What is the current annual gross margin of ATO?

As of today, ATO annual gross margin is 42.51%

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

ATO annual gross margin is up +1.63% year-over-year

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

ATO annual gross margin is up +40.30% over the past 3 years

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

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

How does ATO annual gross margin rank versus sector peers?

ATO annual gross margin is higher than 82.57% of companies in Utilities sector

When is ATO next annual earnings release?

The next annual earnings release for ATO is on November 4, 2026

What is the current quarterly gross margin of ATO?

As of today, ATO quarterly gross margin is 50.75%

What is ATO quarterly gross margin most recent change?

ATO quarterly gross margin was up +10.21% on June 30, 2026

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

ATO quarterly gross margin is up +12.90% year-over-year

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

ATO quarterly gross margin is currently at its all-time high

How does ATO quarterly gross margin rank versus sector peers?

ATO quarterly gross margin is higher than 88.89% of companies in Utilities sector

When is ATO next earnings release?

The next earnings release for ATO is on November 4, 2026

ATO Gross Margin History & Chart Since 1985

Annual Gross Margin

42.51%0.68%+1.63%

September 30, 2025

Summary

Current Value: As of today, ATO annual gross margin is 42.51%, up +1.63% on September 30, 2025
Historical Performance: ATO annual gross margin is up +40.30% over the past 3 years, up +8.75% over the past 5 years
All-Time High Comparison: ATO annual gross margin is currently at its all-time high
3-Year Low Comparison: ATO annual gross margin is +40.30% above its 3-year low of 30.30% reached on an earlier date
Sector Comparison: ATO annual gross margin is higher than 82.57% of companies in Utilities sector

Gross Margin Chart

beforeafter

Performance

ATO Performance
Metric	Date	Value	1Y	3Y	5Y	15Y
Annual Gross Margin	Sep 30, 25	42.51%	+1.6%	+40.3%	+8.8%	+84.9%
Quarterly Gross Margin	Jun 30, 26	50.75%	+12.9%	+23.5%	+43.0%	+105.4%
Price	Aug 24, 26	$167.82	-0.2%	+44.2%	+71.0%	+405.9%
PE Ratio	Aug 24, 26	19.98	-14.0%	+0.3%	+8.2%	+37.3%
Annual Revenue	Sep 30, 25	$4.70B	+12.9%	+11.9%	+66.7%	-0.6%
Annual Gross Profit	Sep 30, 25	$2.00B	+14.7%	+57.0%	+81.3%	+83.8%
Annual Operating Margin	Sep 30, 25	33.17%	+1.9%	+51.3%	+13.6%	+265.7%
Annual Net Margin	Sep 30, 25	25.48%	+1.8%	+38.3%	+19.6%	+491.2%

Gross Margin Highs

ATO Annual Gross Margin Highs Comparison
Period	High	Date	Current
3Y	42.51%	Sep 30, 25	at high
5Y	42.51%	Sep 30, 25	at high
All	42.51%	Sep 30, 25	at high

Gross Margin Lows

ATO Annual Gross Margin Lows Comparison
Period	Low	Date	Current
3Y	30.30%	N/A	+40.3%
5Y	30.30%	Sep 30, 22	+40.3%
All	0.00%	Sep 30, 85	N/A

Gross Margin History

Year	Value	Change
2025	42.51%	+1.6%
2024	41.83%	+23.0%
2023	34.01%	+12.2%
2022	30.30%	-15.2%
2021	35.74%	-8.6%
2020	39.09%	+11.1%
2019	35.19%	+10.6%
2018	31.83%	-8.9%
2017	34.95%	-7.9%
2016	37.95%	+76.9%
2015	21.45%	+29.3%
2014	16.59%	-5.5%
2013	17.56%	-10.5%
2012	19.62%	-22.5%
2011	25.30%	+10.0%
2010	22.99%	+1.1%
2009	22.73%	+46.5%
2008	15.52%	-12.9%
2007	17.82%	+6.3%
2006	16.76%	-12.7%
2005	19.20%	+20.5%

Year	Value	Change
2004	15.94%	-0.4%
2003	16.00%	-51.1%
2002	32.72%	+50.4%
2001	21.75%	-29.4%
2000	30.80%	-12.5%
1999	35.20%	+5.0%
1998	33.52%	+6.9%
1997	31.36%	-2.9%
1996	32.28%	-3.8%
1995	33.56%	+12.3%
1994	29.89%	-2.8%
1993	30.74%	-0.4%
1992	30.87%	+200.6%
1991	10.27%	-2.7%
1990	10.55%	+3.5%
1989	10.19%	-16.5%
1988	12.20%	>+9,900.0%
1987	0.00%	0.0%
1986	0.00%	0.0%
1985	0.00%	-

