Telephone and Data Systems (FRA:TDA1) Cyclically Adjusted Book per Share: €40.11 (As of Mar. 2026)


FRA:TDA1 Telephone and Data Systems Inc FRA:TDA1
59 GF Score
Price €30.40
GF Value €28.02
Valuation Fairly Valued
! 5 Warning Signs
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What is Telephone and Data Systems Cyclically Adjusted Book per Share?

Telephone and Data Systems FRA:TDA1 -0.65% 59 Cyclically Adjusted Book per Share is €40.11 as of Mar. 2026. GuruFocus rates FRA:TDA1 with a GF Score™ of 59/100 and a GF Value™ of €28.02 (Fairly Valued). The stock has 5 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.

Telephone and Data Systems's adjusted book value per share for the three months ended in Mar. 2026 was €29.254. 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 €40.11 for the trailing ten years ended in Mar. 2026.

During the past 12 months, Telephone and Data Systems's average Cyclically Adjusted Book Growth Rate was -0.90% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 2.30% per year. During the past 10 years, the average Cyclically Adjusted Book Growth Rate was 2.80% 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 Telephone and Data Systems was 13.60% per year. The lowest was 0.00% per year. And the median was 3.50% per year.

As of today (2026-07-09), Telephone and Data Systems's current stock price is €30.40. Telephone and Data Systems's Cyclically Adjusted Book per Share for the quarter that ended in Mar. 2026 was €40.11. Telephone and Data Systems's Cyclically Adjusted PB Ratio of today is 0.76.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Telephone and Data Systems was 1.02. The lowest was 0.14. And the median was 0.61.


Telephone and Data Systems  (FRA:TDA1) 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.

Telephone and Data Systems's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=30.40/40.11
=0.76

* 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 Telephone and Data Systems was 1.02. The lowest was 0.14. And the median was 0.61.


Be Aware

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


Telephone and Data Systems Cyclically Adjusted Book per Share Related Terms


Telephone and Data Systems Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Telephone and Data Systems'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.

Telephone and Data Systems Cyclically Adjusted Book per Share Chart

Telephone and Data Systems 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 37.22 75.29 43.63 23.47 38.78

Telephone and Data Systems Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
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 20.77 22.60 20.40 38.78 40.11

FRA:TDA1 vs LBRDA, IRDM, LBTYA: Cyclically Adjusted Book per Share Comparison

For the Telecom Services subindustry, Telephone and Data Systems'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.


Telephone and Data Systems Cyclically Adjusted PB Ratio vs Telecommunication Services Industry

For the Telecommunication Services industry and Communication Services sector, Telephone and Data Systems's Cyclically Adjusted PB Ratio distribution charts can be found below:

* The bar in red indicates where Telephone and Data Systems's Cyclically Adjusted PB Ratio falls into.


FRA:TDA1
59GF Score
Telephone and Data Systems Inc FRA:TDA1
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Telephone and Data Systems 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, Telephone and Data Systems's adjusted Book Value per Share data for the three months ended in Mar. 2026 was:

Adj_Book= Book Value per Share /CPI of Mar. 2026 (Change)*Current CPI (Mar. 2026)
=29.254/330.2130*330.2130
=29.254

Current CPI (Mar. 2026) = 330.2130.

Telephone and Data Systems Quarterly Data

Book Value per Share CPI Adj_Book
201606 33.614 241.018 46.054
201609 33.616 241.428 45.978
201612 35.714 241.432 48.847
201703 35.387 243.801 47.929
201706 33.527 244.955 45.196
201709 30.164 246.819 40.356
201712 32.498 246.524 43.530
201803 32.506 249.554 43.012
201806 34.298 251.989 44.945
201809 34.473 252.439 45.094
201812 35.160 251.233 46.213
201903 35.776 254.202 46.474
201906 35.744 256.143 46.080
201909 36.779 256.759 47.301
201912 36.415 256.974 46.793
202003 37.300 258.115 47.719
202006 36.811 257.797 47.151
202009 35.675 260.280 45.260
202012 34.532 260.474 43.778
202103 35.572 264.877 44.346
202106 34.829 271.696 42.330
202109 35.845 274.310 43.150
202112 37.347 278.802 44.234
202203 38.716 287.504 44.467
202206 40.409 296.311 45.032
202209 42.956 296.808 47.791
202212 40.246 296.797 44.777
202303 39.344 301.836 43.043
202306 38.293 305.109 41.444
202309 38.575 307.789 41.385
202312 33.346 306.746 35.897
202403 33.465 312.332 35.381
202406 33.239 314.175 34.936
202409 31.750 315.301 33.252
202412 33.495 315.605 35.045
202503 32.429 319.799 33.485
202506 29.629 322.561 30.332
202509 25.020 324.800 25.437
202512 27.978 324.054 28.510
202603 29.254 330.213 29.254

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 €40.11 mean?
Telephone and Data Systems (FRA:TDA1) has a Cyclically Adjusted Book per Share of €40.11 as of Mar. 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 Telephone and Data Systems and its competitors.
Is Telephone and Data Systems' Cyclically Adjusted Book per Share too high?
Telephone and Data Systems' current Cyclically Adjusted Book per Share is €40.11. Overall, Telephone and Data Systems has a GF Score™ of 59/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Telephone and Data Systems' Cyclically Adjusted Book per Share compare to LBRDA and IRDM?
Telephone and Data Systems' Cyclically Adjusted Book per Share of €40.11 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 Telephone and Data Systems and its competitors. Telephone and Data Systems's current Cyclically Adjusted Book per Share is €40.11. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Telephone and Data Systems stock overvalued right now?
Based on GuruFocus' analysis, Telephone and Data Systems (FRA:TDA1) is currently considered Fairly Valued. The stock's GF Value™ is €28.02, compared to a current price of €30.40 — trading 8.5% above its estimated fair value. The current Cyclically Adjusted Book per Share is €40.11. Telephone and Data Systems' overall GF Score™ is 59/100 with 5 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 Telephone and Data Systems (FRA:TDA1), the current Cyclically Adjusted Book per Share is €40.11 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 Telephone and Data Systems (FRA:TDA1) Overvalued in 2026?

Based on GuruFocus' analysis, Telephone and Data Systems stock appears to be overvalued. The current stock price of €30.40 is trading 8.5% above its estimated GF Value™ of €28.02. GuruFocus considers Telephone and Data Systems to be Fairly Valued.

Key valuation signals for FRA:TDA1:

  • Cyclically Adjusted Book per Share: €40.11
  • GF Value™: €28.02 vs. price of €30.40 (8.5% above fair value)
  • GF Score™: 59/100 with 5 warning signs

No single metric tells the full story. See the FRA:TDA1 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Telephone and Data Systems Business Description

Other Exchanges TDSpU.PFD:USATDS:USA
Address 30 North LaSalle Street, Suite 4000, Chicago, IL, USA, 60602
Telephone and Data Systems Inc is a diversified telecommunications operator that provides communications services to customers through broadband, video, voice, and wireless connections. The company has two reportable segments: TDS Telecom and Array. The majority of its revenue is generated from the TDS Telecom segment, which generates revenue by providing broadband, video, voice, and wireless services. The Array segment generates its revenue mainly by leasing tower space on Array-owned towers to customers.
59GF Score

Get the complete analysis for FRA:TDA1

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

€30.40
Price
€28.02
GF Value