COHH is trading at $6.68, down 9.61%, as higher Treasury yields and oil-price inflation concerns pressure risk appetite. - COHH has 2x daily exposure to Coherent, amplifying the underlying stock’s weakness. - Optical-communications peers are also falling in pre-market trading: Coherent is down over 3%, while Lumentum and Credo are down over 2%. - Middle East shipping tensions are lifting oil, renewing concerns about sustained high rates.