NiSource Inc. (NI:NYSE) closed at $43.28 on October 23, 2026, down 0.94% on the day. The stock trades 12.1% below its 52-week high of $49.21 and 12.6% above its 52-week low of $38.42. Over the past year, it lost 0.8%. NiSource Inc. is part of the Public Utilities sector (Power Generation).
In 252 trading sessions since October 23, 2025, NI closed higher on 128 days (51%). Its best day was October 16, 2026 (+3.47%) and its worst was August 5, 2026 (-3.64%). It never moved 10% or more in a single session.
NiSource Inc., an energy holding company, operates as a regulated natural gas and electric utility company in the United States. The company operates through two segments, Gas Distribution Operations and Electric Operations. It provides natural gas service and transportation to residential, commercial, and industrial customers; generates, transmits, and distributes electricity; and provides wholesale and transmission transaction services. The company serves approximately 3.4 million natural gas customers and 466,000 electricity customers in Ohio, Pennsylvania, Virginia, Kentucky, Maryland, Indiana, and Massachusetts. It also owns and operates three coal-fired electric generating stations with a net capability of 2,540 megawatts (MW), three gas-fired generating units with a net capability of 196 MW, and two hydroelectric generating plants with a net capability of 10 MW, as well as a combined cycle gas turbine plant with a capacity of 535 MW. The company was formerly known as NIPSCO Industries, Inc. and changed its name to NiSource Inc. in April 1999. NiSource Inc. was founded in 1912 and is headquartered in Merrillville, Indiana.
Find more stocks like NI with the Spikes, Gaps, Breakouts and Performance Tracker scanners.
Based on end-of-day data. For information only, not investment advice.