FAQ

What is the current annual gross margin of ATO?: As of today, ATO annual gross margin is 42.51%
What is 1-year change in ATO annual gross margin?: ATO annual gross margin is up +1.63% year-over-year
What is 3-year change in ATO annual gross margin?: ATO annual gross margin is up +40.30% over the past 3 years
How far is ATO annual gross margin from its all-time high?: ATO annual gross margin is currently at its all-time high
How does ATO annual gross margin rank versus sector peers?: ATO annual gross margin is higher than 82.57% of companies in Utilities sector
When is ATO next annual earnings release?: The next annual earnings release for ATO is on November 4, 2026

Gross Margin Formula

Gross Margin = Gross Profit

Revenue × 100%

Quarterly Gross Margin

50.75%4.70%+10.21%

June 30, 2026

Summary

Current Value: As of today, ATO quarterly gross margin is 50.75%, up +10.21% on June 30, 2026
Historical Performance: ATO quarterly gross margin is up +12.90% year-over-year, up +23.48% over the past 3 years
All-Time High Comparison: ATO quarterly gross margin is currently at its all-time high
3-Year Low Comparison: ATO quarterly gross margin is +31.07% above its 3-year low of 38.72% reached on March 31, 2025
Sector Comparison: ATO quarterly gross margin is higher than 88.89% of companies in Utilities sector

Performance

ATO Performance
Metric	Date	Value	3M	1Y	3Y	5Y
Quarterly Gross Margin	Jun 30, 26	50.75%	+10.2%	+12.9%	+23.5%	+43.0%
Annual Gross Margin	Sep 30, 25	42.51%	–	+1.6%	+40.3%	+8.8%
Price	Aug 24, 26	$167.82	-5.6%	-0.2%	+44.2%	+71.0%
PE Ratio	Aug 24, 26	19.98	-8.7%	-14.0%	+0.3%	+8.2%
Quarterly Revenue	Jun 30, 26	$879.06M	-55.2%	+4.8%	+32.6%	+45.2%
Quarterly Gross Profit	Jun 30, 26	$446.16M	-50.6%	+18.3%	+63.8%	+107.7%
Quarterly Operating Margin	Jun 30, 26	36.45%	-6.5%	+21.3%	+42.7%	+65.5%
Quarterly Net Margin	Jun 30, 26	27.60%	-6.9%	+24.2%	+32.8%	+63.3%

Quarterly Gross Margin Highs

ATO Quarterly Gross Margin Highs Comparison
Period	High	Date	Current
1Y	50.75%	Jun 30, 26	at high
3Y	50.75%	Jun 30, 26	at high
5Y	50.75%	Jun 30, 26	at high
All	50.75%	Jun 30, 26	at high

Quarterly Gross Margin Lows

ATO Quarterly Gross Margin Lows Comparison
Period	Low	Date	Current
1Y	42.36%	Sep 30, 25	+19.8%
3Y	38.72%	Mar 31, 25	+31.1%
5Y	25.75%	Sep 30, 22	+97.1%
All	9.85%	Sep 30, 12	+415.2%

Quarterly Gross Margin History

Month	Value	Change
Jun 2026	50.75%	+10.2%
Mar 2026	46.05%	-0.6%
Dec 2025	46.34%	+9.4%
Sep 2025	42.36%	-5.8%
Jun 2025	44.95%	+16.1%
Mar 2025	38.72%	-17.9%
Dec 2024	47.14%	+15.0%
Sep 2024	41.00%	-11.8%
Jun 2024	46.47%	+16.3%
Mar 2024	39.94%	-5.3%
Dec 2023	42.18%	+5.4%
Sep 2023	40.01%	-2.7%
Jun 2023	41.10%	+19.1%
Mar 2023	34.51%	+23.5%
Dec 2022	27.95%	+8.5%
Sep 2022	25.75%	-16.2%
Jun 2022	30.71%	+5.2%
Mar 2022	29.20%	-16.6%
Dec 2021	35.02%	+24.1%
Sep 2021	28.21%	-20.5%
Jun 2021	35.48%	-0.5%
Mar 2021	35.65%	-12.4%
Dec 2020	40.71%	+17.1%
Sep 2020	34.76%	-18.5%
Jun 2020	42.67%	+2.7%
Mar 2020	41.53%	+13.1%
Dec 2019	36.71%	+7.6%
Sep 2019	34.11%	-13.8%
Jun 2019	39.56%	+14.9%
Mar 2019	34.42%	+0.4%
Dec 2018	34.29%	+4.4%
Sep 2018	32.86%	-6.2%
Jun 2018	35.03%	+24.2%
Mar 2018	28.20%	-17.7%
Dec 2017	34.28%	+8.7%
Sep 2017	31.53%	-18.5%
Jun 2017	38.67%	+8.9%
Mar 2017	35.51%	+5.1%
Dec 2016	33.78%	+9.2%
Sep 2016	30.93%	-24.7%
Jun 2016	41.07%	+16.7%
Mar 2016	35.20%	-14.3%
Dec 2015	41.06%	+99.8%
Sep 2015	20.55%	-25.5%
Jun 2015	27.60%	+30.4%
Mar 2015	21.16%	+11.9%
Dec 2014	18.91%	-0.9%
Sep 2014	19.09%	+9.3%
Jun 2014	17.46%	+11.9%
Mar 2014	15.61%	-6.5%
Dec 2013	16.69%	+19.2%
Sep 2013	14.00%	-7.0%
Jun 2013	15.05%	-27.6%
Mar 2013	20.79%	+16.1%
Dec 2012	17.91%	+81.8%
Sep 2012	9.85%	-53.2%
Jun 2012	21.04%	-11.0%
Mar 2012	23.64%	+36.0%
Dec 2011	17.38%	-24.5%
Sep 2011	23.03%	-6.8%
Jun 2011	24.71%	-1.4%
Mar 2011	25.06%	-8.6%
Dec 2010	27.43%	+13.6%
Sep 2010	24.14%	-7.0%
Jun 2010	25.96%	+25.5%

