Generac (GNRC) surged 12% premarket after beating Q1 expectations on data centre orders. Generac raised its 2026 sales outlook to mid-high teens growth, with EBITDA margins expected at 18.5-19.5%. CEO Aaron Jagdfeld cited strong backlog, the Enercon acquisition, and hyperscale customer wins as key drivers. The company is expanding its data centre solutions for AI infrastructure.