Kaiser Aluminum (STU:KLU1) Cyclically Adjusted Book per Share: €47.26 (As of Jun. 2026)

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STU:KLU1 Kaiser Aluminum Corp STU:KLU1
71 GF Score
Price €128.00
GF Value €87.36
Valuation Significantly Overvalued
! 2 Warning Signs
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What is Kaiser Aluminum Cyclically Adjusted Book per Share?

Kaiser Aluminum STU:KLU1 -3.76% 71 Cyclically Adjusted Book per Share is €47.26 as of Jun. 2026. GuruFocus rates STU:KLU1 with a GF Score™ of 71/100 and a GF Value™ of €87.36 (Significantly Overvalued). The stock has 2 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.

Kaiser Aluminum's adjusted book value per share for the three months ended in Jun. 2026 was €50.108. 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 €47.26 for the trailing ten years ended in Jun. 2026.

During the past 12 months, Kaiser Aluminum's average Cyclically Adjusted Book Growth Rate was 2.10% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was -2.10% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was -0.60% per year. During the past 10 years, the average Cyclically Adjusted Book Growth Rate was 1.80% 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 Kaiser Aluminum was 91.80% per year. The lowest was -89.10% per year. And the median was 2.20% per year.

As of today (2026-08-21), Kaiser Aluminum's current stock price is €128.00. Kaiser Aluminum's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 was €47.26. Kaiser Aluminum's Cyclically Adjusted PB Ratio of today is 2.71.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Kaiser Aluminum was 3.54. The lowest was 0.95. And the median was 1.70.


Kaiser Aluminum  (STU:KLU1) 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.

Kaiser Aluminum's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=128.00/47.26
=2.71

* 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 Kaiser Aluminum was 3.54. The lowest was 0.95. And the median was 1.70.


Be Aware

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


Kaiser Aluminum Cyclically Adjusted Book per Share Related Terms


Kaiser Aluminum Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Kaiser Aluminum'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.

Kaiser Aluminum Cyclically Adjusted Book per Share Chart

Kaiser Aluminum 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 49.34 53.25 50.85 49.50 45.96

Kaiser Aluminum 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 44.99 44.61 45.96 46.50 47.26

STU:KLU1 vs CSTM, CENX, AA: Cyclically Adjusted Book per Share Comparison

For the Aluminum subindustry, Kaiser Aluminum'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.


Kaiser Aluminum Cyclically Adjusted PB Ratio vs Metals & Mining Industry

For the Metals & Mining industry and Basic Materials sector, Kaiser Aluminum's Cyclically Adjusted PB Ratio distribution charts can be found below:

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


STU:KLU1
71GF Score
Kaiser Aluminum Corp STU:KLU1
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Kaiser Aluminum 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, Kaiser Aluminum'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)
=50.108/333.9520*333.9520
=50.108

Current CPI (Jun. 2026) = 333.9520.

Kaiser Aluminum Quarterly Data

Book Value per Share CPI Adj_Book
201609 40.471 241.428 55.981
201612 43.219 241.432 59.781
201703 43.204 243.801 59.180
201706 40.430 244.955 55.119
201709 38.890 246.819 52.619
201712 37.595 246.524 50.928
201803 36.416 249.554 48.732
201806 39.087 251.989 51.801
201809 39.491 252.439 52.243
201812 40.087 251.233 53.286
201903 41.022 254.202 53.892
201906 41.205 256.143 53.722
201909 42.907 256.759 55.807
201912 41.625 256.974 54.094
202003 41.330 258.115 53.473
202006 40.368 257.797 52.293
202009 38.622 260.280 49.554
202012 38.074 260.474 48.814
202103 38.958 264.877 49.118
202106 37.716 271.696 46.358
202109 38.634 274.310 47.034
202112 38.630 278.802 46.271
202203 40.433 287.504 46.965
202206 38.620 296.311 43.526
202209 40.676 296.808 45.766
202212 37.379 296.797 42.058
202303 37.164 301.836 41.118
202306 36.780 305.109 40.257
202309 37.488 307.789 40.675
202312 37.342 306.746 40.654
202403 38.098 312.332 40.735
202406 38.230 314.175 40.637
202409 37.355 315.301 39.565
202412 44.089 315.605 46.652
202503 43.335 319.799 45.253
202506 41.587 322.561 43.056
202509 42.379 324.800 43.573
202512 43.522 324.054 44.851
202603 46.442 330.213 46.968
202606 50.108 333.952 50.108

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 €47.26 mean?
Kaiser Aluminum (STU:KLU1) has a Cyclically Adjusted Book per Share of €47.26 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 Kaiser Aluminum and its competitors.
Is Kaiser Aluminum's Cyclically Adjusted Book per Share too high?
Kaiser Aluminum's current Cyclically Adjusted Book per Share is €47.26. Overall, Kaiser Aluminum has a GF Score™ of 71/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Kaiser Aluminum's Cyclically Adjusted Book per Share compare to CSTM and CENX?
Kaiser Aluminum's Cyclically Adjusted Book per Share of €47.26 can be compared against companies in the Metals & Mining 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 Metals & Mining company?
A good Cyclically Adjusted Book per Share depends on the Metals & Mining 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 Kaiser Aluminum and its competitors. Kaiser Aluminum's current Cyclically Adjusted Book per Share is €47.26. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Kaiser Aluminum stock overvalued right now?
Based on GuruFocus' analysis, Kaiser Aluminum (STU:KLU1) is currently considered Significantly Overvalued. The stock's GF Value™ is €87.36, compared to a current price of €128.00 — trading 46.5% above its estimated fair value. The current Cyclically Adjusted Book per Share is €47.26. Kaiser Aluminum's overall GF Score™ is 71/100 with 2 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 Kaiser Aluminum (STU:KLU1), the current Cyclically Adjusted Book per Share is €47.26 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 Kaiser Aluminum (STU:KLU1) Overvalued in 2026?

Based on GuruFocus' analysis, Kaiser Aluminum stock appears to be overvalued. The current stock price of €128.00 is trading 46.5% above its estimated GF Value™ of €87.36. GuruFocus considers Kaiser Aluminum to be Significantly Overvalued.

Key valuation signals for STU:KLU1:

  • Cyclically Adjusted Book per Share: €47.26
  • GF Value™: €87.36 vs. price of €128.00 (46.5% above fair value)
  • GF Score™: 71/100 with 2 warning signs

No single metric tells the full story. See the STU:KLU1 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Kaiser Aluminum Business Description

Other Exchanges KALU:USA
Address 1550 West McEwen Drive, Suite 500, Franklin, TN, USA, 37067
Kaiser Aluminum Corp specializes in the production of semi-fabricated specialty aluminum mill products, such as aluminum plate and sheet, bare and coated coil and extruded and drawn products, for the end market applications: Aero/HS Products; Packaging; GE Products; and Automotive Extrusions. Its products include fabricated aluminum mill products such as flat-rolled (plate, sheet, and coil), extruded (rod, bar, hollows, and shapes), drawn (rod, bar, pipe, tube and wire) and certain cast aluminum products. Geographically, the company generates majority of its revenue from the United States.
71GF Score

Get the complete analysis for STU:KLU1

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

€128.00
Price
€87.36
GF Value