Atmos Energy Corp

ATO

Exchange: NYSE
Industry: Natural Gas Distribution
SEC CIK: 0000731802

SEC filings (opens in a new tab)

In the last 90 days, Atmos Energy Corp insiders filed 1 open-market purchase and 0 sales; 1,044 institutions reported holding it in 13F filings for Q2 2026, worth $28.0B in total; no superinvestor holds it.

13F holders, Q3 2026

Institutional positions in Atmos Energy Corp as of Sep 30, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Q3 2026 data is still coming in (13F filing deadline: Nov 16, 2026), so these numbers are incomplete.

Institutional holders: 10; 0 vs. Q2 2026
Shares held: 54.6K; −2.49K (−4.4%) vs. Q2 2026
Total value: $8.55M; −$1.29M (−13.1%) vs. Q2 2026
New holders: 1; 2 more added
Sold out: 1; 2 more reduced

1,034 institutions that held it in Q2 2026 haven't filed for Q3 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 2026: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting ATO on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holders

Value held

Institutions holding ATO and their total value by quarter
Quarter	Holders	Value
Q2 2026	1,044	$28.0B
Q1 2026	1,020	$29.6B
Q4 2025	980	$27.2B
Q3 2025	912	$27.2B
Q2 2025	871	$24.7B
Q1 2025	861	$24.4B
Q4 2024	818	$21.8B
Q3 2024	758	$20.8B
Q2 2024	736	$16.7B
Q1 2024	731	$16.6B
Q4 2023	722	$15.8B
Q3 2023	669	$14.4B
Q2 2023	672	$15.8B
Q1 2023	664	$14.7B
Q4 2022	663	$14.6B
Q3 2022	631	$13.1B
Q2 2022	620	$14.2B
Q1 2022	608	$14.9B
Q4 2021	575	$12.4B
Q3 2021	536	$9.93B
Q2 2021	548	$10.5B
Q1 2021	550	$10.7B

Institutions, Q3 2026

Shares, value and share of portfolio for each institution holding Atmos Energy Corp; share changes are against Q2 2026.

