Rakuten Group (STU:RAK) Cyclically Adjusted PB Ratio: (As of Sep. 22, 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.
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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.

STU:RAK Rakuten Group Inc STU:RAK
69 GF Score
Price €3.93
GF Value €5.07
Valuation Modestly Undervalued
! 5 Warning Signs
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What is Rakuten Group Cyclically Adjusted PB Ratio?

Shiller PE for Stocks: The True Measure of Stock Valuation


Rakuten Group  (STU:RAK) Cyclically Adjusted PB Ratio Explanation

Compared with the regular PB Ratio, which works poorly for cyclical businesses, the Cyclically Adjusted PB Ratio smoothed out the fluctuations of book value during business cycles. Therefore it is more accurate in reflecting the valuation of the company.

If a company has consistent business performance, the Cyclically Adjusted PB Ratio should give similar results to regular PB Ratio.


Rakuten Group Cyclically Adjusted PB Ratio Related Terms


Rakuten Group Cyclically Adjusted PB Ratio Historical Data

* Premium members only.

The historical data trend for Rakuten Group's Cyclically Adjusted PB Ratio 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 PB Ratio Chart

Rakuten Group Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Cyclically Adjusted PB Ratio
Get a 7-Day Free Trial Premium Member Only Premium Member Only 2.48 1.07 0.96 1.18 1.22

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 PB Ratio 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 0.98 1.16 1.21 0.92 0.93

STU:RAK vs AMZN, BABA, PDD: Cyclically Adjusted PB Ratio 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.


STU:RAK
69GF Score
Rakuten Group Inc STU:RAK
Cyclically Adjusted PB Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Rakuten Group Cyclically Adjusted PB Ratio Calculation

Like the Shiller PE Ratio, the Cyclically Adjusted PB Ratio takes the Book Value per Share from the past 10 years, adjusts it for inflation, and then calculates the average. This average is then used for the P/B calculation. Because it considers this 10-year average, it's often referred to as the CAPB Ratio.

The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio.

Rakuten Group's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 is calculated as:

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)
=3.252/113.6000*113.6000
=3.252

Current CPI (Jun. 2026) = 113.6000.

Rakuten Group Quarterly Data

Book Value per Share CPI Adj_Book
201609 3.826 98.000 4.435
201612 3.889 98.400 4.490
201703 3.924 98.100 4.544
201706 3.670 98.500 4.233
201709 3.610 98.800 4.151
201712 3.752 99.400 4.288
201803 3.550 99.200 4.065
201806 4.003 99.200 4.584
201809 4.334 99.900 4.928
201812 4.577 99.700 5.215
201903 5.212 99.700 5.939
201906 5.221 99.800 5.943
201909 4.740 100.100 5.379
201912 4.456 100.500 5.037
202003 4.255 100.300 4.819
202006 4.393 99.900 4.995
202009 4.032 99.900 4.585
202012 3.655 99.300 4.181
202103 4.314 99.900 4.906
202106 5.618 99.500 6.414
202109 5.585 100.100 6.338
202112 5.394 100.100 6.121
202203 4.929 101.100 5.538
202206 4.643 101.800 5.181
202209 4.490 103.100 4.947
202212 3.789 104.100 4.135
202303 3.385 104.400 3.683
202306 3.477 105.200 3.755
202309 3.345 106.200 3.578
202312 3.261 106.800 3.469
202403 3.172 107.200 3.361
202406 3.045 108.200 3.197
202409 2.826 108.900 2.948
202412 3.532 110.700 3.625
202503 3.260 111.100 3.333
202506 3.101 111.700 3.154
202509 3.083 112.000 3.127
202512 3.390 113.000 3.408
202603 3.204 112.700 3.230
202606 3.252 113.600 3.252

Add all the adjusted book value per share together and divide the count will get our 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.

Is Rakuten Group (STU:RAK) Overvalued in 2026?

Based on GuruFocus' analysis, Rakuten Group stock appears to be undervalued. The current stock price of €3.93 is trading 22.4% below its estimated GF Value™ of €5.07. GuruFocus considers Rakuten Group to be Modestly Undervalued.

Key valuation signals for STU:RAK:

  • Cyclically Adjusted PB Ratio:
  • GF Value™: €5.07 vs. price of €3.93 (22.4% below fair value)
  • GF Score™: 69/100 with 5 warning signs

No single metric tells the full story. See the STU:RAK 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.
69GF Score

Get the complete analysis for STU:RAK

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

€3.93
Price
€5.07
GF Value