| Periodo | Azioni in circolazione | Var. |
| 2025 | 160.57 M | +5.18% |
| 2024 | 152.67 M | +5.17% |
| 2023 | 145.17 M | +5.12% |
| 2022 | 138.10 M | +6.36% |
| 2021 | 129.83 M | +5.67% |
| 2020 | 122.87 M | +4.61% |
| 2019 | 117.46 M | +5.81% |
| 2018 | 111.01 M | +4.63% |
| 2017 | 106.10 M | +2.49% |
| 2016 | 103.52 M | — |
Atmos Energy Corporation is a natural gas utility company that focuses on the distribution, transmission, and storage of natural gas in the United States. Headquartered in Dallas, Texas, it operates as a fully regulated, pure-play natural gas provider serving residential, commercial, industrial, and public-sector customers across multiple states, including large markets in Texas. The company’s core activities are organized into two primary segments: Distribution, which handles regulated natural gas delivery and related sales operations to end users, and Pipeline and Storage, which manages intrastate pipeline networks, storage facilities, and transmission services. Atmos Energy plays a central role in regional energy infrastructure by supplying fuel for heating, cooking, and industrial processes, as well as supporting power generation and large-scale gas transportation. As a regulated utility, it operates under state and local oversight, emphasizing system safety, reliability, and compliance while maintaining critical natural gas infrastructure that underpins everyday energy needs in its service territories.