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    Fortinet (FTNT) Rallies On Rich Valuation Debate, Is The Stock Too Expensive?

    Simply Wall St·09/06/2026 16:22:35
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    Fortinet (FTNT) continues to draw attention from investors, with the stock recently closing at US$156.29. This move comes as the cybersecurity company reports annual revenue of US$7.53b and net income of US$2.12b.

    Over the past year, Fortinet’s share price return has climbed 100.68% year to date, even as the stock has recently eased back with a 7 day share price decline of 5.85% and a 30 day share price decline of 2.10%. This follows a 90 day share price return of 9.26% and longer term total shareholder returns of 98.26% over one year and 151.68% over five years. This performance indicates strong long term momentum even as short term sentiment cools.

    Scan how Fortinet compares with other cybersecurity and infrastructure focused stocks that have also shown strong recent momentum using our hand picked 55 AI infrastructure stocks.

    Bulls point to Fortinet’s scale, profitability and long run share price strength, while bears highlight the recent pullback and potential overoptimism. Which side does the current valuation evidence support next?

    Most Popular Narrative: 24.5% Overvalued

    According to the most followed Fortinet narrative from user rdiab, the fair value estimate of $125.56 sits well below the recent $156.29 share price. That gap is what drives the current overvaluation call and frames the debate around how much future growth is already priced in.

    Fortinet’s current valuation undoubtedly prices in a lot of future perfection, making it an expensive stock by traditional metrics. As of mid-July 2026, the stock trades at a Price-to-Earnings (P/E) ratio roughly 60x, which is a massive premium compared to the broader market and well above its recent 2024 and 2025 levels. Its Price-to-Sales (P/S) ratio tells a similar story, sitting at a lofty 16x to 18x, meaning investors are paying a steep multiple for every dollar of revenue the company brings in. While this premium reflects their explosive growth in AI infrastructure security, a P/E over 60 leaves almost zero room for error if macroeconomic conditions or spending on data centers slow down.

    Read the complete narrative. Read the complete narrative.

    Want to see what sits behind that $125.56 fair value for Fortinet? The narrative leans heavily on revenue growth, margin strength and a slimmer future earnings multiple. The mix of expansion assumptions and a reset in valuation is what really shapes this story.

    Result: Fair Value of $125.56 (OVERVALUED)

    Have a read of the narrative in full and understand what's behind the forecasts.

    However, Fortinet’s rich P/E and P/S multiples could be pressured if AI related security demand cools, or if revenue and margin trends fall short of expectations.

    Find out about the key risks to this Fortinet narrative.

    Next Steps

    With Fortinet, the debate between rich valuation and potential rewards is clear, so it may be useful to review the numbers yourself and weigh both sides. Then see how investors are framing those bright spots in the 2 key rewards.

    Looking for more Fortinet sized investment ideas?

    If you stop with Fortinet, you risk missing other stocks that better match your goals. Use the Simply Wall St Screener to surface fresh opportunities fast.

    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.