ATO vs CEG
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. CEG: Constellation Energy is the nation's largest producer of carbon-free electricity, leveraging a massive nuclear fleet to serve retail and wholesale energy markets.
Side-by-side fundamentals
| Metric | ATO | CEG | Edge |
|---|---|---|---|
| Price as of 2026-10-08 close | $160.66 | $285.07 | |
| Market cap as of 2026-07-31 (share count; price 2026-10-08) | $27.1B | $101.0B | |
| P/E as of 2026-10-08 | 19.08 | 27.78 | ATO lower |
| PEG as of 2026-10-08, 3-year EPS CAGR to FY2025 | 1.90 | n/a | |
| Net margin FY2025, SEC XBRL | +25.5% | +9.1% | ATO higher |
| Operating margin FY2025, SEC XBRL | +33.2% | +12.1% | ATO higher |
| ROE FY2025, SEC XBRL | +8.8% | +15.6% | CEG higher |
| ROA FY2025, SEC XBRL | +4.2% | +4.1% | ATO higher |
| Debt / equity as of 2026-09-03 | 0.68 | 0.77 | ATO lower |
| Revenue growth (YoY) as of 2026-09-03 | +6.5% | +26.0% | CEG higher |
| Revenue CAGR (3y) SEC XBRL | +3.8% | +1.5% | ATO higher |
| Dividend yield as of 2026-09-03 | +2.5% | +0.7% | ATO higher |
| Dividend streak (yrs) SEC XBRL | 17 | 4 | ATO higher |
| Beta as of 2026-09-03 | 0.10 | 1.54 | |
| 1-year return as of 2026-10-08 close | -8.6% | -23.2% | ATO 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.