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Arista Networks, Inc.: Q3 FY2026 earnings call

What management said about Q3 FY2026, from the documents filed with the SEC on 3 November 2026: press release. Guidance figures: 3 new. The quarter’s numbers.

Key takeaways

  • Revenue grew 58.5% year over year: Revenue was $3.66 billion, up 20.5% from the second quarter of 2026. Source
  • Revenue topped the $3.3 billion guidance: Management said revenue exceeded the $3.3 billion guidance and was the highest year-over-year growth since the IPO. Source
  • Diluted EPS of $1.22 GAAP, $1.20 non-GAAP: Diluted EPS was $1.22 on a GAAP basis and $1.20 non-GAAP, against $0.67 and $0.77 in the third quarter of 2025. Source
  • Q4 revenue guided to $3.9-4.0 billion: Fourth-quarter revenue is expected at $3.9 to $4.0 billion. Source
  • Gross margin lower than a year earlier: GAAP gross margin was 63.6% against 64.6%; non-GAAP gross margin was 64.0% against 65.2% a year earlier. Source
  • Operating margin higher on both bases: GAAP operating margin was 44.9% against 42.4%; non-GAAP operating margin was 49.1% against 48.6%. Source
  • Rack-scale AI architectures launched with partners: Arista launched open rack-scale architectures for scale-up and scale-out AI networks with seven named partners. Source

“Arista registered another momentous quarter with the highest year-over-year revenue growth since our IPO and record profitability, surpassing even my high expectations,”

Jayshree Ullal, Chairperson and CEO of Arista Networks

Guidance

AreaPeriodFigureAgainst last quarter
Revenue SourceFourth quarter of 2026$3.9 - $4.0 billionNew
Non-GAAP operating margin SourceFourth quarter of 202648 - 49%New
Non-GAAP diluted net income per share SourceFourth quarter of 2026$1.26 - $1.30New

What changed from last quarter

  • New guidance: Fourth-quarter 2026 expectations were added; the earlier release gave guidance only for the third quarter. Source
  • New: Rack-scale architectures launched with named partners for AI scale-up and scale-out networks. Source
  • New: Liquid-cooled Etherlink SU-144 portfolio introduced for scale-up AI networks. Source

Results and profitability

  • Revenue grew 58.5% year over year: Revenue was $3.66 billion, up 20.5% from the second quarter of 2026. Source
  • Revenue topped the $3.3 billion guidance: Management said revenue exceeded the $3.3 billion guidance and was the highest year-over-year growth since the IPO. Source
  • Diluted EPS of $1.22 GAAP, $1.20 non-GAAP: Diluted EPS was $1.22 on a GAAP basis and $1.20 non-GAAP, against $0.67 and $0.77 in the third quarter of 2025. Source
  • Net income reached $1.56 billion: Net income was $1,560.4 million against $853.0 million a year earlier; nine-month net income was $3,796.2 million. Source
  • Arista added to the S&P 100: The index addition took place in September 2026; the company was also recognized on the 2026 Fortune 500 list. Source

Fourth-quarter guidance

  • Q4 revenue guided to $3.9-4.0 billion: Fourth-quarter revenue is expected at $3.9 to $4.0 billion. Source
  • Q4 non-GAAP operating margin of 48-49%: Non-GAAP operating margin is expected at 48 to 49 percent for the fourth quarter. Source
  • Q4 non-GAAP EPS of $1.26-1.30: Non-GAAP diluted EPS is expected at $1.26 to $1.30; the company said a GAAP reconciliation is not available on a forward basis. Source

“This quarter brought a true trifecta for our company, setting new record highs in revenue growth, net income, and EPS.”

Chantelle Breithaupt, CFO

Margins and operating costs

  • Gross margin lower than a year earlier: GAAP gross margin was 63.6% against 64.6%; non-GAAP gross margin was 64.0% against 65.2% a year earlier. Source
  • Operating margin higher on both bases: GAAP operating margin was 44.9% against 42.4%; non-GAAP operating margin was 49.1% against 48.6%. Source
  • Research and development expense rose: R&D expense was $486.9 million against $326.0 million a year earlier; sales and marketing was $156.6 million. Source
  • Stock-based compensation rose to $138.1 million: Stock-based compensation was $138.1 million against $127.9 million; R&D accounted for $78.4 million of it. Source
  • Income tax provision increased: The income tax provision was $355.1 million against $224.1 million a year earlier. Source
  • Other income rose to $273.1 million: Other income, net was $273.1 million against $98.9 million a year earlier. Source

Products and platforms

  • Product revenue rose to $3.19 billion: Product revenue was $3,190.0 million against $1,911.7 million; service revenue was $467.6 million against $396.6 million. Source
  • Rack-scale AI architectures launched with partners: Arista launched open rack-scale architectures for scale-up and scale-out AI networks with seven named partners. Source
  • Etherlink SU-144 supports 144 accelerators per rack: The portfolio supports up to 144 accelerators per rack in a single hop and scales to 1,024 XPUs via cross-rack topologies. Source
  • Scale-across design reaches one million XPUs: The company described scale-across networking for distributed AI fabrics across data centers, up to one million XPUs. Source
  • AI security tools built with model makers: Arista embedded domain-specific AI harnesses in its development lifecycle to speed proactive vulnerability discovery. Source

“This strong momentum across customer sectors highlights our increased relevance for the generative and agentic AI era.”

Jayshree Ullal, Chairperson and CEO of Arista Networks

Demand and balance sheet

  • Momentum reported across customer sectors: Management tied customer-sector momentum to the company's relevance for generative and agentic AI. Source
  • Deferred revenue above year-end levels: Current deferred revenue was $5,102.2 million and non-current $1,737.3 million at September 30, 2026, against $4,002.6 million and $1,369.8 million at year-end. Source
  • Inventories higher than at year-end: Inventories were $3,209.8 million at September 30, 2026, against $2,247.1 million at December 31, 2025. Source

Cash and capital returns

  • Nine-month operating cash flow higher: Net cash from operations for the nine months was $3,977.4 million, against $3,110.0 million a year earlier. Source
  • No share repurchases in nine months: The company made no repurchases of common stock in the first nine months of 2026, against $983.0 million a year earlier. Source
  • Cash and marketable securities increased: Cash and cash equivalents were $2,288.1 million and marketable securities $12,070.9 million, against $1,963.9 million and $8,779.1 million at year-end. Source
  • Stockholders' equity rose on earnings: Total stockholders' equity was $16,446.7 million against $12,370.5 million at year-end, with retained earnings of $13,243.2 million. Source

Coming up, as management said on 3 November 2026

  • Fourth-quarter expectations set: Management set fourth-quarter 2026 expectations for revenue, non-GAAP operating margin and non-GAAP diluted EPS. Source

Earlier plans management reported on

  • Ahead: Management said third-quarter revenue exceeded the $3.3 billion guidance. Source

Other quarters

Summarised with AI from the documents the company filed with the SEC. Every point is checked against the filing before it is shown: management’s own words word for word, figures against the line or table row they come from. A point that fails the check is left out. Source opens the filing at that line.