Arista Networks, Inc. (ANET) · Nov 3, 2026 · Earnings

Arista earnings beat as AI networking revenue surges 58%

Beat — Non-GAAP EPS $1.20 vs ~$1.08 consensus; revenue $3.66B vs ~$3.33B

Arista’s Q3 earnings beat consensus sharply, with revenue up 58% as its AI networking push drives record profitability despite softer gross margins.

Arista is expanding its data-center switching franchise into AI scale-out, scale-up, and distributed “scale-across” Ethernet fabrics, targeting the shift toward open networking for very large accelerator clusters. Its own strategy describes scale-up Ethernet as an incremental opportunity and scale-out Ethernet as a way to challenge proprietary alternatives across clusters reaching hundreds of thousands or more accelerators.

The quarter materially exceeded a high bar. Revenue reached $3.66 billion, about 58% above the year-ago period and roughly 10% above the published consensus near $3.33 billion; non-GAAP diluted EPS was $1.20 versus approximately $1.08 expected. That is a genuine operating beat, not merely a favorable comparison with a weak prior year.

Q3 2026Q3 2025Consensus
Revenue (Income Statement)$3,657.6M (+58.5%)$2,308.3M~$3,334M
Non-GAAP diluted EPS (Non-GAAP reconciliation)$1.20 (+55.8%)$0.77~$1.08
GAAP diluted EPS (Income Statement)$1.22 (+82.1%)$0.67~$0.99
Non-GAAP operating margin (Non-GAAP reconciliation)49.1% (+0.5 pts)48.6%~49.0%
GAAP gross margin (Non-GAAP reconciliation)63.6% (-1.0 pts)64.6%~63.1%

The beat came with healthy core operating leverage. Non-GAAP operating margin edged up to 49.1% from 48.6% despite a large increase in research and development spending, while operating income rose to $1.80 billion from $1.12 billion. That supports the interpretation that AI-related demand is translating into profitable scale rather than only top-line volume.

The main blemish is margin mix, not demand. Gross margin declined to 63.6% GAAP and 64.0% non-GAAP from 64.6% and 65.2%, respectively. The filing therefore shows unusually strong growth while leaving open whether the current AI-heavy mix can sustain prior margin levels; the operating-margin result is better than that gross-margin decline alone would suggest.

The balance sheet gives Arista room to keep building for the AI cycle. Cash and marketable securities totaled about $14.4 billion at September 30, while nine-month operating cash flow reached $4.0 billion. Inventory also rose materially to $3.21 billion from $2.25 billion at year-end, consistent with supporting a much larger demand and supply commitment, though it increases the amount of working capital tied to execution.

Bottom line: This was a clear business-level beat that strengthens Arista’s AI-networking growth story. The only meaningful counterweight is lower gross margin, but it did not prevent operating leverage or profitability from exceeding expectations.

What to watch next

Q4 2026 earnings report

Original filing on SEC EDGAR

Arista earnings beat as AI networking revenue surges 58% | ANET Stock News
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