F5 (BSP:F1FI34) Cyclically Adjusted PB Ratio: 10.00 (As of Aug. 25, 2026) — 35% Above Median

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Director of Data and Quant Analytics at GuruFocus
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Founder & CEO of GuruFocus
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BSP:F1FI34 F5 Inc BSP:F1FI34
65 GF Score
Price R$512.00
GF Value R$334.28
Valuation Significantly Overvalued
! 1 Warning Sign
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What is F5 Cyclically Adjusted PB Ratio?

F5 BSP:F1FI34 65 Cyclically Adjusted PB Ratio is 10.00 as of Aug. 25, 2026, which is 35% above its 10-year median of 7.43. GuruFocus rates BSP:F1FI34 with a GF Score™ of 65/100 and a GF Value™ of R$334.28 (Significantly Overvalued). The stock has 1 warning sign investors should review. Among 1,515 Software companies, F5 ranks worse than 86.73% on this metric.

As of today (2026-08-25), F5's current share price is R$512.00. F5's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 was R$51.18. F5's Cyclically Adjusted PB Ratio for today is 10.00.

The historical rank and industry rank for F5's Cyclically Adjusted PB Ratio or its related term are showing as below:

BSP:F1FI34' s Cyclically Adjusted PB Ratio Range Over the Past 10 Years
Min: 4.34   Med: 7.43   Max: 11.43
Current: 8.53

During the past years, F5's highest Cyclically Adjusted PB Ratio was 11.43. The lowest was 4.34. And the median was 7.43.

BSP:F1FI34's Cyclically Adjusted PB Ratio is ranked worse than
86.73% of 1515 companies
in the Software industry
Industry Median: 2.31 vs BSP:F1FI34: 8.53

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.

F5's adjusted book value per share data for the three months ended in Jun. 2026 was R$86.919. 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$51.18 for the trailing ten years ended in Jun. 2026.

Shiller PE for Stocks: The True Measure of Stock Valuation


F5  (BSP:F1FI34) 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.


F5 Cyclically Adjusted PB Ratio Related Terms


F5 Cyclically Adjusted PB Ratio Historical Data

* Premium members only.

The historical data trend for F5'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.

F5 Cyclically Adjusted PB Ratio Chart

F5 Annual Data
Trend Sep16 Sep17 Sep18 Sep19 Sep20 Sep21 Sep22 Sep23 Sep24 Sep25
Cyclically Adjusted PB Ratio
Get a 7-Day Free Trial Premium Member Only Premium Member Only 7.92 4.96 4.98 6.15 8.03

F5 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 7.53 8.03 6.21 6.75 9.36

BSP:F1FI34 vs ZS, MDB, OKTA: Cyclically Adjusted PB Ratio Comparison

For the Software - Infrastructure subindustry, F5'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.


F5 Cyclically Adjusted PB Ratio vs Software Industry

For the Software industry and Technology sector, F5's Cyclically Adjusted PB Ratio distribution charts can be found below:

* The bar in red indicates where F5's Cyclically Adjusted PB Ratio falls into.


BSP:F1FI34
65GF Score
F5 Inc BSP:F1FI34
Cyclically Adjusted PB Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

F5 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.

F5's Cyclically Adjusted PB Ratio for today is calculated as

Cyclically Adjusted PB Ratio=Share Price/ Cyclically Adjusted Book per Share
=512.00/51.18
=10.00

* 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.

F5's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 is calculated as:

For example, F5'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)
=86.919/333.9520*333.9520
=86.919

Current CPI (Jun. 2026) = 333.9520.

F5 Quarterly Data

Book Value per Share CPI Adj_Book
201609 14.759 241.428 20.415
201612 15.466 241.432 21.393
201703 14.447 243.801 19.789
201706 15.618 244.955 21.292
201709 15.381 246.819 20.811
201712 16.346 246.524 22.143
201803 16.453 249.554 22.017
201806 19.624 251.989 26.007
201809 21.929 252.439 29.010
201812 22.780 251.233 30.280
201903 23.603 254.202 31.008
201906 26.031 256.143 33.938
201909 30.052 256.759 39.087
201912 32.562 256.974 42.316
202003 40.260 258.115 52.089
202006 45.678 257.797 59.172
202009 49.323 260.280 63.284
202012 50.118 260.474 64.256
202103 47.102 264.877 59.385
202106 45.703 271.696 56.175
202109 51.357 274.310 62.523
202112 56.012 278.802 67.092
202203 49.322 287.504 57.290
202206 49.221 296.311 55.474
202209 54.069 296.808 60.835
202212 56.330 296.797 63.382
202303 58.697 301.836 64.942
202306 54.383 305.109 59.524
202309 58.395 307.789 63.359
202312 59.604 306.746 64.890
202403 62.307 312.332 66.620
202406 69.557 314.175 73.936
202409 74.577 315.301 78.988
202412 84.899 315.605 89.834
202503 82.368 319.799 86.013
202506 83.179 322.561 86.116
202509 83.489 324.800 85.841
202512 84.834 324.054 87.425
202603 84.074 330.213 85.026
202606 86.919 333.952 86.919

