Deutsche Telekom AG (XBUL:DTE) Cyclically Adjusted Book per Share: €11.43 (As of Jun. 2026)

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XBUL:DTE Deutsche Telekom AG XBUL:DTE
79 GF Score
Price €28.88
GF Value €31.71
Valuation Fairly Valued
! 2 Warning Signs
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What is Deutsche Telekom AG Cyclically Adjusted Book per Share?

Deutsche Telekom AG XBUL:DTE +2.92% 79 Cyclically Adjusted Book per Share is €11.43 as of Jun. 2026. GuruFocus rates XBUL:DTE with a GF Score™ of 79/100 and a GF Value™ of €31.71 (Fairly Valued). The stock has 2 warning signs investors should review.

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. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted Book per Share and the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years.

Deutsche Telekom AG's adjusted book value per share for the three months ended in Jun. 2026 was €12.514. Add all the adjusted book value per share for the past 10 years together and divide the count will get our Cyclically Adjusted Book per Share, which is €11.43 for the trailing ten years ended in Jun. 2026.

During the past 12 months, Deutsche Telekom AG's average Cyclically Adjusted Book Growth Rate was -100.00% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 8.60% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 8.30% per year. During the past 10 years, the average Cyclically Adjusted Book Growth Rate was 1.80% 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 Cyclically Adjusted Book Growth Rate using Cyclically Adjusted Book per Share data.

During the past 13 years, the highest 3-Year average Cyclically Adjusted Book Growth Rate of Deutsche Telekom AG was 9.70% per year. The lowest was -6.20% per year. And the median was -0.70% per year.

As of today (2026-08-09), Deutsche Telekom AG's current stock price is €28.88. Deutsche Telekom AG's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 was €11.43. Deutsche Telekom AG's Cyclically Adjusted PB Ratio of today is 2.53.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Deutsche Telekom AG was 3.74. The lowest was 1.65. And the median was 2.33.


Deutsche Telekom AG  (XBUL:DTE) Cyclically Adjusted Book per Share Explanation

If a company grows much fast than inflation, Cyclically Adjusted Book per Share may underestimate the company's equity. Cyclically Adjusted PB Ratio can seem to be too high even the actual PB Ratio is low.

For the Cyclically Adjusted PB Ratio, the book value of the past 10 years are inflation-adjusted and averaged. The result is used for P/B calculation. Since it looks at the average over the last 10 years, the Cyclically Adjusted PB Ratio is also called CAPB Ratio.

The Shiller PE Ratio was first used by professor Robert Shiller. He uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings per share of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted book value per share of a company over the past 10 years.

Deutsche Telekom AG's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=28.88/11.43
=2.53

* 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 Cyclically Adjusted PB Ratio of Deutsche Telekom AG was 3.74. The lowest was 1.65. And the median was 2.33.


Be Aware

Cyclically Adjusted PB Ratio works better for cyclical companies. It gives you a better idea on the company's real book value.


Deutsche Telekom AG Cyclically Adjusted Book per Share Related Terms


Deutsche Telekom AG Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Deutsche Telekom AG's Cyclically Adjusted Book per Share 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.

Deutsche Telekom AG Cyclically Adjusted Book per Share Chart

Deutsche Telekom AG Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Cyclically Adjusted Book per Share
Get a 7-Day Free Trial Premium Member Only Premium Member Only 0.00 0.00 0.00 9.78 9.83

Deutsche Telekom AG Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
Cyclically Adjusted Book per Share 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 9.46 10.21 9.83 10.20 11.43

XBUL:DTE vs VZ, TMUS, T: Cyclically Adjusted Book per Share Comparison

For the Telecom Services subindustry, Deutsche Telekom AG's Cyclically Adjusted PB Ratio, along with its competitors' market caps and Cyclically Adjusted PB 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.


Deutsche Telekom AG Cyclically Adjusted PB Ratio vs Telecommunication Services Industry

For the Telecommunication Services industry and Communication Services sector, Deutsche Telekom AG's Cyclically Adjusted PB Ratio distribution charts can be found below:

* The bar in red indicates where Deutsche Telekom AG's Cyclically Adjusted PB Ratio falls into.


XBUL:DTE
79GF Score
Deutsche Telekom AG XBUL:DTE
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Deutsche Telekom AG Cyclically Adjusted Book per Share Calculation

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. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted Book per Share and the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years.

What is Cyclically Adjusted Book per Share? How do we calculate Cyclically Adjusted Book per Share?

Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years. Let's use an example to explain.

If we want to calculate the Cyclically Adjusted Book per Share of Wal-Mart (WMT) for Dec. 31, 2010, we need to have the inflation data and the book value per share from 2001 through 2010.

We adjusted the 2001 book value per share data with the total inflation from 2001 through 2010 to the equivalent book value in 2010. If the total inflation from 2001 to 2010 is 40%, and Wal-Mart's book value is $1 a share in 2001, then the 2001's equivalent book value in 2010 is $1.4 a share. If Wal-Mart's book value is $1 again in 2002, and the total inflation from 2002 through 2010 is 35%, then the equivalent 2002 book value in 2010 is $1.35. So on and so forth, you get the equivalent book value per share of past 10 years. Then you add them together and divided the sum by the count to get Cyclically Adjusted Book per Share.

