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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, Q2 2025

Institutional positions in Atmos Energy Corp as of Jun 30, 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
871
+22 vs. Q1 2025
Shares held
160.5M
+2.59M (+1.6%) vs. Q1 2025
Total value
$24.7B
+$317.9M (+1.3%) vs. Q1 2025
New holders
96
372 more added
Sold out
74
270 more reduced

12 institutions that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 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 holdersQ2 2025: 871 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 heldQ2 2025: $24.7B
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, Q2 2025

Shares, value and share of portfolio for each institution holding Atmos Energy Corp; share changes are against Q1 2025.

Institutions holding ATO in Q2 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Alliancebernstein L.P.171,617$26.4M0.01%−2,032−1.2%Reduced
CIBC World Markets Corp169,987$26.2M0.17%+150,991+794.9%Added
Hennessy Advisors Inc164,286$25.3M0.84%+3,500+2.2%Added
Janney Montgomery Scott LLC160,703$24.8M0.06%−6,930−4.1%Reduced
KLP Kapitalforvaltning AS159,959$24.7M0.11%+7,000+4.6%Added
Allspring Global Investments Holdings, LLC160,359$24.6M0.04%−179−0.1%Reduced
Cramer Rosenthal McGlynn LLC154,588$23.8M1.64%−7,296−4.5%Reduced
Maryland State Retirement & Pension System150,832$23.2M0.51%+8,983+6.3%Added
Ameriprise Financial Inc147,109$22.5M0.01%+20,914+16.6%Added
LPL Financial LLC142,451$22.0M0.01%+32,679+29.8%Added
State Board of Administration of Florida Retirement System139,287$21.5M0.04%+890+0.6%Added
Asset Management One Co.,Ltd.138,602$21.4M0.07%−3,609−2.5%Reduced
APG Asset Management N.V.160,339$21.1M0.06%+85,894+115.4%Added
CIBC Asset Management Inc135,444$20.9M0.07%+20,193+17.5%Added
Natixis Advisors, L.P.132,593$20.4M0.03%+16,825+14.5%Added
Ensign Peak Advisors, Inc120,618$18.6M0.03%+36,670+43.7%Added
STRS Ohio119,783$18.5M0.07%+21,783+22.2%Added
New York State Teachers Retirement System119,363$18.4M0.04%−1,777−1.5%Reduced
Aviva PLC118,670$18.3M0.04%+9,180+8.4%Added
Magellan Asset Management Ltd116,259$17.9M0.20%−629−0.5%Reduced
Baird Financial Group, Inc.113,937$17.6M0.03%+3,082+2.8%Added
Toronto Dominion Bank113,347$17.5M0.04%+33,034+41.1%Added
Connor, Clark & Lunn Investment Management Ltd.112,481$17.3M0.06%+100,100+808.5%Added
Assetmark, Inc107,202$16.5M0.04%+23,326+27.8%Added
Man Group plc107,124$16.5M0.04%+27,935+35.3%Added
AMF Pensionsforsakring AB102,632$15.8M0.11%+102,632New
Manufacturers Life Insurance Company, The102,442$15.8M0.01%−2,237−2.1%Reduced
Public Employees Retirement System of Ohio99,235$15.3M0.05%−2,010−2.0%Reduced
Macquarie Group Ltd98,855$15.2M0.02%+1,993+2.1%Added
Gabelli Funds LLC95,300$14.7M0.10%−200−0.2%Reduced
Prudential Financial Inc92,470$14.3M0.02%+6,775+7.9%Added
Millennium Management LLC91,544$14.1M0.01%+81,920+851.2%Added
Mather Group, LLC.90,523$14.0M0.15%−4,699−4.9%Reduced
Skandinaviska Enskilda Banken AB (publ)88,641$13.7M0.06%−457−0.5%Reduced
State of Wisconsin Investment Board86,585$13.3M0.03%−424−0.5%Reduced
Russell Investments Group, Ltd.83,577$12.9M0.02%+4,174+5.3%Added
Susquehanna Fundamental Investments, LLC83,429$12.9M0.35%−5,789−6.5%Reduced
FMR LLC75,134$11.6M0.00%+6,167+8.9%Added
Storebrand Asset Management AS75,096$11.6M0.03%+13,399+21.7%Added
Yousif Capital Management, LLC74,762$11.5M0.12%−5,128−6.4%Reduced
Treasurer of the State of North Carolina73,919$11.4M0.04%+3,078+4.3%Added
Mitsubishi UFJ Trust & Banking Corp73,486$11.3M0.03%−3,766−4.9%Reduced
