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: 6; +1 vs. Q2 2026
Shares held: 3.86K; +478 (+14.1%) vs. Q2 2026
Total value: $604.6K; +$21.4K (+3.7%) vs. Q2 2026
New holders: 1; 2 more added
Sold out: 0; 0 more reduced

1,039 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
Pathstone Holdings, LLC	–	–	–	–	Not filed
Ilmarinen Mutual Pension Insurance Co	–	–	–	–	Not filed
Wakefield Asset Management LLLP	–	–	–	–	Not filed
Oak Thistle LLC	–	–	–	–	Not filed
Navellier & Associates Inc	–	–	–	–	Not filed
Pring Turner Capital Group Inc	–	–	–	–	Not filed
Sumitomo Mitsui DS Asset Management Company, Ltd	–	–	–	–	Not filed
Elo Mutual Pension Insurance Co	–	–	–	–	Not filed
Ethic Inc.	–	–	–	–	Not filed
Qsemble Capital Management, LP	–	–	–	–	Not filed
Moran Wealth Management, LLC	–	–	–	–	Not filed
Glenmede Trust Co NA	–	–	–	–	Not filed
Y-Intercept (Hong Kong) Ltd	–	–	–	–	Not filed
Brinker Capital Investments, LLC	–	–	–	–	Not filed
Vestcor Inc	–	–	–	–	Not filed
Oregon Public Employees Retirement Fund	–	–	–	–	Not filed
Commonwealth Equity Services, LLC	–	–	–	–	Not filed
Orion Investment Co	–	–	–	–	Not filed
Cambiar Investors LLC	–	–	–	–	Not filed
Crossmark Global Holdings, Inc.	–	–	–	–	Not filed
Bleakley Financial Group, LLC	–	–	–	–	Not filed
Fuller & Thaler Asset Management, Inc.	–	–	–	–	Not filed
SummitTX Capital, L.P.	–	–	–	–	Not filed
Ausbil Investment Management Ltd	–	–	–	–	Not filed
Capital International Sarl	–	–	–	–	Not filed
UniSuper Management Pty Ltd	–	–	–	–	Not filed
Vestmark Advisory Solutions, Inc.	–	–	–	–	Not filed
Rafferty Asset Management, LLC	–	–	–	–	Not filed
Legacy Financial Strategies, LLC	–	–	–	–	Not filed
Danske Bank A/S	–	–	–	–	Not filed
Vident Advisory, LLC	–	–	–	–	Not filed
ISAM Funds (UK) Ltd	–	–	–	–	Not filed
OP Asset Management Ltd	–	–	–	–	Not filed
Prospera Financial Services Inc	–	–	–	–	Not filed
Fideuram Asset Management (Ireland) dac	–	–	–	–	Not filed
Obermeyer Wood Investment Counsel, LLLP	–	–	–	–	Not filed
PDT Partners, LLC	–	–	–	–	Not filed
Albert D Mason Inc	–	–	–	–	Not filed
State of Alaska, Department of Revenue	–	–	–	–	Not filed
Allstate Corp	–	–	–	–	Not filed
Kentucky Trust Co	–	–	–	–	Not filed
Allianz SE	–	–	–	–	Not filed
Machina Capital S.A.S.	–	–	–	–	Not filed
Reaves W H & Co Inc	–	–	–	–	Not filed
Integrated Wealth Concepts LLC	–	–	–	–	Not filed
Generali Asset Management SPA SGR	–	–	–	–	Not filed
Hennion & Walsh Asset Management, Inc.	–	–	–	–	Not filed
Rockefeller Capital Management L.P.	–	–	–	–	Not filed
Hancock Whitney Corp	–	–	–	–	Not filed
GWM Advisors LLC	–	–	–	–	Not filed
SRS Capital Advisors, Inc.	–	–	–	–	Not filed
Raiffeisen Bank International AG	–	–	–	–	Not filed
Ilex Capital Partners (UK) LLP	–	–	–	–	Not filed
Phillips Financial Management, LLC	–	–	–	–	Not filed
Chicago Partners Investment Group LLC	–	–	–	–	Not filed
Prudential PLC	–	–	–	–	Not filed
Nordea Investment Management AB	–	–	–	–	Not filed
Nomura Holdings Inc	–	–	–	–	Not filed
AE Wealth Management LLC	–	–	–	–	Not filed
Abn Amro Investment Solutions	–	–	–	–	Not filed
BKD Wealth Advisors, LLC	–	–	–	–	Not filed
Jupiter Topco LLC	–	–	–	–	Not filed
First National Bank of Omaha	–	–	–	–	Not filed
Blair William & Co	–	–	–	–	Not filed
Town & Country Bank & Trust CO dba First Bankers Trust CO	–	–	–	–	Not filed
O'Shaughnessy Asset Management, LLC	–	–	–	–	Not filed
Cordatus Wealth Management LLC	–	–	–	–	Not filed
RD Lewis Holdings, Inc.	–	–	–	–	Not filed
Trust Co of Vermont	–	–	–	–	Not filed
Dean Capital Management	–	–	–	–	Not filed
LRT Capital Management, LLC	–	–	–	–	Not filed
First National Advisers, LLC	–	–	–	–	Not filed
Delta Global Management LP	–	–	–	–	Not filed
Thrivent Financial for Lutherans	–	–	–	–	Not filed
Trustmark National Bank Trust Department	–	–	–	–	Not filed
Private Advisor Group, LLC	–	–	–	–	Not filed
Mizuho Securities USA LLC	–	–	–	–	Not filed
Buckhead Capital Management LLC	–	–	–	–	Not filed
Credit Agricole S A	–	–	–	–	Not filed
AG2R la Mondiale Gestion D'Actifs	–	–	–	–	Not filed
Dark Forest Capital Management LP	–	–	–	–	Not filed
Apollon Wealth Management, LLC	–	–	–	–	Not filed
Excelsior Advisor Network LLC	–	–	–	–	Not filed
Whittier Trust Co	–	–	–	–	Not filed
DC Investments Management, LLC	–	–	–	–	Not filed
Pacer Advisors, Inc.	–	–	–	–	Not filed
Gulf International Bank (UK) Ltd	–	–	–	–	Not filed
US Bancorp	–	–	–	–	Not filed
Boothbay Fund Management, LLC	–	–	–	–	Not filed
Fox Run Management, L.L.C.	–	–	–	–	Not filed
Park Avenue Securities LLC	–	–	–	–	Not filed
Aigen Investment Management, LP	–	–	–	–	Not filed
Mitsubishi UFJ Asset Management (UK) Ltd.	–	–	–	–	Not filed
BFSG, LLC	–	–	–	–	Not filed
Concurrent Investment Advisors, LLC	–	–	–	–	Not filed
Saudi Central Bank	–	–	–	–	Not filed
Ameritas Investment Partners, Inc.	–	–	–	–	Not filed
Nicholson Wealth Management Group, LLC	–	–	–	–	Not filed
Lido Advisors, LLC	–	–	–	–	Not filed
Cannon Advisors, Inc.	–	–	–	–	Not filed