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.
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.
Telefonica Deutschland Holding AGHAM:O2D -1.00%65 Shiller PE Ratio is 198.00 as of Jul. 25, 2026, which is 352% above its 10-year median of 43.85. GuruFocus rates HAM:O2D with a GF Score™ of 65/100 and a GF Value™ of €2.09 (Fairly Valued). The stock has 5 warning signs investors should review. Among 221 Telecommunication Services companies, Telefonica Deutschland Holding AG ranks worse than 95.48% on this metric.
The historical rank and industry rank for Telefonica Deutschland Holding AG's Shiller PE Ratio or its related term are showing as below:
HAM:O2D'
s Shiller PE Ratio Range Over the Past 10 Years
Min: 31.6 Med: 43.85 Max: 218
Current: 136.58
During the past 13 years, Telefonica Deutschland Holding AG's highest Shiller PE Ratio was 218.00. The lowest was 31.60. And the median was 43.85.
HAM:O2D's Shiller PE Ratio is ranked worse than 95.48% of 221
companies
in the Telecommunication Services industry
Industry Median: 17.61
vs HAM:O2D: 136.58
E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years.
Telefonica Deutschland Holding AG's adjusted earnings per share data of for the fiscal year that ended in Dec25 was €0.060. Add all the adjusted EPS for the past 10 years together and divide 10 will get our E10, which is €0.01 for the trailing ten years ended in Dec25.
Shiller PE for Stocks: The True Measure of Stock Valuation
Telefonica Deutschland Holding AG (HAM:O2D) Shiller PE Ratio Explanation
Compared with the regular PE Ratio, which works poorly for cyclical businesses, the Shiller PE Ratio smoothed out the fluctuations of profit margins during business cycles. Therefore it is more accurate in reflecting the valuation of the company.
If a company has consistent business performance, the Shiller PE Ratio should give similar results to regular PE Ratio.
Compared with the PS Ratio, the Shiller PE Ratio makes the comparison between different industries more meaningful.
Be Aware
Shiller PE Ratio assumes that over the long term, businesses and profitability revert to their means. If a company's business model does not work in the future compared with the past, Shiller PE Ratio and PS Ratio will give false valuations.
Telefonica Deutschland Holding AG Shiller PE Ratio Related Terms
Telefonica Deutschland Holding AG Shiller PE Ratio Historical Data
* 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.
Telefonica Deutschland Holding AG Shiller PE Ratio Chart
HAM:O2D vs TMUS, VZ, T: Shiller PE Ratio Comparison
For the Telecom Services subindustry, Telefonica Deutschland Holding AG'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 Deutschland Holding AG Shiller PE Ratio vs Telecommunication Services Industry
For the Telecommunication Services industry and Communication Services sector, Telefonica Deutschland Holding AG's Shiller PE Ratio distribution charts can be found below:
* The bar in red indicates where Telefonica Deutschland Holding AG's Shiller PE Ratio falls into.
Telefonica Deutschland Holding AG Shiller PE Ratio Calculation
For Shiller PE Ratio, 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 PE Ratio is also called PE10.
The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The same calculation is applied here to individual companies.
* 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.
Add all the adjusted EPS together and divide 10 will get our 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.
Telefonica Deutschland Holding AG (HAM:O2D) has a Shiller PE Ratio of 198.00 as of Jul. 25, 2026. Shiller price-earnings ratio is the ratio of share price to a company's inflation-adjusted earnings over a 10-year period. View historical data on Telefonica Deutschland Holding AG and its competitors. This is 352% above median its historical median of 43.85. Over the past decade, Telefonica Deutschland Holding AG's Shiller PE Ratio has ranged from 31.60 to 218.00. According to the industry distribution chart, Telefonica Deutschland Holding AG ranks #211 out of 221 companies in the Telecommunication Services industry, placing it in the top 95.5%.
Is Telefonica Deutschland Holding AG's Shiller PE Ratio too high?
