Arista Networks (ANET) has opened 2026 with Q1 revenue of US$2.7 billion and basic EPS of US$0.81, setting the tone for how the rest of the year may unfold. Over recent quarters the company has seen revenue move from US$2.0 billion in Q1 2025 to US$2.7 billion in Q1 2026, while basic EPS has shifted from US$0.65 to US$0.81 across the same period, giving you a clear view of how the top and bottom line are tracking ahead of this latest report. With trailing net profit margins still near the high 30% range and only modestly below last year, the focus now is on how that level of profitability shapes expectations for what comes next.

See our full analysis for Arista Networks.

With the headline numbers in place, the next step is to see how these results line up against the widely followed growth and profitability stories investors have been using to frame Arista Networks, and where those narratives might need to be updated.

TTM earnings reach US$3.7b with 38.3% margin

• Over the trailing twelve months, Arista generated US$9.7b of revenue and US$3.7b of net income, implying a 38.3% net margin versus 40.7% a year earlier.
• Supporters of the bullish view point to this combination of strong earnings and high margins as evidence the business can handle industry shifts. However, the move from 40.7% to 38.3% margin shows some pressure on profitability that contrasts with the idea of uninterrupted margin expansion.
  • Earnings grew 22.9% over the last year, which lines up with bullish claims that AI and cloud demand are feeding into higher profits, even as margin percentage has eased.
  • Forecasts of about 16.5% yearly earnings growth and 17.4% yearly revenue growth still assume solid expansion, so the slight margin compression is an area bulls need to keep testing against those expectations.

Over the past year, bulls have argued that AI and cloud networking can keep margins high and growth healthy, and these numbers show both the strength and the early signs of pressure that matter most for that story. 🐂 Arista Networks Bull Case

Premium 49.8x P/E prices in mid teens growth

• The stock trades on a trailing P/E of about 49.8x versus roughly 37.8x for the wider US Communications industry and 40.8x for peers, while analysts see around 16.5% yearly earnings growth and 17.4% yearly revenue growth.
• Bears highlight this valuation gap as a key risk, arguing that paying a premium multiple on US$3.7b of trailing earnings leaves little room for disappointment if growth or margins soften from current levels.
  • The stock sits only about 0.6% below the DCF fair value estimate of US$147.93, and analysts’ average price target of US$187.38 implies upside from the current US$147.06 share price, so the market is already baking in solid execution.
  • With margins at 38.3% versus 40.7% a year ago, any further margin pressure would directly challenge the idea that a near 50x P/E is comfortably supported by earnings quality alone.

Skeptics see a stock on a rich multiple where even small shifts in growth or margins, not just big surprises, can matter for returns. 🐻 Arista Networks Bear Case

Quarterly EPS trend supports but moderates growth story

• Basic EPS has moved from US$0.65 in Q1 2025 to US$0.81 in Q1 2026, while trailing twelve month EPS stands at about US$2.96, up from US$2.41 a year earlier.
• Analysts’ consensus narrative that Arista can grow but with some margin give up is broadly in line with these numbers. However, the step down in net margin from 40.7% to 38.3% shows that growth is not translating into ever higher profitability.
  • Revenue over the same trailing period rose from US$7.0b to US$9.7b and net income from US$2.9b to US$3.7b, which supports the idea of a larger business that is still very profitable even as percentage margins slip.
  • With current EPS of US$2.96 on a trailing basis and a P/E around 49.8x, the consensus expectation of mid teens growth already sits in the price, so future reports will likely be judged on how closely they track those trends.

Next Steps

To see how these results tie into long-term growth, risks, and valuation, check out the full range of community narratives for Arista Networks on Simply Wall St. Add the company to your watchlist or portfolio so you'll be alerted when the story evolves.

Seen enough to get a feel for the mixed sentiment here, with strong profitability but also clear valuation and margin questions? Act now by reviewing the full picture of potential upsides and concerns in the 4 key rewards and 1 important warning sign.

See What Else Is Out There

The mix of a near 50x P/E, easing net margin from 40.7% to 38.3% and modestly pressured profitability leaves little room for earnings disappointment.

If that tight margin for error worries you, you may wish to balance your portfolio by checking out companies in the 74 resilient stocks with low risk scores that aim to temper valuation and earnings risk.

This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.