TKGSY (Tokyo Gas Co) E10: $0.90 (As of Mar. 2026)


TKGSY Tokyo Gas Co Ltd TKGSY
65 GF Score
Price $18.74
GF Value $14.78
Valuation Modestly Overvalued
! 3 Warning Signs
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What is Tokyo Gas Co E10?

Tokyo Gas Co TKGSY +0.60% 65 E10 is $0.90 as of Mar. 2026. GuruFocus rates TKGSY with a GF Score™ of 65/100 and a GF Value™ of $14.78 (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.

Tokyo Gas Co's adjusted earnings per share data for the three months ended in Mar. 2026 was $0.568. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is $0.90 for the trailing ten years ended in Mar. 2026.

During the past 12 months, Tokyo Gas Co's average E10 Growth Rate was 16.70% per year. During the past 3 years, the average E10 Growth Rate was 9.50% per year. During the past 5 years, the average E10 Growth Rate was 12.70% per year. During the past 10 years, the average E10 Growth Rate was 6.60% 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 Tokyo Gas Co was 15.00% per year. The lowest was 1.10% per year. And the median was 6.40% per year.

As of today (2026-07-01), Tokyo Gas Co's current stock price is $18.7425. Tokyo Gas Co's E10 for the quarter that ended in Mar. 2026 was $0.90. Tokyo Gas Co's Shiller PE Ratio of today is 20.83.

During the past 13 years, the highest Shiller PE Ratio of Tokyo Gas Co was 26.99. The lowest was 10.75. And the median was 14.97.


Tokyo Gas Co  (OTCPK:TKGSY) 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.

Tokyo Gas Co's Shiller P/E Ratio of today is calculated as

Shiller PE Ratio=Share Price/E10
=18.7425/0.90
=20.83

* 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 Tokyo Gas Co was 26.99. The lowest was 10.75. And the median was 14.97.


Be Aware

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


Tokyo Gas Co E10 Related Terms


Tokyo Gas Co E10 Historical Data

* Premium members only.

The historical data trend for Tokyo Gas Co'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.

Tokyo Gas Co E10 Chart

Tokyo Gas Co 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 0.75 0.85 0.80 0.83 0.90

Tokyo Gas Co 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 0.83 0.95 0.94 0.93 0.90

TKGSY vs ATO, NI: E10 Comparison

For the Utilities - Regulated Gas subindustry, Tokyo Gas Co'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.


Tokyo Gas Co Shiller PE Ratio vs Utilities - Regulated Industry

For the Utilities - Regulated industry and Utilities sector, Tokyo Gas Co's Shiller PE Ratio distribution charts can be found below:

* The bar in red indicates where Tokyo Gas Co's Shiller PE Ratio falls into.


TKGSY
65GF Score
Tokyo Gas Co Ltd TKGSY
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
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Tokyo Gas Co 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, Tokyo Gas Co'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)
=0.568/112.7000*112.7000
=0.568

Current CPI (Mar. 2026) = 112.7000.

Tokyo Gas Co Quarterly Data

per share eps CPI Adj_EPS
201606 0.397 98.100 0.456
201609 -0.136 98.000 -0.156
201612 -0.085 98.400 -0.097
201703 0.343 98.100 0.394
201706 0.274 98.500 0.314
201709 0.041 98.800 0.047
201712 0.159 99.400 0.180
201803 0.275 99.200 0.312
201806 0.378 99.200 0.429
201809 -0.107 99.900 -0.121
201812 0.077 99.700 0.087
201903 0.498 99.700 0.563
201906 0.362 99.800 0.409
201909 -0.069 100.100 -0.078
201912 0.055 100.500 0.062
202003 0.101 100.300 0.113
202006 0.173 99.900 0.195
202009 0.123 99.900 0.139
202012 0.160 99.300 0.182
202103 0.074 99.900 0.083
202106 0.108 99.500 0.122
202109 0.175 100.100 0.197
202112 0.187 100.100 0.211
202203 0.476 101.100 0.531
202206 0.329 101.800 0.364
202209 0.267 103.100 0.292
202212 0.824 104.100 0.892
202303 0.973 104.400 1.050
202306 0.640 105.200 0.686
202309 0.215 106.200 0.228
202312 0.100 106.800 0.106
202403 0.414 107.200 0.435
202406 0.159 108.200 0.166
202409 -0.033 108.900 -0.034
202412 0.172 110.700 0.175
202503 0.330 111.100 0.335
202506 0.977 111.700 0.986
202509 0.283 112.000 0.285
202512 0.348 113.000 0.347
202603 0.568 112.700 0.568

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 $0.90 mean?
Tokyo Gas Co (TKGSY) has a E10 of $0.90 as of Mar. 2026. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Tokyo Gas Co and its competitors.
Is Tokyo Gas Co's E10 too high?
Tokyo Gas Co's current E10 is $0.90. Overall, Tokyo Gas Co has a GF Score™ of 65/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Tokyo Gas Co's E10 compare to ATO and NI?
Tokyo Gas Co's E10 of $0.90 can be compared against companies in the Utilities - Regulated 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 Utilities - Regulated company?
A good E10 depends on the Utilities - Regulated 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 Tokyo Gas Co and its competitors. Tokyo Gas Co's current E10 is $0.90. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Tokyo Gas Co stock overvalued right now?
Based on GuruFocus' analysis, Tokyo Gas Co (TKGSY) is currently considered Modestly Overvalued. The stock's GF Value™ is $14.78, compared to a current price of $18.74 — trading 26.8% above its estimated fair value. The current E10 is $0.90. Tokyo Gas Co's overall GF Score™ is 65/100 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 Tokyo Gas Co (TKGSY), the current E10 is $0.90 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 Tokyo Gas Co (TKGSY) Overvalued in 2026?

Based on GuruFocus' analysis, Tokyo Gas Co stock appears to be overvalued. The current stock price of $18.74 is trading 26.8% above its estimated GF Value™ of $14.78. GuruFocus considers Tokyo Gas Co to be Modestly Overvalued.

Key valuation signals for TKGSY:

  • E10: $0.90
  • GF Value™: $14.78 vs. price of $18.74 (26.8% above fair value)
  • GF Score™: 65/100 with 3 warning signs

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


Tokyo Gas Co Business Description

Address 1-5-20 Kaigan, Minato-ku, Tokyo, JPN, 105-8527
Tokyo Gas Co Ltd is a Japanese utility company involved in the production, generation, and supply of natural gas and electricity. Tokyo Gas segments its operations into Gas, Electric Power, Overseas, and Other business units. The company's Gas division generates the vast majority of its total revenue through the supply and sale of natural gas to, namely, the Tokyo metropolitan area and other Japanese urban areas. Tokyo Gas' supply of natural gas is fairly evenly distributed amongst residential, commercial, industrial, and power generation customers. The company's Electric Power business also represents a significant income stream. This division operates a portfolio of cogeneration and natural gas-fired thermal power plants primarily located in the Tokyo area.
65GF Score

Get the complete analysis for TKGSY

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

$18.74
Price
$14.78
GF Value