FuelCell Energy (XBUL:FEY) Cyclically Adjusted Book per Share: лв98.50 (As of Jul. 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.

XBUL:FEY FuelCell Energy Inc XBUL:FEY
58 GF Score
Price лв9.44
GF Value лв4.26
! 7 Warning Signs
View Full Analysis

What is FuelCell Energy Cyclically Adjusted Book per Share?

FuelCell Energy XBUL:FEY 58 Cyclically Adjusted Book per Share is лв98.50 as of Jul. 2026. GuruFocus rates XBUL:FEY with a GF Score™ of 58/100 and a GF Value™ of лв4.26. The stock has 7 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.

FuelCell Energy's adjusted book value per share for the three months ended in Jul. 2026 was лв20.689. 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 лв98.50 for the trailing ten years ended in Jul. 2026.

During the past 12 months, FuelCell Energy's average Cyclically Adjusted Book Growth Rate was -100.00% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was -17.10% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was -6.90% per year. During the past 10 years, the average Cyclically Adjusted Book Growth Rate was -16.40% 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 FuelCell Energy was 22.90% per year. The lowest was -41.10% per year. And the median was -6.40% per year.

As of today (2026-09-04), FuelCell Energy's current stock price is лв9.438. FuelCell Energy's Cyclically Adjusted Book per Share for the quarter that ended in Jul. 2026 was лв98.50. FuelCell Energy's Cyclically Adjusted PB Ratio of today is 0.10.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of FuelCell Energy was 1.51. The lowest was 0.01. And the median was 0.15.


FuelCell Energy  (XBUL:FEY) 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.

FuelCell Energy's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=9.438/98.50
=0.10

* 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 FuelCell Energy was 1.51. The lowest was 0.01. And the median was 0.15.


Be Aware

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


FuelCell Energy Cyclically Adjusted Book per Share Related Terms


FuelCell Energy Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for FuelCell Energy'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.

FuelCell Energy Cyclically Adjusted Book per Share Chart

FuelCell Energy Annual Data
Trend Oct16 Oct17 Oct18 Oct19 Oct20 Oct21 Oct22 Oct23 Oct24 Oct25
Cyclically Adjusted Book per Share
Get a 7-Day Free Trial Premium Member Only Premium Member Only 0.00 0.00 0.00 476.77 362.73

FuelCell Energy Quarterly Data
Oct21 Jan22 Apr22 Jul22 Oct22 Jan23 Apr23 Jul23 Oct23 Jan24 Apr24 Jul24 Oct24 Jan25 Apr25 Jul25 Oct25 Jan26 Apr26 Jul26
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 735.84 362.73 348.23 196.97 98.50

XBUL:FEY vs TE, AMPX, ENR: Cyclically Adjusted Book per Share Comparison

For the Electrical Equipment & Parts subindustry, FuelCell Energy'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.


FuelCell Energy Cyclically Adjusted PB Ratio vs Industrial Products Industry

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

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


XBUL:FEY
58GF Score
FuelCell Energy Inc XBUL:FEY
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

FuelCell Energy 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, FuelCell Energy's adjusted Book Value per Share data for the three months ended in Jul. 2026 was:

Adj_Book= Book Value per Share /CPI of Jul. 2026 (Change)*Current CPI (Jul. 2026)
=20.689/333.9180*333.9180
=20.689

Current CPI (Jul. 2026) = 333.9180.

FuelCell Energy Quarterly Data

Book Value per Share CPI Adj_Book
201610 1,980.184 241.729 2,735.373
201701 1,545.483 242.839 2,125.131
201704 1,291.583 244.524 1,763.765
201707 1,001.893 244.786 1,366.704
201710 889.984 246.663 1,204.808
201801 840.833 247.867 1,132.742
201804 735.267 250.546 979.935
201807 632.875 252.006 838.585
201810 524.177 252.885 692.141
201901 331.688 251.712 440.013
201904 185.390 255.548 242.244
201907 36.491 256.571 47.492
201910 19.907 257.346 25.830
202001 15.580 257.971 20.167
202004 11.892 256.389 15.488
202007 20.757 259.101 26.751
202010 33.594 260.388 43.080
202101 51.695 261.582 65.990
202104 48.768 267.054 60.978
202107 92.516 273.003 113.159
202110 89.175 276.589 107.658
202201 83.581 281.148 99.269
202204 90.971 289.109 105.071
202207 89.026 296.276 100.337
202210 85.878 298.012 96.225
202301 83.766 299.170 93.495
202304 79.877 303.363 87.922
202307 80.069 305.691 87.462
202310 77.076 307.671 83.651
202401 74.776 308.417 80.959
202404 71.030 313.548 75.645
202407 62.095 314.540 65.921
202410 54.691 315.664 57.854
202501 50.963 317.671 53.569
202504 45.372 320.795 47.228
202507 31.826 323.048 32.897
202510 24.380 0.000
202601 22.406 325.252 23.003
202604 19.204 333.020 19.256
202607 20.689 333.918 20.689

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 лв98.50 mean?
FuelCell Energy (XBUL:FEY) has a Cyclically Adjusted Book per Share of лв98.50 as of Jul. 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 FuelCell Energy and its competitors.
Is FuelCell Energy's Cyclically Adjusted Book per Share too high?
FuelCell Energy's current Cyclically Adjusted Book per Share is лв98.50. Overall, FuelCell Energy has a GF Score™ of 58/100, reflecting its overall financial health beyond just this single metric.
How does FuelCell Energy's Cyclically Adjusted Book per Share compare to TE and AMPX?
FuelCell Energy's Cyclically Adjusted Book per Share of лв98.50 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 FuelCell Energy and its competitors. FuelCell Energy's current Cyclically Adjusted Book per Share is лв98.50. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is FuelCell Energy stock overvalued right now?
FuelCell Energy (XBUL:FEY) has a current Cyclically Adjusted Book per Share of лв98.50. The stock's GF Value™ is лв4.26, compared to a current price of лв9.44 — trading 121.5% above its estimated fair value. The current Cyclically Adjusted Book per Share is лв98.50. FuelCell Energy's overall GF Score™ is 58/100 with 7 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 FuelCell Energy (XBUL:FEY), the current Cyclically Adjusted Book per Share is лв98.50 as of Jul. 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 FuelCell Energy (XBUL:FEY) Overvalued in 2026?

Based on GuruFocus' analysis, FuelCell Energy stock appears to be overvalued. The current stock price of лв9.44 is trading 121.5% above its estimated GF Value™ of лв4.26.

Key valuation signals for XBUL:FEY:

  • Cyclically Adjusted Book per Share: лв98.50
  • GF Value™: лв4.26 vs. price of лв9.44 (121.5% above fair value)
  • GF Score™: 58/100 with 7 warning signs

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


FuelCell Energy Business Description

Address 3 Great Pasture Road, Danbury, CT, USA, 06810
FuelCell Energy Inc is a clean energy technology company engaged in the development, design, production, and servicing of high temperature fuel cells for clean electric power generation. The Company provides proprietary molten carbonate fuel cell systems that generate electricity electrochemically with ultra low emissions and high efficiency, and operates as a solutions provider managing the design, manufacturing, installation, and maintenance of its systems under long term power purchase, service, and engineering procurement agreements. The Company serves utilities, data centers, and commercial and industrial customers, and operates in the United States, South Korea, Europe, and Canada, with maximum revenue generated from the United States.
58GF Score

Get the complete analysis for XBUL:FEY

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

лв9.44
Price
лв4.26
GF Value