Constellation Energyvs.Exelon
CEG vs EXC · 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 2.4× larger than Exelon by market cap; Exelon trades at the lower P/E (15.5 vs 30.5); year to date, Exelon leads (−4.3% vs −19.3%).
Side by side
| CEG | EXC | |
|---|---|---|
| Market cap | $106B | $43.1B |
| Price | $298.07 | $41.76 |
| Today | +4.6% | +0.1% |
| Return YTD | −19.3% | −4.3% |
| Return 1Y | −23.2% | −10.5% |
| Since June 26, 2026 | +12.9% | −11.9% |
| P/E | 30.5 | 15.5 |
| P/S | 3.4 | 1.7 |
| P/B | 3.3 | 1.5 |
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
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 →ExelonEXC
Distributes electricity and gas to several large US cities, ComEd and PECO among them.
Full EXC profile →More CEG & EXC comparisons
Other head-to-heads in the Utilities & power producers segment.