Planet (TSE:2391) Cyclically Adjusted Book per Share: 円769.87 (As of Jan. 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:2391 Planet Inc TSE:2391
57 GF Score
Price 円1,217.00
GF Value 円934.79
Valuation Modestly Overvalued
! 3 Warning Signs
View Full Analysis

What is Planet Cyclically Adjusted Book per Share?

Planet TSE:2391 57 Cyclically Adjusted Book per Share is 円769.87 as of Jan. 2026. GuruFocus rates TSE:2391 with a GF Score™ of 57/100 and a GF Value™ of 円934.79 (Modestly Overvalued). The stock has 3 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.

Planet's adjusted book value per share for the three months ended in Jan. 2026 was 円848.610. 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769.87 for the trailing ten years ended in Jan. 2026.

During the past 12 months, Planet's average Cyclically Adjusted Book Growth Rate was 5.70% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 7.90% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 8.30% 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 Planet was 9.00% per year. The lowest was 7.50% per year. And the median was 8.00% per year.

As of today (2026-07-14), Planet's current stock price is 円1217.00. Planet's Cyclically Adjusted Book per Share for the quarter that ended in Jan. 2026 was 円769.87. Planet's Cyclically Adjusted PB Ratio of today is 1.58.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Planet was 4.83. The lowest was 1.53. And the median was 2.17.


Planet  (TSE:2391) 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.

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

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=1217.00/769.87
=1.58

* 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 Planet was 4.83. The lowest was 1.53. And the median was 2.17.


Be Aware

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


Planet Cyclically Adjusted Book per Share Related Terms


Planet Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Planet'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.

Planet Cyclically Adjusted Book per Share Chart

Planet Annual Data
Trend Jul16 Jul17 Jul18 Jul19 Jul20 Jul21 Jul22 Jul23 Jul24 Jul25
Cyclically Adjusted Book per Share
Get a 7-Day Free Trial Premium Member Only Premium Member Only 543.77 596.42 652.49 703.76 748.93

Planet Quarterly Data
Apr21 Jul21 Oct21 Jan22 Apr22 Jul22 Oct22 Jan23 Apr23 Jul23 Oct23 Jan24 Apr24 Jul24 Jan25 Apr25 Jul25 Oct25 Jan26 Apr26
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 738.12 748.93 762.19 769.87 0.00

TSE:2391 vs IBM, ACN, FISV: Cyclically Adjusted Book per Share Comparison

For the Information Technology Services subindustry, Planet'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.


Planet Cyclically Adjusted PB Ratio vs Software Industry

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

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


TSE:2391
57GF Score
Planet Inc TSE:2391
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Planet 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, Planet's adjusted Book Value per Share data for the three months ended in Jan. 2026 was:

Adj_Book= Book Value per Share /CPI of Jan. 2026 (Change)*Current CPI (Jan. 2026)
=848.61/112.9000*112.9000
=848.610

Current CPI (Jan. 2026) = 112.9000.

Planet Quarterly Data

Book Value per Share CPI Adj_Book
201601 530.977 97.700 613.585
201604 522.221 98.100 601.007
201607 550.910 97.900 635.319
201610 544.259 98.600 623.193
201701 557.474 98.200 640.925
201704 565.435 98.500 648.098
201707 575.638 98.300 661.135
201710 581.729 98.800 664.749
201801 626.151 99.500 710.477
201804 645.511 99.100 735.401
201807 670.009 99.200 762.540
201810 641.230 100.200 722.504
201901 647.377 99.700 733.088
201904 645.450 100.000 728.713
201907 672.520 99.800 760.797
201910 669.102 100.400 752.407
202001 669.745 100.500 752.380
202004 648.301 100.200 730.471
202007 666.856 100.000 752.880
202010 668.344 99.800 756.073
202101 699.001 99.800 790.754
202104 707.490 99.100 806.010
202107 728.852 99.700 825.350
202110 730.678 99.900 825.761
202201 766.921 100.300 863.264
202204 737.029 101.500 819.809
202207 778.354 102.300 859.005
202210 789.371 103.700 859.402
202301 794.659 104.700 856.896
202304 793.136 105.100 851.999
202307 806.128 105.700 861.039
202310 782.169 107.100 824.527
202401 805.389 106.900 850.593
202404 806.343 107.700 845.275
202407 818.282 108.600 850.682
202501 817.471 111.200 829.968
202504 819.677 111.500 829.969
202507 849.900 111.900 857.495
202510 851.784 112.800 852.539
202601 848.610 112.900 848.610

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769.87 mean?
Planet (TSE:2391) has a Cyclically Adjusted Book per Share of 円769.87 as of Jan. 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 Planet and its competitors.
Is Planet's Cyclically Adjusted Book per Share too high?
Planet's current Cyclically Adjusted Book per Share is 円769.87. Overall, Planet has a GF Score™ of 57/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Planet's Cyclically Adjusted Book per Share compare to IBM and ACN?
Planet's Cyclically Adjusted Book per Share of 円769.87 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 Planet and its competitors. Planet's current Cyclically Adjusted Book per Share is 円769.87. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Planet stock overvalued right now?
Based on GuruFocus' analysis, Planet (TSE:2391) is currently considered Modestly Overvalued. The stock's GF Value™ is 円934.79, compared to a current price of 円1,217.00 — trading 30.2% above its estimated fair value. The current Cyclically Adjusted Book per Share is 円769.87. Planet's overall GF Score™ is 57/100 with 3 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 Planet (TSE:2391), the current Cyclically Adjusted Book per Share is 円769.87 as of Jan. 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 Planet (TSE:2391) Overvalued in 2026?

Based on GuruFocus' analysis, Planet stock appears to be overvalued. The current stock price of 円1,217.00 is trading 30.2% above its estimated GF Value™ of 円934.79. GuruFocus considers Planet to be Modestly Overvalued.

Key valuation signals for TSE:2391:

  • Cyclically Adjusted Book per Share: 円769.87
  • GF Value™: 円934.79 vs. price of 円1,217.00 (30.2% above fair value)
  • GF Score™: 57/100 with 3 warning signs

No single metric tells the full story. See the TSE:2391 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Planet Business Description

Address Bunka Hoso Media Plus Building, Nippon Cultural Broadcasting, 3rd Floor 1-31 Hamamatsucho, Minato-ku, Tokyo, JPN, 105 0013
Planet Inc is engaged in the construction, provision and operation of electronic data interchange (EDI) backbone platform. Services offered by the company include EDI (data exchange), Product database and Buyers' Net. EDI (data exchange) includes electronic data exchange with manufacturers, wholesale businesses and material suppliers such as ordering, shipping, billing/payment. Product database is a service that provides merchandise information registered by manufacturers in the distribution industry from the Internet. Buyers' Net is an information provision service on the Internet that efficiently supports information exchange between manufacturers, wholesale businesses and retailers. It provides information such as product information, industry news and company campaigns.
57GF Score

Get the complete analysis for TSE:2391

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

円1,217.00
Price
円934.79
GF Value