Kayac (TSE:3904) E10: 円27.84 (As of Dec. 2025)

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.

TSE:3904 Kayac Inc TSE:3904
61 GF Score
Price 円423.00
GF Value 円783.77
Valuation Significantly Undervalued
! 1 Warning Sign
View Full Analysis

What is Kayac E10?

Kayac TSE:3904 -0.70% 61 E10 is 円27.84 as of Dec. 2025. GuruFocus rates TSE:3904 with a GF Score™ of 61/100 and a GF Value™ of 円783.77 (Significantly Undervalued). The stock has 1 warning sign investors should review.

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller P/E calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years.

Kayac's adjusted earnings per share data for the three months ended in Dec. 2025 was 円2.470. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is 円27.84 for the trailing ten years ended in Dec. 2025.

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 E10 growth rate using E10 data.

As of today (2026-08-17), Kayac's current stock price is 円423.00. Kayac's E10 for the quarter that ended in Dec. 2025 was 円27.84. Kayac's Shiller PE Ratio of today is 15.19.

During the past 13 years, the highest Shiller PE Ratio of Kayac was 27.89. The lowest was 13.79. And the median was 17.00.


Kayac  (TSE:3904) E10 Explanation

If a company grows much fast than inflation, E10 may underestimate the company's earnings power. Shiller PE Ratio can seem to be too high even the actual P/E is low.

For the Shiller P/E, the earnings of the past 10 years are inflation-adjusted and averaged. The result is used for P/E calculation. Since it looks at the average over the last 10 years, the Shiller P/E is also called PE10.

The Shiller P/E was first used by professor Robert Shiller to measure the valuation of the overall market. The same calculation is applied here to individual companies.

Kayac's Shiller P/E Ratio of today is calculated as

Shiller PE Ratio=Share Price/E10
=423.00/27.84
=15.19

* 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 Shiller P/E Ratio of Kayac was 27.89. The lowest was 13.79. And the median was 17.00.


Be Aware

Shiller PE Ratio works better for cyclical companies. It gives you a better idea on the company's real earnings power.


Kayac E10 Related Terms


Kayac E10 Historical Data

* Premium members only.

The historical data trend for Kayac's E10 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.

Kayac E10 Chart

Kayac Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
E10
Get a 7-Day Free Trial Premium Member Only Premium Member Only 0.00 0.00 0.00 0.00 27.84

Kayac Quarterly Data
Mar21 Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
E10 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 26.81 26.09 27.53 27.84 0.00

TSE:3904 vs NTES, EA, TTWO: E10 Comparison

For the Electronic Gaming & Multimedia subindustry, Kayac's Shiller PE Ratio, along with its competitors' market caps and Shiller PE 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.


Kayac Shiller PE Ratio vs Interactive Media Industry

For the Interactive Media industry and Communication Services sector, Kayac's Shiller PE Ratio distribution charts can be found below:

* The bar in red indicates where Kayac's Shiller PE Ratio falls into.


TSE:3904
61GF Score
Kayac Inc TSE:3904
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Kayac E10 Calculation

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller P/E calculation. When we calculate the today's Shiller P/E ratio of a stock, we use today's price divided by E10.

What is E10? How do we calculate E10?

E10 is the average of the inflation adjusted earnings of a company over the past 10 years. Let's use an example to explain.

If we want to calculate the E10 of Wal-Mart (WMT) for Dec. 31, 2010, we need to have the inflation data and the earnings from 2001 through 2010.

We adjusted the earnings of 2001 earnings data with the total inflation from 2001 through 2010 to the equivalent earnings in 2010. If the total inflation from 2001 to 2010 is 40%, and Wal-Mart earned $1 a share in 2001, then the 2001's equivalent earnings in 2010 is $1.4 a share. If Wal-Mart earns $1 again in 2002, and the total inflation from 2002 through 2010 is 35%, then the equivalent 2002 earnings in 2010 is $1.35. So on and so forth, you get the equivalent earnings of past 10 years. Then you add them together and divided the sum by 10 to get E10.

