ERock (EROC) ROC (Joel Greenblatt) %: -85.01% (As of Dec. 2025)


EROC ERock Inc EROC
8 GF Score
Price $13.76
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What is ERock ROC (Joel Greenblatt) %?

ERock EROC -6.65% 8 ROC (Joel Greenblatt) % is -85.01% as of Dec. 2025. GuruFocus rates EROC with a GF Score™ of 8/100. The stock has 1 warning sign investors should review. Among 3,061 Industrial Products companies, ERock ranks worse than 94.74% 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. ERock's annualized ROC (Joel Greenblatt) % for the quarter that ended in Dec. 2025 was -85.01%.

The historical rank and industry rank for ERock's ROC (Joel Greenblatt) % or its related term are showing as below:

EROC' s ROC (Joel Greenblatt) % Range Over the Past 10 Years
Min: -97.88   Med: -91.45   Max: -85.01
Current: -85.01

During the past 2 years, ERock's highest ROC (Joel Greenblatt) % was -85.01%. The lowest was -97.88%. And the median was -91.45%.

EROC's ROC (Joel Greenblatt) % is ranked worse than
94.74% of 3061 companies
in the Industrial Products industry
Industry Median: 11.78 vs EROC: -85.01

ERock's 5-Year average Growth Rate of ROC (Joel Greenblatt) % was 0.00% per year.


ERock  (NYSE:EROC) 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.

Joel Greenblatt uses his definition of Return on Capital and Earnings Yield (Joel Greenblatt) % to rank companies.


ERock ROC (Joel Greenblatt) % Related Terms


ERock ROC (Joel Greenblatt) % Historical Data

* Premium members only.

The historical data trend for ERock'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.

ERock ROC (Joel Greenblatt) % Chart

ERock Annual Data
Trend Dec24 Dec25
ROC (Joel Greenblatt) %
-97.88 -85.01

ERock Semi-Annual Data
Dec24 Dec25
ROC (Joel Greenblatt) % -97.88 -85.01

EROC vs : ROC (Joel Greenblatt) % Comparison

For the Specialty Industrial Machinery subindustry, ERock'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.


ERock ROC (Joel Greenblatt) % vs Industrial Products Industry

For the Industrial Products industry and Industrials sector, ERock's ROC (Joel Greenblatt) % distribution charts can be found below:

* The bar in red indicates where ERock's ROC (Joel Greenblatt) % falls into.


EROC
8GF Score
ERock Inc EROC
ROC (Joel Greenblatt) % is just one metric. See GF Score™, valuation, warning signs, and more.
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ERock ROC (Joel Greenblatt) % Calculation

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:

ROC (Joel Greenblatt) %=EBIT/Average of (Net fixed Assets + Net Working Capital)

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.

Working Capital(Q: Dec. 2024 )
=(Accounts Receivable + Total Inventories + Other Current Assets) - (Accounts Payable & Accrued Expense + Defer. Rev. + Other Current Liabilities)
=(28.633 + 80.487 + 20.194) - (46.921 + 74.529 + 2.961)
=4.903

Working Capital(Q: Dec. 2025 )
=(Accounts Receivable + Total Inventories + Other Current Assets) - (Accounts Payable & Accrued Expense + Defer. Rev. + Other Current Liabilities)
=(33.762 + 43.681 + 15.366) - (41.456 + 194.623 + 0.34399999999999)
=-143.614

When net working capital is negative, 0 is used.

So ROC (Joel Greenblatt) % of ERock for the quarter that ended in Dec. 2025 can be restated as:

ROC (Joel Greenblatt) %(Q: Dec. 2025 )
=EBIT/Average of (Net fixed Assets + Net Working Capital)
=EBIT/Average of (Property, Plant and Equipment+Net Working Capital)
     Q: Dec. 2024  Q: Dec. 2025
=EBIT/( ( (Property, Plant and Equipment + Net Working Capital) + (Property, Plant and Equipment + Net Working Capital) )/ count )
=-34.74/( ( (38.451 + max(4.903, 0)) + (38.377 + max(-143.614, 0)) )/ 2 )
=-34.74/( ( 43.354 + 38.377 )/ 2 )
=-34.74/40.8655
=-85.01 %

Note: The EBIT data used here is one times the annual (Dec. 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 -85.01% mean?
ERock (EROC) has a ROC (Joel Greenblatt) % of -85.01% as of Dec. 2025. Joel Greenblatt's return on capital is the ratio of EBIT to average fixed assets and net working capital. View historical data on ERock and its competitors. According to the industry distribution chart, ERock ranks #2900 out of 3061 companies in the Industrial Products industry, placing it in the top 94.7%.
Is ERock's ROC (Joel Greenblatt) % too high?
ERock's current ROC (Joel Greenblatt) % is -85.01%. Based on the distribution chart, ERock ranks #2900 out of 3061 companies in the Industrial Products industry, which is in the bottom quartile relative to peers. Overall, ERock has a GF Score™ of 8/100, reflecting its overall financial health beyond just this single metric.
How does ERock's ROC (Joel Greenblatt) % compare to ?
According to the Industrial Products industry distribution chart, ERock ranks #2900 out of 3061 companies for ROC (Joel Greenblatt) %. This places ERock in the lower half of its industry. The industry median ROC (Joel Greenblatt) % is 11.78. 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 11.78, based on 3,061 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 ERock and its competitors. For the Industrial Products industry, the median ROC (Joel Greenblatt) % is 11.78 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. ERock's current ROC (Joel Greenblatt) % is -85.01%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is ERock stock overvalued right now?
ERock (EROC) has a current ROC (Joel Greenblatt) % of -85.01%. The current ROC (Joel Greenblatt) % is -85.01%. ERock's overall GF Score™ is 8/100 with 1 warning sign 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 ERock (EROC), the current ROC (Joel Greenblatt) % is -85.01% as of Dec. 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.

ERock Business Description

Comparable Companies
Other Exchanges 5E7:Germany
Address 1113 Vine Street, Suite 101, Houston, TX, USA, 77002
ERock Inc is a vertically integrated company that designs, deploys, operates and maintains multi-purpose distributed power systems, consisting of its proprietary, low emission, quick-response natural gas generator and embedded software technology, for its customers. Its systems are used for bridge power, backup power, and dispatchable power applications, and are supported by operations, maintenance, and asset management services. The company's modular power systems are designed for rapid deployment and are used to support a range of customer power requirements. The company derives the majority of revenue from power system sales.
8GF Score

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ROC (Joel Greenblatt) % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

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