Open Door (TSE:3926) E10: 円3.37 (As of Mar. 2026)


TSE:3926 Open Door Inc TSE:3926
65 GF Score
Price 円327.00
GF Value 円648.68
Valuation Significantly Undervalued
! 2 Warning Signs
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What is Open Door E10?

Open Door TSE:3926 +8.64% 65 E10 is 円3.37 as of Mar. 2026. GuruFocus rates TSE:3926 with a GF Score™ of 65/100 and a GF Value™ of 円648.68 (Significantly Undervalued). The stock has 2 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.

Open Door's adjusted earnings per share data for the three months ended in Mar. 2026 was 円-1.200. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is 円3.37 for the trailing ten years ended in Mar. 2026.

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 (2026-07-01), Open Door's current stock price is 円327.00. Open Door's E10 for the quarter that ended in Mar. 2026 was 円3.37. Open Door's Shiller PE Ratio of today is 97.03.

During the past 12 years, the highest Shiller PE Ratio of Open Door was 97.13. The lowest was 38.01. And the median was 71.22.


Open Door  (TSE:3926) 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.

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

Shiller PE Ratio=Share Price/E10
=327.00/3.37
=97.03

* 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 12 years, the highest Shiller P/E Ratio of Open Door was 97.13. The lowest was 38.01. And the median was 71.22.


Be Aware

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


Open Door E10 Related Terms


Open Door E10 Historical Data

* Premium members only.

The historical data trend for Open Door'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.

Open Door E10 Chart

Open Door 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 0.00 0.00 0.00 0.00 3.37

Open Door Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 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 0.00 7.79 7.55 3.98 3.37

TSE:3926 vs GOOGL, META, SPOT: E10 Comparison

For the Internet Content & Information subindustry, Open Door'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.


Open Door Shiller PE Ratio vs Interactive Media Industry

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

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


TSE:3926
65GF Score
Open Door Inc TSE:3926
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Open Door 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, Open Door'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)
=-1.2/112.7000*112.7000
=-1.200

Current CPI (Mar. 2026) = 112.7000.

Open Door Quarterly Data

per share eps CPI Adj_EPS
201606 4.710 98.100 5.411
201609 7.220 98.000 8.303
201612 5.658 98.400 6.480
201703 2.865 98.100 3.291
201706 4.430 98.500 5.069
201709 6.680 98.800 7.620
201712 8.550 99.400 9.694
201803 4.740 99.200 5.385
201806 10.180 99.200 11.565
201809 9.690 99.900 10.932
201812 10.480 99.700 11.846
201903 5.090 99.700 5.754
201906 11.230 99.800 12.682
201909 8.610 100.100 9.694
201912 12.760 100.500 14.309
202003 -2.760 100.300 -3.101
202006 -11.680 99.900 -13.177
202009 -2.695 99.900 -3.040
202012 -1.743 99.300 -1.978
202103 -4.920 99.900 -5.550
202106 -6.370 99.500 -7.215
202109 -4.106 100.100 -4.623
202112 -2.911 100.100 -3.277
202203 -4.190 101.100 -4.671
202206 -1.140 101.800 -1.262
202209 0.380 103.100 0.415
202212 -1.231 104.100 -1.333
202303 0.550 104.400 0.594
202306 0.030 105.200 0.032
202309 2.340 106.200 2.483
202312 -0.870 106.800 -0.918
202403 -6.990 107.200 -7.349
202406 -2.020 108.200 -2.104
202409 1.620 108.900 1.677
202412 -1.820 110.700 -1.853
202503 -1.670 111.100 -1.694
202506 -2.860 111.700 -2.886
202509 -0.670 112.000 -0.674
202512 -31.750 113.000 -31.666
202603 -1.200 112.700 -1.200

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3.37 mean?
Open Door (TSE:3926) has a E10 of 円3.37 as of Mar. 2026. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Open Door and its competitors.
Is Open Door's E10 too high?
Open Door's current E10 is 円3.37. Overall, Open Door has a GF Score™ of 65/100 and is considered Significantly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Open Door's E10 compare to GOOGL and META?
Open Door's E10 of 円3.37 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 Open Door and its competitors. Open Door's current E10 is 円3.37. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Open Door stock overvalued right now?
Based on GuruFocus' analysis, Open Door (TSE:3926) is currently considered Significantly Undervalued. The stock's GF Value™ is 円648.68, compared to a current price of 円327.00 — trading 49.6% below its estimated fair value. The current E10 is 円3.37. Open Door's overall GF Score™ is 65/100 with 2 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 Open Door (TSE:3926), the current E10 is 円3.37 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 Open Door (TSE:3926) Overvalued in 2026?

Based on GuruFocus' analysis, Open Door stock appears to be undervalued. The current stock price of 円327.00 is trading 49.6% below its estimated GF Value™ of 円648.68. GuruFocus considers Open Door to be Significantly Undervalued.

Key valuation signals for TSE:3926:

  • E10: 円3.37
  • GF Value™: 円648.68 vs. price of 円327.00 (49.6% below fair value)
  • GF Score™: 65/100 with 2 warning signs

No single metric tells the full story. See the TSE:3926 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Open Door Business Description

Other Exchanges OPNDF:USA
Address 2-17-7 Akasaka, Akasaka Tameike Tower, 6th Floor, Minato-ku, Chikusei-cho, Tokyo, JPN, 107-0052
Open Door Inc is engaged in the planning and operation of game content for mobile phones, software development, and content delivery. It is also involved in development and provision of online systems for the internet and mobile phones. The company operates in two sites Travelko, a travel comparison site and GALLERY JAPAN, a japanese traditional art crafts site.
65GF Score

Get the complete analysis for TSE:3926

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

円327.00
Price
円648.68
GF Value