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, Kayac's adjusted earnings per share data for the three months ended in Dec. 2025 was:

Adj_EPS= Earnings per Share (Diluted) /CPI of Dec. 2025 (Change)*Current CPI (Dec. 2025)
=2.47/113.0000*113.0000
=2.470

Current CPI (Dec. 2025) = 113.0000.

Kayac Quarterly Data

per share eps CPI Adj_EPS
201512 6.985 98.100 8.046
201603 6.500 97.900 7.503
201606 3.270 98.100 3.767
201609 2.270 98.000 2.617
201612 19.010 98.400 21.831
201703 14.590 98.100 16.806
201706 7.090 98.500 8.134
201709 5.110 98.800 5.844
201712 6.120 99.400 6.957
201803 3.270 99.200 3.725
201806 -0.070 99.200 -0.080
201809 -17.950 99.900 -20.304
201812 -2.149 99.700 -2.436
201903 -6.470 99.700 -7.333
201906 -9.620 99.800 -10.892
201909 0.584 100.100 0.659
201912 -4.633 100.500 -5.209
202003 5.740 100.300 6.467
202006 6.650 99.900 7.522
202009 16.410 99.900 18.562
202012 4.160 99.300 4.734
202103 20.020 99.900 22.645
202106 7.970 99.500 9.051
202109 10.410 100.100 11.752
202112 15.590 100.100 17.599
202203 16.750 101.100 18.722
202206 17.050 101.800 18.926
202209 7.720 103.100 8.461
202212 8.020 104.100 8.706
202303 16.330 104.400 17.675
202306 3.110 105.200 3.341
202309 10.830 106.200 11.523
202312 1.280 106.800 1.354
202403 8.620 107.200 9.086
202406 -7.160 108.200 -7.478
202412 0.000 110.700 0.000
202503 25.640 111.100 26.078
202506 -3.780 111.700 -3.824
202509 18.300 112.000 18.463
202512 2.470 113.000 2.470

Add all the adjusted EPS together and divide 10 will get our e10.

Frequently Asked Questions Learn more about E10 →
What does a E10 of 円27.84 mean?
Kayac (TSE:3904) has a E10 of 円27.84 as of Dec. 2025. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Kayac and its competitors.
Is Kayac's E10 too high?
Kayac's current E10 is 円27.84. Overall, Kayac has a GF Score™ of 61/100 and is considered Significantly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Kayac's E10 compare to NTES and EA?
Kayac's E10 of 円27.84 can be compared against companies in the Interactive Media industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good E10 for an Interactive Media company?
A good E10 depends on the Interactive Media industry context. However, E10 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 E10 mean?
A high E10 can signal that a stock is expensive relative to its fundamentals. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Kayac and its competitors. Kayac's current E10 is 円27.84. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Kayac stock overvalued right now?
Based on GuruFocus' analysis, Kayac (TSE:3904) is currently considered Significantly Undervalued. The stock's GF Value™ is 円783.77, compared to a current price of 円423.00 — trading 46% below its estimated fair value. The current E10 is 円27.84. Kayac's overall GF Score™ is 61/100 with 1 warning sign to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is E10 calculated?
E10 is calculated from a company's financial statements. For Kayac (TSE:3904), the current E10 is 円27.84 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 Kayac (TSE:3904) Overvalued in 2026?

Based on GuruFocus' analysis, Kayac stock appears to be undervalued. The current stock price of 円423.00 is trading 46% below its estimated GF Value™ of 円783.77. GuruFocus considers Kayac to be Significantly Undervalued.

Key valuation signals for TSE:3904:

  • E10: 円27.84
  • GF Value™: 円783.77 vs. price of 円423.00 (46% below fair value)
  • GF Score™: 61/100 with 1 warning sign

No single metric tells the full story. See the TSE:3904 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Kayac Business Description

Address 11-8 Onarimachi, Former Bank Building, Kanagawa Prefecture, Kamakura, JPN, 248-0012
Kayac Inc is a Japanese entertainment content business. The group operates a digital platform, a publishing business, and develops and invests in area-specific content in key regions. It provides services of Regional capitalism, Game Entertainment, Interesting Production, e-sports, and Others.
61GF Score

Get the complete analysis for TSE:3904

E10 is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

円423.00
Price
円783.77
GF Value