Merrillville, Indiana-based NiSource Inc. (NI) is an energy holding company that operates as a regulated natural gas and electric utility company in the United States. The company has a market cap of $20.8 billion and operates in two segments, Columbia Operations and NIPSCO Operations, and provides natural gas to residential, commercial, and industrial customers.
The energy supplier’s shares have lagged behind the broader market over the past year, growing 3.7% compared to the S&P 500 Index’s ($SPX) 21.5% surge. Moreover, in 2026, the stock has risen nearly 3.9%, underperforming the SPX’s 12.6% rise as well.
