A quiet reactor tape let the uranium miners and the AI-power IPPs carry the session, with enCore leading and the SMR names flat.

enCore Energy (EU) led the vertical, up 4.9% to $1.07, a high-beta move in a sub-$2 name on no company-specific disclosure — the South Texas in-situ-recovery producer riding a broadly bid uranium complex rather than its own news. Cameco (CCJ) rose 2.7% to $87.47, Denison (DNN) +2.3%, the Sprott physical-miners vehicle (URNM) +1.1%, NexGen (NXE) +0.8% and Uranium Energy (UEC) +0.5%. The read is the uranium-supply chokepoint doing what it does when spot firms: the leveraged, lowest-float producers move most, with enCore's two operating central processing plants (Alta Mesa and Rosita) the US-production story underneath.

The softest name was NuScale (SMR), down 0.9% to $7.68 — a flat give-back, not a catalyst. The SMR-platform rung was mixed and quiet: Oklo (OKLO) +0.3%, BWX Technologies (BWXT) +0.4%, NANO Nuclear's small-cap line easing, and no design or order news to move the group. On a session where the miners and the power buyers did the work, the reactor developers simply marked time.

The real bid sat one rung over, on the AI-power demand the whole vertical ultimately maps to. The merchant IPPs ran hard — Constellation (CEG) +3.9% to $267.62, Vistra (VST) +3.5%, Talen (TLN) +3.5% — on datacenter electricity demand, the clearest signal in the complex. The enrichment names firmed too: Centrus (LEU) +1.6% to $141.44 and Mirion (MIR) +2.2%. The naval and component primes eased marginally, Curtiss-Wright and Huntington Ingalls both off less than a point, leaving the fuel-and-power ends of the chain the session's center of gravity.

The forward calendar is back-loaded but concrete. BWXT reports Q3 on November 2, the first naval-and-SMR component read of the quarter; NANO Nuclear's fiscal Q4 update lands November 15; and the Xe-100 construction-permit NRC review hits an 18-month milestone around December 16. The larger structural catalyst remains year-end: the Westinghouse/US-government definitive agreements meant to replace the binding term sheet are targeted before December 31, and the termination of Russian LEU import waivers on January 1, 2028 continues to anchor the domestic-enrichment thesis that LEU and the HALEU buildout trade on.