T-Mobile US (BSP:T1MU34) Cyclically Adjusted Book per Share: R$19.89 (As of Jun. 2026)

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BSP:T1MU34 T-Mobile US Inc BSP:T1MU34
84 GF Score
Price R$66.78
GF Value R$87.53
Valuation Modestly Undervalued
! 1 Warning Sign
View Full Analysis

What is T-Mobile US Cyclically Adjusted Book per Share?

T-Mobile US BSP:T1MU34 +0.13% 84 Cyclically Adjusted Book per Share is R$19.89 as of Jun. 2026. GuruFocus rates BSP:T1MU34 with a GF Score™ of 84/100 and a GF Value™ of R$87.53 (Modestly Undervalued). The stock has 1 warning sign 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.

T-Mobile US's adjusted book value per share for the three months ended in Jun. 2026 was R$19.160. 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 R$19.89 for the trailing ten years ended in Jun. 2026.

During the past 12 months, T-Mobile US's average Cyclically Adjusted Book Growth Rate was 8.80% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 10.30% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 13.20% per year. During the past 10 years, the average Cyclically Adjusted Book Growth Rate was 13.30% 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 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 T-Mobile US was 17.20% per year. The lowest was 9.90% per year. And the median was 11.95% per year.

As of today (2026-08-31), T-Mobile US's current stock price is R$66.78. T-Mobile US's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 was R$19.89. T-Mobile US's Cyclically Adjusted PB Ratio of today is 3.36.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of T-Mobile US was 5.99. The lowest was 2.75. And the median was 3.82.


T-Mobile US  (BSP:T1MU34) 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.

T-Mobile US's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=66.78/19.89
=3.36

* 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 T-Mobile US was 5.99. The lowest was 2.75. And the median was 3.82.


Be Aware

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


T-Mobile US Cyclically Adjusted Book per Share Related Terms


T-Mobile US Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for T-Mobile US'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.

T-Mobile US Cyclically Adjusted Book per Share Chart

T-Mobile US 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 12.73 13.69 14.09 19.98 19.41

T-Mobile US 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 18.41 18.51 19.41 18.72 19.89

BSP:T1MU34 vs VZ, T, CMCSA: Cyclically Adjusted Book per Share Comparison

For the Telecom Services subindustry, T-Mobile US'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.


T-Mobile US Cyclically Adjusted PB Ratio vs Telecommunication Services Industry

For the Telecommunication Services industry and Communication Services sector, T-Mobile US's Cyclically Adjusted PB Ratio distribution charts can be found below:

* The bar in red indicates where T-Mobile US's Cyclically Adjusted PB Ratio falls into.


BSP:T1MU34
84GF Score
T-Mobile US Inc BSP:T1MU34
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

T-Mobile US 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, T-Mobile US'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)
=19.16/333.9520*333.9520
=19.160

Current CPI (Jun. 2026) = 333.9520.

T-Mobile US Quarterly Data

Book Value per Share CPI Adj_Book
201609 5.035 241.428 6.965
201612 5.287 241.432 7.313
201703 5.099 243.801 6.984
201706 5.556 244.955 7.575
201709 5.453 246.819 7.378
201712 6.178 246.524 8.369
201803 6.281 249.554 8.405
201806 7.436 251.989 9.855
201809 8.425 252.439 11.145
201812 8.065 251.233 10.720
201903 8.406 254.202 11.043
201906 8.692 256.143 11.332
201909 9.551 256.759 12.422
201912 9.850 256.974 12.801
202003 11.744 258.115 15.195
202006 18.868 257.797 24.442
202009 20.052 260.280 25.728
202012 19.337 260.474 24.792
202103 21.429 264.877 27.017
202106 19.419 271.696 23.869
202109 20.657 274.310 25.148
202112 22.343 278.802 26.763
202203 19.845 287.504 23.051
202206 20.136 296.311 22.694
202209 21.017 296.808 23.647
202212 21.150 296.797 23.798
202303 20.668 301.836 22.867
202306 19.311 305.109 21.137
202309 19.641 307.789 21.311
202312 18.940 306.746 20.620
202403 18.755 312.332 20.053
202406 20.653 314.175 21.953
202409 21.822 315.301 23.113
202412 23.507 315.605 24.874
202503 22.097 319.799 23.075
202506 21.470 322.561 22.228
202509 20.712 324.800 21.296
202512 20.842 324.054 21.479
202603 19.222 330.213 19.440
202606 19.160 333.952 19.160

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 R$19.89 mean?
T-Mobile US (BSP:T1MU34) has a Cyclically Adjusted Book per Share of R$19.89 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 T-Mobile US and its competitors.
Is T-Mobile US's Cyclically Adjusted Book per Share too high?
T-Mobile US's current Cyclically Adjusted Book per Share is R$19.89. Overall, T-Mobile US has a GF Score™ of 84/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does T-Mobile US's Cyclically Adjusted Book per Share compare to VZ and T?
T-Mobile US's Cyclically Adjusted Book per Share of R$19.89 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 T-Mobile US and its competitors. T-Mobile US's current Cyclically Adjusted Book per Share is R$19.89. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is T-Mobile US stock overvalued right now?
Based on GuruFocus' analysis, T-Mobile US (BSP:T1MU34) is currently considered Modestly Undervalued. The stock's GF Value™ is R$87.53, compared to a current price of R$66.78 — trading 23.7% below its estimated fair value. The current Cyclically Adjusted Book per Share is R$19.89. T-Mobile US's overall GF Score™ is 84/100 with 1 warning sign 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 T-Mobile US (BSP:T1MU34), the current Cyclically Adjusted Book per Share is R$19.89 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 T-Mobile US (BSP:T1MU34) Overvalued in 2026?

Based on GuruFocus' analysis, T-Mobile US stock appears to be undervalued. The current stock price of R$66.78 is trading 23.7% below its estimated GF Value™ of R$87.53. GuruFocus considers T-Mobile US to be Modestly Undervalued.

Key valuation signals for BSP:T1MU34:

  • Cyclically Adjusted Book per Share: R$19.89
  • GF Value™: R$87.53 vs. price of R$66.78 (23.7% below fair value)
  • GF Score™: 84/100 with 1 warning sign

No single metric tells the full story. See the BSP:T1MU34 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


T-Mobile US Business Description

Address 12920 SE 38th Street, Bellevue, WA, USA, 98006-1350
Deutsche Telekom merged its T-Mobile USA unit with prepaid specialist MetroPCS in 2013, and that firm merged with Sprint in 2020, creating the second-largest wireless carrier in the US. T-Mobile now serves about 86 million postpaid and 26 million prepaid phone customers, equal to around 30% of the US retail wireless market. The firm entered the fixed-wireless broadband market aggressively in 2021 and now serves 8 million residential and business customers with its wireless network. It also serves 1 million fiber broadband customers through joint ventures with fiber network owners. T-Mobile owns a stake in these firms, which provide wholesale access to their networks. In addition, T-Mobile provides wholesale services to wireless resellers.
84GF Score

Get the complete analysis for BSP:T1MU34

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

R$66.78
Price
R$87.53
GF Value