Ideal Power (FRA:5ILA) Cyclically Adjusted Book per Share: €3.99 (As of Jun. 2026)

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
Director of Data and Quant Analytics at GuruFocus
Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Reviewed by: Charlie Tian Charlie Tian
Charlie Tian
Charlie Tian
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:5ILA Ideal Power Inc FRA:5ILA
39 GF Score
Price €3.98
View Full Analysis

What is Ideal Power Cyclically Adjusted Book per Share?

Ideal Power FRA:5ILA +4.19% 39 Cyclically Adjusted Book per Share is €3.99 as of Jun. 2026. GuruFocus rates FRA:5ILA with a GF Score™ of 39/100.

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.

Ideal Power's adjusted book value per share for the three months ended in Jun. 2026 was €2.245. 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 €3.99 for the trailing ten years ended in Jun. 2026.

During the past 12 months, Ideal Power's average Cyclically Adjusted Book Growth Rate was -28.40% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was -14.60% 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 Ideal Power was -4.20% per year. The lowest was -14.60% per year. And the median was -9.40% per year.

As of today (2026-08-28), Ideal Power's current stock price is €3.98. Ideal Power's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 was €3.99. Ideal Power's Cyclically Adjusted PB Ratio of today is 1.00.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Ideal Power was 1.93. The lowest was 0.51. And the median was 0.96.


Ideal Power  (FRA:5ILA) 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.

Ideal Power's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=3.98/3.99
=1.00

* 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 Ideal Power was 1.93. The lowest was 0.51. And the median was 0.96.


Be Aware

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


Ideal Power Cyclically Adjusted Book per Share Related Terms


Ideal Power Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Ideal Power'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.

Ideal Power Cyclically Adjusted Book per Share Chart

Ideal Power 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 6.14 7.84 8.30 7.02 4.02

Ideal Power 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 5.35 4.93 4.02 3.80 3.99

FRA:5ILA vs NA, PXLW, SQNS: Cyclically Adjusted Book per Share Comparison

For the Semiconductors subindustry, Ideal Power'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.


Ideal Power Cyclically Adjusted PB Ratio vs Semiconductors Industry

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

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


FRA:5ILA
39GF Score
Ideal Power Inc FRA:5ILA
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Ideal Power 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, Ideal Power'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)
=2.245/333.9520*333.9520
=2.245

Current CPI (Jun. 2026) = 333.9520.

Ideal Power Quarterly Data

Book Value per Share CPI Adj_Book
201609 8.994 241.428 12.441
201612 7.180 241.432 9.931
201703 12.169 243.801 16.669
201706 9.616 244.955 13.110
201709 7.936 246.819 10.738
201712 6.988 246.524 9.466
201803 5.627 249.554 7.530
201806 5.153 251.989 6.829
201809 3.909 252.439 5.171
201812 2.880 251.233 3.828
201903 2.122 254.202 2.788
201906 1.431 256.143 1.866
201909 0.976 256.759 1.269
201912 1.667 256.974 2.166
202003 1.325 258.115 1.714
202006 0.973 257.797 1.260
202009 1.258 260.280 1.614
202012 0.964 260.474 1.236
202103 3.940 264.877 4.967
202106 3.738 271.696 4.595
202109 3.663 274.310 4.459
202112 3.627 278.802 4.344
202203 3.472 287.504 4.033
202206 3.384 296.311 3.814
202209 3.361 296.808 3.782
202212 2.853 296.797 3.210
202303 2.518 301.836 2.786
202306 2.228 305.109 2.439
202309 1.926 307.789 2.090
202312 1.538 306.746 1.674
202403 2.706 312.332 2.893
202406 2.593 314.175 2.756
202409 2.237 315.301 2.369
202412 2.046 315.605 2.165
202503 1.720 319.799 1.796
202506 1.300 322.561 1.346
202509 1.008 324.800 1.036
202512 0.788 324.054 0.812
202603 1.272 330.213 1.286
202606 2.245 333.952 2.245

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 €3.99 mean?
Ideal Power (FRA:5ILA) has a Cyclically Adjusted Book per Share of €3.99 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 Ideal Power and its competitors.
Is Ideal Power's Cyclically Adjusted Book per Share too high?
Ideal Power's current Cyclically Adjusted Book per Share is €3.99. Overall, Ideal Power has a GF Score™ of 39/100, reflecting its overall financial health beyond just this single metric.
How does Ideal Power's Cyclically Adjusted Book per Share compare to NA and PXLW?
Ideal Power's Cyclically Adjusted Book per Share of €3.99 can be compared against companies in the Semiconductors 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 Semiconductors company?
A good Cyclically Adjusted Book per Share depends on the Semiconductors 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 Ideal Power and its competitors. Ideal Power's current Cyclically Adjusted Book per Share is €3.99. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Ideal Power stock overvalued right now?
Ideal Power (FRA:5ILA) has a current Cyclically Adjusted Book per Share of €3.99. The current Cyclically Adjusted Book per Share is €3.99. Ideal Power's overall GF Score™ is 39/100. 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 Ideal Power (FRA:5ILA), the current Cyclically Adjusted Book per Share is €3.99 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.

Ideal Power Business Description

Other Exchanges IPWR:USA
Address 5508 Highway 290 West, Suite 120, Austin, TX, USA, 78735
Ideal Power Inc is engaged in the development of its broadly patented bidirectional power switches, creating efficient and ecofriendly energy control solutions for electric vehicles, electric vehicle charging, renewable energy, energy storage, UPS / data center, solid-state circuit breaker and other industrial and military applications. The company is focused on its patented Bidirectional, Bipolar Junction Transistor (B-TRAN) semiconductor technology. B-TRAN is a double-sided bidirectional AC switchable to deliver substantial performance improvements over conventional power semiconductors. The primary raw material used in the fabrication of B-TRAN devices is silicon wafers.
39GF Score

Get the complete analysis for FRA:5ILA

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

€3.98
Price