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ATO · Atmos Energy Corp

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$179.38 +1.16 (+0.65%) At close · Jul 28
Market Cap
$29.75B
Shares
166.92M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

The Jun 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out.
Holders: 1,020
Total Value: $27,924,283,256
Total Shares: 151,605,737
Showing 1–100 of 1,030 holdings by value · page 1 of 11

Institutional Ownership Trend

26 quarters

Superinvestors Holding ATO

All superinvestors →
Joel Greenblatt $12,564,100

Holder Concentration

Across 1,015 13F filers
Top Holder
11.6%
Jun 2023 → Mar 2026 · range 11.6% – 14.6%
of institutional value
Top 5
37.5%
Jun 2023 → Mar 2026 · range 37.5% – 50.3%
of institutional value
Top 10
51.0%
Jun 2023 → Mar 2026 · range 51.0% – 59.6%
of institutional value
HHI
374
Jun 2023 → Mar 2026 · range 374 – 603
Broadly held
Showing 100 of 1,030
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Mega BlackRock, Inc. $3,223,726,595 11.54% 17,451,963
Mega STATE STREET CORP $2,100,774,380 7.52% 11,372,750
Mega VANGUARD CAPITAL MANAGEMENT LLC $1,983,070,241 7.10% 10,735,547
Mega WELLINGTON MANAGEMENT GROUP LLP $1,782,819,903 6.38% 9,651,472
Mega Capital International Investors $1,353,402,432 4.85% 7,326,778
Large Aristotle Capital Management, LLC $898,936,370 3.22% 4,866,481
Mega GEODE CAPITAL MANAGEMENT, LLC $801,129,901 2.87% 4,336,996
Mega BANK OF AMERICA CORP /DE/ Bank $775,719,261 2.78% 4,199,433
Mega Capital Research Global Investors $740,828,796 2.65% 4,010,550
Mega Invesco Ltd. $555,509,558 1.99% 3,007,306
Mega MORGAN STANLEY $554,379,070 1.99% 3,001,186
Mega PRICE T ROWE ASSOCIATES INC /MD/ $501,534,564 1.80% 2,715,107
Mega DEUTSCHE BANK AG\ Bank $470,488,673 1.68% 2,547,037
Mega GOLDMAN SACHS GROUP INC $357,463,120 1.28% 1,935,162
Mega MASSACHUSETTS FINANCIAL SERVICES CO /MA/ $327,434,853 1.17% 1,772,601
Mega Legal & General Group Plc $298,577,711 1.07% 1,616,380
Mega NORTHERN TRUST CORP Bank $286,259,472 1.03% 1,549,694
Mega DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main Bank $275,353,421 0.99% 1,490,653
Mega WELLS FARGO & COMPANY/MN $245,553,466 0.88% 1,329,328
Mega Amundi $240,669,099 0.86% 1,302,886
Mega RAYMOND JAMES FINANCIAL INC $222,911,226 0.80% 1,206,752
Large Pictet Asset Management Holding SA $217,122,658 0.78% 1,175,415
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $196,482,595 0.70% 1,063,678
Small SFMG, LLC $195,534,432 0.70% 1,058,545
Mid Perpetual Ltd $195,237,553 0.70% 1,133,323
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $191,484,631 0.69% 1,036,621
Large ProShare Advisors LLC $189,127,788 0.68% 1,023,862
Mega AMERICAN CENTURY COMPANIES INC $185,174,041 0.66% 1,002,458
Mega Nuveen, LLC $175,023,676 0.63% 947,508
Mega VANGUARD FIDUCIARY TRUST CO Bank $171,908,190 0.62% 930,642
Mega Bank of New York Mellon Corp Bank $164,898,799 0.59% 892,696
Large GQG Partners LLC $163,884,322 0.59% 887,204
Mega PNC FINANCIAL SERVICES GROUP, INC. $163,715,669 0.59% 886,291
Mega BNP PARIBAS ARBITRAGE, SA $154,189,108 0.55% 834,718
Mega AQR CAPITAL MANAGEMENT LLC $151,983,178 0.54% 822,776
Large COHEN & STEERS, INC. $147,821,441 0.53% 800,246
Mega JPMORGAN CHASE & CO $147,079,042 0.53% 796,227
Mega HSBC HOLDINGS PLC $144,115,586 0.52% 780,184
Mid CBRE INVESTMENT MANAGEMENT LISTED REAL ASSETS LLC $140,009,078 0.50% 757,953
Mega DIMENSIONAL FUND ADVISORS LP $139,091,572 0.50% 752,986
Mega CITADEL ADVISORS LLC $138,836,290 0.50% 751,604
Mega UBS Group AG $132,755,861 0.48% 718,687
Large SILVERCREST ASSET MANAGEMENT GROUP LLC $130,638,602 0.47% 707,225
