ATO vs SWX
ATO: Atmos Energy safely distributes natural gas to 3.4 million customers across eight states while operating regulated pipeline and storage infrastructure, generating stable cash flows through rate-recovery mechanisms. SWX: Southwest Gas is a regulated natural gas distribution utility serving over 2.3 million customers across Arizona, Nevada, and California with infrastructure investments and safe delivery operations.
Side-by-side fundamentals
| Metric | ATO | SWX | Edge |
|---|---|---|---|
| Price as of 2026-07-27 close | $178.22 | $92.01 | |
| Market cap as of 2026-07-31 | $29.7B | $6.7B | |
| P/E as of 2026-07-31 | 21.66 | 14.14 | SWX lower |
| PEG as of 2026-07-31 | 2.36 | 2.19 | SWX lower |
| Net margin as of 2026-07-31 | +27.6% | +26.1% | ATO higher |
| Gross margin as of 2026-07-31 | +48.1% | -78.4% | ATO higher |
| Operating margin as of 2026-07-31 | +35.9% | +28.7% | ATO higher |
| ROE as of 2026-07-31 | +9.6% | +11.9% | SWX higher |
| ROA as of 2026-07-31 | +4.6% | +4.3% | ATO higher |
| Debt / equity as of 2026-07-31 | 0.65 | 0.86 | ATO lower |
| Revenue growth (YoY) as of 2026-07-31 | +8.8% | -18.0% | ATO higher |
| Revenue CAGR (3y) SEC XBRL | +3.8% | +18.1% | SWX higher |
| Dividend yield as of 2026-07-31 | +2.3% | +2.9% | SWX higher |
| Dividend streak (yrs) SEC XBRL | 5 | 5 | Tie |
| Beta as of 2026-07-31 | 0.61 | 0.56 | |
| 1-year return as of 2026-07-27 close | +13.6% | +17.3% | SWX higher |
Fundamentals: market data, as of 2026-07-31. Filings: SEC EDGAR. Prices are delayed daily-close data.
Last updated 2026-07-27.
Informational only — NOT financial advice. All figures are delayed daily-close data from SEC EDGAR & market data, shown with their as-of date; "Edge" cells are a pure numeric comparison, not a recommendation.