Coherent is already large and now priced as a core AI-infrastructure beneficiary. The upside into 2030 is driven more by sustained execution (higher-speed
optical interconnect ramps, better delivery/yields, and balance-sheet cleanup) than by a brand-new market category. The stock can still work if management turns capacity expansion into contracted demand and monetizes reliability/security features, but buyer power and multi-sourcing make it hard to hold today’s
premium valuation indefinitely.