Plug Power (XSWX:PLUG) Cyclically Adjusted Book per Share: CHF2.49 (As of Mar. 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.

XSWX:PLUG Plug Power Inc XSWX:PLUG
42 GF Score
Price CHF1.83
GF Value CHF1.25
! 6 Warning Signs
View Full Analysis

What is Plug Power Cyclically Adjusted Book per Share?

Plug Power XSWX:PLUG -5.88% 42 Cyclically Adjusted Book per Share is CHF2.49 as of Mar. 2026. GuruFocus rates XSWX:PLUG with a GF Score™ of 42/100 and a GF Value™ of CHF1.25. The stock has 6 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.

Plug Power's adjusted book value per share for the three months ended in Mar. 2026 was CHF0.423. 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 CHF2.49 for the trailing ten years ended in Mar. 2026.

During the past 12 months, Plug Power's average Cyclically Adjusted Book Growth Rate was 3.20% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 14.70% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 34.10% per year. During the past 10 years, the average Cyclically Adjusted Book Growth Rate was -9.60% 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 Plug Power was 58.00% per year. The lowest was -47.90% per year. And the median was -12.40% per year.

As of today (2026-07-13), Plug Power's current stock price is CHF1.8342. Plug Power's Cyclically Adjusted Book per Share for the quarter that ended in Mar. 2026 was CHF2.49. Plug Power's Cyclically Adjusted PB Ratio of today is 0.74.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Plug Power was 95.53. The lowest was 0.12. And the median was 1.20.


Plug Power  (XSWX:PLUG) 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.

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

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=1.8342/2.49
=0.74

* 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 Plug Power was 95.53. The lowest was 0.12. And the median was 1.20.


Be Aware

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


Plug Power Cyclically Adjusted Book per Share Related Terms


Plug Power Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Plug 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.

Plug Power Cyclically Adjusted Book per Share Chart

Plug 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 0.00 0.00 0.00 0.00 0.00

Plug Power Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
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 0.00 0.00 0.00 0.00 2.49

XSWX:PLUG vs HAYW, ATKR, TE: Cyclically Adjusted Book per Share Comparison

For the Electrical Equipment & Parts subindustry, Plug 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.


Plug Power Cyclically Adjusted PB Ratio vs Industrial Products Industry

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

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


XSWX:PLUG
42GF Score
Plug Power Inc XSWX:PLUG
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Plug 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, Plug Power's adjusted Book Value per Share data for the three months ended in Mar. 2026 was:

Adj_Book= Book Value per Share /CPI of Mar. 2026 (Change)*Current CPI (Mar. 2026)
=0.423/330.2130*330.2130
=0.423

Current CPI (Mar. 2026) = 330.2130.

Plug Power Quarterly Data

Book Value per Share CPI Adj_Book
201606 0.563 241.018 0.771
201609 0.505 241.428 0.691
201612 0.454 241.432 0.621
201703 0.318 243.801 0.431
201706 0.423 244.955 0.570
201709 0.367 246.819 0.491
201712 0.318 246.524 0.426
201803 0.219 249.554 0.290
201806 0.121 251.989 0.159
201809 0.064 252.439 0.084
201812 0.012 251.233 0.016
201903 -0.005 254.202 -0.006
201906 -0.045 256.143 -0.058
201909 -0.060 256.759 -0.077
201912 0.760 256.974 0.977
202003 0.326 258.115 0.417
202006 0.686 257.797 0.879
202009 1.396 260.280 1.771
202012 1.137 260.474 1.441
202103 8.075 264.877 10.067
202106 7.681 271.696 9.335
202109 7.540 274.310 9.077
202112 7.343 278.802 8.697
202203 7.197 287.504 8.266
202206 7.276 296.311 8.108
202209 7.078 296.808 7.875
202212 6.407 296.797 7.128
202303 6.113 301.836 6.688
202306 5.594 305.109 6.054
202309 5.215 307.789 5.595
202312 4.135 306.746 4.451
202403 3.792 312.332 4.009
202406 3.391 314.175 3.564
202409 2.915 315.301 3.053
202412 1.692 315.605 1.770
202503 1.679 319.799 1.734
202506 1.192 322.561 1.220
202509 0.939 324.800 0.955
202512 0.559 324.054 0.570
202603 0.423 330.213 0.423

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 CHF2.49 mean?
Plug Power (XSWX:PLUG) has a Cyclically Adjusted Book per Share of CHF2.49 as of Mar. 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 Plug Power and its competitors.
Is Plug Power's Cyclically Adjusted Book per Share too high?
Plug Power's current Cyclically Adjusted Book per Share is CHF2.49. Overall, Plug Power has a GF Score™ of 42/100, reflecting its overall financial health beyond just this single metric.
How does Plug Power's Cyclically Adjusted Book per Share compare to HAYW and ATKR?
Plug Power's Cyclically Adjusted Book per Share of CHF2.49 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 Plug Power and its competitors. Plug Power's current Cyclically Adjusted Book per Share is CHF2.49. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Plug Power stock overvalued right now?
Plug Power (XSWX:PLUG) has a current Cyclically Adjusted Book per Share of CHF2.49. The stock's GF Value™ is CHF1.25, compared to a current price of CHF1.83 — trading 46.7% above its estimated fair value. The current Cyclically Adjusted Book per Share is CHF2.49. Plug Power's overall GF Score™ is 42/100 with 6 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 Plug Power (XSWX:PLUG), the current Cyclically Adjusted Book per Share is CHF2.49 as of Mar. 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 Plug Power (XSWX:PLUG) Overvalued in 2026?

Based on GuruFocus' analysis, Plug Power stock appears to be overvalued. The current stock price of CHF1.83 is trading 46.7% above its estimated GF Value™ of CHF1.25.

Key valuation signals for XSWX:PLUG:

  • Cyclically Adjusted Book per Share: CHF2.49
  • GF Value™: CHF1.25 vs. price of CHF1.83 (46.7% above fair value)
  • GF Score™: 42/100 with 6 warning signs

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


Plug Power Business Description

Address 125 Vista Boulevard, Slingerlands, NY, USA, 12159
Plug Power Inc is building an end-to-end green hydrogen ecosystem, from production, storage, and delivery to energy generation. The company plans to build and operate green hydrogen highways across North America and Europe. Plug will deliver its green hydrogen solutions directly to its customers and through joint venture partners into multiple end markets, including material handling, e-mobility, power generation, and industrial applications.
42GF Score

Get the complete analysis for XSWX:PLUG

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

CHF1.83
Price
CHF1.25
GF Value