Ticker · CUSIP 03676B102

AM

ANTERO MIDSTREAM CORP

Energy·Oil & Gas Midstream

···Share

Holders (tracked)

Combined shares

7,365,509

Combined value

$131.03M

Last close

$21.29

Quarter

2025Q4

Price is +19.7% vs the avg quarter-end implied price across tracked holders.

Price · 1Y$21.29+4.97 (+30.43%)H $23.60 · L $15.67 · Avg Vol 2.6M

Tracked holders · last 8 quarters

+3 vs previous quarter over the last 8.

SEC event timeline

19 events

Wellington Management trimmed2026-02-17
−223,742 shares · 2025Q4
Position
Ken Griffin (Citadel Advisors) added2026-02-17
+17,962 shares · 2025Q4
Position
D.E. Shaw & Co. trimmed2026-02-17
−58,528 shares · 2025Q4
Position
AQR Capital Management trimmed2026-02-17
−3,184 shares · 2025Q4
Position
Izzy Englander (Millennium Mgmt) trimmed2026-02-17
−92,687 shares · 2025Q4
Position
Steve Cohen (Point72) added2026-02-17
+647,638 shares · 2025Q4
Position
T. Rowe Price added2026-02-17
+16,037 shares · 2025Q4
Position
Paul Tudor Jones (Tudor Investment) opened position2026-02-17
+300,756 shares · 2025Q4
Position
Ray Dalio (Bridgewater Associates) added2026-02-13
+4,676 shares · 2025Q4
Position
Norges Bank (Norway SWF) opened position2026-02-10
+3,766,025 shares · 2025Q4
Position
Paul Tudor Jones (Tudor Investment) exited2025-12-09
−774,009 shares · 2025Q3
Position
Steve Cohen (Point72) opened position2025-11-14
+551,287 shares · 2025Q3
Position
D.E. Shaw & Co. trimmed2025-11-14
−607,588 shares · 2025Q3
Position
Izzy Englander (Millennium Mgmt) trimmed2025-11-14
−1,623,453 shares · 2025Q3
Position
Wellington Management trimmed2025-11-14
−227,112 shares · 2025Q3
Position
AQR Capital Management added2025-11-14
+21,369 shares · 2025Q3
Position
T. Rowe Price added2025-11-14
+17,458 shares · 2025Q3
Position
Ray Dalio (Bridgewater Associates) opened position2025-11-13
+107,055 shares · 2025Q3
Position
Norges Bank (Norway SWF) exited2025-11-13
−4,248,256 shares · 2025Q3
Position

Insider activity

Last 30 days

Net (open-market)

Buys

0 · $0

Sells

0 · $0

Unique insiders

Date	Insider	Code	Shares	Price	Value
04-10	DEA PETER A Director	A	1,617	—	$0
04-10	KLIMLEY BROOKS J Director	A	1,617	—	$0
04-10	MCARDLE JANINE J Director	A	1,617	—	$0
04-10	KEYTE DAVID H Director	A	2,950	—	$0
04-10	MOLLENKOPF JOHN C Director	A	1,617	—	$0
04-10	Keenan W Howard JR Director	A	1,617	—	$0
04-10	Chisholm Nancy Director	A	1,617	—	$0
04-10	Munoz Jeffrey S. Director	A	1,617	—	$0

View full insider history for AM →

Follow-the-investor returns

If you'd copied each holder of AM…

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
Norges Bank (Norway SWF)	2019Q3	$9.67	+120.2%	$80.2M
T. Rowe Price	2019Q4	$11.26	+89.0%	$5.6M
Wellington Management	2019Q3	$11.85	+79.7%	$4.7M
AQR Capital Management	2019Q3	$16.80	+26.7%	$2.7M
Two Sigma Investments	2020Q4	$17.03	+25.0%	$2.1M
D.E. Shaw & Co.	2019Q1	$17.56	+21.3%	$7.8M
Izzy Englander (Millennium Mgmt)	2019Q1	$17.91	+18.9%	$532K
Izzy Englander (Millennium Mgmt)	2019Q1	$17.91	+18.9%	$532K
Izzy Englander (Millennium Mgmt)	2019Q1	$17.91	+18.9%	$532K
Steve Cohen (Point72)	2019Q1	$17.99	+18.3%	$25.5M
Paul Tudor Jones (Tudor Investment)	2024Q1	$18.11	+17.5%	$245K
Paul Tudor Jones (Tudor Investment)	2024Q1	$18.11	+17.5%	$245K
Ken Griffin (Citadel Advisors)	2019Q1	$18.16	+17.2%	$7.0M
Ken Griffin (Citadel Advisors)	2019Q1	$18.16	+17.2%	$7.0M
Ken Griffin (Citadel Advisors)	2019Q1	$18.16	+17.2%	$7.0M
Ray Dalio (Bridgewater Associates)	2024Q2	$18.81	+13.2%	$2.4M

