SO is trading 15.76% higher at $95.99 after surging following the September 24, 2026 regular-session close of $82.92; no clear catalyst was identified.
- No credible September 24 company-specific announcement, earnings release, or late-breaking catalyst was found.
- Recent coverage cited Georgia Power’s earlier Google nuclear-upgrade agreement but did not link it to the after-hours jump.
- The broader market was modestly lower, offering no clear macro explanation for SO’s sharply opposite move.