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Atmos Energy Corp

ATO
Exchange
NYSE
Industry
Natural Gas Distribution
SEC CIK
0000731802

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, Q4 2025

Institutional positions in Atmos Energy Corp as of Dec 31, 2025. 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

Institutional holders
980
+81 vs. Q3 2025
Shares held
162.1M
+2.64M (+1.7%) vs. Q3 2025
Total value
$27.2B
−$53.9M (−0.2%) vs. Q3 2025
New holders
144
362 more added
Sold out
63
307 more reduced

13 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 2025: 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 holdersQ4 2025: 980 institutions
Q1 2021: 550 institutionsQ2 2021: 548 institutionsQ3 2021: 536 institutionsQ4 2021: 575 institutionsQ1 2022: 608 institutionsQ2 2022: 620 institutionsQ3 2022: 631 institutionsQ4 2022: 663 institutionsQ1 2023: 664 institutionsQ2 2023: 672 institutionsQ3 2023: 669 institutionsQ4 2023: 722 institutionsQ1 2024: 731 institutionsQ2 2024: 736 institutionsQ3 2024: 758 institutionsQ4 2024: 818 institutionsQ1 2025: 861 institutionsQ2 2025: 871 institutionsQ3 2025: 912 institutionsQ4 2025: 980 institutionsQ1 2026: 1,020 institutionsQ2 2026: 1,044 institutions
Value heldQ4 2025: $27.2B
Q1 2021: $10.7BQ2 2021: $10.5BQ3 2021: $9.93BQ4 2021: $12.4BQ1 2022: $14.9BQ2 2022: $14.2BQ3 2022: $13.1BQ4 2022: $14.6BQ1 2023: $14.7BQ2 2023: $15.8BQ3 2023: $14.4BQ4 2023: $15.8BQ1 2024: $16.6BQ2 2024: $16.7BQ3 2024: $20.8BQ4 2024: $21.8BQ1 2025: $24.4BQ2 2025: $24.7BQ3 2025: $27.2BQ4 2025: $27.2BQ1 2026: $29.6BQ2 2026: $28.0B
Institutions holding ATO and their total value by quarter
QuarterHoldersValue
Q2 20261,044$28.0B
Q1 20261,020$29.6B
Q4 2025980$27.2B
Q3 2025912$27.2B
Q2 2025871$24.7B
Q1 2025861$24.4B
Q4 2024818$21.8B
Q3 2024758$20.8B
Q2 2024736$16.7B
Q1 2024731$16.6B
Q4 2023722$15.8B
Q3 2023669$14.4B
Q2 2023672$15.8B
Q1 2023664$14.7B
Q4 2022663$14.6B
Q3 2022631$13.1B
Q2 2022620$14.2B
Q1 2022608$14.9B
Q4 2021575$12.4B
Q3 2021536$9.93B
Q2 2021548$10.5B
Q1 2021550$10.7B

Institutions, Q4 2025

Shares, value and share of portfolio for each institution holding Atmos Energy Corp; share changes are against Q3 2025.

