom
** Co, which counts high-profile backers including cloud giant Amazon.com AMZN.O and Ken Griffin, founder of hedge fund Citadel, achieved roughly $11.5 bln market cap at market close on Fri
** Rockville, Maryland-based XE uses small modular nuclear reactors to produce energy for industrial facilities and data centers
** Prior to the IPO, AMZN was a 29% shareholder, according to the prospectus filing
** XE reported ~$109.3 mln in rev and ~$390 mln net loss in 2025
(Lance Tupper is a Reuters market analyst. The views expressed are his own)
((lance.tupper@tr.com 1-646-279-6380))