RKUNY (Rakuten Group) Cyclically Adjusted Book per Share: $ (As of Jun. 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.

RKUNY Rakuten Group Inc RKUNY
71 GF Score
Price $4.57
GF Value $5.73
Valuation Modestly Undervalued
! 5 Warning Signs
View Full Analysis

What is Rakuten Group Cyclically Adjusted Book per Share?

Rakuten Group RKUNY +1.33% 71 Cyclically Adjusted Book per Share is $ as of Jun. 2026. GuruFocus rates RKUNY with a GF Score™ of 71/100 and a GF Value™ of $5.73 (Modestly Undervalued). The stock has 5 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.

Rakuten Group's adjusted book value per share for the three months ended in Jun. 2026 was $3.719. 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 $ for the trailing ten years ended in Jun. 2026.

During the past 12 months, Rakuten Group's average Cyclically Adjusted Book Growth Rate was -0.10% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 4.20% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was -9.70% 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 Rakuten Group was 5.20% per year. The lowest was -16.20% per year. And the median was -5.40% per year.

As of today (2026-09-22), Rakuten Group's current stock price is $4.57. Rakuten Group's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 was $. Rakuten Group's Cyclically Adjusted PB Ratio of today is .

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Rakuten Group was 1.90. The lowest was 0.65. And the median was 1.32.


Rakuten Group  (OTCPK:RKUNY) 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.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Rakuten Group was 1.90. The lowest was 0.65. And the median was 1.32.


Be Aware

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


Rakuten Group Cyclically Adjusted Book per Share Related Terms


Rakuten Group Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Rakuten Group'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.

Rakuten Group Cyclically Adjusted Book per Share Chart

Rakuten Group 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 - - - - -

Rakuten Group 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 - - - - -

RKUNY vs AMZN, BABA, PDD: Cyclically Adjusted Book per Share Comparison

For the Internet Retail subindustry, Rakuten Group'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.


Rakuten Group Cyclically Adjusted PB Ratio vs Retail - Cyclical Industry

For the Retail - Cyclical industry and Consumer Cyclical sector, Rakuten Group's Cyclically Adjusted PB Ratio distribution charts can be found below:

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


RKUNY
71GF Score
Rakuten Group Inc RKUNY
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Rakuten Group 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, Rakuten Group'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)
=3.719/113.6000*113.6000
=3.719

Current CPI (Jun. 2026) = 113.6000.

Rakuten Group Quarterly Data

Book Value per Share CPI Adj_Book
201609 4.300 98.000 4.984
201612 4.102 98.400 4.736
201703 4.197 98.100 4.860
201706 4.186 98.500 4.828
201709 4.267 98.800 4.906
201712 4.505 99.400 5.149
201803 4.366 99.200 5.000
201806 4.674 99.200 5.352
201809 5.034 99.900 5.724
201812 5.233 99.700 5.963
201903 5.853 99.700 6.669
201906 5.946 99.800 6.768
201909 5.167 100.100 5.864
201912 5.002 100.500 5.654
202003 4.668 100.300 5.287
202006 4.934 99.900 5.611
202009 4.728 99.900 5.376
202012 4.472 99.300 5.116
202103 5.071 99.900 5.766
202106 6.662 99.500 7.606
202109 6.472 100.100 7.345
202112 6.134 100.100 6.961
202203 5.485 101.100 6.163
202206 4.854 101.800 5.417
202209 4.399 103.100 4.847
202212 4.044 104.100 4.413
202303 3.678 104.400 4.002
202306 3.793 105.200 4.096
202309 3.542 106.200 3.789
202312 3.602 106.800 3.831
202403 3.426 107.200 3.631
202406 3.263 108.200 3.426
202409 3.154 108.900 3.290
202412 3.658 110.700 3.754
202503 3.522 111.100 3.601
202506 3.640 111.700 3.702
202509 3.623 112.000 3.675
202512 3.981 113.000 4.002
202603 3.692 112.700 3.721
202606 3.719 113.600 3.719

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 $ mean?
Rakuten Group (RKUNY) has a Cyclically Adjusted Book per Share of $ 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 Rakuten Group and its competitors.
Is Rakuten Group's Cyclically Adjusted Book per Share too high?
Rakuten Group's current Cyclically Adjusted Book per Share is $. Overall, Rakuten Group has a GF Score™ of 71/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Rakuten Group's Cyclically Adjusted Book per Share compare to AMZN and BABA?
Rakuten Group's Cyclically Adjusted Book per Share of $ can be compared against companies in the Retail - Cyclical 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 Retail - Cyclical company?
A good Cyclically Adjusted Book per Share depends on the Retail - Cyclical 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 Rakuten Group and its competitors. Rakuten Group's current Cyclically Adjusted Book per Share is $. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Rakuten Group stock overvalued right now?
Based on GuruFocus' analysis, Rakuten Group (RKUNY) is currently considered Modestly Undervalued. The stock's GF Value™ is $5.73, compared to a current price of $4.57 — trading 20.2% below its estimated fair value. The current Cyclically Adjusted Book per Share is $. Rakuten Group's overall GF Score™ is 71/100 with 5 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 Rakuten Group (RKUNY), the current Cyclically Adjusted Book per Share is $ 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 Rakuten Group (RKUNY) Overvalued in 2026?

Based on GuruFocus' analysis, Rakuten Group stock appears to be undervalued. The current stock price of $4.57 is trading 20.2% below its estimated GF Value™ of $5.73. GuruFocus considers Rakuten Group to be Modestly Undervalued.

Key valuation signals for RKUNY:

  • Cyclically Adjusted Book per Share: $
  • GF Value™: $5.73 vs. price of $4.57 (20.2% below fair value)
  • GF Score™: 71/100 with 5 warning signs

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


Rakuten Group Business Description

Address 1-14-1 Tamagawa, Rakuten Crimson House, Setagaya-ku, Tokyo, JPN, 158-0094
Rakuten is a leading e-commerce and financial technology service provider in Japan. It has built up a comprehensive Rakuten ecosystem in Japan, including Rakuten Ichiba for e-commerce, Rakuten Travel, Rakuten Card, Rakuten Bank, and Rakuten Securities, and became the fourth mobile network operator in Japan in April 2020. The loyalty program, Rakuten Super Points, has encouraged cross-use of services in its ecosystem. About 90% of its revenue is generated from the Japanese market.
71GF Score

Get the complete analysis for RKUNY

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

$4.57
Price
$5.73
GF Value