DialightDIALF -9.51%49 ROC (Joel Greenblatt) % is 1.63% as of Mar. 2026. GuruFocus rates DIALF with a GF Score™ of 49/100 and a GF Value™ of $2.00 (Significantly Overvalued). The stock has 7 warning signs investors should review. Among 3,060 Industrial Products companies, Dialight ranks better than 50.75% 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. Dialight's annualized ROC (Joel Greenblatt) % for the quarter that ended in Mar. 2026 was 1.63%.
The historical rank and industry rank for Dialight's ROC (Joel Greenblatt) % or its related term are showing as below:
DIALF'
s ROC (Joel Greenblatt) % Range Over the Past 10 Years
Min: -18.99 Med: -1.42 Max: 15.7
Current: 12.12
During the past 13 years, Dialight's highest ROC (Joel Greenblatt) % was 15.70%. The lowest was -18.99%. And the median was -1.42%.
DIALF's ROC (Joel Greenblatt) % is ranked better than 50.75% of 3060
companies
in the Industrial Products industry
Industry Median: 11.7
vs DIALF: 12.12
Dialight's 5-Year average Growth Rate of ROC (Joel Greenblatt) % was 0.00% per year.
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 Dialight'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.
DIALF vs VRT, BE: ROC (Joel Greenblatt) % Comparison
For the Electrical Equipment & Parts subindustry, Dialight'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.
Dialight ROC (Joel Greenblatt) % vs Industrial Products Industry
For the Industrial Products industry and Industrials sector, Dialight's ROC (Joel Greenblatt) % distribution charts can be found below:
* The bar in red indicates where Dialight'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 (Mar. 2026) 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 1.63% mean?
Dialight (DIALF) has a ROC (Joel Greenblatt) % of 1.63% as of Mar. 2026. Joel Greenblatt's return on capital is the ratio of EBIT to average fixed assets and net working capital. View historical data on Dialight and its competitors. According to the industry distribution chart, Dialight ranks #1507 out of 3060 companies in the Industrial Products industry, placing it in the top 49.2%.
Is Dialight's ROC (Joel Greenblatt) % too high?
Dialight's current ROC (Joel Greenblatt) % is 1.63%. The Industrial Products industry median ROC (Joel Greenblatt) % is 11.70. Dialight's value of 1.63% is 86.1% below this industry median. Based on the distribution chart, Dialight ranks #1507 out of 3060 companies in the Industrial Products industry, which is above the industry midpoint. Overall, Dialight has a GF Score™ of 49/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Dialight's ROC (Joel Greenblatt) % compare to VRT and BE?
According to the Industrial Products industry distribution chart, Dialight ranks #1507 out of 3060 companies for ROC (Joel Greenblatt) %. This puts Dialight in the upper half of its industry. The industry median ROC (Joel Greenblatt) % is 11.70. Dialight's value of 1.63% is 86.1% below this benchmark. 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 an Industrial Products company?
The median ROC (Joel Greenblatt) % among Industrial Products companies is 11.70, based on 3,060 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. Dialight's current ROC (Joel Greenblatt) % of 1.63% is 86.1% 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 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 Dialight and its competitors. For the Industrial Products industry, the median ROC (Joel Greenblatt) % is 11.70 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Dialight's current ROC (Joel Greenblatt) % is 1.63%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Dialight stock overvalued right now?
Based on GuruFocus' analysis, Dialight (DIALF) is currently considered Significantly Overvalued. The stock's GF Value™ is $2.00, compared to a current price of $4.90 — trading 145% above its estimated fair value. The current ROC (Joel Greenblatt) % is 1.63% and 86.1% below the Industrial Products industry median of 11.70. Dialight's overall GF Score™ is 49/100 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 Dialight (DIALF), the current ROC (Joel Greenblatt) % is 1.63% as of Mar. 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 Dialight (DIALF) Overvalued in 2026?
Based on GuruFocus' analysis, Dialight stock appears to be overvalued.
The current stock price of $4.90 is trading 145% above its estimated GF Value™ of $2.00.
GuruFocus considers Dialight to be Significantly Overvalued.
Key valuation signals for DIALF:
ROC (Joel Greenblatt) %: 1.63%
GF Value™: $2.00 vs. price of $4.90 (145% above fair value)
Industry Position: 86.1% below the Industrial Products median (#1507 of 3060)
No single metric tells the full story. See the DIALF stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Dialight PLC manufactures and sells light-emitting diode (LED) lighting fixtures for use in hazardous and industrial locations. It provides lighting products to customers in industrial sectors including steel foundries, pulp and paper mills, automotive manufacturers, utility, and wastewater plants, and food and beverage processing plants. In addition, it provides specialist lighting products for hazardous industrial sites, including the oil and gas and mining sectors. Its segments are Lighting, Signals, and Components. The majority of the revenue is derived from the sale of LED lighting solutions and anti-collision obstruction lighting. Geographically it derives the majority of its revenue from North America.
49GF Score
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