Lumen Technologies (STU:CYTH) Cyclically Adjusted PB Ratio: (As of Sep. 20, 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.
Reviewed by: Charlie Tian Charlie Tian
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.

STU:CYTH Lumen Technologies Inc STU:CYTH
55 GF Score
Price €5.54
GF Value €3.70
Valuation Significantly Overvalued
! 4 Warning Signs
View Full Analysis

What is Lumen Technologies Cyclically Adjusted PB Ratio?

Shiller PE for Stocks: The True Measure of Stock Valuation


Lumen Technologies  (STU:CYTH) 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.


Lumen Technologies Cyclically Adjusted PB Ratio Related Terms


Lumen Technologies Cyclically Adjusted PB Ratio Historical Data

* Premium members only.

The historical data trend for Lumen Technologies'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.

Lumen Technologies Cyclically Adjusted PB Ratio Chart

Lumen Technologies 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 0.54 0.25 0.09 0.34 0.52

Lumen Technologies 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 0.25 0.35 0.47 0.47 0.55

STU:CYTH vs LBRDA, IRDM, TDS: Cyclically Adjusted PB Ratio Comparison

For the Telecom Services subindustry, Lumen Technologies'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.


Lumen Technologies Cyclically Adjusted PB Ratio vs Telecommunication Services Industry

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

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


STU:CYTH
55GF Score
Lumen Technologies Inc STU:CYTH
Cyclically Adjusted PB Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Lumen Technologies 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.

Lumen Technologies's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 is calculated as:

For example, Lumen Technologies'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)
=-1.263/333.9520*333.9520
=-1.263

Current CPI (Jun. 2026) = 333.9520.

Lumen Technologies Quarterly Data

Book Value per Share CPI Adj_Book
201609 22.612 241.428 31.278
201612 23.243 241.432 32.150
201703 22.667 243.801 31.049
201706 20.871 244.955 28.454
201709 19.945 246.819 26.986
201712 18.297 246.524 24.786
201803 17.672 249.554 23.649
201806 18.253 251.989 24.190
201809 18.168 252.439 24.034
201812 16.058 251.233 21.345
201903 11.061 254.202 14.531
201906 11.029 256.143 14.379
201909 11.504 256.759 14.963
201912 11.009 256.974 14.307
202003 11.035 258.115 14.277
202006 10.925 257.797 14.152
202009 10.639 260.280 13.650
202012 8.317 260.474 10.663
202103 8.699 264.877 10.968
202106 8.932 271.696 10.979
202109 9.359 274.310 11.394
202112 10.172 278.802 12.184
202203 10.687 287.504 12.414
202206 11.321 296.311 12.759
202209 12.407 296.808 13.960
202212 9.704 296.797 10.919
202303 10.071 301.836 11.143
202306 2.077 305.109 2.273
202309 2.077 307.789 2.254
202312 0.374 306.746 0.407
202403 0.459 312.332 0.491
202406 0.428 314.175 0.455
202409 0.302 315.301 0.320
202412 0.442 315.605 0.468
202503 0.261 319.799 0.273
202506 -0.494 322.561 -0.511
202509 -0.973 324.800 -1.000
202512 -0.927 324.054 -0.955
202603 -1.110 330.213 -1.123
202606 -1.263 333.952 -1.263

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 Lumen Technologies (STU:CYTH) Overvalued in 2026?

Based on GuruFocus' analysis, Lumen Technologies stock appears to be overvalued. The current stock price of €5.54 is trading 49.7% above its estimated GF Value™ of €3.70. GuruFocus considers Lumen Technologies to be Significantly Overvalued.

Key valuation signals for STU:CYTH:

  • Cyclically Adjusted PB Ratio:
  • GF Value™: €3.70 vs. price of €5.54 (49.7% above fair value)
  • GF Score™: 55/100 with 4 warning signs

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


Lumen Technologies Business Description

Address 100 CenturyLink Drive, Monroe, LA, USA, 71203
Lumen Technologies is one of the largest telecommunications carriers serving global enterprises. The merger with Level 3 in 2017, the 2022 divestiture of much of its local phone business in rural areas, and the 2026 sale of its remaining consumer fiber network to AT&T have shifted the company's operations away from the legacy consumer business and toward enterprise services, which account for about 85%-90% of revenue. Lumen offers businesses a full suite of communications services, providing colocation and data center services, data transportation, phone service, and internet access.
55GF Score

Get the complete analysis for STU:CYTH

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

€5.54
Price
€3.70
GF Value