Arista Networks Inc. (ANET) Q3 2026 (USD): Adj. EPS 1.20 (exp. 1.08), Revenue 3.66bln (exp. 3.33bln)

• Adj. EPS 1.26-1.30 (exp. 1.15).
• Revenue 3.9-4bln (exp. 3.6bln).
• Adj. operating margin 48-49%.

A top-and-bottom-line beat with guidance above consensus on both revenue and EPS is the cleanest earnings configuration a high-multiple networking name can print; in comparable episodes the first move is driven by the guide, not the quarter, and the direction set in after-hours has tended to hold when the forward numbers are the surprise. The margin line is the one to weigh: an adjusted operating margin guided in the high-40s keeps Arista at the top of the communications equipment peer set on profitability, and prior cycles in this group have shown that beats accompanied by stable or expanding margins re-rate more durably than those bought with opex or pricing concessions. Arista has an established record of beating and raising, so the bar for genuine surprise is higher than for the average hardware name, and the tell on the call is the mix: whether strength is coming from the large cloud and AI back-end buildouts, which the market treats as durable, or from broader enterprise campus demand, which carries less multiple. Read-throughs to the AI infrastructure complex and networking peers are the established pattern on prints of this kind, with the reaction in the supplier and customer ecosystem often as informative as the stock itself. Worth noting that with consensus already chasing estimates upward, the gap between the whisper and the printed consensus is what conditions the size of any after-hours move.