What is the current annual operating margin of ATO?

As of today, ATO annual operating margin is 33.17%

What is 1-year change in ATO annual operating margin?

ATO annual operating margin is up +1.94% year-over-year

What is 3-year change in ATO annual operating margin?

ATO annual operating margin is up +51.32% over the past 3 years

How far is ATO annual operating margin from its all-time high?

ATO annual operating margin is currently at its all-time high

How does ATO annual operating margin rank versus sector peers?

ATO annual operating margin is higher than 94.50% of companies in Utilities sector

When is ATO next annual earnings release?

As of today, the next annual earnings release for ATO has not been scheduled

What is the current quarterly operating margin of ATO?

As of today, ATO quarterly operating margin is 38.97%

What is ATO quarterly operating margin most recent change?

ATO quarterly operating margin was up +1.64% on March 31, 2026

What is 1-year change in ATO quarterly operating margin?

ATO quarterly operating margin is up +20.84% year-over-year

How far is ATO quarterly operating margin from its all-time high?

ATO quarterly operating margin is currently -0.26% below its historical high of 39.07% set on December 31, 2024

How does ATO quarterly operating margin rank versus sector peers?

ATO quarterly operating margin is higher than 93.33% of companies in Utilities sector

When is ATO next earnings release?

The next earnings release for ATO is on August 5, 2026

ATO Operating Margin History & Chart Since 1986

Annual Operating Margin

33.17%0.63%+1.94%

September 30, 2025

Summary

Current Value: As of today, ATO annual operating margin is 33.17%, up +1.94% on September 30, 2025
Historical Performance: ATO annual operating margin is up +51.32% over the past 3 years, up +13.56% over the past 5 years
All-Time High Comparison: ATO annual operating margin is currently at its all-time high
3-Year Low Comparison: ATO annual operating margin is +51.32% above its 3-year low of 21.92% reached on an earlier date
Sector Comparison: ATO annual operating margin is higher than 94.50% of companies in Utilities sector

Operating Margin Chart

beforeafter

Performance

ATO Performance
Metric	Date	Value	1Y	3Y	5Y	15Y
Annual Operating Margin	Sep 30, 25	33.17%	+1.9%	+51.3%	+13.6%	+265.7%
Quarterly Operating Margin	Mar 31, 26	38.97%	+20.8%	+42.1%	+34.7%	+165.1%
Price	Aug 4, 26	$172.86	+8.4%	+47.4%	+73.9%	+440.4%
PE Ratio	Aug 4, 26	21.28	-3.4%	+6.1%	+13.7%	+51.7%
Annual Revenue	Sep 30, 25	$4.70B	+12.9%	+11.9%	+66.7%	-0.6%
Annual Operating Profit	Sep 30, 25	$1.56B	+15.1%	+69.4%	+89.3%	+263.9%
Annual Gross Margin	Sep 30, 25	42.51%	+1.6%	+40.3%	+8.8%	+84.9%
Annual Net Margin	Sep 30, 25	25.48%	+1.8%	+38.3%	+19.6%	+491.2%

Operating Margin Highs

ATO Annual Operating Margin Highs Comparison
Period	High	Date	Current
3Y	33.17%	Sep 30, 25	at high
5Y	33.17%	Sep 30, 25	at high
All	33.17%	Sep 30, 25	at high

Operating Margin Lows

ATO Annual Operating Margin Lows Comparison
Period	Low	Date	Current
3Y	21.92%	N/A	+51.3%
5Y	21.92%	Sep 30, 22	+51.3%
All	3.90%	Sep 30, 86	+750.5%

Operating Margin History

Year	Value	Change
2025	33.17%	+1.9%
2024	32.54%	+30.4%
2023	24.96%	+13.9%
2022	21.92%	-17.5%
2021	26.56%	-9.1%
2020	29.21%	+13.6%
2019	25.71%	+10.1%
2018	23.36%	-11.0%
2017	26.24%	-9.2%
2016	28.91%	+82.4%
2015	15.85%	+28.9%
2014	12.30%	-3.5%
2013	12.74%	-11.3%
2012	14.36%	+32.2%
2011	10.86%	+19.7%
2010	9.07%	-0.4%
2009	9.11%	+53.6%
2008	5.93%	-13.7%
2007	6.87%	+4.2%
2006	6.59%	-7.1%

Year	Value	Change
2005	7.09%	+6.9%
2004	6.63%	-1.2%
2003	6.71%	-45.4%
2002	12.28%	+29.8%
2001	9.46%	-5.8%
2000	10.04%	+20.5%
1999	8.33%	-37.4%
1998	13.31%	+81.1%
1997	7.35%	-31.9%
1996	10.80%	+12.1%
1995	9.63%	+39.2%
1994	6.92%	-24.2%
1993	9.13%	+23.4%
1992	7.40%	+18.0%
1991	6.27%	-6.4%
1990	6.70%	+8.1%
1989	6.20%	-25.3%
1988	8.30%	+30.3%
1987	6.37%	+63.3%
1986	3.90%	-

