Arista Networks' third-quarter revenue jumps 58.5% to $3.66 billion

Arista Networks (ANET), which makes data center network switches, reported third-quarter revenue of $3.66 billion, above its own $3.3 billion guidance, and expects $3.9 billion to $4.0 billion in the fourth quarter.

By Funded Tech staff · Nov 4, 2026, 7:04 AM ET · News · 1 min read · 2 sources linked

A rack-mounted Arista network switch with rows of cabled ports, in use at The Gathering 2025 — Photo (2025): Premeditated via Wikimedia Commons, CC BY-SA 4.0. Cropped.

Why it matters: Arista says the quarter was its fastest year-over-year growth since going public, a sign of how spending on networks for large AI clusters is reaching suppliers beyond chipmakers.

Arista Networks, which makes the high-speed switches that connect servers in data centers and AI clusters, reported third-quarter revenue of about $3.66 billion on Tuesday. That is up 58.5% from a year earlier and 20.5% from the second quarter, and above the company's own guidance of $3.3 billion. Arista calls it its highest year-over-year revenue growth since going public.

Profit: Diluted earnings were $1.22 per share under standard accounting rules and $1.20 on a non-GAAP basis, compared with $0.67 and $0.77 a year earlier. Operating margin was 44.9%, or 49.1% on a non-GAAP basis, compared with 42.4% and 48.6% in the third quarter of 2025.

AI networking: During the quarter, Arista announced liquid-cooled Ethernet rack-scale designs for AI systems, including an architecture it calls Etherlink SU-144 that supports up to 144 accelerators per rack. Arista says it built them in partnership with AMD, Arm, Broadcom, d-Matrix, Meta, Microsoft and Qualcomm.

The company's outlook: For the fourth quarter, Arista expects revenue of $3.9 billion to $4.0 billion, a non-GAAP operating margin of 48% to 49% and non-GAAP diluted earnings of $1.26 to $1.30 per share. These are the company's own projections.

This story is for information only and is not investment advice.

Sources

How we checked this: We read Arista Networks' third-quarter release on arista.com and as filed with the SEC (Form 8-K, Exhibit 99.1, Nov 3, 2026) in copies saved on Nov 4, 2026 at about 7:15 AM ET, and checked every figure and company statement against it.

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This article is for information only and is not investment advice. Funded Weekly does not recommend buying or selling any security. Do your own research or consult a licensed adviser.

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