Alsok Co (TSE:2331) Cyclically Adjusted Book per Share: 円596.15 (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.

TSE:2331 Alsok Co Ltd TSE:2331
91 GF Score
Price 円1,102.50
GF Value 円1,173.07
Valuation Fairly Valued
! 4 Warning Signs
View Full Analysis

What is Alsok Co Cyclically Adjusted Book per Share?

Alsok Co TSE:2331 +0.82% 91 Cyclically Adjusted Book per Share is 円596.15 as of Mar. 2026. GuruFocus rates TSE:2331 with a GF Score™ of 91/100 and a GF Value™ of 円1,173.07 (Fairly Valued). 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.

Alsok Co's adjusted book value per share for the three months ended in Mar. 2026 was 円789.415. 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 円596.15 for the trailing ten years ended in Mar. 2026.

During the past 12 months, Alsok Co's average Cyclically Adjusted Book Growth Rate was 7.10% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 8.70% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 9.10% 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 Alsok Co was 9.70% per year. The lowest was 5.10% per year. And the median was 8.25% per year.

As of today (2026-07-14), Alsok Co's current stock price is 円1102.50. Alsok Co's Cyclically Adjusted Book per Share for the quarter that ended in Mar. 2026 was 円596.15. Alsok Co's Cyclically Adjusted PB Ratio of today is 1.85.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Alsok Co was 3.85. The lowest was 1.48. And the median was 2.18.


Alsok Co  (TSE:2331) 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.

Alsok Co's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=1102.50/596.15
=1.85

* 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 Alsok Co was 3.85. The lowest was 1.48. And the median was 2.18.


Be Aware

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


Alsok Co Cyclically Adjusted Book per Share Related Terms


Alsok Co Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Alsok Co'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.

Alsok Co Cyclically Adjusted Book per Share Chart

Alsok Co Annual Data
Trend Mar17 Mar18 Mar19 Mar20 Mar21 Mar22 Mar23 Mar24 Mar25 Mar26
Cyclically Adjusted Book per Share
Get a 7-Day Free Trial Premium Member Only Premium Member Only 422.12 464.16 506.60 556.82 596.15

Alsok Co 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 556.82 566.97 575.94 588.37 596.15

TSE:2331 vs ALLE, MSA, ADT: Cyclically Adjusted Book per Share Comparison

For the Security & Protection Services subindustry, Alsok Co'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.


Alsok Co Cyclically Adjusted PB Ratio vs Business Services Industry

For the Business Services industry and Industrials sector, Alsok Co's Cyclically Adjusted PB Ratio distribution charts can be found below:

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


TSE:2331
91GF Score
Alsok Co Ltd TSE:2331
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Alsok Co 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, Alsok Co'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)
=789.415/112.7000*112.7000
=789.415

Current CPI (Mar. 2026) = 112.7000.

Alsok Co Quarterly Data

Book Value per Share CPI Adj_Book
201606 360.524 98.100 414.180
201609 370.776 98.000 426.392
201612 378.943 98.400 434.013
201703 391.248 98.100 449.477
201706 394.481 98.500 451.350
201709 404.870 98.800 461.830
201712 418.180 99.400 474.134
201803 431.146 99.200 489.820
201806 432.376 99.200 491.217
201809 444.078 99.900 500.977
201812 446.152 99.700 504.326
201903 460.473 99.700 520.515
201906 461.850 99.800 521.548
201909 474.869 100.100 534.643
201912 482.027 100.500 540.542
202003 485.005 100.300 544.966
202006 488.644 99.900 551.253
202009 500.399 99.900 564.514
202012 506.691 99.300 575.066
202103 548.253 99.900 618.500
202106 552.672 99.500 625.991
202109 573.118 100.100 645.259
202112 579.124 100.100 652.021
202203 592.968 101.100 661.004
202206 594.220 101.800 657.845
202209 604.912 103.100 661.237
202212 608.124 104.100 658.363
202303 622.102 104.400 671.560
202306 627.600 105.200 672.343
202309 639.027 106.200 678.139
202312 643.176 106.800 678.707
202403 687.333 107.200 722.597
202406 695.442 108.200 724.365
202409 699.488 108.900 723.896
202412 685.104 110.700 697.482
202503 697.961 111.100 708.013
202506 698.053 111.700 704.302
202509 717.765 112.000 722.251
202512 723.877 113.000 721.955
202603 789.415 112.700 789.415

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 円596.15 mean?
Alsok Co (TSE:2331) has a Cyclically Adjusted Book per Share of 円596.15 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 Alsok Co and its competitors.
Is Alsok Co's Cyclically Adjusted Book per Share too high?
Alsok Co's current Cyclically Adjusted Book per Share is 円596.15. Overall, Alsok Co has a GF Score™ of 91/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Alsok Co's Cyclically Adjusted Book per Share compare to ALLE and MSA?
Alsok Co's Cyclically Adjusted Book per Share of 円596.15 can be compared against companies in the Business Services 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 Business Services company?
A good Cyclically Adjusted Book per Share depends on the Business Services 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 Alsok Co and its competitors. Alsok Co's current Cyclically Adjusted Book per Share is 円596.15. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Alsok Co stock overvalued right now?
Based on GuruFocus' analysis, Alsok Co (TSE:2331) is currently considered Fairly Valued. The stock's GF Value™ is 円1,173.07, compared to a current price of 円1,102.50 — trading 6% below its estimated fair value. The current Cyclically Adjusted Book per Share is 円596.15. Alsok Co's overall GF Score™ is 91/100 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 Alsok Co (TSE:2331), the current Cyclically Adjusted Book per Share is 円596.15 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 Alsok Co (TSE:2331) Overvalued in 2026?

Based on GuruFocus' analysis, Alsok Co stock appears to be undervalued. The current stock price of 円1,102.50 is trading 6% below its estimated GF Value™ of 円1,173.07. GuruFocus considers Alsok Co to be Fairly Valued.

Key valuation signals for TSE:2331:

  • Cyclically Adjusted Book per Share: 円596.15
  • GF Value™: 円1,173.07 vs. price of 円1,102.50 (6% below fair value)
  • GF Score™: 91/100 with 4 warning signs

No single metric tells the full story. See the TSE:2331 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Alsok Co Business Description

Address 1-6-6 Motoakasaka, Minato-ku, Tokyo, JPN, 107-8511
Alsok Co Ltd is a Japanese security services provider. The services and products offered include home security systems, personal security for senior citizens, children and women, life support such as housework contracting, listening-device inspection and long-term care, online security systems for corporations, electronic security systems with monitoring capabilities, ATM management systems, damage insurance, and housing complexes security services.
91GF Score

Get the complete analysis for TSE:2331

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

円1,102.50
Price
円1,173.07
GF Value