What is Atmos Energy's diluted shares outstanding?

Latest reported diluted shares outstanding for Atmos Energy (ATO) is 168M as of the trailing twelve months (TTM) ending March 31, 2026.

How has Atmos Energy diluted shares outstanding changed year-over-year?

Atmos Energy (ATO) diluted shares outstanding changed +5.2% year-over-year on the latest annual filing.

What is the long-term growth rate of Atmos Energy diluted shares outstanding?

Atmos Energy (ATO) diluted shares outstanding compound annual growth rate is +5.5% over the most recent 5 years available.

When did Atmos Energy diluted shares outstanding hit its highest annual value?

Atmos Energy diluted shares outstanding reached its highest annual value of 161M in 2025.

What was Atmos Energy diluted shares outstanding in 2024?

Atmos Energy (ATO) diluted shares outstanding in 2024 was 153M.

What was Atmos Energy diluted shares outstanding in 2025?

Atmos Energy (ATO) diluted shares outstanding in 2025 was 161M.

Atmos Energy (ATO) Shares Outstanding 1985-2026

Latest period

168M

YoY change

+5.2%

5Y CAGR

+5.5%

Peak year (FY2025)

161M

Shares Outstanding history chart for Atmos Energy (ATO) from 2016 to 2025

Latest: 161M

Shares Outstanding growth chart for Atmos Energy (ATO) from 2016 to 2025

Latest: +5.2%

Shares Outstanding history table for Atmos Energy (ATO) from 1985 to 2025


FY2025	161M	+5.2%	+7.91M	Sep 30, 2025	Nov 14, 2025
FY2024	153M	+5.2%	+7.5M	Sep 30, 2024	Nov 18, 2024
FY2023	145M	+5.1%	+7.07M	Sep 30, 2023	Nov 14, 2023
FY2022	138M	+6.4%	+8.26M	Sep 30, 2022	Nov 14, 2022
FY2021	130M	+5.7%	+6.96M	Sep 30, 2021	Nov 12, 2021
FY2020	123M	+4.6%	+5.41M	Sep 30, 2020	Nov 13, 2020
FY2019	117M	+5.8%	+6.45M	Sep 30, 2019	Nov 12, 2019
FY2018	111M	+4.6%	+4.91M	Sep 30, 2018	Nov 13, 2018
FY2017	106M	+2.5%	+2.58M	Sep 30, 2017	Nov 13, 2017
FY2016	104M	+1.6%	+1.63M	Sep 30, 2016	Nov 14, 2016
FY2015	102M	+4.4%	+4.28M	Sep 30, 2015	Nov 6, 2015
FY2014	97.6M	+6.4%	+5.9M	Sep 30, 2014	Nov 6, 2014
FY2013	91.7M	+0.6%	+539K	Sep 30, 2013	Nov 13, 2013
FY2012	91.2M	+0.6%	+520K	Sep 30, 2012	Nov 13, 2012
FY2011	90.7M	-1.9%	-1.77M	Sep 30, 2011	Nov 22, 2011
FY2010	92.4M	+0.4%	+398K	Sep 30, 2010	Nov 12, 2010
FY2009	92M	+1.9%	+1.75M	Sep 30, 2009	Nov 16, 2009
FY2008	90.3M	+2.9%	+2.53M	Sep 30, 2008	Nov 19, 2008
FY2007	87.7M	+7.8%	+6.36M	Sep 30, 2007	Nov 29, 2007
FY2006	81.4M	+3.0%	+2.38M	Sep 30, 2006	Nov 22, 2006
FY2005	79M	+45.2%	+24.6M	Sep 30, 2005	Nov 18, 2005
FY2004	54.4M	+17.0%	+7.92M	Sep 30, 2004	Nov 19, 2004
FY2003	46.5M	+12.7%	+5.25M	Sep 30, 2003	Nov 21, 2003
FY2002	41.3M	+7.9%	+3M	Sep 30, 2002	Nov 22, 2002
FY2001	38.2M	+21.1%	+6.65M	Sep 30, 2001	Nov 21, 2001
FY2000	31.6M	+2.5%	+775K	Sep 30, 2000	Nov 15, 2000
FY1999	30.8M	+2.6%	+788K	Sep 30, 1999	Dec 14, 1999
FY1998	30M	+2.2%	+648K	Sep 30, 1998	Dec 22, 1998
FY1997	29.4M	+85.4%	+13.5M	Sep 30, 1997	Dec 22, 1997
FY1996	15.9M	+2.8%	+439K	Sep 30, 1996	Nov 13, 1996
FY1995	15.4M	+1.4%	+219K	Sep 30, 1995	Dec 14, 1995
FY1994	15.2M	+40.3%	+4.37M	Sep 30, 1994	Dec 15, 1994
FY1993	10.8M	+5.0%	+518K	Sep 30, 1993	Jun 30, 1994
FY1992	10.3M	+4.4%	+434K	Sep 30, 1992	Sep 30, 1992
FY1991	9.88M	+7.5%	+691K	Sep 30, 1991	Sep 30, 1991
FY1990	9.18M	+0.9%	+82.5K	Sep 30, 1990	Sep 30, 1990
FY1989	9.1M	+30.5%	+2.13M	Sep 30, 1989	Sep 30, 1989
FY1988	6.97M	+13.6%	+837K	Sep 30, 1988	Sep 30, 1988
FY1987	6.14M	+4.5%	+263K	Sep 30, 1987	Sep 30, 1987
FY1986	5.87M	+4.9%	+273K	Sep 30, 1986	Sep 30, 1986
FY1985	5.6M	—	—	Sep 30, 1985	Sep 30, 1985

