DUK vs SO
Duke Energy (DUK) and Southern (SO) compared side by side. Southern (SO) is larger, with a market cap of $106.9B versus $97.4B for Duke Energy, about 1.1 times the size. On trailing earnings, DUK is cheaper at 18.8x versus 22.4x for SO.
Head to head
| Metric | DUK | SO |
|---|---|---|
| Market cap | $97.4B | $106.9B |
| P/E (TTM) | 18.8x | 22.4x |
| Forward P/E | 17.4x | 18.9x |
| Revenue (TTM) | $32.8B | $30.2B |
| Revenue growth | 1.1% | 0.1% |
| Gross margin | 52.0% | 48.3% |
| Operating margin | 27.5% | 29.6% |
| Free cash flow | -$4.3B | -$3.3B |
| Dividend yield | 3.47% | 3.27% |
| 1-year return | +1.7% | -0.2% |
| 5-year return (annual) | +7.9% | +12.1% |
| Max drawdown | -72% | -38% |
| FI Handbook grade | C- | C- |
Highlighted: the stronger figure on metrics where higher or lower is clearly better.
Growth of $10,000 (5 years, price only)
DUK vs SO FAQ
Which is bigger, DUK or SO?
Southern (SO) is larger, with a market cap of $106.9B versus $97.4B for Duke Energy, about 1.1 times the size.
Is DUK or SO cheaper?
On trailing earnings, DUK is cheaper at 18.8x versus 22.4x for SO. A lower P/E can reflect slower expected growth, so compare growth and margins too.
Which stock performed better over the past year, DUK or SO?
DUK returned +1.7% over the past year including dividends, versus -0.2% for SO, through October 23, 2026.
Which pays a higher dividend, DUK or SO?
DUK yields 3.47% versus 3.27% for SO.
Full pages: Duke Energy · Southern