Duke Energyvs.Southern Company
DUK vs SO · both in Utilities & power producers, part of the Energy, grid & critical infrastructure value chain: Electricity utilities and large power producers, from nuclear to renewable portfolios.
Duke Energy and Southern Company are similar in size by market cap; Duke Energy trades at the lower P/E (17.2 vs 21.0).
Side by side
| DUK | SO | |
|---|---|---|
| Market cap | $90.3B | $98B |
| Price | $116.84 | $86.15 |
| Today | +1.2% | +0.8% |
| Return YTD | −1.5% | −2.0% |
| Return 1Y | −8.0% | −11.4% |
| Since June 26, 2026 | −9.0% | −11.3% |
| P/E | 17.2 | 21.0 |
| P/S | 2.7 | 3.4 |
| P/B | 1.6 | 2.5 |
Data as of 2026-10-08 · updates daily after U.S. close
Since June 26, 2026: the change in the closing price, from the daily closes Sectivia records itself since that date.
The two companies
Duke EnergyDUK
A large US utility carrying a substantial nuclear fleet into a period of demand growth from electrification and data centres.
Full DUK profile →Southern CompanySO
Vogtle is adding nuclear output to what is already one of the biggest US electric and gas utilities.
Full SO profile →More DUK & SO comparisons
Other head-to-heads in the Utilities & power producers segment.