ANET Q3 2026 Earnings Analysis
Arista achieved record Q3 revenue of $3.66B (+58.5%) and raised 2026 guidance to $13.3B; 2027 outlook of $18.5B (+38-40%) driven by AI and enterprise expansion.
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Key Takeaways
- Q3 revenue $3.66B: largest YoY growth ever at 58.5% driven by AI networking and enterprise adoption.
- 2027 guidance of $18.5B (38-40% growth) with AI fabrics doubling to $7B and campus growing 60% to $2B.
- 49.1% operating margin; 100+ Etherlink customers growing to 10+ gigawatts AI deployment by end 2027.
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// Full episode scriptWelcome to Beta Finch, your AI-powered earnings breakdown where we turn dense earnings calls into conversations you'd actually want to have with a friend. I'm Alex.
And I'm Jordan. And Alex, we've got a juicy one today.
We really do. Before we dive in, quick reminder: this podcast is AI-generated content for educational and entertainment purposes only. Nothing we discuss should be considered investment advice. Always do your own research and consult a qualified financial advisor before making any investment decisions.
Okay, with that out of the way — Arista Networks, ticker ANET, just dropped a Q3 2026 report that's honestly kind of stunning.
Stunning is the right word. Let's start with the headline number: $3.66 billion in quarterly revenue, up 58.5% year-over-year. That's not just a good quarter — Jayshree Ullal, the CEO, called it the highest year-over-year growth rate in Arista's history as a public company.
And remember, this is a company that's been public for over a decade. To put up your *best-ever* growth number at this scale is wild. For context, they beat their own guidance of $3.3 billion pretty handily.
Right, and it wasn't just revenue. Operating margin came in above 49%. Net income was $1.53 billion, about 42% of revenue. EPS was $1.20, up almost 56% from $0.77 a year ago.
Those are software-company-level margins on what is fundamentally a networking hardware business. That's the Arista story in a nutshell — they've built this single operating system, EOS, that runs across everything from campus switches to AI data center fabrics, and it lets them scale efficiently.
So let's talk about why this is happening — because it's really an AI infrastructure story now. Arista said they've surpassed 100 "Etherlink" customers — these are the companies buying their AI networking gear. And get this: by the end of 2027, they're forecasting more than 10 gigawatts of AI deployment across 10 or more different types of compute accelerators.
That accelerator diversity piece is key. Three years ago, when they started talking about this, it was four or five AI customers running 50,000 to 100,000 Nvidia GPUs, and a lot of that traffic was on proprietary networks like InfiniBand. Now the whole industry is shifting — compute is diversifying beyond just Nvidia, and Ethernet is winning as the open standard connecting it all.
Which is Arista's whole bet, right? They're positioning themselves as this neutral, open-standards layer that can plug into whatever accelerator a hyperscaler wants to use — AMD's Helios, Microsoft's Maia, Qualcomm, Meta's MTIA.
Exactly. And they broke down the AI fabric into three buckets: scale-up, scale-out, and scale-across. Scale-up — connecting chips within a rack — is still in early trials, production isn't expected until 2028. But scale-out and scale-across, connecting racks and entire data centers, that's where the money is right now, roughly a 70-30 split this year, and they expect scale-across to keep growing as a share.
Now let's get to the number everyone's buzzing about — the 2027 guide. Arista raised 2026 guidance for the fourth time this year, now sitting at $13.3 billion, 48% annual growth. But then they went a step further and gave their first-ever look at 2027.
And it's big — $18.5 billion at the midpoint, representing 38 to 40% growth. Within that, AI fabrics are expected to roughly double to about $7 billion, and their campus networking business — which people sometimes forget about — is guided to grow 60% to around $2 billion.
It's wild that campus, the "boring" enterprise business, is growing 60%. Todd Nightingale, the COO, explained that as this security-driven refresh cycle — enterprises are treating their networks as mission-critical now because of rising AI-powered cyberattacks, and Arista's low vulnerability count is becoming a real selling point.
Speaking of security, there was a great segment from Ken Duda, the CTO and founder. He talked about AVA — their Autonomous Virtual Assistant — and how they're partnering with Anthropic, Google, and OpenAI on something called Project Glasswing to build AI-driven vulnerability detection right into their security pipeline. Arista's keeping CVE counts under 100 over two decades, versus competitors where vulnerabilities are exploding.
That's a nice moat. Now, a couple of things analysts pushed on in the Q&A that are worth flagging for listeners. One was gross margin — it came in at 64% this quarter, guided to 62-64% going forward, slightly tighter than their historical 60-65% range, but management insists there's no erosion story here despite all this new, expensive rack-scale hardware coming online.
The other one was supply chain. Purchase commitments jumped to $11.4 billion from $9.7 billion last quarter — that's a big number — and inventory built up to $3.2 billion. CFO Chantelle Breithaupt was pretty direct that this is intentional, they're investing ahead of demand, locking in chips, memory, even PCB capacity, to make sure they can actually deliver on that 2027 number.
There was also a fun moment where an analyst, Tal Liani, admitted he'd missed the previous call and got gently teased by Jayshree for it — she joked she doesn't get this level of scrutiny from anyone else. But the real substance there was about deferred revenue, which actually ticked down slightly quarter-over-quarter. Management's message: don't over-read any single quarter's deferred balance, zoom out and look at the overall demand trend, which they described as the strongest in Jayshree's 18 years at the company.
So what does this mean going forward? You've got a company compounding revenue near 50-60%, maintaining elite margins, sitting on $14.4 billion in cash with zero debt, and now guiding to nearly $18.5 billion in revenue for next year — all while the AI accelerator market is still fragmenting in ways that actually play to Arista's strength as the neutral networking layer.
The risks are real too, though — heavy customer concentration with a couple of 10%-plus hyperscaler customers, a still-unproven scale-up product line competing against proprietary tech like NVLink, and a supply chain that has to execute flawlessly on billions in purchase commitments.
Before we wrap, I do want to say — everything discussed is AI-generated analysis for educational purposes. Past performance doesn't guarantee future results. Please do your own due diligence.
Well said. Bottom line: Arista just posted a record quarter and backed it up with one of the boldest forward guides we've seen from a networking company, betting big on an AI infrastructure buildout that's still in its early innings.
Lots to watch heading into Q4 and into next year's scale-up trials. We'll be back to break down the next print.
Thanks for listening to Beta Finch — see you next time.