FAQ

What is the current annual operating margin of ATO?: As of today, ATO annual operating margin is 33.17%
What is 1-year change in ATO annual operating margin?: ATO annual operating margin is up +1.94% year-over-year
What is 3-year change in ATO annual operating margin?: ATO annual operating margin is up +51.32% over the past 3 years
How far is ATO annual operating margin from its all-time high?: ATO annual operating margin is currently at its all-time high
How does ATO annual operating margin rank versus sector peers?: ATO annual operating margin is higher than 94.50% of companies in Utilities sector
When is ATO next annual earnings release?: As of today, the next annual earnings release for ATO has not been scheduled

Operating Margin Formula

Operating Profit Margin = Operating Income

Revenue × 100%

Quarterly Operating Margin

38.97%0.63%+1.64%

March 31, 2026

Summary

Current Value: As of today, ATO quarterly operating margin is 38.97%, up +1.64% on March 31, 2026
Historical Performance: ATO quarterly operating margin is up +20.84% year-over-year, up +42.07% over the past 3 years
All-Time High Comparison: ATO quarterly operating margin is currently -0.26% below its historical high of 39.07% set on December 31, 2024
3-Year Low Comparison: ATO quarterly operating margin is +52.58% above its 3-year low of 25.54% reached on an earlier date
Sector Comparison: ATO quarterly operating margin is higher than 93.33% of companies in Utilities sector

Performance

ATO Performance
Metric	Date	Value	3M	1Y	3Y	5Y
Quarterly Operating Margin	Mar 31, 26	38.97%	+1.6%	+20.8%	+42.1%	+34.7%
Annual Operating Margin	Sep 30, 25	33.17%	–	+1.9%	+51.3%	+13.6%
Price	Aug 4, 26	$172.86	-7.9%	+8.4%	+47.4%	+73.9%
PE Ratio	Aug 4, 26	21.28	-7.9%	-3.4%	+6.1%	+13.7%
Quarterly Revenue	Mar 31, 26	$1.96B	+46.2%	+0.6%	+27.4%	+48.8%
Quarterly Operating Profit	Mar 31, 26	$764.80M	+48.6%	+21.6%	+81.0%	+100.3%
Quarterly Gross Margin	Mar 31, 26	46.05%	-0.6%	+18.9%	+33.4%	+29.2%
Quarterly Net Margin	Mar 31, 26	29.64%	-1.2%	+19.1%	+27.8%	+31.9%

Quarterly Operating Margin Highs

ATO Quarterly Operating Margin Highs Comparison
Period	High	Date	Current
1Y	38.97%	Mar 31, 26	at high
3Y	39.07%	Dec 31, 24	-0.3%
5Y	39.07%	Dec 31, 24	-0.3%
All	39.07%	Dec 31, 24	-0.3%

Quarterly Operating Margin Lows

ATO Quarterly Operating Margin Lows Comparison
Period	Low	Date	Current
1Y	29.76%	Sep 30, 25	+30.9%
3Y	25.54%	N/A	+52.6%
5Y	14.59%	Sep 30, 22	+167.1%
All	-26.35%	Sep 30, 99	+247.9%

Quarterly Operating Margin History

Month	Value	Change
Mar 2026	38.97%	+1.6%
Dec 2025	38.34%	+28.8%
Sep 2025	29.76%	-1.0%
Jun 2025	30.05%	-6.8%
Mar 2025	32.25%	-17.5%
Dec 2024	39.07%	+38.9%
Sep 2024	28.12%	-10.4%
Jun 2024	31.40%	-6.1%
Mar 2024	33.45%	-2.9%
Dec 2023	34.45%	+31.4%
Sep 2023	26.22%	+2.7%
Jun 2023	25.54%	-6.9%
Mar 2023	27.43%	+26.8%
Dec 2022	21.64%	+48.3%
Sep 2022	14.59%	-22.9%
Jun 2022	18.93%	-18.9%
Mar 2022	23.34%	-14.3%
Dec 2021	27.24%	+70.3%
Sep 2021	16.00%	-27.4%
Jun 2021	22.03%	-23.9%
Mar 2021	28.94%	-11.4%
Dec 2020	32.68%	+53.9%
Sep 2020	21.23%	-24.7%
Jun 2020	28.20%	-16.8%
Mar 2020	33.90%	+17.4%
Dec 2019	28.87%	+42.8%
Sep 2019	20.22%	-19.6%
Jun 2019	25.16%	-7.5%
Mar 2019	27.19%	+0.9%
Dec 2018	26.94%	+32.2%
Sep 2018	20.38%	-7.8%
Jun 2018	22.11%	-0.5%
Mar 2018	22.22%	-18.4%
Dec 2017	27.23%	+37.9%
Sep 2017	19.74%	-26.1%
Jun 2017	26.72%	-7.4%
Mar 2017	28.87%	+9.1%
Dec 2016	26.47%	+36.2%
Sep 2016	19.43%	-31.0%
Jun 2016	28.14%	-0.4%
Mar 2016	28.25%	-15.6%
Dec 2015	33.47%	+159.9%
Sep 2015	12.88%	-30.0%
Jun 2015	18.39%	+10.3%
Mar 2015	16.68%	+11.3%
Dec 2014	14.99%	+14.1%
Sep 2014	13.14%	+22.5%
Jun 2014	10.73%	-14.4%
Mar 2014	12.54%	-6.0%
Dec 2013	13.34%	+65.7%
Sep 2013	8.05%	-11.9%
Jun 2013	9.14%	-45.1%
Mar 2013	16.64%	+19.6%
Dec 2012	13.91%	+405.8%
Sep 2012	2.75%	-78.6%
Jun 2012	12.88%	-33.5%
Mar 2012	19.36%	+43.6%
Dec 2011	13.48%	+149.2%
Sep 2011	5.41%	+5.5%
Jun 2011	5.13%	-65.1%
Mar 2011	14.70%	+6.2%
Dec 2010	13.84%	+170.8%
Sep 2010	5.11%	+15.3%
Jun 2010	4.43%	-61.7%
Mar 2010	11.57%	-12.7%

