Bitcoin Japan (TSE:8105) E10: 円-4.18 (As of Mar. 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:8105 Bitcoin Japan Corp TSE:8105
48 GF Score
Price 円89.00
GF Value 円36.62
Valuation Significantly Overvalued
! 4 Warning Signs
View Full Analysis

What is Bitcoin Japan E10?

Bitcoin Japan TSE:8105 +1.14% 48 E10 is 円-4.18 as of Mar. 2026. GuruFocus rates TSE:8105 with a GF Score™ of 48/100 and a GF Value™ of 円36.62 (Significantly Overvalued). The stock has 4 warning signs 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.

Bitcoin Japan's adjusted earnings per share data for the three months ended in Mar. 2026 was 円-2.830. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is 円-4.18 for the trailing ten years ended in Mar. 2026.

During the past 3 years, the average E10 Growth Rate was -24.00% 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 E10 growth rate using E10 data.

During the past 13 years, the highest 3-Year average E10 Growth Rate of Bitcoin Japan was -24.00% per year. The lowest was -72.60% per year. And the median was -43.15% per year.

As of today (2026-08-29), Bitcoin Japan's current stock price is 円89.00. Bitcoin Japan's E10 for the quarter that ended in Mar. 2026 was 円-4.18. Bitcoin Japan's Shiller PE Ratio of today is .

During the past 13 years, the highest Shiller PE Ratio of Bitcoin Japan was 4750.00. The lowest was 94.81. And the median was 187.64.


Bitcoin Japan  (TSE:8105) 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.

During the past 13 years, the highest Shiller P/E Ratio of Bitcoin Japan was 4750.00. The lowest was 94.81. And the median was 187.64.


Be Aware

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


Bitcoin Japan E10 Related Terms


Bitcoin Japan E10 Historical Data

* Premium members only.

The historical data trend for Bitcoin Japan'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.

Bitcoin Japan E10 Chart

Bitcoin Japan Annual Data
Trend Mar17 Mar18 Mar19 Mar20 Mar21 Mar22 Mar23 Mar24 Mar25 Mar26
E10
Get a 7-Day Free Trial Premium Member Only Premium Member Only -1.49 -2.19 -2.46 0.00 -4.18

Bitcoin Japan Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
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 -3.12 -3.10 -3.27 -4.18 0.00

TSE:8105 vs RL, LEVI, VFC: E10 Comparison

For the Apparel Manufacturing subindustry, Bitcoin Japan'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.


Bitcoin Japan Shiller PE Ratio vs Manufacturing - Apparel & Accessories Industry

For the Manufacturing - Apparel & Accessories industry and Consumer Cyclical sector, Bitcoin Japan's Shiller PE Ratio distribution charts can be found below:

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


TSE:8105
48GF Score
Bitcoin Japan Corp TSE:8105
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Bitcoin Japan 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, Bitcoin Japan's adjusted earnings per share data for the three months ended in Mar. 2026 was:

Adj_EPS= Earnings per Share (Diluted) /CPI of Mar. 2026 (Change)*Current CPI (Mar. 2026)
=-2.83/112.7000*112.7000
=-2.830

Current CPI (Mar. 2026) = 112.7000.

Bitcoin Japan Quarterly Data

per share eps CPI Adj_EPS
201603 -0.082 97.900 -0.094
201606 0.480 98.100 0.551
201609 -0.690 98.000 -0.794
201612 4.387 98.400 5.025
201703 -0.431 98.100 -0.495
201706 -1.180 98.500 -1.350
201709 0.681 98.800 0.777
201712 0.971 99.400 1.101
201803 0.604 99.200 0.686
201806 -0.410 99.200 -0.466
201809 -1.027 99.900 -1.159
201812 1.300 99.700 1.470
201903 -8.156 99.700 -9.219
201906 1.260 99.800 1.423
201909 -0.390 100.100 -0.439
201912 0.210 100.500 0.235
202003 -3.670 100.300 -4.124
202006 -2.670 99.900 -3.012
202009 -2.330 99.900 -2.629
202012 -1.010 99.300 -1.146
202103 -8.396 99.900 -9.472
202106 -0.540 99.500 -0.612
202109 -1.412 100.100 -1.590
202112 -0.190 100.100 -0.214
202203 -1.560 101.100 -1.739
202206 0.030 101.800 0.033
202209 -0.823 103.100 -0.900
202212 0.140 104.100 0.152
202303 -0.740 104.400 -0.799
202306 0.340 105.200 0.364
202309 -1.163 106.200 -1.234
202312 -0.250 106.800 -0.264
202403 1.418 107.200 1.491
202406 -1.010 108.200 -1.052
202409 -1.900 108.900 -1.966
202503 0.000 111.100 0.000
202506 -1.310 111.700 -1.322
202509 -2.960 112.000 -2.979
202512 -2.160 113.000 -2.154
202603 -2.830 112.700 -2.830

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-4.18 mean?
Bitcoin Japan (TSE:8105) has a E10 of 円-4.18 as of Mar. 2026. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Bitcoin Japan and its competitors.
Is Bitcoin Japan's E10 too high?
Bitcoin Japan's current E10 is 円-4.18. Overall, Bitcoin Japan has a GF Score™ of 48/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Bitcoin Japan's E10 compare to RL and LEVI?
Bitcoin Japan's E10 of 円-4.18 can be compared against companies in the Manufacturing - Apparel & Accessories 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 a Manufacturing - Apparel & Accessories company?
A good E10 depends on the Manufacturing - Apparel & Accessories 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 Bitcoin Japan and its competitors. Bitcoin Japan's current E10 is 円-4.18. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Bitcoin Japan stock overvalued right now?
Based on GuruFocus' analysis, Bitcoin Japan (TSE:8105) is currently considered Significantly Overvalued. The stock's GF Value™ is 円36.62, compared to a current price of 円89.00 — trading 143% above its estimated fair value. The current E10 is 円-4.18. Bitcoin Japan's overall GF Score™ is 48/100 with 4 warning signs 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 Bitcoin Japan (TSE:8105), the current E10 is 円-4.18 as of Mar. 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 Bitcoin Japan (TSE:8105) Overvalued in 2026?

Based on GuruFocus' analysis, Bitcoin Japan stock appears to be overvalued. The current stock price of 円89.00 is trading 143% above its estimated GF Value™ of 円36.62. GuruFocus considers Bitcoin Japan to be Significantly Overvalued.

Key valuation signals for TSE:8105:

  • E10: 円-4.18
  • GF Value™: 円36.62 vs. price of 円89.00 (143% above fair value)
  • GF Score™: 48/100 with 4 warning signs

No single metric tells the full story. See the TSE:8105 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Bitcoin Japan Business Description

Address 1-10-5 Yokoami, Kokugikan Front Building 3rd floor, Sumida-ku, Tokyo, JPN
Bitcoin Japan Corp operates at the intersection of Bitcoin-related financial services and artificial intelligence. The company is developing infrastructure intended to support Japan's participation in the emerging intelligence-focused economy, combining AI-related investments with a balance sheet that includes Bitcoin holdings.
48GF Score

Get the complete analysis for TSE:8105

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

円89.00
Price
円36.62
GF Value