SPXSF (Spirax Group) Cyclically Adjusted Book per Share: $20.11 (As of Dec. 2025)


SPXSF Spirax Group PLC SPXSF
89 GF Score
Price $91.10
GF Value $109.04
Valuation Modestly Undervalued
! 4 Warning Signs
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What is Spirax Group Cyclically Adjusted Book per Share?

Spirax Group SPXSF 89 Cyclically Adjusted Book per Share is $20.11 as of Dec. 2025. GuruFocus rates SPXSF with a GF Score™ of 89/100 and a GF Value™ of $109.04 (Modestly Undervalued). The stock has 4 warning signs investors should review.

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted Book per Share and 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.

Spirax Group's adjusted book value per share data for the fiscal year that ended in Dec. 2025 was $22.184. 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 $20.11 for the trailing ten years ended in Dec. 2025.

During the past 12 months, Spirax Group's average Cyclically Adjusted Book Growth Rate was 10.30% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 10.80% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 13.00% per year. During the past 10 years, the average Cyclically Adjusted Book Growth Rate was 11.50% per year. Please click Growth Rate Calculation Example (GuruFocus) to see how GuruFocus calculates Wal-Mart Stores Inc (WMT)'s revenue growth rate. You can apply the same method to get the Cyclically Adjusted Book Growth Rate using Cyclically Adjusted Book per Share data.

During the past 13 years, the highest 3-Year average Cyclically Adjusted Book Growth Rate of Spirax Group was 14.60% per year. The lowest was 4.20% per year. And the median was 8.45% per year.

As of today (2026-06-29), Spirax Group's current stock price is $ 91.10. Spirax Group's Cyclically Adjusted Book per Share for the fiscal year that ended in Dec. 2025 was $20.11. Spirax Group's Cyclically Adjusted PB Ratio of today is 4.53.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Spirax Group was 21.04. The lowest was 4.25. And the median was 10.06.


Spirax Group  (OTCPK:SPXSF) Cyclically Adjusted Book per Share Explanation

If a company grows much fast than inflation, Cyclically Adjusted Book per Share may underestimate the company's equity. Cyclically Adjusted PB Ratio can seem to be too high even the actual PB Ratio is low.

For the Cyclically Adjusted PB Ratio, the book value of the past 10 years are inflation-adjusted and averaged. The result is used for P/B calculation. Since it looks at the average over the last 10 years, the Cyclically Adjusted PB Ratio is also called CAPB Ratio.

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.

Spirax Group's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=91.10/20.11
=4.53

* 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.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Spirax Group was 21.04. The lowest was 4.25. And the median was 10.06.


Be Aware

Cyclically Adjusted PB Ratio works better for cyclical companies. It gives you a better idea on the company's real book value.


Spirax Group Cyclically Adjusted Book per Share Related Terms


Spirax Group Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Spirax Group's Cyclically Adjusted Book per Share 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.

Spirax Group Cyclically Adjusted Book per Share Chart

Spirax Group Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Cyclically Adjusted Book per Share
Get a 7-Day Free Trial Premium Member Only Premium Member Only 11.74 13.03 15.18 16.43 20.11

Spirax Group Semi-Annual Data
Jun16 Dec16 Jun17 Dec17 Jun18 Dec18 Jun19 Dec19 Jun20 Dec20 Jun21 Dec21 Jun22 Dec22 Jun23 Dec23 Jun24 Dec24 Jun25 Dec25
Cyclically Adjusted Book per Share 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 15.18 0.00 16.43 0.00 20.11

SPXSF vs GEV, ETN, PH: Cyclically Adjusted Book per Share Comparison

For the Specialty Industrial Machinery subindustry, Spirax Group'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.


Spirax Group Cyclically Adjusted PB Ratio vs Industrial Products Industry

For the Industrial Products industry and Industrials sector, Spirax Group's Cyclically Adjusted PB Ratio distribution charts can be found below:

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


SPXSF
89GF Score
Spirax Group PLC SPXSF
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Spirax Group Cyclically Adjusted Book per Share Calculation

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted Book per Share and 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.

What is Cyclically Adjusted Book per Share? How do we calculate Cyclically Adjusted Book per Share?

Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years. Let's use an example to explain.

If we want to calculate the Cyclically Adjusted Book per Share of Wal-Mart (WMT) for Dec. 31, 2010, we need to have the inflation data and the book value per share from 2001 through 2010.

