COHH is trading at $4.10, up 3.02% versus the regular-session close, following a late rebound in broader markets; no specific Coherent after-hours catalyst was verified. - COHH closed October 15 at $3.98 after a steep regular-session decline; the after-hours uptick does not reverse broader weakness. - Hotter-than-expected September CPI stoked rate-hike concerns, pressuring rate-sensitive technology and AI shares. - Chip and AI infrastructure selling weighed on Coherent; COHH targets 2x Coherent’s daily performance.