Particle.news
Download on the App Store

Arista Tumbles After Earnings Beat on Margin Squeeze and Lower-Than-Expected 2026 Growth

Lower margin guidance alongside a cooler full-year growth target recast the story as an execution test.

Overview

  • Arista shares fell about 14% in after-hours trading Tuesday after the company beat Q1 estimates but flagged pressure on profitability.
  • Q1 revenue rose 35% to $2.71 billion and adjusted EPS reached $0.87, while billings growth accelerated to 54%, pointing to strong demand.
  • Management guided Q2 revenue to about $2.8 billion and EPS to $0.88, yet projected a 46% to 47% adjusted operating margin that undercut recent levels.
  • The company set 2026 revenue growth at 27.7%, short of the roughly 28% to 30% many analysts expected, which helped drive the selloff.
  • Arista unveiled XPO liquid-cooled pluggable optics that can cut networking racks by up to 75% and a universal AI spine for large AI clusters, as analysts kept positive ratings but shifted focus to supply and margin execution.