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 10.00 mean?
F5 (BSP:F1FI34) has a Cyclically Adjusted PB Ratio of 10.00 as of Aug. 25, 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 F5 and its competitors. This is 35% above median its historical median of 7.43. Over the past decade, F5's Cyclically Adjusted PB Ratio has ranged from 4.34 to 11.43. According to the industry distribution chart, F5 ranks #1314 out of 1515 companies in the Software industry, placing it in the top 86.7%.
Is F5's Cyclically Adjusted PB Ratio too high?
F5's current Cyclically Adjusted PB Ratio of 10.00 is 35% above median its 10-year median of 7.43. Over the past 10 years, this metric has ranged from a low of 4.34 to a high of 11.43. The Software industry median Cyclically Adjusted PB Ratio is 2.31. F5's value of 10.00 is 332.9% above this industry median. Based on the distribution chart, F5 ranks #1314 out of 1515 companies in the Software industry, which is in the bottom quartile relative to peers. Overall, F5 has a GF Score™ of 65/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does F5's Cyclically Adjusted PB Ratio compare to ZS and MDB?
According to the Software industry distribution chart, F5 ranks #1314 out of 1515 companies for Cyclically Adjusted PB Ratio. This places F5 in the lower half of its industry. The industry median Cyclically Adjusted PB Ratio is 2.31. F5's value of 10.00 is 332.9% above this benchmark. Historically, F5's own Cyclically Adjusted PB Ratio has ranged from 4.34 to 11.43 over the past decade. While the company's 10-year median is 7.43 vs. the industry median of 2.31, F5 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 2.31, based on 1,515 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. F5's current Cyclically Adjusted PB Ratio of 10.00 is 332.9% 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 F5 and its competitors. For the Software industry, the median Cyclically Adjusted PB Ratio is 2.31 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. F5's current Cyclically Adjusted PB Ratio is 10.00, which is 35% above median its own 10-year median of 7.43. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is F5 stock overvalued right now?
Based on GuruFocus' analysis, F5 (BSP:F1FI34) is currently considered Significantly Overvalued. The stock's GF Value™ is R$334.28, compared to a current price of R$512.00 — trading 53.2% above its estimated fair value. The current Cyclically Adjusted PB Ratio is 10.00, which is 35% above median its 10-year median of 7.43 and 332.9% above the Software industry median of 2.31. F5's overall GF Score™ is 65/100 with 1 warning sign 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 F5 (BSP:F1FI34), the current Cyclically Adjusted PB Ratio is 10.00 as of Aug. 25, 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 F5 (BSP:F1FI34) Overvalued in 2026?

Based on GuruFocus' analysis, F5 stock appears to be overvalued. The current stock price of R$512.00 is trading 53.2% above its estimated GF Value™ of R$334.28. GuruFocus considers F5 to be Significantly Overvalued.

Key valuation signals for BSP:F1FI34:

  • Cyclically Adjusted PB Ratio: 10.00 (35% above median its 10-year median of 7.43)
  • GF Value™: R$334.28 vs. price of R$512.00 (53.2% above fair value)
  • GF Score™: 65/100 with 1 warning sign
  • Industry Position: 332.9% above the Software median (#1314 of 1515)

No single metric tells the full story. See the BSP:F1FI34 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


F5 Business Description

Address 801 5th Avenue, Seattle, WA, USA, 98104
F5 is a market leader in the application delivery controller market. The company sells products for security, application performance, and automation. Its three customer verticals are enterprises, service providers, and government entities. Revenue is evenly split between its services business and products business with revenue trending toward products due to software adoption. The Seattle-based firm was incorporated in 1996, and went public in 1999.
65GF Score

Get the complete analysis for BSP:F1FI34

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

R$512.00
Price
R$334.28
GF Value