Lumentum, SanDisk, and IREN Are All Rallying Today — Here’s the $27 Billion Reason Why

Lumentum is the kind of company that benefits quietly until suddenly it doesn't. It manufactures the optical and photonic components that physically move data inside AI data centers, the fiber-optic interconnects that let thousands of GPUs talk to each other at the speed of light. Every new hyperscaler commitment to AI infrastructure is, indirectly, a commitment to buying more of what Lumentum makes.Lumentum stock is up approximately 6% today, trading around $657. The stock is already up 11% over the past w ...