Ticker · CUSIP 049560105

ATO

ATMOS ENERGY CORP

Utilities·Utilities - Regulated Gas

···Share

Holders (tracked)

Combined shares

19,876,181

Combined value

$3.33B

Last close

$186.54

Quarter

2025Q4

Price is +11.3% vs the avg quarter-end implied price across tracked holders.

Price · 1Y$186.54+32.43 (+21.04%)H $192.29 · L $148.94 · Avg Vol 1.0M

Congress buy

Tracked holders · last 8 quarters

+3 vs previous quarter over the last 8.

SEC event timeline

22 events

Ken Griffin (Citadel Advisors) added2026-02-17
+381,226 shares · 2025Q4
Position
Two Sigma Investments trimmed2026-02-17
−43,960 shares · 2025Q4
Position
D.E. Shaw & Co. added2026-02-17
+63,204 shares · 2025Q4
Position
Izzy Englander (Millennium Mgmt) added2026-02-17
+6,559 shares · 2025Q4
Position
Wellington Management trimmed2026-02-17
−457,320 shares · 2025Q4
Position
Paul Tudor Jones (Tudor Investment) opened position2026-02-17
+17,439 shares · 2025Q4
Position
T. Rowe Price trimmed2026-02-17
−1,220,132 shares · 2025Q4
Position
AQR Capital Management added2026-02-17
+18,423 shares · 2025Q4
Position
Renaissance Technologies trimmed2026-02-12
−21,400 shares · 2025Q4
Position
Norges Bank (Norway SWF) opened position2026-02-10
+1,977,131 shares · 2025Q4
Position
Ken Fisher (Fisher Asset Mgmt) added2026-02-09
+1,281 shares · 2025Q4
Position
Paul Tudor Jones (Tudor Investment) exited2025-12-09
−4,932 shares · 2025Q3
Position
AQR Capital Management added2025-11-14
+41,440 shares · 2025Q3
Position
Izzy Englander (Millennium Mgmt) trimmed2025-11-14
−31,118 shares · 2025Q3
Position
T. Rowe Price added2025-11-14
+73,421 shares · 2025Q3
Position
Wellington Management trimmed2025-11-14
−916,094 shares · 2025Q3
Position
Two Sigma Investments trimmed2025-11-14
−18,741 shares · 2025Q3
Position
D.E. Shaw & Co. trimmed2025-11-14
−22,487 shares · 2025Q3
Position
Renaissance Technologies added2025-11-13
+52,900 shares · 2025Q3
Position
Norges Bank (Norway SWF) exited2025-11-13
−1,833,019 shares · 2025Q3
Position
Norges Bank (Norway SWF) trimmed2025-11-12
−289,082 shares · 2024Q3
Position
Ken Fisher (Fisher Asset Mgmt) opened position2025-11-12
+6,753 shares · 2025Q3
Position

Insider activity

No insider transactions in the last 30 days.

View full insider history for ATO →

Follow-the-investor returns

If you'd copied each holder of ATO…

Cost basis inferred from each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.

Investor	First in	Cost basis	Return	Position value today
Wellington Management	2016Q1	$110.80	+68.4%	$1.87B
T. Rowe Price	2016Q1	$125.42	+48.7%	$1.23B
AQR Capital Management	2016Q1	$133.53	+39.7%	$94.5M
Two Sigma Investments	2017Q4	$137.50	+35.7%	$672K
Ken Fisher (Fisher Asset Mgmt)	2021Q4	$145.71	+28.0%	$1.5M
D.E. Shaw & Co.	2016Q1	$161.05	+15.8%	$13.7M
Izzy Englander (Millennium Mgmt)	2016Q1	$164.01	+13.7%	$12.5M
Renaissance Technologies	2016Q1	$164.35	+13.5%	$9.7M
Paul Tudor Jones (Tudor Investment)	2016Q4	$165.37	+12.8%	$317K
Paul Tudor Jones (Tudor Investment)	2016Q4	$165.37	+12.8%	$317K
Paul Tudor Jones (Tudor Investment)	2016Q4	$165.37	+12.8%	$317K
Ken Griffin (Citadel Advisors)	2016Q3	$167.72	+11.2%	$653K
Ken Griffin (Citadel Advisors)	2016Q3	$167.72	+11.2%	$653K
Ken Griffin (Citadel Advisors)	2016Q3	$167.72	+11.2%	$653K
Norges Bank (Norway SWF)	2016Q1	$640.87	-70.9%	$368.8M

Who moved on this name in 2025Q4

Position changes reported for the latest quarter, grouped by direction.

