SDI GroupSDIIF 93 Piotroski F-Score is 6 as of Jun. 25, 2026, which is at its 10-year median of 6.00. GuruFocus rates SDIIF with a GF Score™ of 93/100 and a GF Value™ of $1.31 (Modestly Undervalued). The stock has 4 warning signs investors should review. Among 2,425 Hardware companies, SDI Group ranks better than 77.81% on this metric.
The zones of discrimination were as such:
Good or high score = 7, 8, 9
Bad or low score = 0, 1, 2, 3
SDI Group has an F-score of 6 indicating the company's financial situation is typical for a stable company.
The historical rank and industry rank for SDI Group's Piotroski F-Score or its related term are showing as below:
SDIIF'
s Piotroski F-Score Range Over the Past 10 Years
Min: 4 Med: 6 Max: 7
Current: 6
During the past 13 years, the highest Piotroski F-Score of SDI Group was 7. The lowest was 4. And the median was 6.
SDI Group (OTCPK:SDIIF) Piotroski F-Score Explanation
The developer of the system is Joseph D. Piotroski is relatively unknown accounting professor who shuns publicity and rarely gives interviews.
He graduated from the University of Illinois with a B.S. in accounting in 1989, received an M.B.A. from Indiana University in 1994. Five years later, in 1999, after earning a Ph.D. in accounting from the University of Michigan, he became an associate professor of accounting at the University of Chicago.
He wanted to see if he can develop a system (using a simple nine-point scoring system) that can increase the returns of a strategy of investing in low price to book (referred to in the paper as high book to market) value companies.
What he found was something that exceeded his most optimistic expectations.
Buying only those companies that scored highest (8 or 9) on his nine-point scale, or F-Score as he called it, over the 20 year period from 1976 to 1996 led to an average out-performance over the market of 13.4%.
Even more impressive were the results of a strategy of investing in the highest F-Score companies (8 or 9) and shorting companies with the lowest F-Score (0 or 1).
Over the same period from 1976 to 1996 (20 years) this strategy led to an average yearly return of 23%, substantially outperforming the average S&P 500 index return of 15.83% over the same period.
SDI Group Piotroski F-Score Related Terms
SDI Group Piotroski F-Score Historical Data
* Premium members only.
The historical data trend for SDI Group's Piotroski F-Score 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: Piotroski F-Score Comparison
For the Scientific & Technical Instruments subindustry, SDI Group's Piotroski F-Score, along with its competitors' market caps and Piotroski F-Score 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 Piotroski F-Score vs Hardware Industry
For the Hardware industry and Technology sector, SDI Group's Piotroski F-Score distribution charts can be found below:
* The bar in red indicates where SDI Group's Piotroski F-Score falls into.
* 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.
*Note: If the latest quarterly/semi-annual/annual total assets data is 0, then we will use previous quarterly/semi-annual/annual data for all the items in the balance sheet.
Profitability
Question 1. Return on Assets (ROA)
Net income before extraordinary items for the year divided by Total Assets at the beginning of the year.
Score 1 if positive, 0 if negative.
SDI Group's current Net Income (TTM) was 5.24.
==> Positive ==> Score 1.
Question 2. Cash Flow Return on Assets (CFROA)
Net cash flow from operating activities (operating cash flow) divided by Total Assets at the beginning of the year.
SDI Group's return on assets of this year was 0.05122059. SDI Group's return on assets of last year was 0.05037484.
==> This year is higher. ==> Score 1.
Question 4. Quality of Earnings (Accrual)
Compare Cash flow return on assets (2) to return on assets (1)
SDI Group's current ratio of this year was 2.09047619. SDI Group's current ratio of last year was 2.35692565.
==> Last year's current ratio is higher ==> Score 0.
Question 7. Change in Shares in Issue
Compare the number of shares in issue this year, to the number in issue last year.
Score 0 if there is larger number of shares in issue this year, 1 otherwise.
SDI Group's number of shares in issue this year was 106.097. SDI Group's number of shares in issue last year was 105.254.
==> There is larger number of shares in issue this year. ==> Score 0.
