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SDI GroupSTU:SD0 71 PB Ratio is 1.75 as of Jul. 14, 2026, which is 34% below its 10-year median of 2.65. GuruFocus rates STU:SD0 with a GF Score™ of 71/100 and a GF Value™ of €1.00 (Fairly Valued). The stock has 4 warning signs investors should review. Among 2,421 Hardware companies, SDI Group ranks better than 60.18% on this metric.
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. As of today (2026-07-14), SDI Group's share price is €0.99. SDI Group's Book Value per Share for the quarter that ended in Oct. 2025 was €0.57. Hence, SDI Group's PB Ratio of today is 1.75.
The historical rank and industry rank for SDI Group's PB Ratio or its related term are showing as below:
STU:SD0'
s PB Ratio Range Over the Past 10 Years
Min: 0.9 Med: 2.65 Max: 9.08
Current: 1.79
During the past 13 years, SDI Group's highest PB Ratio was 9.08. The lowest was 0.90. And the median was 2.65.
STU:SD0's PB Ratio is ranked better than 60.18% of 2421
companies
in the Hardware industry
Industry Median: 2.29
vs STU:SD0: 1.79
During the past 12 months, SDI Group's average Book Value Per Share Growth Rate was 10.10% per year.
During the past 3 years, the average Book Value Per Share Growth Rate was 10.70% per year.
During the past 5 years, the average Book Value Per Share Growth Rate was 17.70% per year.
During the past 10 years, the average Book Value Per Share Growth Rate was 18.40% per year.
During the past 13 years, the highest 3-Year average Book Value Per Share Growth Rate of SDI Group was 25.80% per year. The lowest was -2.60% per year. And the median was 9.20% per year.
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.
SDI Group PB Ratio Related Terms
SDI Group PB Ratio Historical Data
* Premium members only.
The historical data trend for SDI Group'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 Scientific & Technical Instruments subindustry, SDI Group'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.
SDI Group PB Ratio vs Hardware Industry
For the Hardware industry and Technology sector, SDI Group's PB Ratio distribution charts can be found below:
* The bar in red indicates where SDI Group'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.
SDI Group's PB Ratio for today is calculated as follows:
* 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.
SDI Group (STU:SD0) has a PB Ratio of 1.75 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 SDI Group and its competitors. This is 34% below median its historical median of 2.65. Over the past decade, SDI Group's PB Ratio has ranged from 0.90 to 9.08. According to the industry distribution chart, SDI Group ranks #964 out of 2421 companies in the Hardware industry, placing it in the top 39.8%.
Is SDI Group's PB Ratio too high?
SDI Group's current PB Ratio of 1.75 is 34% below median its 10-year median of 2.65. Over the past 10 years, this metric has ranged from a low of 0.90 to a high of 9.08. The Hardware industry median PB Ratio is 2.29. SDI Group's value of 1.75 is 23.6% below this industry median. Based on the distribution chart, SDI Group ranks #964 out of 2421 companies in the Hardware industry, which is above the industry midpoint. Overall, SDI Group has a GF Score™ of 71/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does SDI Group's PB Ratio compare to COHR and KEYS?
According to the Hardware industry distribution chart, SDI Group ranks #964 out of 2421 companies for PB Ratio. This puts SDI Group in the upper half of its industry. The industry median PB Ratio is 2.29. SDI Group's value of 1.75 is 23.6% below this benchmark. Historically, SDI Group's own PB Ratio has ranged from 0.90 to 9.08 over the past decade. While the company's 10-year median is 2.65 vs. the industry median of 2.29, SDI Group 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 Hardware company?
The median PB Ratio among Hardware companies is 2.29, based on 2,421 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. SDI Group's current PB Ratio of 1.75 is 23.6% 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 SDI Group and its competitors. For the Hardware industry, the median PB Ratio is 2.29 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. SDI Group's current PB Ratio is 1.75, which is 34% below median its own 10-year median of 2.65. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is SDI Group stock overvalued right now?
Based on GuruFocus' analysis, SDI Group (STU:SD0) is currently considered Fairly Valued. The stock's GF Value™ is €1.00, compared to a current price of €0.99 — trading 1% below its estimated fair value. The current PB Ratio is 1.75, which is 34% below median its 10-year median of 2.65 and 23.6% below the Hardware industry median of 2.29. SDI Group's overall GF Score™ is 71/100 with 4 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 SDI Group (STU:SD0), the current PB Ratio is 1.75 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 SDI Group (STU:SD0) Overvalued in 2026?
Based on GuruFocus' analysis, SDI Group stock appears to be undervalued.
The current stock price of €0.99 is trading 1% below its estimated GF Value™ of €1.00.
GuruFocus considers SDI Group to be Fairly Valued.
Key valuation signals for STU:SD0:
PB Ratio: 1.75 (34% below median its 10-year median of 2.65)
GF Value™: €1.00 vs. price of €0.99 (1% below fair value)
Industry Position: 23.6% below the Hardware median (#964 of 2421)
No single metric tells the full story. See the STU:SD0 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
SDI Group PLC designs and manufactures scientific and technology products for use by the life science, healthcare, astronomy, consumer manufacturing, and art conservation markets through Synoptics, the Artemis, the Opus instruments, and Astles Control systems brands. The Digital Imaging segment incorporates the Synoptics brands Syngene, Synbiosis, Synoptics Health and Fistreem, the Atik brands Atik Cameras, Opus, and Quantum Scientific Imaging, and the Graticules Optics business. The Sensors & Control segment combines Sentek, Astles Control Systems, Applied Thermal Control, Thermal Exchange, MPB Industries, and Chell Instruments businesses. It operates in the UK, Europe, America, Rest of Asia, and Rest of the world segments. It derives majority of its revenues from the United Kingdom.
71GF Score
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