13F Insight
DOSSIER · 13F Holders · Q1 2026Utilities · Natural Gas Distribution
ATO

ATMOS ENERGY CORP

1,051 institutions still hold ATMOS ENERGY CORP as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 049560105·Natural Gas Distribution·1,051 13F holders·last filed Mar 31, 2026
Market cap
—
13F value held
$19.2B
visible holders
Holders
1,051
filers reporting
Concentration
16.75%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q1 2026

Heavy net capital outflows hit Atmos Energy in Q2 2026 as market leader Perpetual Ltd trimmed over 107,000 shares worth $18.5 million. Boston Trust Walden also scaled back exposure (-13.4%, -$7.49M flow), while Assenagon Asset Management aggressively quadrupled its position (+$21.78M flow).

Top Institutional Trims

  • Perpetual Ltd: Reduced holding from 1,240,469 to 1,133,323 shares (-8.6%, -$18.46M flow), preserving a dominant $195.24M position.
  • Boston Trust Walden: Cut 43,480 shares (-13.4%, -$7.49M flow) to 281,447 shares ($48.48M).
  • Eastern Bank: Reduced stake by 14,698 shares (-23.1%, -$2.53M flow).

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$3.2B17.5M0.06%Q1 202602
STATE STREET CORP
CIK 0000093751
$2.1B11.4M0.07%Q1 202603
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$2.0B10.7M0.05%Q1 202604
WELLINGTON MANAGEMENT GROUP LLP
CIK 0000902219
$1.8B9.7M0.33%Q1 202605
Vanguard Portfolio Management
CIK 0002100121· Index
$1.7B9.3M0.09%Q1 202606
Capital International Investors
CIK 0001562230
$1.4B7.3M0.32%Q1 202607
Aristotle Capital Management, LLC
CIK 0000860644
$899M4.9M1.88%Q1 202608
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$798M4.3M0.05%Q1 202609
BANK OF AMERICA CORP /DE/
CIK 0000070858
$776M4.2M0.06%Q1 202610
Capital Research Global Investors
CIK 0001422848
$741M4.0M0.11%Q1 202611
Invesco Ltd.
CIK 0000914208
$556M3.0M0.05%Q1 202612
MORGAN STANLEY
CIK 0000895421
$554M3.0M0.03%Q1 202613
PRICE T ROWE ASSOCIATES INC /MD/
CIK 0000080255
$502M2.7M0.06%Q1 202614
DEUTSCHE BANK AG\
CIK 0000948046
$470M2.5M0.16%Q1 202615
GOLDMAN SACHS GROUP INC
CIK 0000886982
$357M1.9M0.04%Q1 202616
MASSACHUSETTS FINANCIAL SERVICES CO /MA/
CIK 0000912938
$331M1.8M0.11%Q1 202617
Legal & General Group Plc
CIK 0000764068
$299M1.6M0.07%Q1 202618
NORTHERN TRUST CORP
CIK 0000073124· Index
$286M1.5M0.04%Q1 202619
DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main
CIK 0001694217
$275M1.5M0.24%Q1 202620
WELLS FARGO & COMPANY/MN
CIK 0000072971
$246M1.3M0.05%Q1 2026
Page 1 of 53
1031 more holders available. Log in →
Insiders at ATMOS ENERGY CORP
Garza Rafael G →Geiser Edward →Akers John K →Faulk Michelle →Forsythe Christopher T →Hartsfield Karen E →Sampson Richard A →Bateman Jessica Walker →