T-Mobile US (FRA:TM5) Cyclically Adjusted PB Ratio: (As of Jul. 24, 2026)

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
Director of Data and Quant Analytics at GuruFocus
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.
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Charlie Tian
Charlie Tian
Founder & CEO of GuruFocus
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.

FRA:TM5 T-Mobile US Inc FRA:TM5
76 GF Score
Price €154.74
GF Value €209.16
Valuation Modestly Undervalued
! 3 Warning Signs
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What is T-Mobile US Cyclically Adjusted PB Ratio?

Shiller PE for Stocks: The True Measure of Stock Valuation


T-Mobile US  (FRA:TM5) Cyclically Adjusted PB Ratio Explanation

Compared with the regular PB Ratio, which works poorly for cyclical businesses, the Cyclically Adjusted PB Ratio smoothed out the fluctuations of book value during business cycles. Therefore it is more accurate in reflecting the valuation of the company.

If a company has consistent business performance, the Cyclically Adjusted PB Ratio should give similar results to regular PB Ratio.


T-Mobile US Cyclically Adjusted PB Ratio Related Terms


T-Mobile US Cyclically Adjusted PB Ratio Historical Data

* Premium members only.

The historical data trend for T-Mobile US's Cyclically Adjusted PB Ratio 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 PB Ratio Chart

T-Mobile US Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Cyclically Adjusted PB Ratio
Get a 7-Day Free Trial Premium Member Only Premium Member Only 3.66 3.83 3.90 4.88 4.13

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 PB Ratio 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 5.01 4.92 4.13 4.15 0.00

FRA:TM5 vs VZ, T, CMCSA: Cyclically Adjusted PB Ratio 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.


FRA:TM5
76GF Score
T-Mobile US Inc FRA:TM5
Cyclically Adjusted PB Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

T-Mobile US Cyclically Adjusted PB Ratio Calculation

Like the Shiller PE Ratio, the Cyclically Adjusted PB Ratio takes the Book Value per Share from the past 10 years, adjusts it for inflation, and then calculates the average. This average is then used for the P/B calculation. Because it considers this 10-year average, it's often referred to as the CAPB Ratio.

The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio.

T-Mobile US's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 is calculated as:

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)
=45.12/333.9520*333.9520
=45.120

Current CPI (Jun. 2026) = 333.9520.

T-Mobile US Quarterly Data

Book Value per Share CPI Adj_Book
201609 19.304 241.428 26.702
201612 20.920 241.432 28.937
201703 21.341 243.801 29.232
201706 21.006 244.955 28.638
201709 20.449 246.819 27.668
201712 22.181 246.524 30.047
201803 21.748 249.554 29.103
201806 23.632 251.989 31.319
201809 24.602 252.439 32.546
201812 25.556 251.233 33.970
201903 27.119 254.202 35.627
201906 27.931 256.143 36.416
201909 29.473 256.759 38.334
201912 30.237 256.974 39.295
202003 30.453 258.115 39.400
202006 45.210 257.797 58.565
202009 44.136 260.280 56.629
202012 43.254 260.474 55.456
202103 44.721 264.877 56.383
202106 44.875 271.696 55.158
202109 46.566 274.310 56.691
202112 48.955 278.802 58.639
202203 50.695 287.504 58.885
202206 52.832 296.311 59.543
202209 56.676 296.808 63.769
202212 53.288 296.797 59.959
202303 51.887 301.836 57.408
202306 51.412 305.109 56.272
202309 52.171 307.789 56.606
202312 49.626 306.746 54.027
202403 48.510 312.332 51.868
202406 49.872 314.175 53.011
202409 49.707 315.301 52.647
202412 51.515 315.605 54.510
202503 49.697 319.799 51.896
202506 46.991 322.561 48.650
202509 46.067 324.800 47.365
202512 45.675 324.054 47.070
202603 44.513 330.213 45.017
202606 45.120 333.952 45.120

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

Is T-Mobile US (FRA:TM5) Overvalued in 2026?

Based on GuruFocus' analysis, T-Mobile US stock appears to be undervalued. The current stock price of €154.74 is trading 26% below its estimated GF Value™ of €209.16. GuruFocus considers T-Mobile US to be Modestly Undervalued.

Key valuation signals for FRA:TM5:

  • Cyclically Adjusted PB Ratio:
  • GF Value™: €209.16 vs. price of €154.74 (26% below fair value)
  • GF Score™: 76/100 with 3 warning signs

No single metric tells the full story. See the FRA:TM5 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.
76GF Score

Get the complete analysis for FRA:TM5

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

€154.74
Price
€209.16
GF Value