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AM in the 13F filings

Antero Midstream Corp · CUSIP 03676B102

Sector · EnergyTheme · Energy and power infrastructure· L3VLUP-defined
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023Q3 2023
Quarter end
30 Jun 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 3 Aug 2026
Managers listing it
27
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q1 2026 and Q2 2026; 6 listed it in both
Shares listed
40,065,047
combined, among listed positions
Reported value
$912m
combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 20 buyers (opened or added shares) and 10 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +1,764,729.

Managers listing AM in Q2 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q1 2026, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

27 of 27 holders

ActionFiling
Invesco Ltd20,746,981$472munder 0.1%Trimmed-809,92214 Aug 2026 (the filing on sec.gov)
Neuberger Berman Group LLC7,434,848$169m0.11%Added+162,22227 Oct 2026 (the filing on sec.gov)
AllianceBernstein LP3,625,697$83munder 0.1%Trimmed-198,25014 Aug 2026 (the filing on sec.gov)
Fidelity (FMR LLC)1,875,073$43munder 0.1%Added+262,56813 Aug 2026 (the filing on sec.gov)
Voloridge Investment Management LLC754,663$17m0.07%Trimmed-227,57914 Aug 2026 (the filing on sec.gov)
Freestone Grove Partners LP698,696$16m0.10%Added+170,93014 Aug 2026 (the filing on sec.gov)
D. E. Shaw & Co.644,890$15munder 0.1%Added+230,02414 Aug 2026 (the filing on sec.gov)
Wellington Management Group LLP571,156$13munder 0.1%Added+169,39714 Aug 2026 (the filing on sec.gov)
Walleye Capital LLC459,598$10munder 0.1%Added+445,6823 Aug 2026 (the filing on sec.gov)
AQR Capital Management LLC420,453$9.6munder 0.1%Added+227,11614 Aug 2026 (the filing on sec.gov)
Artisan Partners LP395,008$9.0munder 0.1%Newnew13 Aug 2026 (the filing on sec.gov)
Caxton Associates LLP394,955$9.0m0.17%Newnew14 Aug 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc318,412$7.2munder 0.1%Added+19,14914 Aug 2026 (the filing on sec.gov)
Quantbot Technologies LP253,117$5.8m0.23%Added+116,32112 Aug 2026 (the filing on sec.gov)
Holocene Advisors LP193,139$4.4munder 0.1%Newnew14 Aug 2026 (the filing on sec.gov)
Two Sigma Investments LP192,842$4.4munder 0.1%Added+80,09014 Aug 2026 (the filing on sec.gov)
Janus Henderson Group Ltd192,249$4.4munder 0.1%Trimmed-81,52314 Aug 2026 (the filing on sec.gov)
Bridgewater Associates LP178,664$4.1munder 0.1%Added+27,24914 Aug 2026 (the filing on sec.gov)
Millennium Management LLC178,300$4.1munder 0.1%Newnew14 Aug 2026 (the filing on sec.gov)
Marshall Wace LLP161,558$3.7munder 0.1%Added+143,03313 Aug 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP99,670$2.3munder 0.1%Added+69,22414 Aug 2026 (the filing on sec.gov)
Arrowstreet Capital LP90,727$2.1munder 0.1%Trimmed-104,08113 Aug 2026 (the filing on sec.gov)
Squarepoint Ops LLC77,056$1.8munder 0.1%Added+53,07714 Aug 2026 (the filing on sec.gov)
Brevan Howard Capital Management LP59,336$1.4munder 0.1%Newnew14 Aug 2026 (the filing on sec.gov)
Susquehanna International Group LLP28,586$650kunder 0.1%Trimmed-26,58014 Aug 2026 (the filing on sec.gov)
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Largest increases and reductions, by shares

Q1 2026 to Q2 2026, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (5)

Exited (3)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
6 in Q3 2024 to 10 in Q2 2026

Tracked managers listing it, at least.

03581020192020202120222023202420252026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
AM by quarter
QuarterHoldersReported valueBuyersSellers
Q1 20194$291mn.a.n.a.
Q2 20194$413mn.a.n.a.
Q3 20193$345mn.a.n.a.
Q4 20193$488mn.a.n.a.
Q1 20204$153mn.a.n.a.
Q2 20202$184mn.a.n.a.
Q3 20202$157mn.a.n.a.
Q4 20201$215mn.a.n.a.
Q1 20212$282mn.a.n.a.
Q2 20212$352mn.a.n.a.
Q3 20212$338mn.a.n.a.
Q4 20211$303mn.a.n.a.
Q1 20222$383mn.a.n.a.
Q2 20222$350mn.a.n.a.
Q3 20222$374mn.a.n.a.
Q4 20223$439mn.a.n.a.
Q1 20235$451mn.a.n.a.
Q2 20234$477mn.a.n.a.
Q3 20235$489mn.a.n.a.
Q4 20234$509m22
Q1 20245$563m42
Q2 20247$628m61
Q3 20246$643m51
Q4 20247$648m34
Q1 20258$737m62
Q2 20257$689m61
Q3 20256$634m16
Q4 20255$587m1315
Q1 20267$764m1811
Q2 202610$795m2010

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

AM and GEV →AM and XOM →AM and CVX →Choose a stock to compare with AM →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own AM, latest filings →Back to the 13F Explorer →