AI infrastructure stocks surge after strong earnings from CoreWeave, Supermicro

AI infrastructure stocks rallied after strong earnings and upbeat guidance from several key players across the AI buildout chain. Supermicro reported fourth-quarter results that beat expectations and issued a strong outlook, while Nebius posted quarterly revenue above analyst estimates. CoreWeave’s results highlighted accelerating demand and a growing backlog, lifting sentiment across neocloud and AI hosting names such as Applied Digital and IREN. The rally extended to related beneficiaries including optical and data-center suppliers like Lumentum, Coherent and Ciena, as well as memory names such as Micron and the Roundhill Memory ETF. The move reinforces investor focus on the “picks and shovels” of AI rather than only the largest platform names, suggesting the earnings season is validating infrastructure spending tied to AI adoption.