National Presto IndustriesNPK -0.76%77 ROC (Joel Greenblatt) % is 6.55% as of Mar. 2026, which is 71% below its 10-year median of 22.60. GuruFocus rates NPK with a GF Scoreâ„¢ of 77/100 and a GF Valueâ„¢ of $122.39 (Fairly Valued). The stock has 3 warning signs investors should review. Among 354 Aerospace & Defense companies, National Presto Industries ranks better than 50.56% 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. National Presto Industries's annualized ROC (Joel Greenblatt) % for the quarter that ended in Mar. 2026 was 6.55%.
The historical rank and industry rank for National Presto Industries's ROC (Joel Greenblatt) % or its related term are showing as below:
NPK'
s ROC (Joel Greenblatt) % Range Over the Past 10 Years
Min: 10.79 Med: 22.6 Max: 31.87
Current: 10.79
During the past 13 years, National Presto Industries's highest ROC (Joel Greenblatt) % was 31.87%. The lowest was 10.79%. And the median was 22.60%.
NPK's ROC (Joel Greenblatt) % is ranked better than 50.56% of 354
companies
in the Aerospace & Defense industry
Industry Median: 10.77
vs NPK: 10.79
National Presto Industries's 5-Year average Growth Rate of ROC (Joel Greenblatt) % was -11.90% per year.
National Presto Industries (NYSE:NPK) 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.
* 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.
National Presto Industries ROC (Joel Greenblatt) % Chart
NPK vs EVEX, AVEX, PKE: ROC (Joel Greenblatt) % Comparison
For the Aerospace & Defense subindustry, National Presto Industries'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.
National Presto Industries ROC (Joel Greenblatt) % vs Aerospace & Defense Industry
For the Aerospace & Defense industry and Industrials sector, National Presto Industries's ROC (Joel Greenblatt) % distribution charts can be found below:
* The bar in red indicates where National Presto Industries's ROC (Joel Greenblatt) % falls into.
National Presto Industries 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:
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 6.55% mean?
National Presto Industries (NPK) has a ROC (Joel Greenblatt) % of 6.55% 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 National Presto Industries and its competitors. This is 71% below median its historical median of 22.60. Over the past decade, National Presto Industries' ROC (Joel Greenblatt) % has ranged from 10.79 to 31.87. According to the industry distribution chart, National Presto Industries ranks #175 out of 354 companies in the Aerospace & Defense industry, placing it in the top 49.4%.
Is National Presto Industries' ROC (Joel Greenblatt) % too high?
National Presto Industries' current ROC (Joel Greenblatt) % of 6.55% is 71% below median its 10-year median of 22.60. Over the past 10 years, this metric has ranged from a low of 10.79 to a high of 31.87. The Aerospace & Defense industry median ROC (Joel Greenblatt) % is 10.77. National Presto Industries' value of 6.55% is 39.2% below this industry median. Based on the distribution chart, National Presto Industries ranks #175 out of 354 companies in the Aerospace & Defense industry, which is above the industry midpoint. Overall, National Presto Industries has a GF Scoreâ„¢ of 77/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does National Presto Industries' ROC (Joel Greenblatt) % compare to EVEX and AVEX?
According to the Aerospace & Defense industry distribution chart, National Presto Industries ranks #175 out of 354 companies for ROC (Joel Greenblatt) %. This puts National Presto Industries in the upper half of its industry. The industry median ROC (Joel Greenblatt) % is 10.77. National Presto Industries' value of 6.55% is 39.2% below this benchmark. Historically, National Presto Industries' own ROC (Joel Greenblatt) % has ranged from 10.79 to 31.87 over the past decade. While the company's 10-year median is 22.60 vs. the industry median of 10.77, National Presto Industries has consistently been below 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 an Aerospace & Defense company?
The median ROC (Joel Greenblatt) % among Aerospace & Defense companies is 10.77, based on 354 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. National Presto Industries's current ROC (Joel Greenblatt) % of 6.55% is 39.2% 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 National Presto Industries and its competitors. For the Aerospace & Defense industry, the median ROC (Joel Greenblatt) % is 10.77 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. National Presto Industries's current ROC (Joel Greenblatt) % is 6.55%, which is 71% below median its own 10-year median of 22.60. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is National Presto Industries stock overvalued right now?
Based on GuruFocus' analysis, National Presto Industries (NPK) is currently considered Fairly Valued. The stock's GF Value™ is $122.39, compared to a current price of $123.28 — trading 0.7% above its estimated fair value. The current ROC (Joel Greenblatt) % is 6.55%, which is 71% below median its 10-year median of 22.60 and 39.2% below the Aerospace & Defense industry median of 10.77. National Presto Industries' overall GF Score™ is 77/100 with 3 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 National Presto Industries (NPK), the current ROC (Joel Greenblatt) % is 6.55% 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 National Presto Industries (NPK) Overvalued in 2026?
Based on GuruFocus' analysis, National Presto Industries stock appears to be overvalued.
The current stock price of $123.28 is trading 0.7% above its estimated GF Value™ of $122.39.
GuruFocus considers National Presto Industries to be Fairly Valued.
Key valuation signals for NPK:
ROC (Joel Greenblatt) %: 6.55% (71% below median its 10-year median of 22.60)
GF Value™: $122.39 vs. price of $123.28 (0.7% above fair value)
Industry Position: 39.2% below the Aerospace & Defense median (#175 of 354)
No single metric tells the full story. See the NPK stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
National Presto Industries Inc has an electric product portfolio consisting of household appliances, ammunition, and diapers. The company operates in three segments, namely Defense, Housewares/Small Appliance, and Safety. The defense segment, which is engaged in manufacturing 40mm ammunition, precision mechanical and electro-mechanical assemblies, and medium caliber cartridge cases, performs Load, Assemble, and Pack (LAP) operations on ordnance-related products for the U.S. Government and prime contractor. While the Housewares/Small Appliance segment designs, markets, and distributes housewares and small electrical appliances, the safety segment provides safety technology empowering organizations and individuals to protect what is more important.
77GF Score
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