Zeta (TSE:6031) Cyclically Adjusted Book per Share: 円44.07 (As of Dec. 2025)

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Director of Data and Quant Analytics at GuruFocus
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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:6031 Zeta Inc TSE:6031
55 GF Score
Price 円254.00
GF Value 円251.65
Valuation Fairly Valued
! 2 Warning Signs
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What is Zeta Cyclically Adjusted Book per Share?

Zeta TSE:6031 -0.39% 55 Cyclically Adjusted Book per Share is 円44.07 as of Dec. 2025. GuruFocus rates TSE:6031 with a GF Score™ of 55/100 and a GF Value™ of 円251.65 (Fairly Valued). 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.

Zeta's adjusted book value per share for the three months ended in Dec. 2025 was 円45.041. 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44.07 for the trailing ten years ended in Dec. 2025.

During the past 12 months, Zeta's average Cyclically Adjusted Book Growth Rate was -3.80% 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.

As of today (2026-07-21), Zeta's current stock price is 円254.00. Zeta's Cyclically Adjusted Book per Share for the quarter that ended in Dec. 2025 was 円44.07. Zeta's Cyclically Adjusted PB Ratio of today is 5.76.

During the past 11 years, the highest Cyclically Adjusted PB Ratio of Zeta was 13.12. The lowest was 5.29. And the median was 8.52.


Zeta  (TSE:6031) 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.

Zeta's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=254.00/44.07
=5.76

* 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 11 years, the highest Cyclically Adjusted PB Ratio of Zeta was 13.12. The lowest was 5.29. And the median was 8.52.


Be Aware

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


Zeta Cyclically Adjusted Book per Share Related Terms


Zeta Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Zeta'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.

Zeta Cyclically Adjusted Book per Share Chart

Zeta Annual Data
Trend Jun15 Jun16 Jun17 Jun18 Jun19 Jun20 Jun21 Jun22 Jun23 Jun24
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 44.91

Zeta Quarterly Data
Mar21 Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 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 45.35 44.95 44.29 44.07 0.00

TSE:6031 vs MSFT, ORCL, PLTR: Cyclically Adjusted Book per Share Comparison

For the Software - Infrastructure subindustry, Zeta'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.


Zeta Cyclically Adjusted PB Ratio vs Software Industry

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

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


TSE:6031
55GF Score
Zeta Inc TSE:6031
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Zeta 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, Zeta's adjusted Book Value per Share data for the three months ended in Dec. 2025 was:

Adj_Book= Book Value per Share /CPI of Dec. 2025 (Change)*Current CPI (Dec. 2025)
=45.041/113.0000*113.0000
=45.041

Current CPI (Dec. 2025) = 113.0000.

Zeta Quarterly Data

Book Value per Share CPI Adj_Book
201512 59.098 98.100 68.074
201603 57.285 97.900 66.121
201606 54.225 98.100 62.461
201609 52.449 98.000 60.477
201612 44.915 98.400 51.579
201703 43.079 98.100 49.622
201706 39.895 98.500 45.768
201709 38.619 98.800 44.170
201712 36.649 99.400 41.663
201803 34.896 99.200 39.750
201806 33.836 99.200 38.543
201809 32.351 99.900 36.593
201812 30.819 99.700 34.930
201903 29.216 99.700 33.113
201906 27.878 99.800 31.565
201909 27.326 100.100 30.848
201912 26.902 100.500 30.248
202003 25.780 100.300 29.044
202006 19.852 99.900 22.455
202009 16.031 99.900 18.133
202012 14.840 99.300 16.887
202103 15.746 99.900 17.811
202106 16.606 99.500 18.859
202109 58.313 100.100 65.828
202112 61.380 100.100 69.290
202203 52.649 101.100 58.846
202206 59.714 101.800 66.284
202209 58.408 103.100 64.017
202212 59.764 104.100 64.874
202303 61.821 104.400 66.914
202306 39.048 105.200 41.943
202309 33.399 106.200 35.538
202312 35.694 106.800 37.766
202403 38.402 107.200 40.480
202406 54.136 108.200 56.538
202412 40.521 110.700 41.363
202503 36.113 111.100 36.731
202506 41.556 111.700 42.040
202509 40.147 112.000 40.505
202512 45.041 113.000 45.041

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44.07 mean?
Zeta (TSE:6031) has a Cyclically Adjusted Book per Share of 円44.07 as of Dec. 2025. 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 Zeta and its competitors.
Is Zeta's Cyclically Adjusted Book per Share too high?
Zeta's current Cyclically Adjusted Book per Share is 円44.07. Overall, Zeta has a GF Score™ of 55/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Zeta's Cyclically Adjusted Book per Share compare to MSFT and ORCL?
Zeta's Cyclically Adjusted Book per Share of 円44.07 can be compared against companies in the Software 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 Software company?
A good Cyclically Adjusted Book per Share depends on the Software 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 Zeta and its competitors. Zeta's current Cyclically Adjusted Book per Share is 円44.07. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Zeta stock overvalued right now?
Based on GuruFocus' analysis, Zeta (TSE:6031) is currently considered Fairly Valued. The stock's GF Value™ is 円251.65, compared to a current price of 円254.00 — trading 0.9% above its estimated fair value. The current Cyclically Adjusted Book per Share is 円44.07. Zeta's overall GF Score™ is 55/100 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 Zeta (TSE:6031), the current Cyclically Adjusted Book per Share is 円44.07 as of Dec. 2025. 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 Zeta (TSE:6031) Overvalued in 2026?

Based on GuruFocus' analysis, Zeta stock appears to be overvalued. The current stock price of 円254.00 is trading 0.9% above its estimated GF Value™ of 円251.65. GuruFocus considers Zeta to be Fairly Valued.

Key valuation signals for TSE:6031:

  • Cyclically Adjusted Book per Share: 円44.07
  • GF Value™: 円251.65 vs. price of 円254.00 (0.9% above fair value)
  • GF Score™: 55/100 with 2 warning signs

No single metric tells the full story. See the TSE:6031 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Zeta Business Description

Address 2-11-22 Sangenjaya, Sun Towers Center Building, 17th floor, Setagaya-ku, Tokyo, JPN, 154-0024
Zeta Inc is a commerce and CX company that develops and sells EC curation, hashtags, reviews, EC product search, and OMO solutions.
55GF Score

Get the complete analysis for TSE:6031

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

円254.00
Price
円251.65
GF Value