AAON (FRA:AAO) Cyclically Adjusted Book per Share: €6.02 (As of Jun. 2026)

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Director of Data and Quant Analytics at GuruFocus
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Founder & CEO of GuruFocus
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.

FRA:AAO AAON Inc FRA:AAO
89 GF Score
Price €66.20
GF Value €124.95
Valuation Significantly Undervalued
! 5 Warning Signs
View Full Analysis

What is AAON Cyclically Adjusted Book per Share?

AAON FRA:AAO -5.64% 89 Cyclically Adjusted Book per Share is €6.02 as of Jun. 2026. GuruFocus rates FRA:AAO with a GF Score™ of 89/100 and a GF Value™ of €124.95 (Significantly Undervalued). The stock has 5 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.

AAON's adjusted book value per share for the three months ended in Jun. 2026 was €10.638. 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 €6.02 for the trailing ten years ended in Jun. 2026.

During the past 12 months, AAON's average Cyclically Adjusted Book Growth Rate was 17.40% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 17.30% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 18.40% per year. During the past 10 years, the average Cyclically Adjusted Book Growth Rate was 15.10% 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 AAON was 29.40% per year. The lowest was 9.80% per year. And the median was 15.15% per year.

As of today (2026-08-30), AAON's current stock price is €66.20. AAON's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 was €6.02. AAON's Cyclically Adjusted PB Ratio of today is 11.00.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of AAON was 26.28. The lowest was 9.32. And the median was 13.95.


AAON  (FRA:AAO) 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.

AAON's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=66.20/6.02
=11.00

* 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.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of AAON was 26.28. The lowest was 9.32. And the median was 13.95.


Be Aware

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


AAON Cyclically Adjusted Book per Share Related Terms


AAON Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for AAON'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.

AAON Cyclically Adjusted Book per Share Chart

AAON 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 2.39 3.72 4.17 5.33 5.28

AAON Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
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 4.99 5.08 5.28 5.50 6.02

FRA:AAO vs BLDR, AWI, FBIN: Cyclically Adjusted Book per Share Comparison

For the Building Products & Equipment subindustry, AAON'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.


AAON Cyclically Adjusted PB Ratio vs Construction Industry

For the Construction industry and Industrials sector, AAON's Cyclically Adjusted PB Ratio distribution charts can be found below:

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


FRA:AAO
89GF Score
AAON Inc FRA:AAO
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

AAON 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, AAON'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)
=10.638/333.9520*333.9520
=10.638

Current CPI (Jun. 2026) = 333.9520.

AAON Quarterly Data

Book Value per Share CPI Adj_Book
201609 2.304 241.428 3.187
201612 2.471 241.432 3.418
201703 2.509 243.801 3.437
201706 2.455 244.955 3.347
201709 2.453 246.819 3.319
201712 2.549 246.524 3.453
201803 2.473 249.554 3.309
201806 2.602 251.989 3.448
201809 2.732 252.439 3.614
201812 2.811 251.233 3.737
201903 2.937 254.202 3.858
201906 2.995 256.143 3.905
201909 3.247 256.759 4.223
201912 3.343 256.974 4.344
202003 3.551 258.115 4.594
202006 3.657 257.797 4.737
202009 3.735 260.280 4.792
202012 3.682 260.474 4.721
202103 3.985 264.877 5.024
202106 4.051 271.696 4.979
202109 4.327 274.310 5.268
202112 5.236 278.802 6.272
202203 5.477 287.504 6.362
202206 5.823 296.311 6.563
202209 6.628 296.808 7.457
202212 6.605 296.797 7.432
202303 7.001 301.836 7.746
202306 7.470 305.109 8.176
202309 7.872 307.789 8.541
202312 8.272 306.746 9.006
202403 8.793 312.332 9.402
202406 8.498 314.175 9.033
202409 8.837 315.301 9.360
202412 9.670 315.605 10.232
202503 9.277 319.799 9.688
202506 8.858 322.561 9.171
202509 9.013 324.800 9.267
202512 9.356 324.054 9.642
202603 9.873 330.213 9.985
202606 10.638 333.952 10.638

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 €6.02 mean?
AAON (FRA:AAO) has a Cyclically Adjusted Book per Share of €6.02 as of Jun. 2026. 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 AAON and its competitors.
Is AAON's Cyclically Adjusted Book per Share too high?
AAON's current Cyclically Adjusted Book per Share is €6.02. Overall, AAON has a GF Score™ of 89/100 and is considered Significantly Undervalued, reflecting its overall financial health beyond just this single metric.
How does AAON's Cyclically Adjusted Book per Share compare to BLDR and AWI?
AAON's Cyclically Adjusted Book per Share of €6.02 can be compared against companies in the Construction 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 a Construction company?
A good Cyclically Adjusted Book per Share depends on the Construction 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 AAON and its competitors. AAON's current Cyclically Adjusted Book per Share is €6.02. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is AAON stock overvalued right now?
Based on GuruFocus' analysis, AAON (FRA:AAO) is currently considered Significantly Undervalued. The stock's GF Value™ is €124.95, compared to a current price of €66.20 — trading 47% below its estimated fair value. The current Cyclically Adjusted Book per Share is €6.02. AAON's overall GF Score™ is 89/100 with 5 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 AAON (FRA:AAO), the current Cyclically Adjusted Book per Share is €6.02 as of Jun. 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 AAON (FRA:AAO) Overvalued in 2026?

Based on GuruFocus' analysis, AAON stock appears to be undervalued. The current stock price of €66.20 is trading 47% below its estimated GF Value™ of €124.95. GuruFocus considers AAON to be Significantly Undervalued.

Key valuation signals for FRA:AAO:

  • Cyclically Adjusted Book per Share: €6.02
  • GF Value™: €124.95 vs. price of €66.20 (47% below fair value)
  • GF Score™: 89/100 with 5 warning signs

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


AAON Business Description

Other Exchanges AAON:USA
Address 2425 South Yukon Avenue, Tulsa, OK, USA, 74107
AAON Inc is a manufacturer of air-conditioning and heating equipment. The products include rooftop units, chillers, packaged outdoor mechanical rooms, air-handling units, makeup air units, energy-recovery units, condensing units, geothermal heat pumps, and self-contained units and coils. The company operates through three segments: AAON Oklahoma, AAON Coil Products, and BASX. It generates the majority of its revenue from the AAON Oklahoma segment which derives maximum revenue, engineers, manufactures, and sells, semi-custom, and custom HVAC systems, designs and manufactures control solutions, and sells retail parts to customers through retail part stores and online.
89GF Score

Get the complete analysis for FRA:AAO

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

€66.20
Price
€124.95
GF Value