ATO vs SWX
ATO: Atmos Energy is a large-scale regulated natural gas distributor and pipeline operator focused on infrastructure modernization and safe service delivery across eight US states. SWX: Southwest Gas Holdings is a regulated natural gas utility serving customers across Arizona, Nevada, and California.
Side-by-side fundamentals
| Metric | ATO | SWX | Edge |
|---|---|---|---|
| Price as of 2026-10-08 close | $160.66 | $83.51 | |
| Market cap as of 2026-07-31 (share count; price 2026-10-08) | $27.1B | $6.0B | |
| P/E as of 2026-10-08 | 19.08 | 11.66 | SWX lower |
| PEG as of 2026-10-08, 3-year EPS CAGR to FY2025 | 1.90 | n/a | |
| Net margin | +25.5% | +2.8% | ATO higher |
| Operating margin | +33.2% | +5.4% | ATO higher |
| ROE FY2025, SEC XBRL | +8.8% | +10.8% | SWX higher |
| ROA FY2025, SEC XBRL | +4.2% | +4.2% | ATO higher |
| Debt / equity as of 2026-09-03 | 0.68 | 0.85 | ATO lower |
| Revenue growth (YoY) as of 2026-09-03 | +6.5% | -15.3% | ATO higher |
| Revenue CAGR (3y) SEC XBRL | +3.8% | +18.1% | SWX higher |
| Dividend yield as of 2026-09-03 | +2.5% | +3.0% | SWX higher |
| Dividend streak (yrs) SEC XBRL | 17 | 5 | ATO higher |
| Beta as of 2026-09-03 | 0.10 | 0.25 | |
| 1-year return as of 2026-10-08 close | -8.6% | +5.2% | SWX higher |
Fundamentals: SEC XBRL company filings for the figures marked with a fiscal year, and market data, as of 2026-09-03 for the rest. Filings: SEC EDGAR. Prices are delayed daily-close data.
Last updated 2026-10-08.
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.