ANET Research Update — September 12, 2026 (Updated)
Updated Thesis
Arista Networks designs and sells high-performance Ethernet switching and routing hardware plus its extensible EOS network operating system, and it sits directly in the path of the AI data-center build-out where networking, not compute, is increasingly the bottleneck. The business quality is genuinely high: TTM gross margin of 63.0%, TTM operating margin of 43.1%, TTM net margin of 38.4%, and ROE of 30.8%, with revenue up 37.7% and earnings up 36.5% in the most recent quarter. The problem is price.
The investment grade as of this refresh is C — average business quality. A-tier business, C-tier valuation with only 15.4% upside to $234.80 fair value.
Key Metrics at a Glance
- Revenue growth: +37.7% year over year
- Net margin: 38.4%
- Fair value upside: +15.4% to our estimate of $235
Current price: $203.47
These figures reflect our most recent data pull and are one input into a multi-factor valuation framework.
Our 12–18 Month Outlook
Quality companies held over a multi-year horizon benefit from compounding fundamentals and the patience to ride through short-term volatility. Arista Networks, Inc. remains in our covered universe with a average-quality assessment. We update research when material data changes — earnings revisions, management shifts, or regime changes in valuation — not on every price fluctuation.
Long-term accumulation of quality businesses at fair or better prices is the core of the Patient Accumulator approach. Research updates like this one inform whether to add, hold, or wait for a better zone — not whether to react to short-term price moves.
[View full ANET research →](/stocks/ANET)