How strong was Arista's Q1 2026 growth and profitability?

Revenue grew 35.1% year over year to $2.709 billion, and non-GAAP operating margin held at 47.8%, the same as a year earlier. GAAP operating margin was 42.7%, roughly flat. Growth therefore came without margin expansion, which is a key point for investors to weigh.

What does the Q2 2026 guidance imply?

Guidance calls for revenue of about $2.8 billion, which is modest sequential growth from $2.709 billion. The non-GAAP operating margin range of 46-47% is below Q1's 47.8%, suggesting some margin pressure in the near term. Non-GAAP diluted EPS of about $0.88 would be only slightly above Q1's $0.87.

Why did operating cash flow rise so sharply?

Operating cash flow was $1.69 billion versus $641.7 million a year earlier. The largest driver was a $826 million increase in deferred revenue, followed by a $353 million increase in income taxes payable, partly offset by higher other asset build-up and inventory growth. Much of the improvement reflects customer prepayments, which can reverse in later periods.

How is Arista managing its capital and shareholder returns?

Arista ended Q1 2026 with about $12.35 billion in cash and marketable securities, up from roughly $10.74 billion at year-end 2025. The company made no share repurchases in the quarter, compared with $787 million in Q1 2025. Investors may watch whether buybacks resume as cash continues to build.

What is the significance of the XPO announcement?

XPO is a high-density, liquid-cooled pluggable optics platform aimed at next-generation AI data centers. Arista claims it can reduce networking racks by up to 75% and floor space by up to 44% compared with traditional pluggable optics. The announcement supports Arista's AI networking positioning, though the press release does not quantify its revenue contribution or timing.

ANET 8-K: Earnings & Results

01—Abstract

Summary

Summary of the 8-K filed May 5, 2026. Cited figures are marked; the original filing is the authoritative source.

Arista Networks reported first quarter 2026 results on May 5, 2026, with revenue of $2.709 billion^a, up 35.1% year over year and up 8.9% sequentially from Q4 2025.

GAAP diluted EPS was $0.80^b and non-GAAP diluted EPS was $0.87, compared with $0.64 and $0.66 (recast) in Q1 2025. GAAP operating margin was 42.7% (versus 42.8% a year earlier) and non-GAAP operating margin was 47.8%, flat year over year despite strong top-line growth. Operating cash flow was $1.69 billion, more than double the $641.7 million generated in the prior-year quarter, driven largely by a $826 million increase in deferred revenue.

The company guided Q2 2026 revenue to approximately $2.8 billion^c, non-GAAP operating margin to 46-47%, and non-GAAP diluted EPS to approximately $0.88. The implied guidance points to continued sequential growth but a modest step-down in non-GAAP operating margin from Q1's 47.8%, which investors will want to understand in terms of component costs, product mix, and supply chain dynamics. Management cited a dynamic macro and supply chain environment.

Balance sheet strength improved meaningfully: cash and equivalents plus marketable securities rose to roughly $12.35 billion^d from about $10.74 billion at year-end 2025. Deferred revenue jumped to $6.20 billion in total (current plus non-current), and inventories rose to $2.38 billion.

The company repurchased no stock in Q1 2026, compared with $787 million in Q1 2025. The company also announced the XPO high-density liquid-cooled pluggable optics platform, positioned for next-generation AI data centers.

02—Key points

Key Highlights

Q1 2026 revenue of $2.709 billion, up 35.1% year over year and 8.9% sequentially.
GAAP diluted EPS of $0.80 and non-GAAP diluted EPS of $0.87, versus $0.64 and $0.66 (recast) a year earlier.
Non-GAAP operating margin of 47.8%, flat year over year; GAAP operating margin of 42.7% versus 42.8%.
Operating cash flow of $1.69 billion, up from $641.7 million, supported by a $826 million increase in deferred revenue.
Q2 2026 guidance: revenue of about $2.8 billion, non-GAAP operating margin of 46-47%, and non-GAAP diluted EPS of about $0.88.
Cash and marketable securities grew to about $12.35 billion; no share repurchases in Q1 2026 versus $787 million a year earlier.
Launched the XPO liquid-cooled pluggable optics platform, claiming up to 75% fewer racks and up to 44% less floor space versus traditional pluggable optics.

03—Questions

Frequently Asked Questions

How strong was Arista's Q1 2026 growth and profitability?
Revenue grew 35.1% year over year to $2.709 billion, and non-GAAP operating margin held at 47.8%, the same as a year earlier. GAAP operating margin was 42.7%, roughly flat. Growth therefore came without margin expansion, which is a key point for investors to weigh.
What does the Q2 2026 guidance imply?
Guidance calls for revenue of about $2.8 billion, which is modest sequential growth from $2.709 billion. The non-GAAP operating margin range of 46-47% is below Q1's 47.8%, suggesting some margin pressure in the near term. Non-GAAP diluted EPS of about $0.88 would be only slightly above Q1's $0.87.
Why did operating cash flow rise so sharply?
Operating cash flow was $1.69 billion versus $641.7 million a year earlier. The largest driver was a $826 million increase in deferred revenue, followed by a $353 million increase in income taxes payable, partly offset by higher other asset build-up and inventory growth. Much of the improvement reflects customer prepayments, which can reverse in later periods.
How is Arista managing its capital and shareholder returns?
Arista ended Q1 2026 with about $12.35 billion in cash and marketable securities, up from roughly $10.74 billion at year-end 2025. The company made no share repurchases in the quarter, compared with $787 million in Q1 2025. Investors may watch whether buybacks resume as cash continues to build.
What is the significance of the XPO announcement?
XPO is a high-density, liquid-cooled pluggable optics platform aimed at next-generation AI data centers. Arista claims it can reduce networking racks by up to 75% and floor space by up to 44% compared with traditional pluggable optics. The announcement supports Arista's AI networking positioning, though the press release does not quantify its revenue contribution or timing.

04—Continue

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