LongANETJune 30, 2026

Sustainable Growth Advisers, LP on Arista Networks

Thesis

SGA initiated Arista as a high-performance networking leader whose EOS software architecture, reliability and product performance have created a strong position with hyperscalers and cloud providers. Although most revenue is hardware, the business has repeatability from data-center expansion, network refresh cycles and the operational switching costs created once Arista is standardized inside a customer's infrastructure. SGA expects the migration from 100G to 400G and 800G networking plus the buildout of AI and cloud workloads to sustain long-term demand. Strong margins and pricing power reinforce the view that Arista can compound through future network expansion cycles.

We view Arista as a high-quality, long-term compounder
Sustainable Growth Advisers, LP — Global Growth Commentary Quarter 2 2026

Key risks

  • Competition from Cisco and potential new entrants.
  • Customer concentration among large hyperscalers.
  • Variability in deferred revenue and supply-chain dependencies.

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