Institutions holding ATO in Q4 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Anchor Investment Management, LLC8,172$1.37M0.11%00.0%Unchanged
Louisiana State Employees Retirement System8,200$1.37M0.02%−200−2.4%Reduced
Summit Trail Advisors, LLC8,226$1.38M0.02%+2,949+55.9%Added
Colony Group, LLC8,401$1.41M0.00%+3,494+71.2%Added
CX Institutional8,438$1.41M0.04%+33+0.4%Added
Gulf International Bank (UK) Ltd8,525$1.43M0.05%00.0%Unchanged
AG2R la Mondiale Gestion D'Actifs8,610$1.44M0.06%+730+9.3%Added
Kovack Advisors, Inc.8,674$1.45M0.07%+8,674New
Concurrent Investment Advisors, LLC8,748$1.47M0.02%+2,438+38.6%Added
Croban8,879$1.49M0.72%+103+1.2%Added
17 Capital Partners, LLC9,056$1.52M0.79%−22−0.2%Reduced
US Bancorp9,070$1.52M0.00%+162+1.8%Added
AMG National Trust Bank9,168$1.54M0.04%00.0%Unchanged
Fruth Investment Management9,181$1.54M0.42%00.0%Unchanged
Scotia Capital Inc.9,203$1.54M0.01%−82−0.9%Reduced
Delta Financial Advisors LLC9,214$1.54M0.40%+15+0.2%Added
Kesler, Norman & Wride, LLC9,329$1.56M0.27%+7,018+303.7%Added
Hartford Investment Management Co9,341$1.57M0.05%−128−1.4%Reduced
Tyche Wealth Partners LLC9,401$1.58M0.25%+4,416+88.6%Added
Nordea Investment Management AB9,406$1.58M0.00%+217+2.4%Added
Metis Global Partners, LLC9,444$1.58M0.04%+4,066+75.6%Added
Sterling Capital Management LLC9,488$1.59M0.03%−297−3.0%Reduced
TCTC Holdings, LLC9,500$1.59M0.05%00.0%Unchanged
Wakefield Asset Management LLLP9,593$1.61M0.44%+9,593New
Jane Street Group, LLC9,664$1.62M0.00%−108,970−91.9%Reduced
SBI Okasan Asset Management Co.Ltd.9,600$1.62M0.09%+9,600New
Callan Family Office, LLC9,709$1.63M0.03%+5,158+113.3%Added
Little House Capital LLC9,752$1.63M0.41%−981−9.1%Reduced
Campbell & CO Investment Adviser LLC9,807$1.64M0.08%+6,456+192.7%Added
OmniStar Financial Group, Inc.9,848$1.65M0.97%+569+6.1%Added
Kentucky Retirement Systems9,935$1.67M0.05%00.0%Unchanged
ING Groep NV10,045$1.68M0.01%+10,045New
AE Wealth Management LLC10,266$1.72M0.01%+628+6.5%Added
Keybank National Association10,363$1.74M0.01%+27+0.3%Added
Raiffeisen Bank International AG10,332$1.74M0.02%−700−6.3%Reduced
GWM Advisors LLC10,394$1.74M0.01%−165−1.6%Reduced
Wealthspire Advisors, LLC10,399$1.74M0.01%+1,011+10.8%Added
Norinchukin Bank, The10,569$1.77M0.02%+836+8.6%Added
Mercer Global Advisors Inc10,719$1.80M0.00%−99−0.9%Reduced
Investment Management Corp of Ontario10,929$1.83M0.02%+3,455+46.2%Added
Ameritas Investment Partners, Inc.11,061$1.85M0.06%−59−0.5%Reduced
D.A. Davidson & Co.11,105$1.86M0.01%−25−0.2%Reduced
Bleakley Financial Group, LLC11,107$1.86M0.03%+922+9.1%Added
Agp Franklin, LLC11,322$1.90M0.89%−182−1.6%Reduced
Lido Advisors, LLC11,137$1.90M0.01%+212+1.9%Added
Nicholson Wealth Management Group, LLC11,487$1.93M1.13%−333−2.8%Reduced
Ronald Blue Trust, Inc.11,509$1.93M0.02%+156+1.4%Added
BFSG, LLC11,621$1.95M0.19%−360−3.0%Reduced
Vestmark Advisory Solutions, Inc.11,726$1.97M0.03%+9,671+470.6%Added
Sequoia Financial Advisors, LLC11,987$2.01M0.01%+1,440+13.7%Added
