Boule Diagnostics AB (STU:8BD) Cyclically Adjusted PB Ratio: (As of Sep. 20, 2026)

Author: Vera Yuan Vera Yuan
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Director of Data and Quant Analytics at GuruFocus
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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:8BD Boule Diagnostics AB STU:8BD
40 GF Score
Price €0.48
GF Value €1.12
! 4 Warning Signs
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What is Boule Diagnostics AB Cyclically Adjusted PB Ratio?

Shiller PE for Stocks: The True Measure of Stock Valuation


Boule Diagnostics AB  (STU:8BD) 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.


Boule Diagnostics AB Cyclically Adjusted PB Ratio Related Terms


Boule Diagnostics AB Cyclically Adjusted PB Ratio Historical Data

* Premium members only.

The historical data trend for Boule Diagnostics AB'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.

Boule Diagnostics AB Cyclically Adjusted PB Ratio Chart

Boule Diagnostics AB 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 3.38 1.22 0.80 0.65 0.41

Boule Diagnostics AB 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 0.64 0.40 0.40 0.44 0.44

STU:8BD vs ABT, SYK, MDT: Cyclically Adjusted PB Ratio Comparison

For the Medical Devices subindustry, Boule Diagnostics AB'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.


Boule Diagnostics AB Cyclically Adjusted PB Ratio vs Medical Devices & Instruments Industry

For the Medical Devices & Instruments industry and Healthcare sector, Boule Diagnostics AB's Cyclically Adjusted PB Ratio distribution charts can be found below:

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


STU:8BD
40GF Score
Boule Diagnostics AB STU:8BD
Cyclically Adjusted PB Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
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Boule Diagnostics AB 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.

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

For example, Boule Diagnostics AB'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)
=0.407/134.6100*134.6100
=0.407

Current CPI (Jun. 2026) = 134.6100.

Boule Diagnostics AB Quarterly Data

Book Value per Share CPI Adj_Book
201609 0.872 101.138 1.161
201612 0.902 102.022 1.190
201703 0.932 102.022 1.230
201706 0.869 102.752 1.138
201709 0.947 103.279 1.234
201712 0.971 103.793 1.259
201803 0.985 103.962 1.275
201806 1.013 104.875 1.300
201809 1.055 105.679 1.344
201812 1.083 105.912 1.376
201903 1.101 105.886 1.400
201906 1.048 106.742 1.322
201909 1.134 107.214 1.424
201912 1.155 107.766 1.443
202003 1.185 106.563 1.497
202006 1.038 107.498 1.300
202009 1.089 107.635 1.362
202012 0.977 108.296 1.214
202103 0.988 108.360 1.227
202106 0.943 108.928 1.165
202109 0.985 110.338 1.202
202112 1.048 112.486 1.254
202203 1.068 114.825 1.252
202206 1.066 118.384 1.212
202209 1.128 122.296 1.242
202212 1.071 126.365 1.141
202303 1.068 127.042 1.132
202306 1.051 129.407 1.093
202309 1.085 130.224 1.122
202312 1.099 131.912 1.121
202403 1.111 132.205 1.131
202406 1.126 132.716 1.142
202409 0.580 132.304 0.590
202412 0.442 132.987 0.447
202503 0.411 132.825 0.417
202506 0.372 133.699 0.375
202509 0.393 133.480 0.396
202512 0.399 133.380 0.403
202603 0.402 133.550 0.405
202606 0.407 134.610 0.407

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 Boule Diagnostics AB (STU:8BD) Overvalued in 2026?

Based on GuruFocus' analysis, Boule Diagnostics AB stock appears to be undervalued. The current stock price of €0.48 is trading 57.1% below its estimated GF Value™ of €1.12.

Key valuation signals for STU:8BD:

  • Cyclically Adjusted PB Ratio:
  • GF Value™: €1.12 vs. price of €0.48 (57.1% below fair value)
  • GF Score™: 40/100 with 4 warning signs

No single metric tells the full story. See the STU:8BD stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Boule Diagnostics AB Business Description

Other Exchanges BOUL:Sweden
Address Fagerstagatan 7, Spanga, SWE, SE-163 53
Boule Diagnostics AB is a company operating in the diagnostics market. It is engaged in the development, manufacturing and marketing instruments and consumables for blood diagnostics. The systems are intended for small and medium-sized hospitals, clinics and laboratories within outpatient care. the company operating through two complementary business segments: Diagnostics and OEM CDS. Through its subsidiaries, the company operates in USA ,Asia, Eastern Europe, Latin America Western Europe and Africa / Middle East. The majority revenue is generated from Asia.
40GF Score

Get the complete analysis for STU:8BD

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

€0.48
Price
€1.12
GF Value