NiSource
NiSource Inc. is an energy holding company that operates as a fully regulated utility provider serving approximately 3.8 million customers across six states. The company's website is www.nisource.com. From the company’s description.
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. is an energy holding company that operates as a fully regulated utility provider serving approximately 3.8 million customers across six states. The company's website is www.nisource.com.
NiSource's business centers on two primary reportable segments: Columbia Operations and NIPSCO Operations. Columbia Operations provides natural gas distribution to approximately 2.4 million residential, commercial, and industrial customers across Ohio, Pennsylvania, Virginia, Kentucky, and Maryland. The segment operates roughly 37,300 miles of distribution main pipeline and 310 miles of transmission main pipeline, supported by owned storage facilities including propane and propane-air gas storage. NIPSCO Operations comprises both gas and electric utilities serving northern Indiana, with approximately 0.9 million gas customers and 0.5 million electric customers across 20 counties. NIPSCO Gas operates approximately 18,100 miles of distribution main pipeline and 720 miles of transmission main pipeline, while NIPSCO Electric generates, transmits, and distributes electricity through a transmission system with voltages ranging from 69,000 to 765,000 volts.
The company employs 7,668 full-time and 70 part-time employees, with 32 percent of the workforce subject to collective bargaining agreements. NiSource's generation portfolio includes eight renewable facilities, two hydroelectric plants, one combined-cycle gas turbine facility, and two coal-fired plants. The company also operates multiple power purchase agreements providing approximately 1,200 megawatts of capacity.
NiSource's strategic focus emphasizes safe and reliable service through rate-regulated, asset-based utilities while advancing infrastructure investment and environmental programs. In 2025, the company entered into a significant agreement with Amazon Data Services to provide electric service through generation assets developed by subsidiary GenCo. The company maintains a net zero greenhouse gas emissions goal by 2040 covering both Scope 1 and Scope 2 emissions, having already reduced Scope 1 emissions by approximately 72 percent from 2005 levels. NiSource derives substantially all revenues and earnings from its regulated utility operations across its service territories.
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 4.83%, 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.
Compare this company with peers, find it in your funds and follow its financial history with your connected AI:
- “How do NiSource and its peers compare on margins and cash generation over ten years?”
- “Where did five years of NiSource's earnings go — cash, debt, buybacks, reinvestment?”
- “What changed in NiSource's last four quarterly filings that the numbers alone won't show?”