NiSourceSTU:NOU +0.85%75 Net Margin % is 21.46% as of Mar. 2026, which is 122% above its 10-year median of 9.66. GuruFocus rates STU:NOU with a GF Score™ of 75/100 and a GF Value™ of €38.38. The stock has 11 warning signs investors should review. Among 501 Utilities - Regulated companies, NiSource ranks better than 71.06% on this metric.
Net margin is calculated as Net Income divided by its Revenue. NiSource's Net Income for the
three
months ended in Mar. 2026 was €439 Mil. NiSource's Revenue for the
three
months ended in Mar. 2026 was €2,044 Mil. Therefore, NiSource's net margin for the quarter that ended in Mar. 2026 was 21.46%.
The historical rank and industry rank for NiSource's Net Margin % or its related term are showing as below:
STU:NOU'
s Net Margin % Range Over the Past 10 Years
Min: -0.99 Med: 9.66 Max: 14.1
Current: 14.1
STU:NOU's Net Margin % is ranked better than 71.06% of 501
companies
in the Utilities - Regulated industry
Industry Median: 8.8
vs STU:NOU: 14.10
NiSource (STU:NOU) Net Margin % Explanation
Although Net Income and Earnings-per-Share (EPS) are the most widely used parameter in measuring a company's profitability and valuation, it is the least reliable. The reason is that reported earnings can be manipulated easily by adjusting any numbers such as Depreciation, Depletion and Amotorization and non-recurring items.
But the long term trend of the net margin is a good indicator of the competitiveness and health of the business.
NiSource Net Margin % Related Terms
NiSource Net Margin % Historical Data
* Premium members only.
The historical data trend for NiSource's Net 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 Utilities - Regulated Gas subindustry, NiSource's Net Margin %, along with its competitors' market caps and Net 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.
NiSource Net Margin % vs Utilities - Regulated Industry
For the Utilities - Regulated industry and Utilities sector, NiSource's Net Margin % distribution charts can be found below:
* The bar in red indicates where NiSource's Net Margin % falls into.
* 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.
NiSource (STU:NOU) has a Net Margin % of 21.46% as of Mar. 2026. Net margin is the ratio of total net income to net sales. View historical data on NiSource and its competitors. This is 122% above median its historical median of 9.66. According to the industry distribution chart, NiSource ranks #145 out of 501 companies in the Utilities - Regulated industry, placing it in the top 28.9%.
Is NiSource's Net Margin % too high?
NiSource's current Net Margin % of 21.46% is 122% above median its 10-year median of 9.66. The Utilities - Regulated industry median Net Margin % is 8.80. NiSource's value of 21.46% is 143.9% above this industry median. Based on the distribution chart, NiSource ranks #145 out of 501 companies in the Utilities - Regulated industry, which is above the industry midpoint. Overall, NiSource has a GF Score™ of 75/100, reflecting its overall financial health beyond just this single metric.
How does NiSource's Net Margin % compare to ATO and UGI?
According to the Utilities - Regulated industry distribution chart, NiSource ranks #145 out of 501 companies for Net Margin %. This puts NiSource in the upper half of its industry. The industry median Net Margin % is 8.80. NiSource's value of 21.46% is 143.9% above this benchmark. While the company's 10-year median is 9.66 vs. the industry median of 8.80, NiSource has consistently been above 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 Net Margin % for an Utilities - Regulated company?
The median Net Margin % among Utilities - Regulated companies is 8.80, based on 501 companies in the industry. Companies in the top quartile (top 25%) have a Net Margin % significantly above this median, while those in the bottom quartile fall well below. However, Net Margin % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. NiSource's current Net Margin % of 21.46% is 143.9% above 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 Net Margin % mean?
A high Net Margin % can signal that a stock is expensive relative to its fundamentals. Net margin is the ratio of total net income to net sales. View historical data on NiSource and its competitors. For the Utilities - Regulated industry, the median Net Margin % is 8.80 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. NiSource's current Net Margin % is 21.46%, which is 122% above median its own 10-year median of 9.66. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is NiSource stock overvalued right now?
NiSource (STU:NOU) has a current Net Margin % of 21.46%. The stock's GF Value™ is €38.38, compared to a current price of €41.76 — trading 8.8% above its estimated fair value. The current Net Margin % is 21.46%, which is 122% above median its 10-year median of 9.66 and 143.9% above the Utilities - Regulated industry median of 8.80. NiSource's overall GF Score™ is 75/100 with 11 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Net Margin % calculated?
Net Margin % is calculated from a company's financial statements. For NiSource (STU:NOU), the current Net Margin % is 21.46% 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 NiSource (STU:NOU) Overvalued in 2026?
Based on GuruFocus' analysis, NiSource stock appears to be overvalued.
The current stock price of €41.76 is trading 8.8% above its estimated GF Value™ of €38.38.
Key valuation signals for STU:NOU:
Net Margin %: 21.46% (122% above median its 10-year median of 9.66)
GF Value™: €38.38 vs. price of €41.76 (8.8% above fair value)
Industry Position: 143.9% above the Utilities - Regulated median (#145 of 501)
No single metric tells the full story. See the STU:NOU stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
NiSource is one of the nation's largest natural gas distribution companies with 2.4 million customers in Kentucky, Maryland, Ohio, Pennsylvania, and Virginia. NiSource also serves 1.4 million gas and electric customers in Indiana. The regulated electric utility owns 4 gigawatts of generation capacity, including coal, natural gas, and renewable energy.
75GF Score
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