Proximus (CHIX:PROXB) Cyclically Adjusted PB Ratio: (As of Jul. 18, 2026)

Author: Vera Yuan Vera Yuan
Vera Yuan
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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.

CHIX:PROXB Proximus SA CHIX:PROXB
57 GF Score
Price €6.42
GF Value €5.54
Valuation Modestly Overvalued
! 7 Warning Signs
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What is Proximus Cyclically Adjusted PB Ratio?

Shiller PE for Stocks: The True Measure of Stock Valuation


Proximus  (CHIX:PROXb) 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.


Proximus Cyclically Adjusted PB Ratio Related Terms


Proximus Cyclically Adjusted PB Ratio Historical Data

* Premium members only.

The historical data trend for Proximus'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.

Proximus Cyclically Adjusted PB Ratio Chart

Proximus 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 1.71 0.83 0.78 0.45 0.61

Proximus Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
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 0.60 0.72 0.65 0.61 0.00

CHIX:PROXB vs TMUS, VZ, T: Cyclically Adjusted PB Ratio Comparison

For the Telecom Services subindustry, Proximus'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.


Proximus Cyclically Adjusted PB Ratio vs Telecommunication Services Industry

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

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


CHIX:PROXB
57GF Score
Proximus SA CHIX:PROXB
Cyclically Adjusted PB Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
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Proximus 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.

Proximus's Cyclically Adjusted Book per Share for the quarter that ended in Mar. 2026 is calculated as:

For example, Proximus'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)
=0/136.5600*136.5600
=0.000

Current CPI (Mar. 2026) = 136.5600.

Proximus Quarterly Data

Book Value per Share CPI Adj_Book
201606 8.197 102.267 10.946
201609 8.641 102.118 11.555
201612 8.737 102.614 11.627
201703 9.125 103.972 11.985
201706 8.496 103.902 11.166
201709 8.923 104.170 11.697
201712 8.855 104.804 11.538
201803 9.673 105.419 12.530
201806 9.069 106.063 11.677
201809 9.494 106.618 12.160
201812 9.314 107.252 11.859
201903 9.720 107.876 12.304
201906 9.159 107.896 11.592
201909 9.567 107.470 12.157
201912 8.843 108.065 11.175
202003 9.310 108.550 11.712
202006 8.747 108.540 11.005
202009 9.210 108.441 11.598
202012 8.996 108.511 11.321
202103 9.130 109.522 11.384
202106 8.761 110.305 10.846
202109 9.144 111.543 11.195
202112 9.227 114.705 10.985
202203 9.701 118.620 11.168
202206 10.011 120.948 11.303
202209 10.571 124.120 11.631
202212 10.258 126.578 11.067
202303 10.512 126.528 11.345
202306 10.096 125.973 10.944
202309 10.489 127.083 11.271
202312 10.229 128.292 10.888
202403 10.579 130.552 11.066
202406 10.669 130.691 11.148
202409 11.167 130.968 11.644
202412 13.366 132.346 13.792
202503 13.704 134.348 13.930
202506 13.943 133.495 14.263
202509 14.084 133.740 14.381
202512 13.944 135.070 14.098
202603 0.000 136.560 0.000

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 Proximus (CHIX:PROXB) Overvalued in 2026?

Based on GuruFocus' analysis, Proximus stock appears to be overvalued. The current stock price of €6.42 is trading 15.8% above its estimated GF Value™ of €5.54. GuruFocus considers Proximus to be Modestly Overvalued.

Key valuation signals for CHIX:PROXB:

  • Cyclically Adjusted PB Ratio:
  • GF Value™: €5.54 vs. price of €6.42 (15.8% above fair value)
  • GF Score™: 57/100 with 7 warning signs

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


Proximus Business Description

Address Boulevard du Roi Albert II, 27 B, Proximus Towers, Brussels, BEL, B-1030
Proximus is the incumbent telecom operator in Belgium. The firm has around 45% share of the broadband market and 30% of the postpaid mobile market, competing with Telenet and Orange. Proximus is rolling out fiber to the home in Belgium and expects to have 95% of the country covered by 2032. Its international carrier services division, BICS, is one of the four largest in the world, serving more than 250 operators, which was strengthened with the acquisition of Telesign.
57GF Score

Get the complete analysis for CHIX:PROXB

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

€6.42
Price
€5.54
GF Value