Institutions holding ATO in Q3 2026
Institution	Shares	Value	% of portfolio	Change in shares	Action
J. Team Financial, Inc.	–	–	–	–	Not filed
Mainsail Asset Management, LLC	–	–	–	–	Not filed
Tradition Wealth Management, LLC	–	–	–	–	Not filed
Summit Financial Wealth Advisors, LLC	–	–	–	–	Not filed
Tocqueville Asset Management L.P.	–	–	–	–	Not filed
Woodmont Investment Counsel LLC	–	–	–	–	Not filed
Prime Capital Investment Advisors, LLC	–	–	–	–	Not filed
Plan A Wealth LLC	–	–	–	–	Not filed
Resurgent Financial Advisors LLC	–	–	–	–	Not filed
Voleon Capital Management LP	–	–	–	–	Not filed
Wedmont Private Capital	–	–	–	–	Not filed
Fidelis Capital Partners, LLC	–	–	–	–	Not filed
Kathmere Capital Management, LLC	–	–	–	–	Not filed
Graham Capital Management, L.P.	–	–	–	–	Not filed
RIA Advisory Group LLC	–	–	–	–	Not filed
Regent Peak Wealth Advisors LLC	–	–	–	–	Not filed
Associated Banc-Corp	–	–	–	–	Not filed
Carbahal Olsen Financial Services Group, LLC	–	–	–	–	Not filed
Evergreen Wealth Partners LLC	–	–	–	–	Not filed
Oslo Pensjonsforsikring AS	–	–	–	–	Not filed
Ameritas Advisory Services, LLC	–	–	–	–	Not filed
Prelude Capital Management, LLC	–	–	–	–	Not filed
Optimize Financial Inc	–	–	–	–	Not filed
Sound Capital Solutions LLC	–	–	–	–	Not filed
Abel Hall, LLC	–	–	–	–	Not filed
Investment Research Partners LLC	–	–	–	–	Not filed
Keystone Financial Group, Inc.	–	–	–	–	Not filed
Lummis Asset Management, LP	–	–	–	–	Not filed
Parkside Financial Bank & Trust	–	–	–	–	Not filed
Virtus ETF Advisers LLC	–	–	–	–	Not filed
Essential Partners LLC	–	–	–	–	Not filed
MidFirst Bank	–	–	–	–	Not filed
Smithfield Trust Co	–	–	–	–	Not filed
Rothschild Investment LLC	–	–	–	–	Not filed
Pinnacle Bancorp, Inc.	–	–	–	–	Not filed
Ancora Advisors, LLC	–	–	–	–	Not filed
Tiaa Trust, National Association	–	–	–	–	Not filed
Hilltop National Bank	–	–	–	–	Not filed
Trust Co of Toledo NA	–	–	–	–	Not filed
HM Payson & Co	–	–	–	–	Not filed
BankPlus Trust Department	–	–	–	–	Not filed
Financial Network Wealth Advisors LLC	–	–	–	–	Not filed
Geneos Wealth Management Inc.	–	–	–	–	Not filed
Wellington-Altus USA Inc.	–	–	–	–	Not filed
Clark Wealth Partners	–	–	–	–	Not filed
Vanguard National Trust Co	–	–	–	–	Not filed
Cary Street Partners Financial LLC	–	–	–	–	Not filed
Colonial Trust Advisors	–	–	–	–	Not filed
Armstrong Advisory Group, Inc	–	–	–	–	Not filed
Godsey & Gibb Associates	–	–	–	–	Not filed
Peterson Wealth Management	–	–	–	–	Not filed
Livforsakringsbolaget Skandia, Omsesidigt	–	–	–	–	Not filed
Wall Street Access Asset Management, LLC	–	–	–	–	Not filed
RMG Wealth Management LLC	–	–	–	–	Not filed
Cromwell Holdings LLC	–	–	–	–	Not filed
Westside Investment Management, Inc.	–	–	–	–	Not filed
Quent Capital, LLC	–	–	–	–	Not filed
Onefund, LLC	–	–	–	–	Not filed
Contravisory Investment Management, Inc.	–	–	–	–	Not filed
IFG Advisory, LLC	–	–	–	–	Not filed
Walleye Capital LLC	–	–	–	–	Not filed
Bruce G. Allen Investments, LLC	–	–	–	–	Not filed
Transamerica Financial Advisors, Inc.	–	–	–	–	Not filed
PFS Partners, LLC	–	–	–	–	Not filed
Cape Investment Advisory, Inc.	–	–	–	–	Not filed
Deseret Mutual Benefit Administrators	–	–	–	–	Not filed
Medallion Wealth Advisors, LLC	–	–	–	–	Not filed
Lloyd Advisory Services, LLC.	–	–	–	–	Not filed
Prosperity Bancshares Inc	–	–	–	–	Not filed
Colonial Trust Co	–	–	–	–	Not filed
Towarzystwo Funduszy Inwestycyjnych Pzu SA	–	–	–	–	Not filed
TD Private Client Wealth LLC	–	–	–	–	Not filed
Beacon Investment Advisory Services, Inc.	–	–	–	–	Not filed
Zions Bancorporation, National Association	–	–	–	–	Not filed
Keating Financial Advisory Services, Inc.	–	–	–	–	Not filed
Cetera Trust Company, N.A	–	–	–	–	Not filed
SJS Investment Consulting Inc.	–	–	–	–	Not filed
True Wealth Design, LLC	–	–	–	–	Not filed
Kingdom Financial Group LLC.	–	–	–	–	Not filed
Harel Insurance Investments & Financial Services Ltd.	–	–	–	–	Not filed
Bryn Mawr Trust Co	–	–	–	–	Not filed
CVA Family Office, LLC	–	–	–	–	Not filed
SBI Securities Co., Ltd.	–	–	–	–	Not filed
Paladin Partners, LLC	–	–	–	–	Not filed
First National Bank	–	–	–	–	Not filed
First Financial Corp	–	–	–	–	Not filed
St Germain D J Co Inc	–	–	–	–	Not filed
Delta Asset Management LLC	–	–	–	–	Not filed
Elevated Capital Advisors, LLC	–	–	–	–	Not filed
Covestor Ltd	–	–	–	–	Not filed
Private Trust Co NA	–	–	–	–	Not filed
Hollencrest Capital Management	–	–	–	–	Not filed
Ogorek Anthony Joseph	–	–	–	–	Not filed
Princeton Global Asset Management LLC	–	–	–	–	Not filed
Wealth Enhancement Trust Services, Inc.	–	–	–	–	Not filed
ZRC Wealth Management, LLC	–	–	–	–	Not filed
JFS Wealth Advisors, LLC	–	–	–	–	Not filed
NBC Securities, Inc.	–	–	–	–	Not filed
Hanson & Doremus Investment Management	–	–	–	–	Not filed
Caldwell Trust Co	–	–	–	–	Not filed