Denison MinesDNN -3.06%58 Operating Margin % is -2,061.04% as of Mar. 2026. GuruFocus rates DNN with a GF Score™ of 58/100 and a GF Value™ of $1.87 (Significantly Overvalued). The stock has 7 warning signs investors should review. Among 130 Other Energy Sources companies, Denison Mines ranks worse than 98.46% on this metric.
Operating Margin % is calculated as Operating Income divided by its Revenue. Denison Mines's Operating Income for the
three
months ended in Mar. 2026 was $-16.61 Mil. Denison Mines's Revenue for the
three
months ended in Mar. 2026 was $0.81 Mil. Therefore, Denison Mines's Operating Margin % for the quarter that ended in Mar. 2026 was -2,061.04%.
Warning Sign:
Denison Mines Corp operating margin has been in a 5-year decline. The average rate of decline per year is -92.6%.
The historical rank and industry rank for Denison Mines's Operating Margin % or its related term are showing as below:
DNN'
s Operating Margin % Range Over the Past 10 Years
Min: -2636.06 Med: -165.04 Max: -96.2
Current: -1863.71
DNN's Operating Margin % is ranked worse than 98.46% of 130
companies
in the Other Energy Sources industry
Industry Median: 4.57
vs DNN: -1863.71
Denison Mines's 5-Year Average Operating Margin % Growth Rate was -92.60% per year.
Denison Mines's Operating Income for the
three
months ended in Mar. 2026 was $-16.61 Mil.
Its Operating Income for the trailing twelve months (TTM) ended in Mar. 2026 was $-62.98 Mil.
Just like Gross Margin %, it is important to see a company maintains its operating margin over time. Among the same industry, a company with higher operating margin is more efficient in its operation. It is also more stable during industry slowdown or recessions. Peter Lynch prefers those with higher margins than those with lower margins.
Be Aware
Operating Margin % can be manipulated by adjusting the rate of depreciation, depletion and amortization (DDA).
If a company is facing competition, its Operating Margin % may decline. Often the Operating Margin % declines well before the company's Revenue or even profit decline. Therefore, Operating Margin % is a very important indicator of whether the company is facing problems.
For instance, by 2012, Nokia (NOK)'s problems were well known and its stock had lost more than 90% of its market value since 2007. But Nokias Operating Margin % had already been in decline since 2002, although its Earnings per Share (Diluted) were still rising. Investors who paid attention to Operating Margin % would have avoided this huge loss. The same can be said for Research-in-Motion (RIMM).
Therefore, Operating Margin % is a very important screening filter for GuruFocus. GuruFocus's Buffett-Munger screener requires that the profit margin is either consistent or expanding. The Model Portfolio of the Buffett-Munger screener has outperformed the market every year since inception in 2009.
Denison Mines Operating Margin % Related Terms
Denison Mines Operating Margin % Historical Data
* Premium members only.
The historical data trend for Denison Mines's Operating Margin % 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.
For the Uranium subindustry, Denison Mines's Operating Margin %, along with its competitors' market caps and Operating Margin % 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.
Denison Mines Operating Margin % vs Other Energy Sources Industry
For the Other Energy Sources industry and Energy sector, Denison Mines's Operating Margin % distribution charts can be found below:
* The bar in red indicates where Denison Mines's Operating Margin % falls into.
Operating Margin % - also known as operating income margin, operating profit margin and return on sales (ROS) - is the ratio of Operating Income divided by net sales or Revenue, usually presented in percent.
Denison Mines's Operating Margin % for the fiscal year that ended in Dec. 2025 is calculated as
* 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 Operating Margin % of -2,061.04% mean?
Denison Mines (DNN) has a Operating Margin % of -2,061.04% as of Mar. 2026. Operating margin is the ratio of total operating income to net sales. View historical data on Denison Mines and its competitors. According to the industry distribution chart, Denison Mines ranks #128 out of 130 companies in the Other Energy Sources industry, placing it in the top 98.5%.
Is Denison Mines' Operating Margin % too high?
Denison Mines' current Operating Margin % is -2,061.04%. Based on the distribution chart, Denison Mines ranks #128 out of 130 companies in the Other Energy Sources industry, which is in the bottom quartile relative to peers. Overall, Denison Mines has a GF Score™ of 58/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Denison Mines' Operating Margin % compare to UEC and LEU?
According to the Other Energy Sources industry distribution chart, Denison Mines ranks #128 out of 130 companies for Operating Margin %. This places Denison Mines in the lower half of its industry. The industry median Operating Margin % is 4.57. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Operating Margin % for an Other Energy Sources company?
The median Operating Margin % among Other Energy Sources companies is 4.57, based on 130 companies in the industry. Companies in the top quartile (top 25%) have a Operating Margin % significantly above this median, while those in the bottom quartile fall well below. However, Operating Margin % 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 Operating Margin % mean?
A high Operating Margin % can signal that a stock is expensive relative to its fundamentals. Operating margin is the ratio of total operating income to net sales. View historical data on Denison Mines and its competitors. For the Other Energy Sources industry, the median Operating Margin % is 4.57 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Denison Mines's current Operating Margin % is -2,061.04%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Denison Mines stock overvalued right now?
Based on GuruFocus' analysis, Denison Mines (DNN) is currently considered Significantly Overvalued. The stock's GF Value™ is $1.87, compared to a current price of $3.17 — trading 69.5% above its estimated fair value. The current Operating Margin % is -2,061.04%. Denison Mines' overall GF Score™ is 58/100 with 7 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Operating Margin % calculated?
Operating Margin % is calculated from a company's financial statements. For Denison Mines (DNN), the current Operating Margin % is -2,061.04% 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 Denison Mines (DNN) Overvalued in 2026?
Based on GuruFocus' analysis, Denison Mines stock appears to be overvalued.
The current stock price of $3.17 is trading 69.5% above its estimated GF Value™ of $1.87.
GuruFocus considers Denison Mines to be Significantly Overvalued.
Key valuation signals for DNN:
Operating Margin %: -2,061.04%
GF Value™: $1.87 vs. price of $3.17 (69.5% above fair value)
No single metric tells the full story. See the DNN stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Denison Mines Corp is engaged in uranium mining-related activities, including the acquisition, exploration, development, and mining of uranium-bearing properties, as well as the processing, sale, and investment in uranium. The company's key properties include Wheeler River, Waterbury Lake, McClean Lake, Midwest, and others. It operates through two segments: the Mining segment and the Corporate and Other segment. The majority of the company's revenue is generated from the Mining segment, which includes activities related to exploration, evaluation, and development, mining, milling (including toll milling), and the sale of mineral concentrates.
58GF Score
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