Atmos Energy Corp (ATO) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

162,954,368Shares Outstanding

946,271Shares held by institutions

$170,555,885Value of institutional holdings

91.87%Institutional ownership %

2.96%Shares Changed QoQ

929No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

According to SEC filings for the period ending December 2025, Atmos Energy Corp (NYSE:ATO) is held by 929 institutional firms.

The collective stake of institutional investors in Atmos Energy moved to 91.9% in December 2025, a shift down from the 99.3% reported for September 2025.
Quarterly data indicates a 2.96% shift in institutional share volume, and the annual owner count reflects an increase of 15.40%.
A review of institutional activity for Atmos Energy shows 479 of 929 filers increasing their positions, while 291 reduced their stake, and 159 remained unchanged.
Collectively, institutional investors increased their stake in Atmos Energy to 149.71Mn shares as of December 2025, a change that is up by 4.30Mn shares quarter on quarter and down 6.04Mn shares year over year.
VANGUARD GROUP INC continues to be the largest institutional holder of Atmos Energy as of December 31, 2025, with a position of 21.03Mn shares, representing 12.91% of the company's outstanding stock.
Among the most significant buyers of Atmos Energy during December 2025 were BlackRock, Inc. (2.46Mn), NORGES BANK (1.98Mn), Capital International Investors (927.99K), PFA Pension, Forsikringsaktieselskab (639.04K), CITADEL ADVISORS LLC (381.23K).
Leading sellers of Atmos Energy stock in December 2025 included Aristotle Capital Management, LLC (864.60K), WELLINGTON MANAGEMENT GROUP LLP (457.32K), Squarepoint Ops LLC (392.35K), COOKE & BIELER LP (296.97K), UBS Group AG (282.01K).
The top 10 institutional holders of Atmos Energy for the quarter ending December 2025 included VANGUARD GROUP INC (21.03Mn), BlackRock, Inc. (17.02Mn), Capital International Investors (11.89Mn), STATE STREET CORP (10.79Mn), WELLINGTON MANAGEMENT GROUP LLP (10.01Mn), Aristotle Capital Management, LLC (6.37Mn), GEODE CAPITAL MANAGEMENT, LLC (4.21Mn), BANK OF AMERICA CORP /DE/ (3.78Mn), DEUTSCHE BANK AG\ (2.89Mn), MORGAN STANLEY (2.76Mn).

929 Institutional Holders

946,271 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
VANGUARD GROUP INC	31 Dec, 2025	21,032,554	276,485	1.33%	$3,525,687,026.00
BlackRock, Inc.	31 Dec, 2025	17,023,479	2,462,570	16.91%	$2,853,645,863.00
Capital International Investors	31 Dec, 2025	11,893,826	927,986	8.46%	$1,993,968,145.00
STATE STREET CORP	31 Dec, 2025	10,786,358	155,836	1.47%	$1,808,117,192.00
WELLINGTON MANAGEMENT GROUP LLP	31 Dec, 2025	10,010,508	-457,320	-4.37%	$1,678,061,457.00
Aristotle Capital Management, LLC	31 Dec, 2025	6,370,129	-864,600	-11.95%	$1,067,836,362.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	4,214,985	78,438	1.90%	$703,823,595.00
BANK OF AMERICA CORP /DE/	31 Dec, 2025	3,782,500	45,447	1.22%	$634,060,468.00
DEUTSCHE BANK AG\	31 Dec, 2025	2,887,367	47,860	1.69%	$484,009,330.00
MORGAN STANLEY	31 Dec, 2025	2,755,913	-152,181	-5.23%	$461,974,033.00
NORGES BANK	31 Dec, 2025	1,977,131	1,977,131	0.00%	$331,426,470.00
MASSACHUSETTS FINANCIAL SERVICES CO /MA/	31 Dec, 2025	1,975,460	25,963	1.33%	$331,146,361.00
Legal & General Group Plc	31 Dec, 2025	1,580,574	1,686	0.11%	$264,951,617.00
NORTHERN TRUST CORP	31 Dec, 2025	1,511,339	-8,166	-0.54%	$253,345,756.00
Perpetual Ltd	31 Dec, 2025	1,398,334	-85,031	-5.73%	$234,402,728.00
WELLS FARGO & COMPANY/MN	31 Dec, 2025	1,349,049	73,600	5.77%	$226,141,162.00
DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main	31 Dec, 2025	1,267,928	27,145	2.19%	$212,542,771.00
GOLDMAN SACHS GROUP INC	31 Dec, 2025	1,246,422	-64,423	-4.91%	$208,937,646.00
SFMG, LLC	31 Dec, 2025	1,060,389	18,247	1.75%	$177,753,063.00
Pictet Asset Management Holding SA	31 Dec, 2025	1,059,841	-29,357	-2.70%	$177,666,753.00

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