First Solar (WBO:FSLR) Cyclically Adjusted Book per Share: €58.33 (As of Mar. 2026)


WBO:FSLR First Solar Inc WBO:FSLR
26 GF Score
Price €199.00
GF Value €236.25
Valuation Modestly Undervalued
! 4 Warning Signs
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What is First Solar Cyclically Adjusted Book per Share?

First Solar WBO:FSLR -3.63% 26 Cyclically Adjusted Book per Share is €58.33 as of Mar. 2026. GuruFocus rates WBO:FSLR with a GF Score™ of 26/100 and a GF Value™ of €236.25 (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.

First Solar's adjusted book value per share for the three months ended in Mar. 2026 was €79.523. 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 €58.33 for the trailing ten years ended in Mar. 2026.

During the past 12 months, First Solar's average Cyclically Adjusted Book Growth Rate was 5.30% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 4.00% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 5.20% per year. During the past 10 years, the average Cyclically Adjusted Book Growth Rate was 6.50% 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 First Solar was 11.50% per year. The lowest was 4.00% per year. And the median was 5.95% per year.

As of today (2026-07-03), First Solar's current stock price is €199.00. First Solar's Cyclically Adjusted Book per Share for the quarter that ended in Mar. 2026 was €58.33. First Solar's Cyclically Adjusted PB Ratio of today is 3.41.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of First Solar was 4.47. The lowest was 0.66. And the median was 1.60.


First Solar  (WBO:FSLR) 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.

First Solar's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=199.00/58.33
=3.41

* 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 First Solar was 4.47. The lowest was 0.66. And the median was 1.60.


Be Aware

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


First Solar Cyclically Adjusted Book per Share Related Terms


First Solar Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for First Solar'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.

First Solar Cyclically Adjusted Book per Share Chart

First Solar 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 49.11 55.23 56.23 63.22 58.62

First Solar 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 59.24 56.10 56.61 58.62 58.33

WBO:FSLR vs NXT, ENPH, RUN: Cyclically Adjusted Book per Share Comparison

For the Solar subindustry, First Solar'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.


First Solar Cyclically Adjusted PB Ratio vs Semiconductors Industry

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

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


WBO:FSLR
26GF Score
First Solar Inc WBO:FSLR
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

First Solar 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, First Solar'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)
=79.523/330.2130*330.2130
=79.523

Current CPI (Mar. 2026) = 330.2130.

First Solar Quarterly Data

Book Value per Share CPI Adj_Book
201606 50.475 241.018 69.155
201609 50.982 241.428 69.731
201612 47.551 241.432 65.037
201703 46.869 243.801 63.481
201706 45.110 244.955 60.811
201709 44.286 246.819 59.249
201712 41.241 246.524 55.241
201803 39.940 249.554 52.849
201806 41.746 251.989 54.705
201809 42.280 252.439 55.306
201812 43.683 251.233 57.416
201903 43.087 254.202 55.971
201906 43.122 256.143 55.592
201909 44.644 256.759 57.416
201912 43.501 256.974 55.899
202003 44.167 258.115 56.504
202006 43.803 257.797 56.107
202009 43.230 260.280 54.845
202012 42.821 260.474 54.286
202103 44.996 264.877 56.095
202106 45.151 271.696 54.875
202109 46.607 274.310 56.105
202112 49.601 278.802 58.747
202203 50.052 287.504 57.487
202206 52.324 296.311 58.311
202209 55.218 296.808 61.433
202212 51.677 296.797 57.495
202303 51.312 301.836 56.136
202306 52.181 305.109 56.474
202309 55.271 307.789 59.298
202312 57.394 306.746 61.785
202403 59.326 312.332 62.722
202406 62.966 314.175 66.180
202409 63.908 315.301 66.930
202412 71.162 315.605 74.456
202503 70.617 319.799 72.917
202506 69.088 322.561 70.727
202509 71.579 324.800 72.772
202512 75.906 324.054 77.349
202603 79.523 330.213 79.523

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 €58.33 mean?
First Solar (WBO:FSLR) has a Cyclically Adjusted Book per Share of €58.33 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 First Solar and its competitors.
Is First Solar's Cyclically Adjusted Book per Share too high?
First Solar's current Cyclically Adjusted Book per Share is €58.33. Overall, First Solar has a GF Score™ of 26/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does First Solar's Cyclically Adjusted Book per Share compare to NXT and ENPH?
First Solar's Cyclically Adjusted Book per Share of €58.33 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 First Solar and its competitors. First Solar's current Cyclically Adjusted Book per Share is €58.33. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is First Solar stock overvalued right now?
Based on GuruFocus' analysis, First Solar (WBO:FSLR) is currently considered Modestly Undervalued. The stock's GF Value™ is €236.25, compared to a current price of €199.00 — trading 15.8% below its estimated fair value. The current Cyclically Adjusted Book per Share is €58.33. First Solar's overall GF Score™ is 26/100 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 First Solar (WBO:FSLR), the current Cyclically Adjusted Book per Share is €58.33 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 First Solar (WBO:FSLR) Overvalued in 2026?

Based on GuruFocus' analysis, First Solar stock appears to be undervalued. The current stock price of €199.00 is trading 15.8% below its estimated GF Value™ of €236.25. GuruFocus considers First Solar to be Modestly Undervalued.

Key valuation signals for WBO:FSLR:

  • Cyclically Adjusted Book per Share: €58.33
  • GF Value™: €236.25 vs. price of €199.00 (15.8% below fair value)
  • GF Score™: 26/100 with 4 warning signs

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


First Solar Business Description

Address 4300 East Camelback Road, Suite 220, Phoenix, AZ, USA, 85018
First Solar designs and manufactures solar photovoltaic panels, modules, and systems for use in utility-scale development projects. The company's solar modules use cadmium telluride to convert sunlight into electricity. This is commonly called thin-film technology. First Solar is the world's largest thin-film solar module manufacturer. It has production lines in Vietnam, Malaysia, the United States, and India.
26GF Score

Get the complete analysis for WBO:FSLR

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

€199.00
Price
€236.25
GF Value