New positions2

Norges Bank (Norway SWF)
+1,977,131
$331.4M
Paul Tudor Jones (Tudor Investment)
+17,439
$2.9M

Added to5

Ken Griffin (Citadel Advisors)
+381,226
$63.9M
D.E. Shaw & Co.
+63,204
$10.6M
AQR Capital Management
+18,423
$3.1M
Izzy Englander (Millennium Mgmt)
+6,559
$1.1M
Ken Fisher (Fisher Asset Mgmt)
+1,281
$215K

Trimmed4

Wellington Management
−457,320
$76.7M
Two Sigma Investments
−43,960
$7.4M
Renaissance Technologies
−21,400
$3.6M
T. Rowe Price
−1,220,132
$205K

Exited0

—

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.

Quarter	Holders	Shares	Combined value	Δ holders
2022Q1	11	16,036,730	$15.58B	—
2022Q2	11	16,968,108	$5.43B	—
2022Q3	13	23,646,579	$2.41B	+2
2022Q4	16	23,762,272	$2.66B	+3
2023Q1	11	25,703,562	$2.89B	-5
2023Q2	12	28,855,590	$3.36B	+1
2023Q3	9	20,478,751	$2.17B	-3
2023Q4	9	16,856,608	$1.95B	—
2024Q1	12	27,213,864	$3.23B	+3
2024Q2	12	32,400,319	$3.78B	—
2024Q3	11	24,955,004	$3.46B	-1
2024Q4	12	11,451,150	$1.59B	+1
2025Q1	11	21,192,076	$3.28B	-1
2025Q2	15	21,796,859	$3.36B	+4
2025Q3	12	19,179,730	$3.27B	-3
2025Q4	15	19,876,181	$3.33B	+3

Congress members trading this stock

Date	Member	Type	Amount range	Filing
2025-12-02	Jared Moskowitz	Buy	$1K – $15K	PDF ↗

Who owns ATO

15 super-investors · 2025Q4

Tracked stake

19.88M

Combined value

$3.33B

% of shares outstanding

—

shares-out unknown

Quarter action mix

New4Added7Trim4

#	Manager	Shares	Value	% of book	Last action
1	Wellington Management	10.01M	$1.68B	0.3%	Trim−457.3K
2	T. Rowe Price	6.60M	$1.11B	0.1%	Trim−1.22M
3	Norges Bank Norway SWF	1.98M	$331M	0.0%	New+1.98M
4	Ken Griffin Citadel Advisors	531.8K	$89M	0.0%	Added+381.2K
5	AQR Capital Management	506.6K	$85M	0.0%	Added+18.4K
6	D.E. Shaw & Co.	73.3K	$12M	0.0%	Added+63.2K
7	Izzy Englander Millennium Mgmt	67.0K	$11M	0.0%	Added+6.6K
8	Renaissance Technologies	52.0K	$9M	0.0%	Trim−21.4K
9	Ken Griffin Citadel Advisors	24.9K	$4M	0.0%	Added+381.2K
10	Paul Tudor Jones Tudor Investment	17.4K	$3M	0.0%	New+17.4K
11	Ken Fisher Fisher Asset Mgmt	8.0K	$1M	0.0%	Added+1.3K
12	Two Sigma Investments	3.6K	$604K	0.0%	Trim−44.0K
13	Ken Griffin Citadel Advisors	3.5K	$587K	0.0%	Added+381.2K
14	Paul Tudor Jones Tudor Investment	1.7K	$285K	0.0%	New+17.4K
15	Paul Tudor Jones Tudor Investment	1.5K	$251K	0.0%	New+17.4K

Recent moves

20 transactions

ADDD.E. Shaw & Co.
+63,204 · 2025Q4
ADDIzzy Englander (Millennium Mgmt)
+6,559 · 2025Q4
TRIMT. Rowe Price
−1,220,132 · 2025Q4
ADDKen Griffin (Citadel Advisors)
+381,226 · 2025Q4
TRIMTwo Sigma Investments
−43,960 · 2025Q4
TRIMWellington Management
−457,320 · 2025Q4
ADDAQR Capital Management
+18,423 · 2025Q4
NEWPaul Tudor Jones (Tudor Investment)
+17,439 · 2025Q4
TRIMRenaissance Technologies
−21,400 · 2025Q4
NEWNorges Bank (Norway SWF)
+1,977,131 · 2025Q4
ADDKen Fisher (Fisher Asset Mgmt)
+1,281 · 2025Q4
SOLDPaul Tudor Jones (Tudor Investment)
−4,932 · 2025Q3
TRIMIzzy Englander (Millennium Mgmt)
−31,118 · 2025Q3
TRIMTwo Sigma Investments
−18,741 · 2025Q3
TRIMWellington Management
−916,094 · 2025Q3
ADDT. Rowe Price
+73,421 · 2025Q3
TRIMD.E. Shaw & Co.
−22,487 · 2025Q3
ADDAQR Capital Management
+41,440 · 2025Q3
ADDRenaissance Technologies
+52,900 · 2025Q3
SOLDNorges Bank (Norway SWF)
−1,833,019 · 2025Q3

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