Hellenic Telecommunication Organization (ATH:HTO) E10: €0.93 (As of Dec. 2025)


ATH:HTO Hellenic Telecommunication Organization SA ATH:HTO
82 GF Score
Price €19.11
GF Value €14.79
Valuation Modestly Overvalued
! 6 Warning Signs
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What is Hellenic Telecommunication Organization E10?

Hellenic Telecommunication Organization ATH:HTO +1.06% 82 E10 is €0.93 as of Dec. 2025. GuruFocus rates ATH:HTO with a GF Score™ of 82/100 and a GF Value™ of €14.79 (Modestly Overvalued). The stock has 6 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.

Hellenic Telecommunication Organization's adjusted earnings per share data for the three months ended in Dec. 2025 was €0.601. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is €0.93 for the trailing ten years ended in Dec. 2025.

During the past 12 months, Hellenic Telecommunication Organization's average E10 Growth Rate was 19.20% per year. During the past 3 years, the average E10 Growth Rate was 13.90% 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 Hellenic Telecommunication Organization was 14.50% per year. The lowest was -16.30% per year. And the median was -2.90% per year.

As of today (2026-06-25), Hellenic Telecommunication Organization's current stock price is €19.11. Hellenic Telecommunication Organization's E10 for the quarter that ended in Dec. 2025 was €0.93. Hellenic Telecommunication Organization's Shiller PE Ratio of today is 20.55.

During the past 13 years, the highest Shiller PE Ratio of Hellenic Telecommunication Organization was 37.95. The lowest was 11.10. And the median was 21.40.


Hellenic Telecommunication Organization  (ATH:HTO) 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.

Hellenic Telecommunication Organization's Shiller P/E Ratio of today is calculated as

Shiller PE Ratio=Share Price/E10
=19.11/0.93
=20.55

* 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 Hellenic Telecommunication Organization was 37.95. The lowest was 11.10. And the median was 21.40.


Be Aware

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


Hellenic Telecommunication Organization E10 Related Terms


Hellenic Telecommunication Organization E10 Historical Data

* Premium members only.

The historical data trend for Hellenic Telecommunication Organization'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.

Hellenic Telecommunication Organization E10 Chart

Hellenic Telecommunication Organization 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 0.52 0.63 0.67 0.78 0.93

Hellenic Telecommunication Organization Quarterly Data
Mar21 Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25
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 0.78 0.81 0.82 0.88 0.93

ATH:HTO vs TMUS, VZ, T: E10 Comparison

For the Telecom Services subindustry, Hellenic Telecommunication Organization'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.


Hellenic Telecommunication Organization Shiller PE Ratio vs Telecommunication Services Industry

For the Telecommunication Services industry and Communication Services sector, Hellenic Telecommunication Organization's Shiller PE Ratio distribution charts can be found below:

* The bar in red indicates where Hellenic Telecommunication Organization's Shiller PE Ratio falls into.


ATH:HTO
82GF Score
Hellenic Telecommunication Organization SA ATH:HTO
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
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Hellenic Telecommunication Organization 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, Hellenic Telecommunication Organization'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)
=0.601/122.4494*122.4494
=0.601

Current CPI (Dec. 2025) = 122.4494.

Hellenic Telecommunication Organization Quarterly Data

per share eps CPI Adj_EPS
201503 0.083 100.549 0.101
201506 -0.007 100.838 -0.009
201509 0.160 100.856 0.194
201512 0.075 100.087 0.092
201603 0.069 99.041 0.085
201606 0.069 100.121 0.084
201609 0.114 99.878 0.140
201612 0.034 100.110 0.042
201703 0.075 100.770 0.091
201706 0.064 101.138 0.077
201709 0.107 100.882 0.130
201712 -0.108 100.762 -0.131
201803 0.080 100.534 0.097
201806 0.101 102.121 0.121
201809 0.246 101.982 0.295
201812 -0.065 101.330 -0.079
201906 0.000 101.837 0.000
201912 0.000 102.120 0.000
202006 0.000 100.239 0.000
202012 0.000 99.751 0.000
202103 0.221 99.817 0.271
202106 0.212 101.270 0.256
202109 0.463 102.095 0.555
202112 0.225 104.853 0.263
202203 0.291 108.651 0.328
202206 0.242 113.517 0.261
202209 0.371 114.371 0.397
202212 -0.018 112.428 -0.020
202303 0.315 113.620 0.339
202306 0.261 115.515 0.277
202309 0.354 116.234 0.373
202312 0.323 116.364 0.340
202403 0.325 117.285 0.339
202406 0.304 118.129 0.315
202409 0.375 119.650 0.384
202412 0.485 119.360 0.498
202503 0.368 120.133 0.375
202506 0.200 121.399 0.202
202509 0.638 121.946 0.641
202512 0.601 122.449 0.601

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 €0.93 mean?
Hellenic Telecommunication Organization (ATH:HTO) has a E10 of €0.93 as of Dec. 2025. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Hellenic Telecommunication Organization and its competitors.
Is Hellenic Telecommunication Organization's E10 too high?
Hellenic Telecommunication Organization's current E10 is €0.93. Overall, Hellenic Telecommunication Organization has a GF Score™ of 82/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Hellenic Telecommunication Organization's E10 compare to TMUS and VZ?
Hellenic Telecommunication Organization's E10 of €0.93 can be compared against companies in the Telecommunication Services 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 Telecommunication Services company?
A good E10 depends on the Telecommunication Services 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 Hellenic Telecommunication Organization and its competitors. Hellenic Telecommunication Organization's current E10 is €0.93. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Hellenic Telecommunication Organization stock overvalued right now?
Based on GuruFocus' analysis, Hellenic Telecommunication Organization (ATH:HTO) is currently considered Modestly Overvalued. The stock's GF Value™ is €14.79, compared to a current price of €19.11 — trading 29.2% above its estimated fair value. The current E10 is €0.93. Hellenic Telecommunication Organization's overall GF Score™ is 82/100 with 6 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 Hellenic Telecommunication Organization (ATH:HTO), the current E10 is €0.93 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 Hellenic Telecommunication Organization (ATH:HTO) Overvalued in 2026?

Based on GuruFocus' analysis, Hellenic Telecommunication Organization stock appears to be overvalued. The current stock price of €19.11 is trading 29.2% above its estimated GF Value™ of €14.79. GuruFocus considers Hellenic Telecommunication Organization to be Modestly Overvalued.

Key valuation signals for ATH:HTO:

  • E10: €0.93
  • GF Value™: €14.79 vs. price of €19.11 (29.2% above fair value)
  • GF Score™: 82/100 with 6 warning signs

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


Hellenic Telecommunication Organization Business Description

Address 99 Kifissias Avenue, Marousi, GRC, 15124
Hellenic Telecommunication Organization SA is a telecommunications company that offers Internet access services, TV services, broadband, fixed-line services, and mobile telecommunication. The reportable segments of the company are as follows: i) Greece - Fixed business includes fixed-line services, internet access services, national and international wholesale services, and TV services in Greece. ii) Greece - Mobile business includes mobile telecommunications services and retail operations (shops). iii) TELEKOM ROMANIA MOBILE provides mobile telecommunications services in Romania.
82GF Score

Get the complete analysis for ATH:HTO

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

€19.11
Price
€14.79
GF Value