Efficiency
Question 8. Change in Gross Margin
Compare this year's gross margin (Gross Profit divided by sales) to last year's.
Score 1 if this year's gross margin is higher, 0 if it's lower.
SDI Group's gross margin of this year was 0.64864709. SDI Group's gross margin of last year was 0.63099586.
==> This year's gross margin is higher. ==> Score 1.
Question 9. Change in asset turnover
Compare this year's asset turnover (total sales for the year divided by total assets at the beginning of the year) to last year's asset turnover ratio.
Score 1 if this year's asset turnover ratio is higher, 0 if it's lower
SDI Group's asset turnover of this year was 0.85084878. SDI Group's asset turnover of last year was 0.78403037.
==> This year's asset turnover is higher. ==> Score 1.
Evaluation
Piotroski F-Score
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6
Good or high score = 7, 8, 9
Bad or low score = 0, 1, 2, 3
SDI Group has an F-score of 6 indicating the company's financial situation is typical for a stable company.
SDI Group (SDIIF) has a Piotroski F-Score of 6 as of Jun. 25, 2026. The Piotroski F-score grades a company's business operating strength from 0-9. View historical data on SDI Group and its competitors. This is near median its historical median of 6.00. Over the past decade, SDI Group's Piotroski F-Score has ranged from 4.00 to 7.00. According to the industry distribution chart, SDI Group ranks #538 out of 2425 companies in the Hardware industry, placing it in the top 22.2%.
Is SDI Group's Piotroski F-Score too high?
SDI Group's current Piotroski F-Score of 6 is near median its 10-year median of 6.00. Over the past 10 years, this metric has ranged from a low of 4.00 to a high of 7.00. The Hardware industry median Piotroski F-Score is 5.00. SDI Group's value of 6 is 20% above this industry median. Based on the distribution chart, SDI Group ranks #538 out of 2425 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 Piotroski F-Score compare to COHR and KEYS?
According to the Hardware industry distribution chart, SDI Group ranks #538 out of 2425 companies for Piotroski F-Score. This places SDI Group in the top 22% of its industry — outperforming the majority of peers. The industry median Piotroski F-Score is 5.00. SDI Group's value of 6 is 20% above this benchmark. Historically, SDI Group's own Piotroski F-Score has ranged from 4.00 to 7.00 over the past decade. While the company's 10-year median is 6.00 vs. the industry median of 5.00, 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 Piotroski F-Score for a Hardware company?
The median Piotroski F-Score among Hardware companies is 5.00, based on 2,425 companies in the industry. Companies in the top quartile (top 25%) have a Piotroski F-Score significantly above this median, while those in the bottom quartile fall well below. However, Piotroski F-Score should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. SDI Group's current Piotroski F-Score of 6 is 20% 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 Piotroski F-Score mean?
A high Piotroski F-Score can signal that a stock is expensive relative to its fundamentals. The Piotroski F-score grades a company's business operating strength from 0-9. View historical data on SDI Group and its competitors. For the Hardware industry, the median Piotroski F-Score is 5.00 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. SDI Group's current Piotroski F-Score is 6, which is near median its own 10-year median of 6.00. 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 $1.31, compared to a current price of $1.05 — trading 19.8% below its estimated fair value. The current Piotroski F-Score is 6, which is near median its 10-year median of 6.00 and 20% above the Hardware industry median of 5.00. SDI Group's overall GF Score™ is 93/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Piotroski F-Score calculated?
Piotroski F-Score is calculated from a company's financial statements. For SDI Group (SDIIF), the current Piotroski F-Score is 6 as of Jun. 25, 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 (SDIIF) Overvalued in 2026?
Based on GuruFocus' analysis, SDI Group stock appears to be undervalued.
The current stock price of $1.05 is trading 19.8% below its estimated GF Value™ of $1.31.
GuruFocus considers SDI Group to be Modestly Undervalued.
Key valuation signals for SDIIF:
Piotroski F-Score: 6 (near median its 10-year median of 6.00)
GF Value™: $1.31 vs. price of $1.05 (19.8% below fair value)
Industry Position: 20% above the Hardware median (#538 of 2425)
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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