Who moved on this name in 2025Q4

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

New positions2

Norges Bank (Norway SWF)
+3,766,025
$67.0M
Paul Tudor Jones (Tudor Investment)
+300,756
$5.4M

Added to4

Steve Cohen (Point72)
+647,638
$11.5M
Ken Griffin (Citadel Advisors)
+17,962
$320K
Ray Dalio (Bridgewater Associates)
+4,676
$83K
T. Rowe Price
+16,037
$285

Trimmed4

Wellington Management
−223,742
$4.0M
Izzy Englander (Millennium Mgmt)
−92,687
$1.6M
D.E. Shaw & Co.
−58,528
$1.0M
AQR Capital Management
−3,184
$57K

Exited0

—

Institutional ownership over time

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

Quarter	Holders	Shares	Combined value	Δ holders
2022Q1	12	39,116,104	$36.00B	—
2022Q2	11	39,724,884	$28.98B	-1
2022Q3	10	43,420,404	$398.6M	-1
2022Q4	13	48,605,507	$524.5M	+3
2023Q1	13	46,647,284	$489.3M	—
2023Q2	11	47,287,411	$548.5M	-2
2023Q3	13	47,619,416	$570.5M	+2
2023Q4	11	47,038,519	$589.4M	-2
2024Q1	11	45,765,268	$643.5M	—
2024Q2	12	48,103,392	$709.0M	+1
2024Q3	12	8,565,654	$128.9M	—
2024Q4	14	9,379,162	$141.5M	+2
2025Q1	12	6,161,819	$110.9M	-2
2025Q2	13	11,820,093	$224.0M	+1
2025Q3	13	3,019,256	$58.7M	—
2025Q4	16	7,365,509	$131.0M	+3

Who owns AM

16 super-investors · 2025Q4

Tracked stake

7.37M

Combined value

$131M

% of shares outstanding

—

shares-out unknown

Quarter action mix

New3Added6Trim6Held1

#	Manager	Shares	Value	% of book	Last action
1	Norges Bank Norway SWF	3.77M	$67M	0.0%	New+3.77M
2	Steve Cohen Point72	1.20M	$21M	0.0%	Added+647.6K
3	D.E. Shaw & Co.	366.0K	$7M	0.0%	Trim−58.5K
4	Izzy Englander Millennium Mgmt	349.6K	$6M	0.0%	Trim−92.7K
5	Ken Griffin Citadel Advisors	327.0K	$6M	0.0%	Added+18.0K
6	Paul Tudor Jones Tudor Investment	300.8K	$5M	0.0%	New+300.8K
7	T. Rowe Price	263.3K	$5M	0.0%	Added+16.0K
8	Wellington Management	218.6K	$4M	0.0%	Trim−223.7K
9	AQR Capital Management	128.8K	$2M	0.0%	Trim−3.2K
10	Ray Dalio Bridgewater Associates	111.7K	$2M	0.0%	Added+4.7K
11	Ken Griffin Citadel Advisors	98.1K	$2M	0.0%	Added+18.0K
12	Two Sigma Investments	97.1K	$2M	0.0%	Held
13	Ken Griffin Citadel Advisors	78.1K	$1M	0.0%	Added+18.0K
14	Izzy Englander Millennium Mgmt	25.0K	$445K	0.0%	Trim−92.7K
15	Izzy Englander Millennium Mgmt	25.0K	$445K	0.0%	Trim−92.7K
16	Paul Tudor Jones Tudor Investment	11.5K	$205K	0.0%	New+300.8K

Recent moves

20 transactions

ADDKen Griffin (Citadel Advisors)
+17,962 · 2025Q4
ADDSteve Cohen (Point72)
+647,638 · 2025Q4
TRIMAQR Capital Management
−3,184 · 2025Q4
TRIMIzzy Englander (Millennium Mgmt)
−92,687 · 2025Q4
TRIMWellington Management
−223,742 · 2025Q4
TRIMD.E. Shaw & Co.
−58,528 · 2025Q4
ADDT. Rowe Price
+16,037 · 2025Q4
NEWPaul Tudor Jones (Tudor Investment)
+300,756 · 2025Q4
ADDRay Dalio (Bridgewater Associates)
+4,676 · 2025Q4
NEWNorges Bank (Norway SWF)
+3,766,025 · 2025Q4
SOLDPaul Tudor Jones (Tudor Investment)
−774,009 · 2025Q3
ADDAQR Capital Management
+21,369 · 2025Q3
TRIMIzzy Englander (Millennium Mgmt)
−1,623,453 · 2025Q3
NEWSteve Cohen (Point72)
+551,287 · 2025Q3
TRIMWellington Management
−227,112 · 2025Q3
TRIMD.E. Shaw & Co.
−607,588 · 2025Q3
ADDT. Rowe Price
+17,458 · 2025Q3
NEWRay Dalio (Bridgewater Associates)
+107,055 · 2025Q3
SOLDNorges Bank (Norway SWF)
−4,248,256 · 2025Q3
TRIMTwo Sigma Investments
−534,979 · 2025Q2

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