Citadel Advisors LLC73,075$11.3M0.01%−285,866−79.6%Reduced
National Bank of Canada72,056$11.1M0.01%+709+1.0%Added
Qube Research & Technologies Ltd71,588$11.0M0.02%+71,588New
State of Tennessee, Treasury Department70,925$10.9M0.04%+21,573+43.7%Added
BNP PARIBAS ASSET MANAGEMENT Holding S.A.70,664$10.9M0.03%−9,372−11.7%Reduced
Resona Asset Management Co.,Ltd.69,316$10.7M0.05%+5,535+8.7%Added
M&T Bank Corp67,206$10.4M0.04%−5,278−7.3%Reduced
Two Sigma Investments, LP66,305$10.2M0.02%−10,494−13.7%Reduced
Cerity Partners LLC64,555$9.95M0.02%+10,093+18.5%Added
HighTower Advisors, LLC64,368$9.92M0.01%−5,643−8.1%Reduced
Forsta Ap-Fonden63,300$9.76M0.06%+23,800+60.3%Added
Teachers Retirement System of the State of Kentucky62,366$9.61M0.08%+2,394+4.0%Added
Sienna Gestion68,217$9.60M0.66%+5,618+9.0%Added
Abn Amro Investment Solutions61,980$9.55M0.19%−6,124−9.0%Reduced
Mattern Capital Management, LLC61,590$9.49M1.14%+99+0.2%Added
Cresset Asset Management, LLC60,127$9.27M0.05%−6,766−10.1%Reduced
Mn Services Vermogensbeheer B.V.59,400$9.15M0.06%+4,800+8.8%Added
Worldquant Millennium Advisors LLC58,588$9.03M0.04%+1,099+1.9%Added
AXA S.A.57,944$8.93M0.03%+3,352+6.1%Added
Avantax Advisory Services, Inc.57,832$8.91M0.05%+405+0.7%Added
Quantinno Capital Management LP57,542$8.87M0.04%+16,766+41.1%Added
Arvest Bank Trust Division57,532$8.87M0.52%+57,532New
Van Eck Associates Corp55,601$8.57M0.01%+5,379+10.7%Added
Eastern Bank55,250$8.51M0.16%−728−1.3%Reduced
Caisse de Depot Et Placement du Quebec54,956$8.47M0.02%+53,469+3,595.8%Added
Cambiar Investors LLC54,511$8.40M0.35%−21,487−28.3%Reduced
Robeco Institutional Asset Management B.V.54,049$8.33M0.01%+6,853+14.5%Added
Daiwa Securities Group Inc.53,868$8.30M0.03%+450+0.8%Added
Miller Howard Investments Inc53,505$8.25M0.26%+1,800+3.5%Added
Voya Investment Management LLC53,489$8.24M0.01%−1,497−2.7%Reduced
State of Michigan Retirement System50,810$7.83M0.04%−1,800−3.4%Reduced
Fisher Funds Management LTD49,500$7.63M0.18%−5,499−10.0%Reduced
Kennedy Capital Management, Inc.48,538$7.48M0.18%−1,342−2.7%Reduced
CI Private Wealth, LLC48,338$7.45M0.01%−2,450−4.8%Reduced
Dai-Ichi Life Insurance Company, Ltd47,479$7.32M0.21%+4,839+11.3%Added
DekaBank Deutsche Girozentrale47,563$7.26M0.01%+369+0.8%Added
Lansforsakringar Fondforvaltning AB (publ)46,757$7.21M0.04%−2,253−4.6%Reduced
Arizona State Retirement System46,393$7.15M0.04%+1,447+3.2%Added
IFM Investors Pty Ltd45,598$7.03M0.07%+3,761+9.0%Added
Mariner, LLC44,516$6.86M0.01%+773+1.8%Added
Diversify Wealth Management, LLC40,564$6.72M0.42%+4,743+13.2%Added
Illinois Municipal Retirement Fund43,323$6.68M0.09%+12,422+40.2%Added
Nisa Investment Advisors, LLC43,312$6.67M0.03%+118+0.3%Added
BCM Advisors, LLC41,319$6.45M1.37%00.0%Unchanged
Gallo Partners, LP40,864$6.30M4.12%+40,864New
Swedbank AB40,786$6.29M0.01%+40,786New
Umb Bank N A40,246$6.20M0.10%+2,483+6.6%Added
DnB Asset Management AS40,196$6.19M0.03%−30,880−43.4%Reduced
Creative Planning39,820$6.14M0.01%+833+2.1%Added
Franklin Resources Inc39,167$6.04M0.00%+458+1.2%Added
Summit Global Investments39,107$6.03M0.36%+39,107New
Czech National Bank38,825$5.98M0.05%+2,368+6.5%Added
Mutual of America Capital Management LLC38,229$5.89M0.06%−1,516−3.8%Reduced
Stratos Wealth Partners, LTD.38,131$5.88M0.08%+5,133+15.6%Added
State of New Jersey Common Pension Fund D38,038$5.86M0.02%00.0%Unchanged
Comerica Bank37,929$5.85M0.02%−2,993−7.3%Reduced
Susquehanna International Group, LLP36,671$5.65M0.01%+9,739+36.2%Added
Jones Financial Companies LLLP35,663$5.44M0.00%+2,331+7.0%Added