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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
Miller Howard Investments Inc53,505$8.25M0.26%+1,800+3.5%Added
Daiwa Securities Group Inc.53,868$8.30M0.03%+450+0.8%Added
Robeco Institutional Asset Management B.V.54,049$8.33M0.01%+6,853+14.5%Added
Cambiar Investors LLC54,511$8.40M0.35%−21,487−28.3%Reduced
Caisse de Depot Et Placement du Quebec54,956$8.47M0.02%+53,469+3,595.8%Added
Eastern Bank55,250$8.51M0.16%−728−1.3%Reduced
Van Eck Associates Corp55,601$8.57M0.01%+5,379+10.7%Added
Arvest Bank Trust Division57,532$8.87M0.52%+57,532New
Quantinno Capital Management LP57,542$8.87M0.04%+16,766+41.1%Added
Avantax Advisory Services, Inc.57,832$8.91M0.05%+405+0.7%Added
AXA S.A.57,944$8.93M0.03%+3,352+6.1%Added
Worldquant Millennium Advisors LLC58,588$9.03M0.04%+1,099+1.9%Added
Mn Services Vermogensbeheer B.V.59,400$9.15M0.06%+4,800+8.8%Added
Cresset Asset Management, LLC60,127$9.27M0.05%−6,766−10.1%Reduced
Mattern Capital Management, LLC61,590$9.49M1.14%+99+0.2%Added
Abn Amro Investment Solutions61,980$9.55M0.19%−6,124−9.0%Reduced
Sienna Gestion68,217$9.60M0.66%+5,618+9.0%Added
Teachers Retirement System of the State of Kentucky62,366$9.61M0.08%+2,394+4.0%Added
Forsta Ap-Fonden63,300$9.76M0.06%+23,800+60.3%Added
HighTower Advisors, LLC64,368$9.92M0.01%−5,643−8.1%Reduced
Cerity Partners LLC64,555$9.95M0.02%+10,093+18.5%Added
Two Sigma Investments, LP66,305$10.2M0.02%−10,494−13.7%Reduced
M&T Bank Corp67,206$10.4M0.04%−5,278−7.3%Reduced
Resona Asset Management Co.,Ltd.69,316$10.7M0.05%+5,535+8.7%Added
BNP PARIBAS ASSET MANAGEMENT Holding S.A.70,664$10.9M0.03%−9,372−11.7%Reduced
State of Tennessee, Treasury Department70,925$10.9M0.04%+21,573+43.7%Added
Qube Research & Technologies Ltd71,588$11.0M0.02%+71,588New
National Bank of Canada72,056$11.1M0.01%+709+1.0%Added
Citadel Advisors LLC73,075$11.3M0.01%−285,866−79.6%Reduced
Mitsubishi UFJ Trust & Banking Corp73,486$11.3M0.03%−3,766−4.9%Reduced
Treasurer of the State of North Carolina73,919$11.4M0.04%+3,078+4.3%Added
Yousif Capital Management, LLC74,762$11.5M0.12%−5,128−6.4%Reduced
Storebrand Asset Management AS75,096$11.6M0.03%+13,399+21.7%Added
FMR LLC75,134$11.6M0.00%+6,167+8.9%Added
Susquehanna Fundamental Investments, LLC83,429$12.9M0.35%−5,789−6.5%Reduced
Russell Investments Group, Ltd.83,577$12.9M0.02%+4,174+5.3%Added
State of Wisconsin Investment Board86,585$13.3M0.03%−424−0.5%Reduced
Skandinaviska Enskilda Banken AB (publ)88,641$13.7M0.06%−457−0.5%Reduced
Mather Group, LLC.90,523$14.0M0.15%−4,699−4.9%Reduced
Millennium Management LLC91,544$14.1M0.01%+81,920+851.2%Added
Prudential Financial Inc92,470$14.3M0.02%+6,775+7.9%Added
Gabelli Funds LLC95,300$14.7M0.10%−200−0.2%Reduced
Macquarie Group Ltd98,855$15.2M0.02%+1,993+2.1%Added
Public Employees Retirement System of Ohio99,235$15.3M0.05%−2,010−2.0%Reduced
Manufacturers Life Insurance Company, The102,442$15.8M0.01%−2,237−2.1%Reduced
AMF Pensionsforsakring AB102,632$15.8M0.11%+102,632New
Man Group plc107,124$16.5M0.04%+27,935+35.3%Added
Assetmark, Inc107,202$16.5M0.04%+23,326+27.8%Added
Connor, Clark & Lunn Investment Management Ltd.112,481$17.3M0.06%+100,100+808.5%Added
Toronto Dominion Bank113,347$17.5M0.04%+33,034+41.1%Added
