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.
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.
Boule Diagnostics ABOSTO:BOUL -0.26%47 PB Ratio is 0.86 as of Jul. 14, 2026, which is 73% below its 10-year median of 3.16. GuruFocus rates OSTO:BOUL with a GF Score™ of 47/100 and a GF Value™ of kr7.14 (Possible Value Trap). The stock has 2 warning signs investors should review. Among 788 Medical Devices & Instruments companies, Boule Diagnostics AB ranks better than 83.5% on this metric.
The historical rank and industry rank for Boule Diagnostics AB's PB Ratio or its related term are showing as below:
OSTO:BOUL'
s PB Ratio Range Over the Past 10 Years
Min: 0.64 Med: 3.16 Max: 7.2
Current: 0.86
During the past 13 years, Boule Diagnostics AB's highest PB Ratio was 7.20. The lowest was 0.64. And the median was 3.16.
OSTO:BOUL's PB Ratio is ranked better than 83.5% of 788
companies
in the Medical Devices & Instruments industry
Industry Median: 2.05
vs OSTO:BOUL: 0.86
During the past 12 months, Boule Diagnostics AB's average Book Value Per Share Growth Rate was -0.80% per year.
During the past 3 years, the average Book Value Per Share Growth Rate was -28.70% per year.
During the past 5 years, the average Book Value Per Share Growth Rate was -16.60% per year.
During the past 10 years, the average Book Value Per Share Growth Rate was -3.40% per year.
During the past 13 years, the highest 3-Year average Book Value Per Share Growth Rate of Boule Diagnostics AB was 21.70% per year. The lowest was -28.70% per year. And the median was 0.90% per year.
Back to Basics: PB Ratio
Boule Diagnostics AB (OSTO:BOUL) PB Ratio Explanation
The PB Ratio works the best for the businesses that earn most of their profit from their assets, e.g. banks and insurance companies.
Be Aware
Some businesses have very light assets, such as software companies or insurance agencies. The PB Ratio does not work well for these companies. Some companies even have negative equity, so the PB Ratio cannot be applied to them.
Boule Diagnostics AB PB Ratio Related Terms
Boule Diagnostics AB PB Ratio Historical Data
* Premium members only.
The historical data trend for Boule Diagnostics AB's 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.
For the Medical Devices subindustry, Boule Diagnostics AB's PB Ratio, along with its competitors' market caps and 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 PB Ratio vs Medical Devices & Instruments Industry
For the Medical Devices & Instruments industry and Healthcare sector, Boule Diagnostics AB's PB Ratio distribution charts can be found below:
* The bar in red indicates where Boule Diagnostics AB's PB Ratio falls into.
The PB Ratio, or Price-to-Book ratio, or Price/Book, is a financial ratio used to compare a company's market price to its Book Value per Share. It is a ratio widely used to value stocks.
* 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.
It can also be calculated from the numbers for the whole company:
A closely related ratio is called Price-to-Tangible-Book. The difference between Price-to-Tangible-Book and PB Ratio is that book value other than intangibles are used in the calculation.
Boule Diagnostics AB (OSTO:BOUL) has a PB Ratio of 0.86 as of Jul. 14, 2026. Price-to-Book ratio is the ratio of share price to a company's book value per share. View historical data on Boule Diagnostics AB and its competitors. This is 73% below median its historical median of 3.16. Over the past decade, Boule Diagnostics AB's PB Ratio has ranged from 0.64 to 7.20. According to the industry distribution chart, Boule Diagnostics AB ranks #130 out of 788 companies in the Medical Devices & Instruments industry, placing it in the top 16.5%.
Is Boule Diagnostics AB's PB Ratio too high?
Boule Diagnostics AB's current PB Ratio of 0.86 is 73% below median its 10-year median of 3.16. Over the past 10 years, this metric has ranged from a low of 0.64 to a high of 7.20. The Medical Devices & Instruments industry median PB Ratio is 2.05. Boule Diagnostics AB's value of 0.86 is 58% below this industry median. Based on the distribution chart, Boule Diagnostics AB ranks #130 out of 788 companies in the Medical Devices & Instruments industry, which is in the top quartile — a strong position relative to peers. Overall, Boule Diagnostics AB has a GF Score™ of 47/100 and is considered Possible Value Trap, reflecting its overall financial health beyond just this single metric.
How does Boule Diagnostics AB's PB Ratio compare to ABT and SYK?
According to the Medical Devices & Instruments industry distribution chart, Boule Diagnostics AB ranks #130 out of 788 companies for PB Ratio. This places Boule Diagnostics AB in the top 17% of its industry — outperforming the majority of peers. The industry median PB Ratio is 2.05. Boule Diagnostics AB's value of 0.86 is 58% below this benchmark. Historically, Boule Diagnostics AB's own PB Ratio has ranged from 0.64 to 7.20 over the past decade. While the company's 10-year median is 3.16 vs. the industry median of 2.05, Boule Diagnostics AB has consistently been below the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good PB Ratio for a Medical Devices & Instruments company?
The median PB Ratio among Medical Devices & Instruments companies is 2.05, based on 788 companies in the industry. Companies in the top quartile (top 25%) have a PB Ratio significantly above this median, while those in the bottom quartile fall well below. However, PB Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Boule Diagnostics AB's current PB Ratio of 0.86 is 58% below the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high PB Ratio mean?
A high PB Ratio can signal that a stock is expensive relative to its fundamentals. Price-to-Book ratio is the ratio of share price to a company's book value per share. View historical data on Boule Diagnostics AB and its competitors. For the Medical Devices & Instruments industry, the median PB Ratio is 2.05 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Boule Diagnostics AB's current PB Ratio is 0.86, which is 73% below median its own 10-year median of 3.16. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Boule Diagnostics AB stock overvalued right now?
Based on GuruFocus' analysis, Boule Diagnostics AB (OSTO:BOUL) is currently considered Possible Value Trap. The stock's GF Value™ is kr7.14, compared to a current price of kr3.80 — trading 46.8% below its estimated fair value. The current PB Ratio is 0.86, which is 73% below median its 10-year median of 3.16 and 58% below the Medical Devices & Instruments industry median of 2.05. Boule Diagnostics AB's overall GF Score™ is 47/100 with 2 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is PB Ratio calculated?
PB Ratio is calculated from a company's financial statements. For Boule Diagnostics AB (OSTO:BOUL), the current PB Ratio is 0.86 as of Jul. 14, 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 Boule Diagnostics AB (OSTO:BOUL) Overvalued in 2026?
Based on GuruFocus' analysis, Boule Diagnostics AB stock appears to be undervalued.
The current stock price of kr3.80 is trading 46.8% below its estimated GF Value™ of kr7.14.
GuruFocus considers Boule Diagnostics AB to be Possible Value Trap.
Key valuation signals for OSTO:BOUL:
PB Ratio: 0.86 (73% below median its 10-year median of 3.16)
GF Value™: kr7.14 vs. price of kr3.80 (46.8% below fair value)
Industry Position: 58% below the Medical Devices & Instruments median (#130 of 788)
No single metric tells the full story. See the OSTO:BOUL stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
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.
47GF Score
Get the complete analysis for OSTO:BOUL
PB Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
OSTO:BOUL has been successfully added to your 
