COHH is trading 3.25% higher in after-hours trading, likely reflecting thin liquidity and relief buying after heavy regular-session selling in Coherent shares and related AI-photonics stocks.

  • Renewed concern about AI infrastructure spending followed prominent AI leaders’ calls for slower development, pressuring optical and semiconductor names.
  • Coherent’s recent earnings confirmed strong AI-data-center demand, but profit-taking and valuation concerns remain.
  • No new COHH-specific earnings announcement was identified after the September 14 close; the S&P 500 and Nasdaq were also lower.