Dallas, Texas-based Atmos Energy Corporation (ATO) is one of the largest fully regulated natural-gas utilities in the U.S., serving more than three million customers across states such as Texas, Colorado, Kansas, and Tennessee. With a market cap of $28.1 billion, the company focuses on safe, reliable gas distribution and invests heavily in pipeline modernization and infrastructure upgrades.
Shares of this natural gas distributor have outperformed the broader market over the past year. ATO has gained 18.5% over this time frame, while the broader S&P 500 Index ($SPX) has rallied nearly 12.3%. In 2025, ATO stock is up 24.9%, surpassing the SPX’s 12.9% rise on a YTD basis.
