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 21.94% is in line with its 5-year average of 20.65%, around the middle of its 5-year range (10.20%–30.57%).
As of the fiscal period ended Tuesday, June 30, 2026. 5.15% below its 12-month average of 23.13%.
Reported quarterly operating margin; no daily interpolation.
OPERATING MARGIN
21.94%
OPERATING MARGIN AVG TTM
23.13%
OPERATING MARGIN AVG 3Y
21.53%
OPERATING MARGIN AVG 5Y
20.65%
OPERATING MARGIN AVG 10Y
21.25%
OPERATING MARGIN AVG 15Y
20.69%
OPERATING MARGIN AVG 20Y
19.76%
CURRENT VS TTM AVG
-5.15%
CURRENT VS 3Y AVG
+1.90%
CURRENT VS 5Y AVG
+6.27%
CURRENT VS 10Y AVG
+3.26%
CURRENT VS 15Y AVG
+6.05%
CURRENT VS 20Y AVG
+11.06%
SECTOR MEDIAN · UTILITIES
21.18%
median of 43 covered companies
CURRENT VS SECTOR MEDIAN
+3.59%
vs the sector median at left
Ameren Corporation
Market Cap
$30.15B
Operating Margin
21.94%
TTM Avg
23.13%
3Y Avg
21.53%
5Y Avg
20.65%
Market Cap
$29.06B
Operating Margin
12.35%
TTM Avg
15.90%
3Y Avg
14.62%
5Y Avg
13.68%
Market Cap
$28.74B
Operating Margin
36.97%
TTM Avg
32.86%
3Y Avg
28.15%
5Y Avg
28.06%
Market Cap
$27.65B
Operating Margin
18.57%
TTM Avg
18.20%
3Y Avg
17.33%
5Y Avg
17.48%
Market Cap
$27.25B
Operating Margin
22.52%
TTM Avg
22.40%
3Y Avg
20.71%
5Y Avg
20.89%
Market Cap
$26.78B
Operating Margin
23.24%
TTM Avg
22.79%
3Y Avg
20.65%
5Y Avg
18.82%
Market Cap
$26.66B
Operating Margin
36.94%
TTM Avg
36.62%
3Y Avg
35.58%
5Y Avg
34.30%
Market Cap
$26.30B
Operating Margin
23.50%
TTM Avg
22.05%
3Y Avg
20.28%
5Y Avg
22.45%
Market Cap
$26.29B
Operating Margin
36.72%
TTM Avg
26.68%
3Y Avg
19.52%
5Y Avg
16.16%
| NAME | MARKET CAP | OPERATING MARGIN | TTM | 3Y | 5Y |
|---|---|---|---|---|---|
| Ameren Corporation (AEE) | $30.15B | 21.94% | 23.13% | 21.53% | 20.65% |
| DTE Energy Company (DTE)vs › | $29.06B | 12.35% | 15.90% | 14.62% | 13.68% |
| Atmos Energy Corporation (ATO)vs › | $28.74B | 36.97% | 32.86% | 28.15% | 28.06% |
| FirstEnergy Corp. (FE)vs › | $27.65B | 18.57% | 18.20% | 17.33% | 17.48% |
| Eversource Energy (ES)vs › | $27.25B | 22.52% | 22.40% | 20.71% | 20.89% |
| CenterPoint Energy, Inc. (CNP)vs › | $26.78B | 23.24% | 22.79% | 20.65% | 18.82% |
| American Water Works Company, Inc. (AWK)vs › | $26.66B | 36.94% | 36.62% | 35.58% | 34.30% |
| PPL Corporation (PPL)vs › | $26.30B | 23.50% | 22.05% | 20.28% | 22.45% |
| Edison International (EIX)vs › | $26.29B | 36.72% | 26.68% | 19.52% | 16.16% |