Month	Value	Change
Dec 2009	13.25%	+516.3%
Sep 2009	2.15%	-64.3%
Jun 2009	6.02%	-51.6%
Mar 2009	12.44%	+30.8%
Dec 2008	9.51%	+264.4%
Sep 2008	2.61%	+107.1%
Jun 2008	1.26%	-85.2%
Mar 2008	8.50%	-11.1%
Dec 2007	9.56%	+462.4%
Sep 2007	1.70%	+169.8%
Jun 2007	0.63%	-93.7%
Mar 2007	10.07%	-5.7%
Dec 2006	10.68%	+47.7%
Sep 2006	7.23%	+1,191.1%
Jun 2006	0.56%	-93.7%
Mar 2006	8.89%	+33.9%
Dec 2005	6.64%	+444.3%
Sep 2005	1.22%	-71.9%
Jun 2005	4.34%	-57.5%
Mar 2005	10.22%	+8.7%
Dec 2004	9.40%	+1,303.0%
Sep 2004	0.67%	-83.0%
Jun 2004	3.93%	-58.3%
Mar 2004	9.43%	+13.3%
Dec 2003	8.32%	+173.7%
Sep 2003	3.04%	-46.4%
Jun 2003	5.67%	-63.2%
Mar 2003	15.40%	+17.5%
Dec 2002	13.11%	+184.4%
Sep 2002	4.61%	-61.1%
Jun 2002	11.85%	-47.9%
Mar 2002	22.75%	+42.1%
Dec 2001	16.01%	+499.6%
Sep 2001	2.67%	+224.2%
Jun 2001	-2.15%	-119.6%
Mar 2001	10.95%	-0.9%
Dec 2000	11.05%	-69.7%
Sep 2000	36.45%	+2,466.9%
Jun 2000	-1.54%	-108.6%
Mar 2000	17.82%	+32.7%
Dec 1999	13.43%	+151.0%
Sep 1999	-26.35%	-7,034.2%
Jun 1999	0.38%	-98.0%
Mar 1999	19.45%	+29.1%
Dec 1998	15.07%	+1,857.1%
Sep 1998	0.77%	-86.8%
Jun 1998	5.83%	-58.0%
Dec 1997	13.88%	+157.9%
Sep 1997	-23.96%	-1,534.7%
Jun 1997	1.67%	-89.1%
Mar 1997	15.39%	+17.7%
Dec 1996	13.08%	+64.1%
Sep 1996	7.97%	+77.5%
Jun 1996	4.49%	-73.7%
Mar 1996	17.06%	+22.3%
Dec 1995	13.95%	+81.2%
Sep 1995	7.70%	+110.4%
Jun 1995	3.66%	-77.4%
Mar 1995	16.21%	+43.6%
Dec 1994	11.29%	+303.1%
Sep 1994	-5.56%	-724.7%
Jun 1994	0.89%	-93.0%
Mar 1994	12.68%	+29.0%
Dec 1993	9.83%	-

FAQ

What is the current quarterly operating margin of ATO?: As of today, ATO quarterly operating margin is 38.97%
What is ATO quarterly operating margin most recent change?: ATO quarterly operating margin was up +1.64% on March 31, 2026
What is 1-year change in ATO quarterly operating margin?: ATO quarterly operating margin is up +20.84% year-over-year
How far is ATO quarterly operating margin from its all-time high?: ATO quarterly operating margin is currently -0.26% below its historical high of 39.07% set on December 31, 2024
How does ATO quarterly operating margin rank versus sector peers?: ATO quarterly operating margin is higher than 93.33% of companies in Utilities sector
When is ATO next earnings release?: The next earnings release for ATO is on August 5, 2026

Operating Margin Formula

Operating Profit Margin = Operating Income

Revenue × 100%

Data Sources & References

ATO Official Website www.atmosenergy.com
Most Recent Annual Report (10-K) www.sec.gov/Archives/edgar/data/731802/000073180225000056/0000731802-25-000056-index.htm
ATO Profile on Yahoo Finance finance.yahoo.com/quote/ATO
ATO Profile on NASDAQ.com www.nasdaq.com/market-activity/stocks/ato