FY2025161M+5.2%
FY2024153M+5.2%
FY2023145M+5.1%
FY2022138M+6.4%
FY2021130M+5.7%
FY2020123M+4.6%
FY2019117M+5.8%
FY2018111M+4.6%
FY2017106M+2.5%
FY2016104M+1.6%
FY2015102M+4.4%
FY201497.6M+6.4%
FY201391.7M+0.6%
FY201291.2M+0.6%
FY201190.7M-1.9%
FY201092.4M+0.4%
FY200992M+1.9%
FY200890.3M+2.9%
FY200787.7M+7.8%
FY200681.4M+3.0%
FY200579M+45.2%
FY200454.4M+17.0%
FY200346.5M+12.7%
FY200241.3M+7.9%
FY200138.2M+21.1%
FY200031.6M+2.5%
FY199930.8M+2.6%
FY199830M+2.2%
FY199729.4M+85.4%
FY199615.9M+2.8%
FY199515.4M+1.4%
FY199415.2M+40.3%
FY199310.8M+5.0%
FY199210.3M+4.4%
FY19919.88M+7.5%
FY19909.18M+0.9%
FY19899.1M+30.5%
FY19886.97M+13.6%
FY19876.14M+4.5%
FY19865.87M+4.9%
FY19855.6M—

Shares Outstanding values are taken from Atmos Energy's reported income statements (quarterly 10-Q and annual 10-K filings with the U.S. Securities and Exchange Commission). Each row shows the period end date and the filing date. YoY compares each figure to the same period one year earlier. Amounts are in USD as filed.

About Shares Outstanding at Atmos Energy (ATO)

According to Atmos Energy's latest reported financial statements, the company's latest reported diluted shares outstanding is 168M. Diluted weighted-average shares outstanding is the share count used to compute per-share metrics like EPS. Buybacks lower it; new issuance, stock-based compensation, and convertible securities raise it. Multiply by the stock price for market capitalization.

Headline figure above is from the reporting period ending March 31, 2026 (reported May 6, 2026). Chart and table below cover the full reported history back to 1985.

Atmos Energy (ATO) most recent annual diluted shares outstanding stands at 161M (2025) – grew 5.2% year-over-year.

Atmos Energy diluted shares outstanding has grown for 14 consecutive years, with a +5.5% compound annual growth rate over 2020–2025 (5 years).

The highest annual diluted shares outstanding of 161M was reported in 2025. The lowest in the available history was 5.6M in 1985.

Atmos Energy Shares Outstanding by Year

Atmos Energy Shares Outstanding 2025: 161M

Atmos Energy diluted shares outstanding in 2025 was 161M, grew 5.2% from 2024. This figure represents the highest annual value in the available history.

Atmos Energy Shares Outstanding 2024: 153M

2024's diluted shares outstanding for Atmos Energy came in at 153M, grew 5.2% from 2023.

Atmos Energy Shares Outstanding 2023: 145M

Atmos Energy posted diluted shares outstanding of 145M in 2023, grew 5.1% from 2022.

Atmos Energy Shares Outstanding 2022: 138M

In 2022, Atmos Energy reported diluted shares outstanding of 138M, grew 6.4% from 2021.

Atmos Energy Shares Outstanding 2021: 130M

Atmos Energy diluted shares outstanding in 2021 was 130M.

See more financial history for Atmos Energy (ATO).

Sector peers by Shares Outstanding

Utilities peers of Atmos Energy (ATO), ranked by their latest diluted shares outstanding


NextEra Energy (NEE)	2.09B
Southern Company (SO)	1.11B
Dominion Energy (D)	855M
Duke Energy (DUK)	777M
Sempra (SRE)	653M
American Electric Power Company (AEP)	520M
Constellation Energy (CEG)	314M
GE Vernova (GEV)	276M

NextEra Energy (NEE)
2.09B
Southern Company (SO)
1.11B
Dominion Energy (D)
855M
Duke Energy (DUK)
777M
Sempra (SRE)
653M
American Electric Power Company (AEP)
520M
Constellation Energy (CEG)
314M
GE Vernova (GEV)
276M

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