SDI GroupSDIIF 93 ROC (Joel Greenblatt) % is 24.24% as of Oct. 2025, which is 72% below its 10-year median of 85.31. GuruFocus rates SDIIF with a GF Score™ of 93/100 and a GF Value™ of $1.30 (Modestly Undervalued). The stock has 7 warning signs investors should review. Among 2,488 Hardware companies, SDI Group ranks better than 76.21% on this metric.
Joel Greenblatt defined Return on Capital differently in his book The Little Book That Still Beats the Market (Little Books. Big Profits). He defines ROC (Joel Greenblatt) % as EBIT divided by the total of Property, Plant and Equipment and net working capital. SDI Group's annualized ROC (Joel Greenblatt) % for the quarter that ended in Oct. 2025 was 24.24%.
The historical rank and industry rank for SDI Group's ROC (Joel Greenblatt) % or its related term are showing as below:
SDIIF'
s ROC (Joel Greenblatt) % Range Over the Past 10 Years
Min: 27.03 Med: 85.31 Max: 149.18
Current: 28.01
During the past 13 years, SDI Group's highest ROC (Joel Greenblatt) % was 149.18%. The lowest was 27.03%. And the median was 85.31%.
SDIIF's ROC (Joel Greenblatt) % is ranked better than 76.21% of 2488
companies
in the Hardware industry
Industry Median: 10.42
vs SDIIF: 28.01
SDI Group's 5-Year average Growth Rate of ROC (Joel Greenblatt) % was -25.40% per year.
SDI Group (OTCPK:SDIIF) ROC (Joel Greenblatt) % Explanation
The way Joel Greenblatt defines Return on Capital is a more accurate measure of how efficiently the company generates returns onthe capital actually invested in the business. EBIT is used instead of net income because the tax and interest payment may be affected by factors other than the core business operation. Intangible assets are not included in the calculation because they don't need to be replaced.
The historical data trend for SDI Group's ROC (Joel Greenblatt) % 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.
SDIIF vs COHR, KEYS, GRMN: ROC (Joel Greenblatt) % Comparison
For the Scientific & Technical Instruments subindustry, SDI Group's ROC (Joel Greenblatt) %, along with its competitors' market caps and ROC (Joel Greenblatt) % 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 ROC (Joel Greenblatt) % vs Hardware Industry
For the Hardware industry and Technology sector, SDI Group's ROC (Joel Greenblatt) % distribution charts can be found below:
* The bar in red indicates where SDI Group's ROC (Joel Greenblatt) % falls into.
Joel Greenblatt defined Return on Capital differently in his book The Little Book That Still Beats the Market (Little Books. Big Profits) . He defines Return on Capital as follows:
EBIT stands for Earnings Before Interest and Taxes.
Fixed Assets are also known as non-current assets. They include the Property, Plant and Equipment that the firm needs in its operation.
GuruFocus calculates net working capital as: (Accounts Receivable + Total Inventories + Other Current Assets) - (Accounts Payable & Accrued Expense + Deferred Revenue + Other Current Liabilities). We're trying to account for OPERATING assets and liabilities (part of daily business) when calculating working capital. Cash and marketable securities are considered NON-OPERATING assets and are not included in calculation. We will also back out all interest bearing debt, short term debt and the portion of long term debt that is due in the current period from the current liabilities. This debt will be considered when computing cost of capital and it would be inappropriate to count it twice.
Note:
The EBIT data used here is two times the semi-annual (Oct. 2025) EBIT data.
* 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.
What does a ROC (Joel Greenblatt) % of 24.24% mean?
SDI Group (SDIIF) has a ROC (Joel Greenblatt) % of 24.24% as of Oct. 2025. Joel Greenblatt's return on capital is the ratio of EBIT to average fixed assets and net working capital. View historical data on SDI Group and its competitors. This is 72% below median its historical median of 85.31. Over the past decade, SDI Group's ROC (Joel Greenblatt) % has ranged from 27.03 to 149.18. According to the industry distribution chart, SDI Group ranks #592 out of 2488 companies in the Hardware industry, placing it in the top 23.8%.
Is SDI Group's ROC (Joel Greenblatt) % too high?
SDI Group's current ROC (Joel Greenblatt) % of 24.24% is 72% below median its 10-year median of 85.31. Over the past 10 years, this metric has ranged from a low of 27.03 to a high of 149.18. The Hardware industry median ROC (Joel Greenblatt) % is 10.42. SDI Group's value of 24.24% is 132.6% above this industry median. Based on the distribution chart, SDI Group ranks #592 out of 2488 companies in the Hardware industry, which is in the top quartile — a strong position relative to peers. Overall, SDI Group has a GF Score™ of 93/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does SDI Group's ROC (Joel Greenblatt) % compare to COHR and KEYS?
According to the Hardware industry distribution chart, SDI Group ranks #592 out of 2488 companies for ROC (Joel Greenblatt) %. This places SDI Group in the top 24% of its industry — outperforming the majority of peers. The industry median ROC (Joel Greenblatt) % is 10.42. SDI Group's value of 24.24% is 132.6% above this benchmark. Historically, SDI Group's own ROC (Joel Greenblatt) % has ranged from 27.03 to 149.18 over the past decade. While the company's 10-year median is 85.31 vs. the industry median of 10.42, SDI Group has consistently been above 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 ROC (Joel Greenblatt) % for a Hardware company?
The median ROC (Joel Greenblatt) % among Hardware companies is 10.42, based on 2,488 companies in the industry. Companies in the top quartile (top 25%) have a ROC (Joel Greenblatt) % significantly above this median, while those in the bottom quartile fall well below. However, ROC (Joel Greenblatt) % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. SDI Group's current ROC (Joel Greenblatt) % of 24.24% is 132.6% above 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 ROC (Joel Greenblatt) % mean?
A high ROC (Joel Greenblatt) % can signal that a stock is expensive relative to its fundamentals. Joel Greenblatt's return on capital is the ratio of EBIT to average fixed assets and net working capital. View historical data on SDI Group and its competitors. For the Hardware industry, the median ROC (Joel Greenblatt) % is 10.42 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. SDI Group's current ROC (Joel Greenblatt) % is 24.24%, which is 72% below median its own 10-year median of 85.31. 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 (SDIIF) is currently considered Modestly Undervalued. The stock's GF Value™ is $1.30, compared to a current price of $1.05 — trading 19.2% below its estimated fair value. The current ROC (Joel Greenblatt) % is 24.24%, which is 72% below median its 10-year median of 85.31 and 132.6% above the Hardware industry median of 10.42. SDI Group's overall GF Score™ is 93/100 with 7 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is ROC (Joel Greenblatt) % calculated?
ROC (Joel Greenblatt) % is calculated from a company's financial statements. For SDI Group (SDIIF), the current ROC (Joel Greenblatt) % is 24.24% as of Oct. 2025. 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 (SDIIF) Overvalued in 2026?
Based on GuruFocus' analysis, SDI Group stock appears to be undervalued.
The current stock price of $1.05 is trading 19.2% below its estimated GF Value™ of $1.30.
GuruFocus considers SDI Group to be Modestly Undervalued.
Key valuation signals for SDIIF:
ROC (Joel Greenblatt) %: 24.24% (72% below median its 10-year median of 85.31)
GF Value™: $1.30 vs. price of $1.05 (19.2% below fair value)
Industry Position: 132.6% above the Hardware median (#592 of 2488)
No single metric tells the full story. See the SDIIF 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.
93GF Score
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