Dallas, Texas-based Atmos Energy Corporation (ATO) distributes natural gas. With a market cap of $28.4 billion, the company provides natural gas marketing and procurement services to large customers, as well as manages storage and pipeline assets.
Shares of this leading natural gas utility have underperformed the broader market over the past year. ATO has declined slightly over this time frame, while the broader S&P 500 Index ($SPX) has rallied nearly 18.3%. In 2026, ATO stock is up marginally, compared to the SPX’s 11.8% rise on a YTD basis.