Vertiv, Seagate crush earnings as capacity strategies split

Both companies are riding the same AI data center buildout, but their strategies have diverged. Vertiv, which sells the power and thermal equipment that keeps GPU clusters running, is adding capacity — it announced a planned acquisition of UtilityInnovation Group, following ThermoKey and Strategic Thermal Labs earlier in the year, and is validating 800-volt DC architectures with NVIDIA and Foxconn's Vision Bay AI. Seagate, which sells the mass-capacity drives storing that data, is doing the opposite: nearline capacity is almost fully allocated through calendar 2027, and growth is expected to come from areal density gains rather than added factory capacity.

The financial pictures differ too. Vertiv's Q2 2026 revenue rose 24.1% YoY with adjusted operating margin expanding 410 basis points to 22.6%, and it raised its full-year target to roughly $14 billion in sales. Seagate's fiscal Q4 revenue jumped 48.5% YoY with non-GAAP gross margin of 52.7%, and management targets at least 20% annual revenue growth through mix and pricing. Still, Vertiv shares fell 9.63% on September 9 after a 109.52% one-year run, suggesting high expectations, while Seagate is up 222.51% year to date.

The relative setup appears to favor Seagate on near-term earnings visibility, with booked capacity through fiscal 2027, a 2027 EPS consensus of $35.78, and 20 upward revisions in 30 days. Vertiv remains the higher-beta bet on the buildout itself, with its acquisition and 800-volt roadmap keeping optionality alive. The outcome for Seagate may hinge on whether Mozaic 4 crossover and Mozaic 5 qualification stay on schedule in late calendar 2027.