Fortinet (STU:FO8) Margin of Safety % (DCF FCF Based): -51.37% (As of Jun. 26, 2026)


STU:FO8 Fortinet Inc STU:FO8
93 GF Score
Price €131.74
GF Value €87.05
Valuation Significantly Overvalued
! 5 Warning Signs
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What is Fortinet Margin of Safety % (DCF FCF Based)?

Fortinet STU:FO8 +3.13% 93 Margin of Safety % (DCF FCF Based) is -51.37% as of Jun. 26, 2026. GuruFocus rates STU:FO8 with a GF Score™ of 93/100 and a GF Value™ of €87.05 (Significantly Overvalued). The stock has 5 warning signs investors should review.

Margin of Safety % (DCF FCF Based) = (Intrinsic Value: DCF (FCF Based) - Current Price) / Intrinsic Value: DCF (FCF Based).

Note: Discounted FCF model is only suitable for predictable companies (Business Predictability Rank higher than 1-Star). If the company's Predictability Rank is 1-Star or Not Rated, result may not be accurate due to the low predictability of business and the data will not be stored into our database.

As of today (2026-06-26), Fortinet's Predictability Rank is 5-Stars. Fortinet's intrinsic value calculated from the Discounted FCF model is €80.81 and current share price is €131.74. Consequently,

Fortinet's Margin of Safety % (DCF FCF Based) using Discounted FCF model is -51.37%.

STU:FO8 vs SNPS, NET, CRWV: Margin of Safety % (DCF FCF Based) Comparison

For the Software - Infrastructure subindustry, Fortinet's Margin of Safety % (DCF FCF Based), along with its competitors' market caps and Margin of Safety % (DCF FCF Based) data, can be viewed below:

* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.

Fortinet Margin of Safety % (DCF FCF Based) vs Software Industry

For the Software industry and Technology sector, Fortinet's Margin of Safety % (DCF FCF Based) distribution charts can be found below:

* The bar in red indicates where Fortinet's Margin of Safety % (DCF FCF Based) falls into.


STU:FO8
93GF Score
Fortinet Inc STU:FO8
Margin of Safety % (DCF FCF Based) is just one metric. See GF Score™, valuation, warning signs, and more.
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Fortinet Margin of Safety % (DCF FCF Based) Calculation

Fortinet's Margin of Safety % (DCF FCF Based) for today is calculated as

Margin of Safety % (DCF FCF Based)=(Intrinsic Value: DCF (FCF Based)-Current Price)/Intrinsic Value: DCF (FCF Based)
=(87.03-131.74)/87.03
=-51.37 %

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

The intrinsic value is calculated from the Discounted FCF model with default parameters. The calculation method is the same as Discounted Earnings model except free cash flow are used in the calculation instead of earnings per share.

What does a Margin of Safety % (DCF FCF Based) of -51.37% mean?
Fortinet (STU:FO8) has a Margin of Safety % (DCF FCF Based) of -51.37% as of Jun. 26, 2026. Margin of Safety % (DCF FCF Based) is the percent difference between the current price and the intrinsic DCF FCF price. View historical data on Fortinet.
Is Fortinet's Margin of Safety % (DCF FCF Based) too high?
Fortinet's current Margin of Safety % (DCF FCF Based) is -51.37%. Overall, Fortinet has a GF Score™ of 93/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Fortinet's Margin of Safety % (DCF FCF Based) compare to SNPS and NET?
Fortinet's Margin of Safety % (DCF FCF Based) of -51.37% can be compared against companies in the Software industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Margin of Safety % (DCF FCF Based) for a Software company?
A good Margin of Safety % (DCF FCF Based) depends on the Software industry context. However, Margin of Safety % (DCF FCF Based) should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Margin of Safety % (DCF FCF Based) mean?
A high Margin of Safety % (DCF FCF Based) can signal that a stock is expensive relative to its fundamentals. Margin of Safety % (DCF FCF Based) is the percent difference between the current price and the intrinsic DCF FCF price. View historical data on Fortinet. Fortinet's current Margin of Safety % (DCF FCF Based) is -51.37%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Fortinet stock overvalued right now?
Based on GuruFocus' analysis, Fortinet (STU:FO8) is currently considered Significantly Overvalued. The stock's GF Value™ is €87.05, compared to a current price of €131.74 — trading 51.3% above its estimated fair value. The current Margin of Safety % (DCF FCF Based) is -51.37%. Fortinet's overall GF Score™ is 93/100 with 5 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Margin of Safety % (DCF FCF Based) calculated?
Margin of Safety % (DCF FCF Based) is calculated from a company's financial statements. For Fortinet (STU:FO8), the current Margin of Safety % (DCF FCF Based) is -51.37% as of Jun. 26, 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.

Is Fortinet (STU:FO8) Overvalued in 2026?

Based on GuruFocus' analysis, Fortinet stock appears to be overvalued. The current stock price of €131.74 is trading 51.3% above its estimated GF Value™ of €87.05. GuruFocus considers Fortinet to be Significantly Overvalued.

Key valuation signals for STU:FO8:

  • Margin of Safety % (DCF FCF Based): -51.37%
  • GF Value™: €87.05 vs. price of €131.74 (51.3% above fair value)
  • GF Score™: 93/100 with 5 warning signs

No single metric tells the full story. See the STU:FO8 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.

Fortinet Business Description

Address 909 Kifer Road, Sunnyvale, CA, USA, 94086
Fortinet is a platform-based cybersecurity vendor with product offerings covering network security, cloud security, zero-trust access, and security operations. The firm derives a majority of its revenue through sales of its subscriptions and support-based business. The California-based firm has more than 800,000 customers across the world.
93GF Score

Get the complete analysis for STU:FO8

Margin of Safety % (DCF FCF Based) is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

€131.74
Price
€87.05
GF Value