Madison, Wisconsin-based Alliant Energy Corporation (LNT) operates as a utility holding company that provides regulated electricity and natural gas services. Valued at $18.7 billion by market cap, the company supplies electricity, natural gas, and water to residential and commercial customers.
Shares of this utility holding company have underperformed the broader market over the past year. LNT has gained 19.6% over this time frame, while the broader S&P 500 Index ($SPX) has rallied nearly 26.9%. However, in 2026, LNT stock is up 11.2%, surpassing the SPX’s 9.5% rise on a YTD basis.