Telefonica Deutschland Holding AG's current Shiller PE Ratio of 198.00 is 352% above median its 10-year median of 43.85. Over the past 10 years, this metric has ranged from a low of 31.60 to a high of 218.00. The Telecommunication Services industry median Shiller PE Ratio is 17.61. Telefonica Deutschland Holding AG's value of 198.00 is 1024.4% above this industry median. Based on the distribution chart, Telefonica Deutschland Holding AG ranks #211 out of 221 companies in the Telecommunication Services industry, which is in the bottom quartile relative to peers. Overall, Telefonica Deutschland Holding AG has a GF Score™ of 65/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Telefonica Deutschland Holding AG's Shiller PE Ratio compare to TMUS and VZ?
According to the Telecommunication Services industry distribution chart, Telefonica Deutschland Holding AG ranks #211 out of 221 companies for Shiller PE Ratio. This places Telefonica Deutschland Holding AG in the lower half of its industry. The industry median Shiller PE Ratio is 17.61. Telefonica Deutschland Holding AG's value of 198.00 is 1024.4% above this benchmark. Historically, Telefonica Deutschland Holding AG's own Shiller PE Ratio has ranged from 31.60 to 218.00 over the past decade. While the company's 10-year median is 43.85 vs. the industry median of 17.61, Telefonica Deutschland Holding AG has consistently been above the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Shiller PE Ratio for a Telecommunication Services company?
The median Shiller PE Ratio among Telecommunication Services companies is 17.61, based on 221 companies in the industry. Companies in the top quartile (top 25%) have a Shiller PE Ratio significantly above this median, while those in the bottom quartile fall well below. However, Shiller PE Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Telefonica Deutschland Holding AG's current Shiller PE Ratio of 198.00 is 1024.4% above the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Shiller PE Ratio mean?
A high Shiller PE Ratio can signal that a stock is expensive relative to its fundamentals. Shiller price-earnings ratio is the ratio of share price to a company's inflation-adjusted earnings over a 10-year period. View historical data on Telefonica Deutschland Holding AG and its competitors. For the Telecommunication Services industry, the median Shiller PE Ratio is 17.61 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Telefonica Deutschland Holding AG's current Shiller PE Ratio is 198.00, which is 352% above median its own 10-year median of 43.85. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Telefonica Deutschland Holding AG stock overvalued right now?
Based on GuruFocus' analysis, Telefonica Deutschland Holding AG (HAM:O2D) is currently considered Fairly Valued. The stock's GF Value™ is €2.09, compared to a current price of €1.98 — trading 5.3% below its estimated fair value. The current Shiller PE Ratio is 198.00, which is 352% above median its 10-year median of 43.85 and 1024.4% above the Telecommunication Services industry median of 17.61. Telefonica Deutschland Holding AG's overall GF Score™ is 65/100 with 5 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Shiller PE Ratio calculated?
Shiller PE Ratio is calculated from a company's financial statements. For Telefonica Deutschland Holding AG (HAM:O2D), the current Shiller PE Ratio is 198.00 as of Jul. 25, 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 Telefonica Deutschland Holding AG (HAM:O2D) Overvalued in 2026?
Based on GuruFocus' analysis, Telefonica Deutschland Holding AG stock appears to be undervalued.
The current stock price of €1.98 is trading 5.3% below its estimated GF Value™ of €2.09.
GuruFocus considers Telefonica Deutschland Holding AG to be Fairly Valued.
Key valuation signals for HAM:O2D:
Shiller PE Ratio: 198.00 (352% above median its 10-year median of 43.85)
GF Value™: €2.09 vs. price of €1.98 (5.3% below fair value)
Industry Position: 1024.4% above the Telecommunication Services median (#211 of 221)
No single metric tells the full story. See the HAM:O2D stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Telefonica Deutschland Holding AG Business Description
Telefonica Deutschland Holding AG is the German subsidiary of Telefonica, which provides integrated network operations in Germany. The company offers mobile and fixed-network services for private and business customers as well as digital products and services. Its core brand is O2. It includes secondary brands and partners such as ALDI TALK, Tchibo MOBIL, AY YILDIZ, and others.
65GF Score
Get the complete analysis for HAM:O2D
Shiller PE Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
HAM:O2D has been successfully added to your 
