Arista Networks, US0404132054

Arista Networks stock rides record quarter as AI outlook rises

Published on 11/12/2026 at 13:20 | Editorial responsibility: Rafael Müller, Editor-in-Chief AD HOC NEWS

Arista Networks stock enters the next phase of its AI expansion after record third-quarter growth. Management set a stronger fourth-quarter revenue range.

AI demand lifts Arista outlook

Arista reported its strongest year-over-year revenue growth since its initial public offering.
Management linked the momentum to AI, data center and enterprise networking demand.
The company launched new Ethernet architectures and expanded its strategy for distributed AI fabrics.
Arista joined the S&P 100 in September 2026.

Arista Networks, US0404132054, Illustration mit AI erstellt.

Arista Networks reported record third-quarter results on Tuesday, November 3, 2026, as demand for networking equipment from artificial intelligence and enterprise customers accelerated. In its official financial release, the company said revenue reached 3.66 billion US dollars for the quarter ended September 30.

Revenue increased 58.5 percent from the year-earlier quarter and 20.5 percent from the second quarter. Arista said the result exceeded its previous revenue guidance of 3.3 billion US dollars and represented its highest year-over-year growth since the company went public.

AI networking drives expansion

Chief Executive Jayshree Ullal said the momentum across customer groups underscored Arista's growing role in the generative and agentic AI era. Chief Financial Officer Chantelle Breithaupt described the quarter as a new high for revenue growth, net income and earnings per share.

GAAP operating margin was 44.9 percent, while the non-GAAP operating margin reached 49.1 percent. GAAP diluted earnings per share came to 1.22 US dollars, compared with non-GAAP diluted earnings per share of 1.20 US dollars. The company noted that its non-GAAP measures exclude items such as stock-based compensation, intangible-asset amortization and certain tax effects.

Arista also introduced open Ethernet rack-scale architectures for scale-up and scale-out AI fabrics with partners including AMD, Arm, Broadcom, d-Matrix, Meta, Microsoft and Qualcomm. Its liquid-cooled Etherlink SU-144 architecture is designed to connect as many as 144 accelerators in a single rack and scale to 1,024 XPUs through cross-rack topologies.

Higher targets raise execution bar

For the fourth quarter of 2026, Arista guided to revenue of 3.9 billion to 4.0 billion US dollars. The company expects a non-GAAP operating margin of 48 percent to 49 percent and non-GAAP diluted earnings per share of 1.26 US dollars to 1.30 US dollars.

The outlook keeps AI infrastructure demand at the center of the investment case, but it also raises the execution bar. Arista flagged supply-chain constraints, limited sources for some components, inventory management and dependence on merchant silicon suppliers among the risks that could affect future performance. Its forward guidance also excludes uncertain items, so GAAP results may differ materially from the non-GAAP range.

Arista Networks stock traded at 176.44 euros on Lang & Schwarz at 13:13 CET on Thursday, November 12, 2026.