Arista Networks Posts Its Fastest Growth Since The IPO And Sets A ~$18.5B 2027 Target, But Stalled Deferred Revenue And A Bruised Stock Complicate The Setup

Arista Networks delivered the cleanest acceleration story in large-cap networking this quarter. Non-GAAP earnings of $1.20 per share beat the $1.08 consensus by 4.3% and cleared the $1.15 Earnings Whisper number. Revenue of $3.658 billion topped the $3.31 billion consensus by 10.5% and the company's own $3.3 billion guide.

Growth is the headline. Revenue rose 58.5% year over year, the fastest since Arista went public. That extends a steady climb from 28.9% in Q4 FY25 to 35.1%, then 37.7%, and now 58.5%. Earnings grew 64.4% on Earnings Whispers' basis. Arista's own release shows a smaller gain against a recast $0.77 prior-year figure, because the company changed its non-GAAP tax methodology.

Management then went further than usual. It raised FY26 guidance for the fourth straight time, to roughly $13.3 billion (+48%), and issued a first FY27 outlook of about $18.5 billion, or 38-40% growth. That is well beyond Arista's customary two-quarter visibility.

The quality of the beat holds up, but the revenue upside converted less efficiently than the top line suggests. The revenue surprise was more than twice the EPS surprise, and the gap shows up in costs:

• Non-GAAP R&D jumped to $408.5 million (11.2% of revenue) from $278.1 million in Q2, driven by prototype and liquid-cooling spend.
• Non-GAAP operating margin slipped to 49.1% from 49.9% sequentially, though it was still up from 48.6% a year ago.
• Gross margin of 64.0% beat the roughly 63% guide and Q2's 63.4%, but trailed last year's 65.2% because of component cost inflation.
• GAAP EPS of $1.22 exceeded the non-GAAP figure only because of a $134.5 million gain on strategic investments, so the GAAP number flatters core performance.

The call explains why management is so confident. AI fabric revenue is targeted to roughly double, from about $3.5 billion in FY26 to about $7 billion in FY27, and campus is expected to grow about 60% to $2 billion. Arista now expects three, possibly four, customers above 10% of revenue in 2026, which would spread its customer concentration more broadly. Management also lifted its 2030 addressable market to more than $200 billion and forecasts more than 10 GW of deployments across 10+ accelerator types by end-2027.

The Ethernet scale-up rack designs built with Microsoft Maia, AMD Helios, Meta MTIA, Qualcomm and Arm add a longer-dated catalyst. Trials are slated for 2027 and production for 2028. Tone also shifted from earlier supply-constrained caution to confidence, backed by a multi-year memory supply agreement. Purchase commitments climbed from $6.8 billion at the end of FY25 to $11.4 billion.

Bears still have legitimate ammunition, and it sits in the leading indicators:

• **Deferred revenue stalled.** It slipped to about $6.8 billion from $6.9 billion after building steadily from $5.4 billion. Product deferred revenue fell $86 million, versus gains of $600 million or more in each of the prior two quarters.
• **Working capital is heavier.** Inventory rose to $3.2 billion from $2.5 billion, and the $11.4 billion in commitments raises execution and working-capital risk if demand timing slips.
• **Cash flow cooled.** Operating cash flow of $1.2 billion trailed Q1's record $1.69 billion.
• **The core is set to slow.** The FY27 guide implies moderation in the non-AI front-end data-center business, which management framed as a back-end/front-end cycle.
• **Mix and supply risks remain.** International mix fell to 18.6% from 23%, and industry-wide supply constraints persist, with not all 2027 orders yet placed.

The market setup is more complicated than the surprise implies. Shares reached a 52-week high of $217.41 on October 9, then slid about 24.5% to $164.14 on the eve of the report. That price is down 21.9% from the open after the August report, sits just 0.5% above the inter-earnings low, and is fractionally below the 200-day moving average at $165.16. Investor sentiment remained positive but weakened meaningfully, falling from 0.21 to 0.04, so expectations came into the print noticeably more subdued than in August. Earnings Whispers' sequential-growth and momentum trends are positive, while the AVWAP trend is negative, reflecting how much recent buyers are underwater.

That divergence is the central tension. The fundamentals have arguably never been stronger: growth is accelerating, FY26 guidance has been raised four times, the Q4 guide of $3.9-4.0 billion with $1.26-1.30 in EPS implies further sequential growth, and FY27 has been mapped out in unusual detail. Yet the stock has been treated as if the cycle is peaking. The softer deferred revenue, swelling inventory and heavier R&D give that worry some basis.

The bottom line is that Arista turned in a record quarter and laid out a credible, aggressive path to roughly $18.5 billion in 2027 revenue, anchored by a doubling of AI networking. The beat was real, but cost growth and gross-margin pressure muted its leverage. Stalling deferred revenue and the inventory build are the metrics to watch for evidence that the 2027 outlook is fully backed by orders. With shares sitting near their quarterly low after a sharp retreat, the report gives investors fundamental reassurance that the price action had not been reflecting.

Read our earnings preview for Arista Networks, Inc.: https://www.earningswhispers.com/article/ANET/21548

This earnings review was originally published on Earnings Whispers.

This article is for informational purposes only and is not investment advice. Earnings Whispers and its staff may hold positions in the securities mentioned. It is AI-assisted, based on proprietary Earnings Whispers data and company reports, and edited by Earnings Whispers staff.