CEG vs SO
Constellation Energy Corp (CEG) and Southern Co (SO) are both filed with the SEC under Electric Services. The two are within rounding of one another by market cap ($100.1B and $100.4B); CEG trades at the higher fiscal-year P/E (38.2× against 22.7×); SO reports the higher net margin (14.7% against 9.1%); CEG grew sales faster over three years (+1.5% against +0.3%); and over the past year SO returned -2.0% against CEG's -13.0%.
| CEG | SO | |
|---|---|---|
| Last close | $276.75 | $88.25 |
| Market cap | $100.1B | $100.4B |
| P/E (FY) | 38.2× | 22.7× |
| P/S | 3.9× | 3.4× |
| EV/EBITDA | 18.2× | 12.8× |
| Operating margin | 12.1% | 24.7% |
| Net margin | 9.1% | 14.7% |
| Return on equity | 16.8% | 12.5% |
| Sales growth (3y) | +1.5% | +0.3% |
| EPS growth (3y) | — | +6.3% |
| Dividend yield | 0.5% | 3.0% |
| 1-year return | -13.0% | -2.0% |
Screener snapshot — prices as of 2026-08-28. Each side's last close is the most recent session the snapshot holds for that company, which can be an earlier one, and its 1-year return is measured to that close. Market caps struck on 2026-08-27. Last close, market cap and the 1-year return are price figures; every other row is computed over the company's latest filed fiscal year — FY2025 (ended 2025-12-31) for both. — not published for this company. A ratio goes unpublished for more than one reason: a component the calculation needs is not on file, the filing does not tag the line it is read from, or the calculation is not defined on the filed basis — EV/EBITDA is not printed on non-positive EBITDA, and return on equity is not computed on a zero or negative equity base.
Who holds them, and who has traded them
| CEG | SO | |
|---|---|---|
| Institutional holders (13F) | 1,883 | 2,334 |
| Insider buyers − sellers (180d) | — | -4 |
| Congressional trades disclosed (180d) | 1 | 0 |
| Executive-branch officials on file — trades disclosed (180d) | 8 | 14 |
Counts only. The congressional figures count transactions dated in the trailing 180 days and disclosed in STOCK Act periodic transaction reports; amounts are filed as ranges and are never summed. The executive-branch figures count the same window of transactions, and they are scoped to one roster. The officials OGE posts for direct download. Insider buyers − sellers counts distinct people filing open-market Form 4 purchases minus distinct people filing open-market sales over the trailing 180 days, capped at ±5. — no open-market Form 4 purchases or sales in the window.
CEG vs SO: common questions
- Is CEG bigger than SO?
- SO carries the larger market cap — $100.4B against $100.1B, both struck on 2026-08-27.
- Which trades at a higher P/E, CEG or SO?
- CEG, at a fiscal-year 38.2× against 22.7× for SO. Both are price ÷ latest full-year diluted earnings per share, not a trailing-twelve-month P/E.
- How have CEG and SO performed over the past year?
- SO returned -2.0% and CEG -13.0%, measured on the trailing calendar year to the last close.
- How many institutions hold CEG and SO?
- 1,883 13F filers report a position in CEG and 2,334 in SO, on the latest quarter in the panel.
- Are CEG and SO in the same industry?
- Both are filed with the SEC under Electric Services, which is the classification this pairing is built on.
CEG overview → · SO overview → · CEG institutional ownership → · SO institutional ownership → · Congress and CEG → · Executive branch and CEG → · Executive branch and SO →
More in Electric Services: AEP vs CEG · AEP vs D · AEP vs ETR · AEP vs NEE
Stock comparisons lists every pair this site publishes.
Source: SPZCO — https://spzco.com/vs/ceg-vs-so