Coherent is trading up 5.21% now at $252.10, with semiconductor-sector strength potentially providing support; no verified Coherent-specific announcement explaining the after-hours move surfaced.
- The prior regular-session close on October 28 was $239.62.
- The broader semiconductor rally followed SK Hynix’s record results, shareholder-return announcement, and outlook for prolonged memory tightness; available reporting does not directly attribute Coherent’s move to a specific catalyst.