| NRG Energy, Inc. (NRG)vs › | $25.47B | 5.38% | 7.32% | 5.59% | 7.82% |
Gross Margin
29.6%
Operating Margin
21.9%
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 | 21.94% |
| 2026-03-31 | 24.45% |
| 2025-12-31 | 20.20% |
| 2025-09-30 | 30.57% |
| 2025-06-30 | 18.51% |
| 2025-03-31 | 20.51% |
| 2024-12-31 | 10.20% |
| 2024-09-30 | 26.97% |
| 2024-06-30 | 21.32% |
| 2024-03-31 | 20.43% |
| 2023-12-31 | 16.32% |
| 2023-09-30 | 29.81% |
| 2023-06-30 | 18.69% |
| 2023-03-31 | 17.02% |
| 2022-12-31 | 13.49% |
| 2022-09-30 | 25.98% |
| 2022-06-30 | 17.90% |
| 2022-03-31 | 17.62% |
| 2021-12-31 | 12.75% |
| 2021-09-30 | 29.49% |
| 2021-06-30 | 19.43% |
| 2021-03-31 | 20.18% |
| 2020-12-31 | 15.89% |
| 2020-09-30 | 30.34% |
| 2020-06-30 | 25.32% |
| 2020-03-31 | 16.74% |
| 2019-12-31 | 13.60% |
| 2019-09-30 | 31.34% |
| 2019-06-30 | 20.30% |
| 2019-03-31 | 18.51% |
| 2018-12-31 | 11.70% |
| 2018-09-30 | 30.92% |
| 2018-06-30 | 24.63% |
| 2018-03-31 | 17.22% |
| 2017-12-31 | 16.05% |
| 2017-09-30 | 33.02% |
| 2017-06-30 | 25.16% |
| 2017-03-31 | 15.98% |
| 2016-12-31 | 10.69% |
| 2016-09-30 | 37.17% |
| 2016-06-30 | 22.78% |
| 2016-03-31 | 15.34% |
| 2015-12-31 | 10.70% |
| 2015-09-30 | 34.15% |
| 2015-06-30 | 16.92% |
| 2015-03-31 | 16.45% |
| 2014-12-31 | 9.12% |
| 2014-09-30 | 33.59% |
| 2014-06-30 | 22.69% |
| 2014-03-31 | 15.43% |
| 2013-12-31 | 12.93% |
| 2013-09-30 | 34.62% |
| 2013-06-30 | 18.60% |
| 2013-03-31 | 12.54% |
| 2012-12-31 | -120.34% |
| 2012-09-30 | 33.82% |
| 2012-06-30 | 20.72% |
| 2012-03-31 | 11.19% |
| 2011-12-31 | 9.38% |
| 2011-11-23 | 24.25% |
| 2011-06-30 | 17.74% |
| 2011-03-31 | 11.92% |
| 2010-12-31 | 11.22% |
| 2010-09-30 | 3.95% |
| 2010-06-30 | 19.42% |
| 2010-03-31 | 15.55% |
| 2009-12-31 | 14.63% |
| 2009-09-30 | 26.72% |
| 2009-06-30 | 21.67% |
| 2009-03-31 | 16.75% |
| 2008-12-31 | 8.86% |
| 2008-09-30 | 20.78% |
| 2008-06-30 | 24.78% |
| 2008-03-31 | 15.43% |
| 2007-12-31 | 14.00% |
| 2007-09-30 | 24.14% |
| 2007-06-30 | 18.92% |
| 2007-03-31 | 14.48% |
| 2006-12-31 | 9.51% |
| 2006-09-30 | 28.64% |
| 2006-06-30 | 17.81% |
| 2006-03-31 | 10.89% |
| 2005-12-31 | 8.47% |
| 2005-09-30 | 27.30% |
| 2005-06-30 | 23.11% |
| 2005-03-31 | 16.12% |
| 2004-12-31 | 13.76% |
| 2004-09-30 | 31.60% |
| 2004-06-30 | 21.41% |
| 2004-03-31 | 17.76% |
| 2003-12-31 | 13.28% |
| 2003-09-30 | 37.04% |
| 2003-06-30 | 22.98% |
| 2003-03-31 | 18.14% |
| 2002-12-31 | 1.19% |
| 2002-09-30 | 35.80% |
