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. Perma-Fix Environmental Services's annualized ROC (Joel Greenblatt) % for the quarter that ended in Mar. 2026 was -111.97%.
The historical rank and industry rank for Perma-Fix Environmental Services's ROC (Joel Greenblatt) % or its related term are showing as below:
STU:PFX1'
s ROC (Joel Greenblatt) % Range Over the Past 10 Years
Min: -84.98 Med: -14.33 Max: 19.05
Current: -58.41
During the past 13 years, Perma-Fix Environmental Services's highest ROC (Joel Greenblatt) % was 19.05%. The lowest was -84.98%. And the median was -14.33%.
STU:PFX1's ROC (Joel Greenblatt) % is ranked worse than 86.29% of 248
companies
in the Waste Management industry
Industry Median: 11.035
vs STU:PFX1: -58.41
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.
* 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.
STU:PFX1 vs SGLA, ABAT, YDDL: ROC (Joel Greenblatt) % Comparison
For the Waste Management subindustry, Perma-Fix Environmental Services'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.
Perma-Fix Environmental Services ROC (Joel Greenblatt) % vs Waste Management Industry
For the Waste Management industry and Industrials sector, Perma-Fix Environmental Services's ROC (Joel Greenblatt) % distribution charts can be found below:
* The bar in red indicates where Perma-Fix Environmental Services'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 four times the quarterly (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 -111.97% mean?
Perma-Fix Environmental Services (STU:PFX1) has a ROC (Joel Greenblatt) % of -111.97% 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 Perma-Fix Environmental Services and its competitors. According to the industry distribution chart, Perma-Fix Environmental Services ranks #214 out of 248 companies in the Waste Management industry, placing it in the top 86.3%.
Is Perma-Fix Environmental Services' ROC (Joel Greenblatt) % too high?
Perma-Fix Environmental Services' current ROC (Joel Greenblatt) % is -111.97%. Based on the distribution chart, Perma-Fix Environmental Services ranks #214 out of 248 companies in the Waste Management industry, which is in the bottom quartile relative to peers. Overall, Perma-Fix Environmental Services has a GF Score™ of 46/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Perma-Fix Environmental Services' ROC (Joel Greenblatt) % compare to SGLA and ABAT?
According to the Waste Management industry distribution chart, Perma-Fix Environmental Services ranks #214 out of 248 companies for ROC (Joel Greenblatt) %. This places Perma-Fix Environmental Services in the lower half of its industry. The industry median ROC (Joel Greenblatt) % is 11.04. 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 Waste Management company?
The median ROC (Joel Greenblatt) % among Waste Management companies is 11.04, based on 248 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. 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 Perma-Fix Environmental Services and its competitors. For the Waste Management industry, the median ROC (Joel Greenblatt) % is 11.04 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Perma-Fix Environmental Services's current ROC (Joel Greenblatt) % is -111.97%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Perma-Fix Environmental Services stock overvalued right now?
Based on GuruFocus' analysis, Perma-Fix Environmental Services (STU:PFX1) is currently considered Significantly Overvalued. The stock's GF Value™ is €6.04, compared to a current price of €12.33 — trading 104.1% above its estimated fair value. The current ROC (Joel Greenblatt) % is -111.97%. Perma-Fix Environmental Services' overall GF Score™ is 46/100 with 4 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 Perma-Fix Environmental Services (STU:PFX1), the current ROC (Joel Greenblatt) % is -111.97% 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 Perma-Fix Environmental Services (STU:PFX1) Overvalued in 2026?
Based on GuruFocus' analysis, Perma-Fix Environmental Services stock appears to be overvalued.
The current stock price of €12.33 is trading 104.1% above its estimated GF Value™ of €6.04.
GuruFocus considers Perma-Fix Environmental Services to be Significantly Overvalued.
Key valuation signals for STU:PFX1:
ROC (Joel Greenblatt) %: -111.97%
GF Value™: €6.04 vs. price of €12.33 (104.1% above fair value)
No single metric tells the full story. See the STU:PFX1 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Perma-Fix Environmental Services Business Description
Perma-Fix Environmental Services Inc is a nuclear services company and provider of nuclear and mixed waste management services. The company's nuclear waste services include treatment and management of radioactive and mixed waste (waste containing both hazardous and low-level radioactive waste). The company operates through two segments: i) The treatment segment: It offers nuclear, low-level radioactive, Mixed, hazardous and non-hazardous waste treatment, processing and disposal services, and ii) the Services segment which generates the majority of the revenue, provides on-site waste management services to commercial and government customers, technology-based services, construction, logistics, and transportation services among others.
46GF Score
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