X-Energy is trading 4.3% down at $14.97 after broader risk-off trading pressured growth-sensitive shares.
- The S&P 500, Nasdaq, and Dow are all down more than 0.5%; the 10-year Treasury yield reached 5.02%.
- On September 15, 2026, X-Energy announced its Xe-100 reactor entered the UK’s multi-year Generic Design Assessment with Centrica, a positive strategic development that has not offset macro pressure.