NiSource
NiSource Inc. (NYSE: NI) is an energy holding company whose primary subsidiaries operate fully regulated natural gas and electric utilities serving approximately 3.8 million customers across six states. Its Columbia Operations segment distributes natural gas to about 2.4 million residential, commercial and industrial… From the company’s description.
In fiscal 2025, NiSource reported revenue of $6.64B, up 21.8% from fiscal 2024, and net income of $1.01B. Its operating margin was 27.6%, and operations generated $2.36B in cash. Over the twelve months to Jun 30, 2026, revenue was $6.88B.
Margins and return on equity change in ; everything else in percent. Fewer shares and less debt are shown plainly, not as bad news — it depends what you make of buybacks. Dotted labels explain each measure. is shown separately from the annual figures.
What NiSource does
In the company’s own words
NiSource Inc. (NYSE: NI) is an energy holding company whose primary subsidiaries operate fully regulated natural gas and electric utilities serving approximately 3.8 million customers across six states. Its Columbia Operations segment distributes natural gas to about 2.4 million residential, commercial and industrial customers in Ohio, Pennsylvania, Virginia, Kentucky and Maryland, while NIPSCO Operations provides gas and electric service in northern Indiana, including natural gas distribution and electricity generation, transmission and distribution. The company is also developing generation resources to supply data center customers under a customized electricity agreement. In 2025, NiSource reported 7,738 active full- and part-time employees. Its utility operations include the Columbia gas distribution companies and Northern Indiana Public Service Company; the company’s history traces to NIPSCO Industries, which adopted the NiSource name in 1999. Its website is www.nisource.com.
Company details
- Sector
- Utilities
- Industry (SIC)
- Electric, Gas & Water
- Headquarters
- MERRILLVILLE, IN
- Fiscal year end
- December
- CIK
- 1111711
- SIC
- 4931
Financial performance, year by year
Fiscal 2013–2025 · USDThe full income statement, balance sheet and cash flow for each of these years — every figure traceable to its filing — is on the Financials tab with a free account.
Who owns NiSource — and what changed
Funds as of 2026Q2 · superinvestors as of 2026-06-30
Largest fund holders · NiSource’s weight in each
Fund ownership is a floor, not a census — pensions, insurers and people holding shares directly are not visible here.
NiSource’s bonds, as funds hold them
Funds report holding 23 issues of NiSource’s debt, $3.72B at market value — what funds hold, not the company’s total debt. Weighted-average coupon 4.75%, maturing 2027 to 2056.
Fund ownership counts N-PORT filers only, so it is a floor rather than a census — pensions, insurers and direct holders are not visible here, and the remainder is not “held by individuals”.
Every fund and institutional holder, quarter by quarter, is on the Ownership tab with a free account.
Recent filings
All filings →Each filing opens into its own statements and disclosures here.
Put this business in context.
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- “How do NiSource and its peers compare on margins and cash generation over ten years?”
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