Planet (TSE:2391) E10: 円0.00 (As of Jan. 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:2391 Planet Inc TSE:2391
57 GF Score
Price 円1,217.00
GF Value 円934.79
Valuation Modestly Overvalued
! 3 Warning Signs
View Full Analysis

What is Planet E10?

Planet TSE:2391 57 E10 is 円0.00 as of Jan. 2026. GuruFocus rates TSE:2391 with a GF Score™ of 57/100 and a GF Value™ of 円934.79 (Modestly Overvalued). The stock has 3 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.

Planet's adjusted earnings per share data for the three months ended in Jan. 2026 was 円0.000. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is 円0.00 for the trailing ten years ended in Jan. 2026.

During the past 3 years, the average E10 Growth Rate was 2.50% per year. During the past 5 years, the average E10 Growth Rate was 3.20% 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 Planet was 3.60% per year. The lowest was 2.50% per year. And the median was 3.50% per year.

As of today (2026-07-14), Planet's current stock price is 円1217.00. Planet's E10 for the quarter that ended in Jan. 2026 was 円0.00. Planet's Shiller PE Ratio of today is .

During the past 13 years, the highest Shiller PE Ratio of Planet was 32.21. The lowest was 15.25. And the median was 20.06.


Planet  (TSE:2391) 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 Planet was 32.21. The lowest was 15.25. And the median was 20.06.


Be Aware

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


Planet E10 Related Terms


Planet E10 Historical Data

* Premium members only.

The historical data trend for Planet'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.

Planet E10 Chart

Planet Annual Data
Trend Jul16 Jul17 Jul18 Jul19 Jul20 Jul21 Jul22 Jul23 Jul24 Jul25
E10
Get a 7-Day Free Trial Premium Member Only Premium Member Only 70.04 73.63 75.37 77.58 79.26

Planet Quarterly Data
Apr21 Jul21 Oct21 Jan22 Apr22 Jul22 Oct22 Jan23 Apr23 Jul23 Oct23 Jan24 Apr24 Jul24 Jan25 Apr25 Jul25 Oct25 Jan26 Apr26
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 79.05 79.26 79.79 0.00 0.00

TSE:2391 vs IBM, ACN, FISV: E10 Comparison

For the Information Technology Services subindustry, Planet'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.


Planet Shiller PE Ratio vs Software Industry

For the Software industry and Technology sector, Planet's Shiller PE Ratio distribution charts can be found below:

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


TSE:2391
57GF Score
Planet Inc TSE:2391
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Planet 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, Planet's adjusted earnings per share data for the three months ended in Jan. 2026 was:

Adj_EPS= Earnings per Share (Diluted) /CPI of Jan. 2026 (Change)*Current CPI (Jan. 2026)
=0/112.9000*112.9000
=0.000

Current CPI (Jan. 2026) = 112.9000.

Planet Quarterly Data

per share eps CPI Adj_EPS
201601 13.628 97.700 15.748
201604 17.310 98.100 19.921
201607 20.438 97.900 23.569
201610 21.220 98.600 24.298
201701 17.600 98.200 20.235
201704 17.076 98.500 19.572
201707 16.310 98.300 18.732
201710 21.840 98.800 24.957
201801 23.650 99.500 26.835
201804 15.276 99.100 17.403
201807 20.196 99.200 22.985
201810 19.520 100.200 21.994
201901 18.660 99.700 21.131
201904 17.649 100.000 19.926
201907 18.219 99.800 20.610
201910 17.220 100.400 19.364
202001 15.109 100.500 16.973
202004 21.555 100.200 24.287
202007 12.729 100.000 14.371
202010 21.080 99.800 23.847
202101 18.310 99.800 20.713
202104 17.295 99.100 19.703
202107 18.428 99.700 20.868
202110 20.900 99.900 23.620
202201 16.090 100.300 18.111
202204 20.356 101.500 22.642
202207 21.990 102.300 24.269
202210 17.970 103.700 19.564
202301 15.064 104.700 16.244
202304 13.340 105.100 14.330
202307 20.338 105.700 21.723
202310 15.600 107.100 16.445
202401 18.020 106.900 19.031
202404 14.110 107.700 14.791
202407 21.359 108.600 22.205
202501 0.000 111.200 0.000
202504 15.570 111.500 15.765
202507 14.920 111.900 15.053
202510 18.250 112.800 18.266
202601 0.000 112.900 0.000

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0.00 mean?
Planet (TSE:2391) has a E10 of 円0.00 as of Jan. 2026. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Planet and its competitors.
Is Planet's E10 too high?
Planet's current E10 is 円0.00. Overall, Planet has a GF Score™ of 57/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Planet's E10 compare to IBM and ACN?
Planet's E10 of 円0.00 can be compared against companies in the Software 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 Software company?
A good E10 depends on the Software 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 Planet and its competitors. Planet's current E10 is 円0.00. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Planet stock overvalued right now?
Based on GuruFocus' analysis, Planet (TSE:2391) is currently considered Modestly Overvalued. The stock's GF Value™ is 円934.79, compared to a current price of 円1,217.00 — trading 30.2% above its estimated fair value. The current E10 is 円0.00. Planet's overall GF Score™ is 57/100 with 3 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 Planet (TSE:2391), the current E10 is 円0.00 as of Jan. 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 Planet (TSE:2391) Overvalued in 2026?

Based on GuruFocus' analysis, Planet stock appears to be overvalued. The current stock price of 円1,217.00 is trading 30.2% above its estimated GF Value™ of 円934.79. GuruFocus considers Planet to be Modestly Overvalued.

Key valuation signals for TSE:2391:

  • E10: 円0.00
  • GF Value™: 円934.79 vs. price of 円1,217.00 (30.2% above fair value)
  • GF Score™: 57/100 with 3 warning signs

No single metric tells the full story. See the TSE:2391 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Planet Business Description

Address Bunka Hoso Media Plus Building, Nippon Cultural Broadcasting, 3rd Floor 1-31 Hamamatsucho, Minato-ku, Tokyo, JPN, 105 0013
Planet Inc is engaged in the construction, provision and operation of electronic data interchange (EDI) backbone platform. Services offered by the company include EDI (data exchange), Product database and Buyers' Net. EDI (data exchange) includes electronic data exchange with manufacturers, wholesale businesses and material suppliers such as ordering, shipping, billing/payment. Product database is a service that provides merchandise information registered by manufacturers in the distribution industry from the Internet. Buyers' Net is an information provision service on the Internet that efficiently supports information exchange between manufacturers, wholesale businesses and retailers. It provides information such as product information, industry news and company campaigns.
57GF Score

Get the complete analysis for TSE:2391

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

円1,217.00
Price
円934.79
GF Value