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, Deutsche Telekom AG's adjusted Book Value per Share data for the three months ended in Jun. 2026 was:

Adj_Book= Book Value per Share /CPI of Jun. 2026 (Change)*Current CPI (Jun. 2026)
=12.514/131.3638*131.3638
=12.514

Current CPI (Jun. 2026) = 131.3638.

Deutsche Telekom AG Quarterly Data

Book Value per Share CPI Adj_Book
201609 6.108 101.017 7.943
201612 6.293 101.217 8.167
201703 6.483 101.417 8.397
201706 6.261 102.117 8.054
201709 6.156 102.717 7.873
201712 6.481 102.617 8.297
201803 6.766 102.917 8.636
201806 6.246 104.017 7.888
201809 6.577 104.718 8.251
201812 6.517 104.217 8.215
201903 6.115 104.217 7.708
201906 6.091 105.718 7.569
201909 6.425 106.018 7.961
201912 6.685 105.818 8.299
202003 6.558 105.718 8.149
202006 7.540 106.618 9.290
202009 7.361 105.818 9.138
202012 7.573 105.518 9.428
202103 8.164 107.518 9.975
202106 7.695 108.486 9.318
202109 8.241 109.435 9.892
202112 8.584 110.384 10.216
202203 9.680 113.968 11.158
202206 9.653 115.760 10.954
202209 10.343 118.818 11.435
202212 9.765 119.345 10.748
202303 12.576 122.402 13.497
202306 11.994 123.140 12.795
202309 12.462 124.195 13.181
202312 11.434 123.773 12.135
202403 11.878 125.038 12.479
202406 11.656 125.882 12.164
202409 11.972 126.198 12.462
202412 12.916 127.041 13.355
202503 13.076 127.779 13.443
202506 12.021 128.412 12.297
202509 12.598 129.255 12.804
202512 12.850 129.361 13.049
202603 13.081 131.258 13.092
202606 12.514 131.364 12.514

Add all the adjusted book value per share together and divide the count will get our Cyclically Adjusted Book per Share.

What does a Cyclically Adjusted Book per Share of €11.43 mean?
Deutsche Telekom AG (XBUL:DTE) has a Cyclically Adjusted Book per Share of €11.43 as of Jun. 2026. Cyclically adjusted book value per share represents the company's inflation-adjusted book value per share over a 10-year period. View historical data on Deutsche Telekom AG and its competitors.
Is Deutsche Telekom AG's Cyclically Adjusted Book per Share too high?
Deutsche Telekom AG's current Cyclically Adjusted Book per Share is €11.43. Overall, Deutsche Telekom AG has a GF Score™ of 79/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Deutsche Telekom AG's Cyclically Adjusted Book per Share compare to VZ and TMUS?
Deutsche Telekom AG's Cyclically Adjusted Book per Share of €11.43 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 Cyclically Adjusted Book per Share for a Telecommunication Services company?
A good Cyclically Adjusted Book per Share depends on the Telecommunication Services industry context. However, Cyclically Adjusted Book per Share 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 Cyclically Adjusted Book per Share mean?
A high Cyclically Adjusted Book per Share can signal that a stock is expensive relative to its fundamentals. Cyclically adjusted book value per share represents the company's inflation-adjusted book value per share over a 10-year period. View historical data on Deutsche Telekom AG and its competitors. Deutsche Telekom AG's current Cyclically Adjusted Book per Share is €11.43. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Deutsche Telekom AG stock overvalued right now?
Based on GuruFocus' analysis, Deutsche Telekom AG (XBUL:DTE) is currently considered Fairly Valued. The stock's GF Value™ is €31.71, compared to a current price of €28.88 — trading 8.9% below its estimated fair value. The current Cyclically Adjusted Book per Share is €11.43. Deutsche Telekom AG's overall GF Score™ is 79/100 with 2 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Cyclically Adjusted Book per Share calculated?
Cyclically Adjusted Book per Share is calculated from a company's financial statements. For Deutsche Telekom AG (XBUL:DTE), the current Cyclically Adjusted Book per Share is €11.43 as of Jun. 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 Deutsche Telekom AG (XBUL:DTE) Overvalued in 2026?

Based on GuruFocus' analysis, Deutsche Telekom AG stock appears to be undervalued. The current stock price of €28.88 is trading 8.9% below its estimated GF Value™ of €31.71. GuruFocus considers Deutsche Telekom AG to be Fairly Valued.

Key valuation signals for XBUL:DTE:

  • Cyclically Adjusted Book per Share: €11.43
  • GF Value™: €31.71 vs. price of €28.88 (8.9% below fair value)
  • GF Score™: 79/100 with 2 warning signs

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


Deutsche Telekom AG Business Description

Address Friedrich-Ebert-Allee 140, Bonn, DEU, 53113
Deutsche Telekom is Germany's incumbent telecom operator and remains the dominant player in mobile and fixed markets. It also owns a controlling stake in T-Mobile US—one of three primary wireless carriers in the United States—which merged with Sprint in 2020, consolidating the market from four to three operators. Aside from its two core markets, Deutsche Telekom operates in several Central European countries and holds an IT arm (Systems Solutions).
79GF Score

Get the complete analysis for XBUL:DTE

Cyclically Adjusted Book per Share is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

€28.88
Price
€31.71
GF Value