Mega ENVESTNET ASSET MANAGEMENT INC $124,605,831 0.45% 674,566
Large PFA Pension, Forsikringsaktieselskab Pension $123,400,348 0.44% 668,040
Mid DUFF & PHELPS INVESTMENT MANAGEMENT CO $112,299,600 0.40% 607,945
Mega NEUBERGER BERMAN GROUP LLC $111,033,344 0.40% 601,090
Large Chevy Chase Trust Holdings, LLC $95,816,664 0.34% 518,713
Large SEI INVESTMENTS CO $94,729,033 0.34% 512,825
Mega PRINCIPAL FINANCIAL GROUP INC $93,727,666 0.34% 507,404
Mega ROYAL BANK OF CANADA Bank $93,087,239 0.33% 503,937
Mega Swiss National Bank Bank $87,686,584 0.31% 474,700
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Pension $87,511,654 0.31% 473,753
Large HUNTINGTON NATIONAL BANK Bank $86,445,634 0.31% 467,982
Mid Nilsine Partners, LLC $83,597,118 0.30% 485,268
Large Clark Capital Management Group, Inc. $79,887,151 0.29% 432,477
Large EARNEST PARTNERS LLC $78,101,463 0.28% 422,810
Mega Mitsubishi UFJ Asset Management Co., Ltd. $73,365,611 0.26% 397,172
Mega Sumitomo Mitsui Trust Group, Inc. $72,906,952 0.26% 394,689
Large AVIVA PLC $70,877,433 0.25% 383,702
Mega BARCLAYS PLC $68,963,732 0.25% 373,342
Mid Energy Income Partners, LLC $67,110,807 0.24% 363,311
Mega Vanguard Global Advisers, LLC $66,655,103 0.24% 360,844
Mega T. Rowe Price Investment Management, Inc. $66,250,197 0.24% 358,652
Mega RHUMBLINE ADVISERS $65,383,491 0.23% 353,960
Mega JENNISON ASSOCIATES LLC $63,929,744 0.23% 346,090
Mid Ascentis Wealth Management, LLC $63,831,346 0.23% 370,531
Mega FIRST TRUST ADVISORS LP $62,880,165 0.23% 340,408
Large BAHL & GAYNOR INC $62,019,740 0.22% 335,750
Large Capital International, Inc./CA/ $60,147,233 0.22% 325,613
Mega MANUFACTURERS LIFE INSURANCE COMPANY, THE Insurance $59,742,696 0.21% 323,423
Mid BENJAMIN EDWARDS INC $58,765,603 0.21% 341,125
Large KBC Group NV $58,431,923 0.21% 316,327
Large TORONTO DOMINION BANK Bank $57,163,635 0.20% 309,461
Mega VANGUARD ASSET MANAGEMENT, Ltd $56,102,234 0.20% 303,715
Large NEW YORK STATE COMMON RETIREMENT FUND Pension $54,576,817 0.20% 295,457
Mega California Public Employees Retirement System Pension $53,724,518 0.19% 290,843
Large NOMURA ASSET MANAGEMENT CO LTD $53,491,217 0.19% 289,580
Large COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS $49,749,681 0.18% 288,789
Large Boston Trust Walden Corp $48,484,874 0.17% 281,447
Mega MILLENNIUM MANAGEMENT LLC $48,289,687 0.17% 261,421
Mega SCHRODER INVESTMENT MANAGEMENT GROUP $47,885,149 0.17% 259,231
Large Curated Wealth Partners LLC $47,786,319 0.17% 277,392
Large ROYAL LONDON ASSET MANAGEMENT LTD $47,110,065 0.17% 255,035
Mid Aventail Capital Group, LP $45,780,635 0.16% 247,838
Mid Vest Financial, LLC $45,728,726 0.16% 265,448
Mega National Pension Service Pension $45,198,582 0.16% 244,687
Mega CITIGROUP INC $44,648,116 0.16% 241,707
Mid Partners Group Holding AG $44,001,412 0.16% 238,206
Mid Munich Reinsurance Co Stock Corp in Munich Insurance $43,370,867 0.16% 251,761
Large STIFEL FINANCIAL CORP $43,039,388 0.15% 232,998
Large Aberdeen Group plc $42,156,244 0.15% 228,217
Mega Clearbridge Investments, LLC $40,983,641 0.15% 221,869
Large M&G PLC $37,205,932 0.13% 201,418
Large EXCHANGE TRADED CONCEPTS, LLC $36,235,614 0.13% 210,342
Mega LPL Financial LLC $35,886,847 0.13% 194,277
Large Eurizon Capital SGR S.p.A. $34,976,732 0.13% 189,350
Large Allspring Global Investments Holdings, LLC $34,959,367 0.13% 189,256
Mid DEARBORN PARTNERS LLC $34,777,049 0.12% 188,269
Large CANADA LIFE ASSURANCE Co Insurance $34,737,334 0.12% 188,054
Key facts CIK 731802 CUSIP 049560105 13F (30d) 312 filings 285 filers Visit website Investor relations

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