Mitsubishi UFJ Asset Management (UK) Ltd.12,000$2.01M0.98%+2,000+20.0%Added
Allstate Corp12,096$2.03M0.03%+6,468+114.9%Added
Private Advisor Group, LLC12,149$2.04M0.01%+155+1.3%Added
Mizuho Securities USA LLC11,688$2.06M0.03%−40.0%Reduced
Albert D Mason Inc12,325$2.07M1.36%+8+0.1%Added
DC Investments Management, LLC12,438$2.08M0.92%00.0%Unchanged
StoneX Group Inc.12,536$2.11M0.09%+9,820+361.6%Added
CWM, LLC12,652$2.12M0.01%+579+4.8%Added
Walleye Capital LLC12,716$2.13M0.01%+12,716New
Town & Country Bank & Trust CO dba First Bankers Trust CO12,741$2.14M0.72%−136−1.1%Reduced
LRT Capital Management, LLC13,197$2.21M1.90%+13,197New
Credit Agricole S A13,200$2.21M0.01%+510+4.0%Added
First National Bank of Omaha13,210$2.21M0.07%−1,129−7.9%Reduced
Trustmark National Bank Trust Department13,278$2.23M0.14%+103+0.8%Added
Vident Advisory, LLC13,344$2.24M0.02%+457+3.5%Added
Danske Bank A/S13,405$2.25M0.01%−324,887−96.0%Reduced
Advisors Asset Management, Inc.13,513$2.27M0.04%+1,645+13.9%Added
Whittier Trust Co13,660$2.29M0.02%−118−0.9%Reduced
Cordatus Wealth Management LLC13,654$2.29M0.53%+16+0.1%Added
J. Safra Sarasin Holding AG13,792$2.31M0.04%+13,792New
Dean Capital Management13,873$2.33M0.99%+434+3.2%Added
Apollon Wealth Management, LLC13,910$2.33M0.04%−717−4.9%Reduced
RD Lewis Holdings, Inc.13,839$2.34M1.99%+385+2.9%Added
Trust Co of Vermont14,145$2.37M0.10%−124−0.9%Reduced
Gateway Investment Advisers LLC14,255$2.39M0.02%+516+3.8%Added
Johnson Investment Counsel Inc14,293$2.40M0.02%+30.0%Added
Generali Asset Management SPA SGR14,417$2.42M0.05%−8,535−37.2%Reduced
First National Advisers, LLC14,432$2.42M0.33%−735−4.8%Reduced
Rockefeller Capital Management L.P.14,623$2.45M0.00%+5,312+57.1%Added
Phillips Financial Management, LLC15,166$2.54M0.16%00.0%Unchanged
Diversify Advisory Services, LLC15,007$2.56M0.08%+310+2.1%Added
Crossmark Global Holdings, Inc.15,613$2.62M0.04%+1,145+7.9%Added
Hancock Whitney Corp15,902$2.67M0.05%−381−2.3%Reduced
State of Alaska, Department of Revenue15,955$2.67M0.03%−1,590−9.1%Reduced
Allianz SE15,985$2.68M0.03%00.0%Unchanged
Kentucky Trust Co16,394$2.75M1.46%−110−0.7%Reduced
Reaves W H & Co Inc16,678$2.80M0.05%−88,508−84.1%Reduced
OP Asset Management Ltd16,945$2.84M0.03%00.0%Unchanged
Azzad Asset Management Inc17,068$2.86M0.28%−341−2.0%Reduced
Brinker Capital Investments, LLC17,423$2.92M0.02%+2,148+14.1%Added
Obermeyer Wood Investment Counsel, LLLP17,431$2.92M0.13%−218−1.2%Reduced
XTX Topco Ltd17,434$2.92M0.08%+12,109+227.4%Added
Tudor Investment Corp Et Al17,439$2.92M0.02%−10,464−37.5%Reduced
E Fund Management (Hong Kong) Co., Ltd.30,967$2.94M1.23%+30,967New
Rafferty Asset Management, LLC17,676$2.96M0.01%+771+4.6%Added
Prospera Financial Services Inc17,933$3.01M0.05%−489−2.7%Reduced
UniSuper Management Pty Ltd18,068$3.03M0.02%−1,370−7.0%Reduced
Oregon Public Employees Retirement Fund18,365$3.08M0.04%+33+0.2%Added
Orion Investment Co18,658$3.13M0.96%+991+5.6%Added
Elo Mutual Pension Insurance Co18,834$3.16M0.05%+334+1.8%Added