Basis: Latest reported fiscal quarter. Source: stored company filings and market data; unavailable inputs remain N/A.
Is the operating margin high or low?
The operating margin of 25.46% is 19% above its 5-year average of 21.46%, near the high end of its 5-year range (-5.74%–33.16%).
As of the fiscal period ended Tuesday, June 30, 2026. 5.19% above its 12-month average of 24.20%.
Reported quarterly operating margin; no daily interpolation.
OPERATING MARGIN
25.46%
OPERATING MARGIN AVG TTM
24.20%
OPERATING MARGIN AVG 3Y
24.95%
OPERATING MARGIN AVG 5Y
23.91%
OPERATING MARGIN AVG 10Y
21.84%
OPERATING MARGIN AVG 15Y
22.48%
OPERATING MARGIN AVG 20Y
22.05%
CURRENT VS TTM AVG
+5.19%
CURRENT VS 3Y AVG
+2.02%
CURRENT VS 5Y AVG
+6.45%
CURRENT VS 10Y AVG
+16.55%
CURRENT VS 15Y AVG
+13.25%
CURRENT VS 20Y AVG
+15.46%
SECTOR MEDIAN · UTILITIES
21.85%
median of 42 covered companies
CURRENT VS SECTOR MEDIAN
+16.50%
vs the sector median at left
The Southern Company
Market Cap
$106.57B
Operating Margin
25.46%
TTM Avg
24.20%
3Y Avg
24.95%
5Y Avg
23.91%
Market Cap
$97.78B
Operating Margin
26.98%
TTM Avg
26.36%
3Y Avg
24.49%
5Y Avg
23.31%
Market Cap
$94.35B
Operating Margin
16.58%
TTM Avg
15.28%
3Y Avg
9.76%
5Y Avg
6.46%
Market Cap
$69.56B
Operating Margin
28.36%
TTM Avg
24.11%
3Y Avg
21.79%
5Y Avg
21.13%
Market Cap
$60.84B
Operating Margin
21.18%
TTM Avg
24.60%
3Y Avg
20.82%
5Y Avg
19.21%
Market Cap
$50.22B
Operating Margin
22.57%
TTM Avg
22.95%
3Y Avg
20.59%
5Y Avg
19.26%
Market Cap
$48.82B
Operating Margin
20.96%
TTM Avg
18.69%
3Y Avg
17.68%
5Y Avg
17.58%
| NAME | MARKET CAP | OPERATING MARGIN | TTM | 3Y | 5Y |
|---|---|---|---|---|---|
| The Southern Company (SO) | $106.57B | 25.46% | 24.20% | 24.95% | 23.91% |
| Duke Energy Corporation (DUK)vs › | $97.78B | 26.98% | 26.36% | 24.49% | 23.31% |
| Constellation Energy Corporation (CEG)vs › | $94.35B | 16.58% | 15.28% | 9.76% | 6.46% |
| American Electric Power Company, Inc. (AEP)vs › | $69.56B | 28.36% | 24.11% | 21.79% | 21.13% |
| Dominion Energy, Inc. (D)vs › | $60.84B | 21.18% | 24.60% | 20.82% | 19.21% |
| Sempra (SRE)vs › | $57.89B | 25.03% | 22.79% | 21.92% | 22.52% |
| Entergy Corporation (ETR)vs › | $50.22B | 22.57% | 22.95% | 20.59% | 19.26% |
| Vistra Corp. (VST)vs › | $49.97B | 2.07% | 20.00% | 20.00% | 14.33% |
| Xcel Energy Inc. (XEL)vs › | $48.82B | 20.96% | 18.69% | 17.68% | 17.58% |
| Exelon Corporation (EXC)vs › | $46.88B | 20.79% | 19.98% | 18.97% | 16.56% |
Gross Margin
29.8%
Operating Margin
25.5%
Operating Margin = Operating Income / Revenue
Operating margin is the percentage of revenue remaining after operating expenses, reflecting operating efficiency.
