COHH is trading at $6.60 (-5.39%) in pre-market on September 22, 2026, after profit-taking following a strong multi-session rally tied to Coherent’s PhotonLink integrated-optics unveiling at ECOC 2026.
- PhotonLink targets AI data-center connectivity, supporting co-packaged and near-packaged optics.
- The pre-market decline appears to reflect a pullback in Coherent shares, amplified by COHH’s 2x daily exposure.
- Slightly softer equity futures are adding modest pressure, but no major scheduled U.S. economic release is driving the move.