American Electric Powervs.Constellation Energy
AEP vs CEG · 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.
Constellation Energy is about 1.6× larger than American Electric Power by market cap; American Electric Power trades at the lower P/E (21.3 vs 30.5); year to date, American Electric Power leads (+5.9% vs −19.3%).
Side by side
| AEP | CEG | |
|---|---|---|
| Market cap | $66.9B | $106B |
| Price | $122.81 | $298.07 |
| Today | +0.4% | +4.6% |
| Return YTD | +5.9% | −19.3% |
| Return 1Y | +3.3% | −23.2% |
| Since June 26, 2026 | −11.4% | +12.9% |
| P/E | 21.3 | 30.5 |
| P/S | 3.0 | 3.4 |
| P/B | 2.1 | 3.3 |
Data as of 2026-10-09 · 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
American Electric PowerAEP
Regulated transmission and distribution wires across 11 states, one of the largest such networks in the US.
Full AEP profile →Constellation EnergyCEG
No US company generates more nuclear power. Its carbon-free baseload increasingly goes to data centre operators on long-term contracts, the clearest case being Microsoft's deal to restart Three Mile Island.
Full CEG profile →More AEP & CEG comparisons
Other head-to-heads in the Utilities & power producers segment.