Fortinet (BSP:F1TN34) Cyclically Adjusted PB Ratio: 146.68 (As of Aug. 19, 2026) — 161% Above Median

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BSP:F1TN34 Fortinet Inc BSP:F1TN34
88 GF Score
Price R$68.94
GF Value R$45.85
Valuation Significantly Overvalued
! 4 Warning Signs
View Full Analysis

What is Fortinet Cyclically Adjusted PB Ratio?

Fortinet BSP:F1TN34 +1.68% 88 Cyclically Adjusted PB Ratio is 146.68 as of Aug. 19, 2026, which is 161% above its 10-year median of 56.24. GuruFocus rates BSP:F1TN34 with a GF Score™ of 88/100 and a GF Value™ of R$45.85 (Significantly Overvalued). The stock has 4 warning signs investors should review. Among 1,543 Software companies, Fortinet ranks worse than 99.68% on this metric.

As of today (2026-08-19), Fortinet's current share price is R$68.94. Fortinet's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 was R$0.47. Fortinet's Cyclically Adjusted PB Ratio for today is 146.68.

The historical rank and industry rank for Fortinet's Cyclically Adjusted PB Ratio or its related term are showing as below:

BSP:F1TN34' s Cyclically Adjusted PB Ratio Range Over the Past 10 Years
Min: 17.53   Med: 56.24   Max: 147.23
Current: 143.72

During the past years, Fortinet's highest Cyclically Adjusted PB Ratio was 147.23. The lowest was 17.53. And the median was 56.24.

BSP:F1TN34's Cyclically Adjusted PB Ratio is ranked worse than
99.68% of 1543 companies
in the Software industry
Industry Median: 2.34 vs BSP:F1TN34: 143.72

The Shiller PE Ratio was first used by professor Robert Shiller. He uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings per share of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted book value per share of a company over the past 10 years.

Fortinet's adjusted book value per share data for the three months ended in Jun. 2026 was R$0.904. Add all the adjusted book value per share for the past 10 years together and divide the count will get our Cyclically Adjusted Book per Share, which is R$0.47 for the trailing ten years ended in Jun. 2026.

Shiller PE for Stocks: The True Measure of Stock Valuation


Fortinet  (BSP:F1TN34) Cyclically Adjusted PB Ratio Explanation

Compared with the regular PB Ratio, which works poorly for cyclical businesses, the Cyclically Adjusted PB Ratio smoothed out the fluctuations of book value during business cycles. Therefore it is more accurate in reflecting the valuation of the company.

If a company has consistent business performance, the Cyclically Adjusted PB Ratio should give similar results to regular PB Ratio.


Fortinet Cyclically Adjusted PB Ratio Related Terms


Fortinet Cyclically Adjusted PB Ratio Historical Data

* Premium members only.

The historical data trend for Fortinet's Cyclically Adjusted PB Ratio can be seen below:

* 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.

Fortinet Cyclically Adjusted PB Ratio Chart

Fortinet Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Cyclically Adjusted PB Ratio
Get a 7-Day Free Trial Premium Member Only Premium Member Only 69.31 49.11 62.70 100.50 76.12

Fortinet Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
Cyclically Adjusted PB Ratio Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 102.28 81.31 76.12 76.61 139.73

BSP:F1TN34 vs NET, SNPS, XYZ: Cyclically Adjusted PB Ratio Comparison

For the Software - Infrastructure subindustry, Fortinet's Cyclically Adjusted PB Ratio, along with its competitors' market caps and Cyclically Adjusted PB Ratio 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 Cyclically Adjusted PB Ratio vs Software Industry

For the Software industry and Technology sector, Fortinet's Cyclically Adjusted PB Ratio distribution charts can be found below:

* The bar in red indicates where Fortinet's Cyclically Adjusted PB Ratio falls into.


BSP:F1TN34
88GF Score
Fortinet Inc BSP:F1TN34
Cyclically Adjusted PB Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Fortinet Cyclically Adjusted PB Ratio Calculation

Like the Shiller PE Ratio, the Cyclically Adjusted PB Ratio takes the Book Value per Share from the past 10 years, adjusts it for inflation, and then calculates the average. This average is then used for the P/B calculation. Because it considers this 10-year average, it's often referred to as the CAPB Ratio.

The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio.

Fortinet's Cyclically Adjusted PB Ratio for today is calculated as

Cyclically Adjusted PB Ratio=Share Price/ Cyclically Adjusted Book per Share
=68.94/0.47
=146.68

* 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.

Fortinet's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 is calculated as:

For example, Fortinet's adjusted Book Value per Share data for the three months ended in Jun. 2026 was:

Adj_Book=Book Value per Share/CPI of Jun. 2026 (Change)*Current CPI (Jun. 2026)
=0.904/333.9520*333.9520
=0.904

Current CPI (Jun. 2026) = 333.9520.

