• If you are wondering whether Arista Networks at US$136.34 is still attractive or starting to look expensive, you are not alone.
• The stock has posted returns of 5.0% over the last 7 days, 3.4% over 30 days and 2.1% year to date, while the 1 year return sits at 35.9% and the 3 year return is very large.
• Recent attention on Arista Networks has centered on its role in networking for cloud data centers and high performance infrastructure. This continues to draw interest from investors tracking large technology and cloud spending trends. This broader backdrop helps frame the strong multi year share price performance, including a 5 year return that is also very large.
• Our valuation model currently gives Arista Networks a valuation score of 1 out of 6. Next we will look at what different valuation approaches say about the stock today and then finish with a more complete way to think about value that goes beyond the usual multiples.

Arista Networks scores just 1/6 on our valuation checks. See what other red flags we found in the full valuation breakdown.

Approach 1: Arista Networks Discounted Cash Flow (DCF) Analysis

A Discounted Cash Flow, or DCF, model estimates what a company might be worth by projecting its future cash flows and then discounting those back to today using a required rate of return. It is essentially asking how much those future dollars are worth in today’s terms.

For Arista Networks, the model used is a 2 Stage Free Cash Flow to Equity approach, based on cash flow projections. The latest twelve month Free Cash Flow is about $4.08b. Analyst and extrapolated estimates in this model use Free Cash Flow projections that reach about $6.88b by 2029, with a series of yearly projections between 2026 and 2035 used to build the forecast beyond the initial analyst horizon.

When those projected cash flows are discounted back to today, this DCF model arrives at an estimated intrinsic value of about $109.79 per share. Compared with the current share price of $136.34 in this analysis, this implies the stock is around 24.2% above that model’s estimated value.

Result: OVERVALUED (based on this DCF model)

Our Discounted Cash Flow (DCF) analysis suggests Arista Networks may be overvalued by 24.2%. Discover 867 undervalued stocks or create your own screener to find better value opportunities.

Approach 2: Arista Networks Price vs Earnings

For profitable companies like Arista Networks, the P/E ratio is a common way to think about what you are paying for each dollar of current earnings. A higher or lower P/E often reflects what the market is pricing in around future growth and risk, with faster expected earnings growth or lower perceived risk typically supporting a higher “normal” P/E.

Arista Networks currently trades on a P/E of 51.2x. That sits above the Communications industry average of about 31.6x and also above the peer average of about 30.9x, so on simple comparisons the shares look more expensive than many similar companies.

Simply Wall St’s Fair Ratio for Arista Networks is 38.9x. This proprietary measure estimates what a reasonable P/E might be after adjusting for factors such as the company’s earnings growth profile, profit margins, industry, market cap and specific risks. Because it integrates these company specific drivers, the Fair Ratio can be more informative than a straight comparison with peers or the broad industry.

Comparing the Fair Ratio of 38.9x with the current P/E of 51.2x suggests Arista Networks is trading above that model’s fair range.

Result: OVERVALUED

P/E ratios tell one story, but what if the real opportunity lies elsewhere? Discover 1425 companies where insiders are betting big on explosive growth.

Upgrade Your Decision Making: Choose your Arista Networks Narrative

Earlier we mentioned that there is an even better way to understand valuation, so let us introduce you to Narratives, a simple way for you to attach a clear story to your assumptions about Arista Networks and see how that story translates into future revenue, earnings, margins and a fair value per share.

A Narrative connects three pieces: what you believe about the business, the financial forecast that follows from those beliefs, and the fair value that falls out of that forecast, so you are not just looking at a P/E or DCF number in isolation.

On Simply Wall St, Narratives are available on the Community page, where millions of investors share their view of companies in an accessible format that lets you compare your Fair Value with the current price to help you decide whether the gap between the two is large enough for you to consider buying or selling.

Because Narratives are linked to live data, they update when new information such as earnings releases or news is added to the platform. For Arista Networks, you might see one Narrative that assumes a high fair value based on cloud networking demand and another that sets a much lower fair value because it assumes tougher competition and more conservative margins.

Do you think there's more to the story for Arista Networks? Head over to our Community to see what others are saying!

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.