We adjusted the 2001 book value per share data with the total inflation from 2001 through 2010 to the equivalent book value in 2010. If the total inflation from 2001 to 2010 is 40%, and Wal-Mart's book value is $1 a share in 2001, then the 2001's equivalent book value in 2010 is $1.4 a share. If Wal-Mart's book value is $1 again in 2002, and the total inflation from 2002 through 2010 is 35%, then the equivalent 2002 book value in 2010 is $1.35. So on and so forth, you get the equivalent book value per share of past 10 years. Then you add them together and divided the sum by the count to get 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.

For example, Spirax Group's adjusted Book Value per Share data for the fiscal year that ended in Dec. 2025 was:

Adj_Book=Book Value per Share /CPI of Dec. 2025 (Change)*Current CPI (Dec. 2025)
=22.184/139.9000*139.9000
=22.184

Current CPI (Dec. 2025) = 139.9000.

Spirax Group Annual Data

Book Value per Share CPI Adj_Book
201612 8.898 102.200 12.180
201712 11.081 105.000 14.764
201812 13.159 107.100 17.189
201912 14.669 108.500 18.914
202012 15.511 109.400 19.835
202112 18.189 114.700 22.185
202212 19.303 125.300 21.552
202312 19.887 130.500 21.319
202412 20.734 135.100 21.471
202512 22.184 139.900 22.184

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

What does a Cyclically Adjusted Book per Share of $20.11 mean?
Spirax Group (SPXSF) has a Cyclically Adjusted Book per Share of $20.11 as of Dec. 2025. Cyclically adjusted book value per share represents the company's inflation-adjusted book value per share over a 10-year period. View historical data on Spirax Group and its competitors.
Is Spirax Group's Cyclically Adjusted Book per Share too high?
Spirax Group's current Cyclically Adjusted Book per Share is $20.11. Overall, Spirax Group has a GF Score™ of 89/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Spirax Group's Cyclically Adjusted Book per Share compare to GEV and ETN?
Spirax Group's Cyclically Adjusted Book per Share of $20.11 can be compared against companies in the Industrial Products industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Cyclically Adjusted Book per Share for an Industrial Products company?
A good Cyclically Adjusted Book per Share depends on the Industrial Products industry context. However, Cyclically Adjusted Book per Share 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 Cyclically Adjusted Book per Share mean?
A high Cyclically Adjusted Book per Share can signal that a stock is expensive relative to its fundamentals. Cyclically adjusted book value per share represents the company's inflation-adjusted book value per share over a 10-year period. View historical data on Spirax Group and its competitors. Spirax Group's current Cyclically Adjusted Book per Share is $20.11. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Spirax Group stock overvalued right now?
Based on GuruFocus' analysis, Spirax Group (SPXSF) is currently considered Modestly Undervalued. The stock's GF Value™ is $109.04, compared to a current price of $91.10 — trading 16.5% below its estimated fair value. The current Cyclically Adjusted Book per Share is $20.11. Spirax Group's overall GF Score™ is 89/100 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 Book per Share calculated?
Cyclically Adjusted Book per Share is calculated from a company's financial statements. For Spirax Group (SPXSF), the current Cyclically Adjusted Book per Share is $20.11 as of Dec. 2025. 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 Spirax Group (SPXSF) Overvalued in 2026?

Based on GuruFocus' analysis, Spirax Group stock appears to be undervalued. The current stock price of $91.10 is trading 16.5% below its estimated GF Value™ of $109.04. GuruFocus considers Spirax Group to be Modestly Undervalued.

Key valuation signals for SPXSF:

  • Cyclically Adjusted Book per Share: $20.11
  • GF Value™: $109.04 vs. price of $91.10 (16.5% below fair value)
  • GF Score™: 89/100 with 4 warning signs

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


Spirax Group Business Description

Address Cirencester Road, Charlton House, Charlton Kings, Cheltenham, Gloucestershire, GBR, GL53 8ER
Spirax is a global manufacturer of a wide range of applications for industrial and commercial steam systems, electric thermal solutions, and peristaltic pumps used across multiple industries. The group operates across three segments and has over 110,000 direct customers across 130 countries. Approximately 85% of group sales are generated from recurring maintenance and small improvements to existing customer systems. Spirax has 1,700 product lines and 2,100 sales and service engineers, who account for 25% of employees.
89GF Score

Get the complete analysis for SPXSF

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

$91.10
Price
$109.04
GF Value