Expanded definitions: Investopedia, Wikipedia, Corporate Finance Institute
| DATE | OPERATING MARGIN |
|---|---|
| 2026-06-30 | 25.46% |
| 2026-03-31 | 24.03% |
| 2025-12-31 | 13.05% |
| 2025-09-30 | 33.16% |
| 2025-06-30 | 25.30% |
| 2025-03-31 | 25.85% |
| 2024-12-31 | 16.69% |
| 2024-09-30 | 32.55% |
| 2024-06-30 | 30.00% |
| 2024-03-31 | 25.62% |
| 2023-12-31 | 19.97% |
| 2023-09-30 | 30.23% |
| 2023-06-30 | 22.44% |
| 2023-03-31 | 18.80% |
| 2022-12-31 | 1.96% |
| 2022-09-30 | 26.18% |
| 2022-06-30 | 22.97% |
| 2022-03-31 | 20.82% |
| 2021-12-31 | -5.74% |
| 2021-09-30 | 27.62% |
| 2021-06-30 | 13.62% |
| 2021-03-31 | 27.04% |
| 2020-12-31 | 14.25% |
| 2020-09-30 | 32.65% |
| 2020-06-30 | 22.90% |
| 2020-03-31 | 25.17% |
| 2019-12-31 | 14.04% |
| 2019-09-30 | 33.58% |
| 2019-06-30 | 26.32% |
| 2019-03-31 | 68.20% |
| 2018-12-31 | 10.83% |
| 2018-09-30 | 35.30% |
| 2018-06-30 | 1.12% |
| 2018-03-31 | 21.59% |
| 2017-12-31 | 14.11% |
| 2017-09-30 | 32.11% |
| 2017-06-30 | -30.37% |
| 2017-03-31 | 21.69% |
| 2016-12-31 | 11.33% |
| 2016-09-30 | 30.60% |
| 2016-06-30 | 26.58% |
| 2016-03-31 | 23.55% |
| 2015-12-31 | 16.20% |
| 2015-09-30 | 30.53% |
| 2015-06-30 | 25.32% |
| 2015-03-31 | 22.88% |
| 2014-12-31 | 13.97% |
| 2014-09-30 | 23.94% |
| 2014-06-30 | 24.69% |
| 2014-03-31 | 15.07% |
| 2013-12-31 | 20.35% |
| 2013-09-30 | 29.72% |
| 2013-06-30 | 15.07% |
| 2013-03-31 | 8.34% |
| 2012-12-31 | 21.98% |
| 2012-09-30 | 34.46% |
| 2012-06-30 | 27.34% |
| 2012-03-31 | 21.25% |
| 2011-12-31 | 15.94% |
| 2011-09-30 | 30.43% |
| 2011-06-30 | 25.13% |
| 2011-03-31 | 21.29% |
| 2010-12-31 | 12.47% |
| 2010-09-30 | 27.42% |
| 2010-06-30 | 22.60% |
| 2010-03-31 | 22.18% |
| 2009-12-31 | 13.59% |
| 2009-09-30 | 30.23% |
| 2009-06-30 | 22.81% |
| 2009-03-31 | 13.36% |
| 2008-12-31 | 12.34% |
| 2008-09-30 | 25.89% |
| 2008-06-30 | 21.92% |
| 2008-03-31 | 19.23% |
| 2007-12-31 | 12.25% |
| 2007-09-30 | 28.59% |
| 2007-06-30 | 22.38% |
| 2007-03-31 | 20.28% |
| 2006-12-31 | 14.88% |
| 2006-09-30 | 29.84% |
| 2006-06-30 | 22.47% |
| 2006-03-31 | 19.27% |
| 2005-12-31 | 13.02% |
| 2005-09-30 | 29.30% |
| 2005-06-30 | 23.12% |
| 2005-03-31 | 20.08% |
| 2004-12-31 | 14.56% |
| 2004-09-30 | 32.35% |
| 2004-06-30 | 23.10% |
| 2004-03-31 | 22.81% |
| 2003-12-31 | 16.99% |
| 2003-09-30 | 33.15% |
| 2003-06-30 | 27.66% |
| 2003-03-31 | 23.77% |
| 2002-12-31 | 13.84% |
| 2002-09-30 | 32.94% |
