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.
Telefonica's adjusted earnings per share data for the three months ended in Mar. 2025 was MXN-5.308. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is MXN6.47 for the trailing ten years ended in Mar. 2025.
During the past 12 months, Telefonica's average E10 Growth Rate was -25.00% per year.
During the past 3 years, the average E10 Growth Rate was -11.80% per year.
During the past 5 years, the average E10 Growth Rate was -10.00% per year.
During the past 10 years, the average E10 Growth Rate was -11.30% 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 Telefonica was 28.10% per year. The lowest was -17.70% per year. And the median was -1.20% per year.
As of today (2025-07-19), Telefonica's current stock price is MXN72.21. Telefonica's E10 for the quarter that ended in Mar. 2025 was MXN6.47. Telefonica's Shiller PE Ratio of today is 11.16.
During the past 13 years, the highestShiller PE Ratio of Telefonica was 12.08. The lowest was 3.84. And the median was 6.98.
Telefonica E10 Historical Data
The historical data trend for Telefonica'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.
For the Telecom Services subindustry, Telefonica'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.
Telefonica's Shiller PE Ratio Distribution in the Telecommunication Services Industry
For the Telecommunication Services industry and Communication Services sector, Telefonica's Shiller PE Ratio distribution charts can be found below:
* The bar in red indicates where Telefonica's Shiller PE Ratio falls into.
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, Telefonica's adjusted earnings per share data for the three months ended in Mar. 2025 was:
Add all the adjusted EPS together and divide 10 will get our e10.
Telefonica (MEX:TEF1 N) 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.
Telefonica's Shiller P/E Ratio of today is calculated as
* 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 Telefonica was 12.08. The lowest was 3.84. And the median was 6.98.
Be Aware
Shiller PE Ratio works better for cyclical companies. It gives you a better idea on the company's real earnings power.
Telefonica E10 Related Terms
Thank you for viewing the detailed overview of Telefonica's E10 provided by GuruFocus.com. Please click on the following links to see related term pages.
Telefonica operates mobile and fixed networks in Spain (where it is the incumbent operator), the UK, Germany, Brazil, and Latin American countries. The company derives more than 30% of its revenue from Spain, close to 20% from Germany, and 20% from Brazil. Its UK operations are held through a joint venture with Virgin Media. For several years Telefonica has been simplifying its corporate structure by selling noncore assets.
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