With a market capitalization (market cap) of $20.19B — a measure of how much the company is worth — NiSource Inc is the 619th most valuable company in Utilities as of August 18, 2026. Shares trade at $42.12, down +0.60% on the day.
of 2,587
price ÷ annual EPS
FY 2025
FY 2025
FY 2025
FY 2025
FY 2025
FY 2025
FY 2025
FY 2025
FY 2025
FY 2025
FY 2025
FY 2025
FY 2025
FY 2025
FY 2025
FY 2025
FY 2025
NiSource Inc., an energy holding company, operates as a regulated natural gas and electric utility company in the United States. It operates in two segments, Columbia Operations and NIPSCO Operations. The company provides natural gas to residential, commercial, and industrial customers through approximately 37,300 miles of distribution main pipeline and the associated individual customer service lines; and 310 miles of transmission main pipeline in Ohio, Pennsylvania, Virginia, Kentucky, and Maryland. It also generates, transmits, and distributes electricity to approximately 0.5 million customers in various counties in the northern part of Indiana, as well as engages in wholesale electric and transmission transactions. It owns and operates steam coal generating stations in Wheatfield and Michigan City; combined cycle gas turbine in West Terre Haute; natural gas generating units in Wheatfield; hydro generating plants in Carroll County and White County; wind generating units in White County; and solar generating units in Sullivan County, Gibson County, Jasper County, and White County. The company was formerly known as NIPSCO Industries, Inc. and changed its name to NiSource Inc. in April 1999. NiSource Inc. was founded in 1847 and is headquartered in Merrillville, Indiana.
Visit websiteAs of August 18, 2026, NiSource Inc (NI) is worth $20.19B — this is its market capitalization, the total value of all its outstanding shares.
NiSource Inc’s market cap is $20.19B, which ranks it #619 among the most valuable companies in the Utilities sector tracked on MarketCapLens.
NiSource Inc (NI) shares trade at $42.12, down 0.60% on the day, as of August 18, 2026.
NiSource Inc trades at a price-to-earnings (P/E) ratio of 21.5, based on its latest share price and annual earnings per share.
Fundamentals are annual. Figures labeled with their fiscal year.
FY 2025