Fortinet Quarterly Data

Book Value per Share CPI Adj_Book
201609 0.257 241.428 0.355
201612 0.271 241.432 0.375
201703 0.267 243.801 0.366
201706 0.288 244.955 0.393
201709 0.270 246.819 0.365
201712 0.193 246.524 0.261
201803 0.226 249.554 0.302
201806 0.290 251.989 0.384
201809 0.359 252.439 0.475
201812 0.385 251.233 0.512
201903 0.397 254.202 0.522
201906 0.422 256.143 0.550
201909 0.481 256.759 0.626
201912 0.535 256.974 0.695
202003 0.269 258.115 0.348
202006 0.291 257.797 0.377
202009 0.395 260.280 0.507
202012 0.452 260.474 0.580
202103 0.564 264.877 0.711
202106 0.539 271.696 0.663
202109 0.602 274.310 0.733
202112 0.455 278.802 0.545
202203 0.113 287.504 0.131
202206 -0.210 296.311 -0.237
202209 -0.356 296.808 -0.401
202212 -0.158 296.797 -0.178
202303 0.006 301.836 0.007
202306 0.165 305.109 0.181
202309 0.039 307.789 0.042
202312 -0.249 306.746 -0.271
202403 -0.075 312.332 -0.080
202406 0.169 314.175 0.180
202409 0.547 315.301 0.579
202412 0.990 315.605 1.048
202503 1.224 319.799 1.278
202506 1.244 322.561 1.288
202509 0.442 324.800 0.454
202512 0.757 324.054 0.780
202603 0.588 330.213 0.595
202606 0.904 333.952 0.904

Add all the adjusted book value per share together and divide the count will get our Cyclically Adjusted Book per Share.

Please note that we use the CPI data of the country/region where the company is headquartered. If the CPI data for that country/region is not available, then we will use the CPI data of the United States as default.

What does a Cyclically Adjusted PB Ratio of 146.68 mean?
Fortinet (BSP:F1TN34) has a Cyclically Adjusted PB Ratio of 146.68 as of Aug. 19, 2026. Cyclically Adjusted PB Ratio is the ratio of share price to a company's inflation-adjusted book value per share over a 10-year period. View historical data on Fortinet and its competitors. This is 161% above median its historical median of 56.24. Over the past decade, Fortinet's Cyclically Adjusted PB Ratio has ranged from 17.53 to 147.23. According to the industry distribution chart, Fortinet ranks #1538 out of 1543 companies in the Software industry, placing it in the top 99.7%.
Is Fortinet's Cyclically Adjusted PB Ratio too high?
Fortinet's current Cyclically Adjusted PB Ratio of 146.68 is 161% above median its 10-year median of 56.24. Over the past 10 years, this metric has ranged from a low of 17.53 to a high of 147.23. The Software industry median Cyclically Adjusted PB Ratio is 2.34. Fortinet's value of 146.68 is 6168.4% above this industry median. Based on the distribution chart, Fortinet ranks #1538 out of 1543 companies in the Software industry, which is in the bottom quartile relative to peers. Overall, Fortinet has a GF Score™ of 88/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Fortinet's Cyclically Adjusted PB Ratio compare to NET and SNPS?
According to the Software industry distribution chart, Fortinet ranks #1538 out of 1543 companies for Cyclically Adjusted PB Ratio. This places Fortinet in the lower half of its industry. The industry median Cyclically Adjusted PB Ratio is 2.34. Fortinet's value of 146.68 is 6168.4% above this benchmark. Historically, Fortinet's own Cyclically Adjusted PB Ratio has ranged from 17.53 to 147.23 over the past decade. While the company's 10-year median is 56.24 vs. the industry median of 2.34, Fortinet has consistently been above the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Cyclically Adjusted PB Ratio for a Software company?
The median Cyclically Adjusted PB Ratio among Software companies is 2.34, based on 1,543 companies in the industry. Companies in the top quartile (top 25%) have a Cyclically Adjusted PB Ratio significantly above this median, while those in the bottom quartile fall well below. However, Cyclically Adjusted PB Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Fortinet's current Cyclically Adjusted PB Ratio of 146.68 is 6168.4% above the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Cyclically Adjusted PB Ratio mean?
A high Cyclically Adjusted PB Ratio can signal that a stock is expensive relative to its fundamentals. Cyclically Adjusted PB Ratio is the ratio of share price to a company's inflation-adjusted book value per share over a 10-year period. View historical data on Fortinet and its competitors. For the Software industry, the median Cyclically Adjusted PB Ratio is 2.34 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Fortinet's current Cyclically Adjusted PB Ratio is 146.68, which is 161% above median its own 10-year median of 56.24. 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 (BSP:F1TN34) is currently considered Significantly Overvalued. The stock's GF Value™ is R$45.85, compared to a current price of R$68.94 — trading 50.4% above its estimated fair value. The current Cyclically Adjusted PB Ratio is 146.68, which is 161% above median its 10-year median of 56.24 and 6168.4% above the Software industry median of 2.34. Fortinet's overall GF Score™ is 88/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Cyclically Adjusted PB Ratio calculated?
Cyclically Adjusted PB Ratio is calculated from a company's financial statements. For Fortinet (BSP:F1TN34), the current Cyclically Adjusted PB Ratio is 146.68 as of Aug. 19, 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 (BSP:F1TN34) Overvalued in 2026?

Based on GuruFocus' analysis, Fortinet stock appears to be overvalued. The current stock price of R$68.94 is trading 50.4% above its estimated GF Value™ of R$45.85. GuruFocus considers Fortinet to be Significantly Overvalued.

Key valuation signals for BSP:F1TN34:

  • Cyclically Adjusted PB Ratio: 146.68 (161% above median its 10-year median of 56.24)
  • GF Value™: R$45.85 vs. price of R$68.94 (50.4% above fair value)
  • GF Score™: 88/100 with 4 warning signs
  • Industry Position: 6168.4% above the Software median (#1538 of 1543)

No single metric tells the full story. See the BSP:F1TN34 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.
88GF Score

Get the complete analysis for BSP:F1TN34

Cyclically Adjusted PB Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

R$68.94
Price
R$45.85
GF Value