Baird Financial Group, Inc.113,937$17.6M0.03%+3,082+2.8%Added
Magellan Asset Management Ltd116,259$17.9M0.20%−629−0.5%Reduced
Aviva PLC118,670$18.3M0.04%+9,180+8.4%Added
New York State Teachers Retirement System119,363$18.4M0.04%−1,777−1.5%Reduced
STRS Ohio119,783$18.5M0.07%+21,783+22.2%Added
Ensign Peak Advisors, Inc120,618$18.6M0.03%+36,670+43.7%Added
Natixis Advisors, L.P.132,593$20.4M0.03%+16,825+14.5%Added
CIBC Asset Management Inc135,444$20.9M0.07%+20,193+17.5%Added
APG Asset Management N.V.160,339$21.1M0.06%+85,894+115.4%Added
Asset Management One Co.,Ltd.138,602$21.4M0.07%−3,609−2.5%Reduced
State Board of Administration of Florida Retirement System139,287$21.5M0.04%+890+0.6%Added
LPL Financial LLC142,451$22.0M0.01%+32,679+29.8%Added
Ameriprise Financial Inc147,109$22.5M0.01%+20,914+16.6%Added
Maryland State Retirement & Pension System150,832$23.2M0.51%+8,983+6.3%Added
Cramer Rosenthal McGlynn LLC154,588$23.8M1.64%−7,296−4.5%Reduced
Allspring Global Investments Holdings, LLC160,359$24.6M0.04%−179−0.1%Reduced
KLP Kapitalforvaltning AS159,959$24.7M0.11%+7,000+4.6%Added
Janney Montgomery Scott LLC160,703$24.8M0.06%−6,930−4.1%Reduced
Hennessy Advisors Inc164,286$25.3M0.84%+3,500+2.2%Added
CIBC World Markets Corp169,987$26.2M0.17%+150,991+794.9%Added
Alliancebernstein L.P.171,617$26.4M0.01%−2,032−1.2%Reduced
Victory Capital Management Inc173,649$26.8M0.02%+28,246+19.4%Added
Canada Pension Plan Investment Board178,244$27.5M0.02%+79,734+80.9%Added
Korea Investment CORP182,004$28.0M0.06%+53,194+41.3%Added
Standard Life Aberdeen plc186,479$28.7M0.05%+10,317+5.9%Added
California State Teachers Retirement System189,838$29.3M0.03%−284,542−60.0%Reduced
Exchange Traded Concepts, LLC190,373$29.3M0.37%−11,686−5.8%Reduced
M&G Plc190,764$29.4M0.16%+10,718+6.0%Added
Marshall Wace, LLP192,286$29.6M0.04%+3,684+2.0%Added
Bank of Montreal195,793$30.2M0.02%−37,679−16.1%Reduced
Public Employees Retirement Association of Colorado204,494$31.5M0.12%+875+0.4%Added
National Pension Service206,945$31.9M0.03%+1,659+0.8%Added
Great West Life Assurance Co208,163$32.1M0.05%+5,476+2.7%Added
Dearborn Partners LLC215,094$33.1M1.57%+1,363+0.6%Added
Universal- Beteiligungs- und Servicegesellschaft mbH215,202$33.2M0.06%+12,521+6.2%Added
Lazard Asset Management LLC215,793$33.3M0.05%+80,608+59.6%Added
Schroder Investment Management Group218,893$33.7M0.03%+10,842+5.2%Added
Royal London Asset Management Ltd242,611$37.4M0.09%−2,745−1.1%Reduced
TD Asset Management Inc250,515$38.6M0.03%−198,084−44.2%Reduced
Stifel Financial Corp259,166$39.9M0.04%+4,075+1.6%Added
Capital International Inc267,741$41.3M0.40%−12,930−4.6%Reduced
Aventail Capital Group, LP272,113$41.9M1.86%+28,793+11.8%Added
MEAG MUNICH ERGO, Kapitalanlagegesellschaft mbH275,000$42.4M1.20%−75,318−21.5%Reduced
Adage Capital Partners GP, L.L.C.285,504$44.0M0.07%−96,900−25.3%Reduced
Nomura Asset Management Co Ltd287,969$44.4M0.12%−38,128−11.7%Reduced
Commonwealth of Pennsylvania Public School Empls Retrmt Sys311,517$48.0M0.25%+15,192+5.1%Added
KBC Group NV312,868$48.2M0.13%−15,317−4.7%Reduced
Reaves W H & Co Inc313,020$48.2M1.07%−345,115−52.4%Reduced
Danske Bank A/S315,292$48.6M0.12%+189,805+151.3%Added
Clark Capital Management Group, Inc.317,860$49.0M0.34%+12,091+4.0%Added