Month	Value	Change
Mar 2010	20.68%	-21.5%
Dec 2009	26.35%	-2.2%
Sep 2009	26.95%	+2.4%
Jun 2009	26.31%	+17.9%
Mar 2009	22.32%	+12.0%
Dec 2008	19.93%	+31.6%
Sep 2008	15.15%	+26.8%
Jun 2008	11.95%	-23.0%
Mar 2008	15.52%	-19.9%
Dec 2007	19.37%	+15.6%
Sep 2007	16.76%	+14.0%
Jun 2007	14.70%	-19.2%
Mar 2007	18.19%	-10.7%
Dec 2006	20.38%	-6.5%
Sep 2006	21.79%	+19.3%
Jun 2006	18.26%	+3.6%
Mar 2006	17.62%	+32.7%
Dec 2005	13.28%	-16.8%
Sep 2005	15.96%	-19.7%
Jun 2005	19.88%	+0.5%
Mar 2005	19.78%	-3.5%
Dec 2004	20.49%	+61.0%
Sep 2004	12.73%	-17.4%
Jun 2004	15.42%	-5.9%
Mar 2004	16.38%	-7.8%
Dec 2003	17.76%	-0.6%
Sep 2003	17.87%	-30.8%
Jun 2003	25.83%	+0.7%
Mar 2003	25.66%	-7.5%
Dec 2002	27.74%	-1.5%
Sep 2002	28.16%	-14.8%
Jun 2002	33.05%	-3.4%
Mar 2002	34.22%	+4.5%
Dec 2001	32.76%	+15.7%
Sep 2001	28.31%	-10.3%
Jun 2001	31.57%	+74.1%
Mar 2001	18.13%	-14.8%
Dec 2000	21.27%	-41.6%
Sep 2000	36.45%	+23.7%
Jun 2000	29.46%	-8.9%
Mar 2000	32.35%	-0.6%
Dec 1999	32.55%	+29.5%
Sep 1999	25.13%	-30.0%
Jun 1999	35.89%	-4.8%
Mar 1999	37.71%	+2.1%
Dec 1998	36.92%	-7.9%
Sep 1998	40.07%	-4.2%
Jun 1998	41.81%	+24.0%
Dec 1997	33.73%	-16.7%
Sep 1997	40.48%	-2.2%
Jun 1997	41.41%	+20.9%
Mar 1997	34.25%	-1.1%
Dec 1996	34.64%	-6.4%
Sep 1996	37.00%	+2.5%
Jun 1996	36.11%	+5.5%
Mar 1996	34.22%	-12.1%
Dec 1995	38.93%	-7.0%
Sep 1995	41.84%	+3.9%
Jun 1995	40.26%	+6.3%
Mar 1995	37.89%	+2.9%
Dec 1994	36.84%	-0.4%
Sep 1994	37.00%	+4.7%
Jun 1994	35.33%	+11.3%
Mar 1994	31.73%	-4.6%
Dec 1993	33.26%	-

FAQ

What is the current quarterly gross margin of ATO?: As of today, ATO quarterly gross margin is 50.75%
What is ATO quarterly gross margin most recent change?: ATO quarterly gross margin was up +10.21% on June 30, 2026
What is 1-year change in ATO quarterly gross margin?: ATO quarterly gross margin is up +12.90% year-over-year
How far is ATO quarterly gross margin from its all-time high?: ATO quarterly gross margin is currently at its all-time high
How does ATO quarterly gross margin rank versus sector peers?: ATO quarterly gross margin is higher than 88.89% of companies in Utilities sector
When is ATO next earnings release?: The next earnings release for ATO is on November 4, 2026

Gross Margin Formula

Gross Margin = Gross Profit

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