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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
31 Mar 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 12 May 2026
Managers listing it
25
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 5 listed it in both
Shares listed
38,300,318
combined, among listed positions
Reported value
$854m
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: 18 buyers (opened or added shares) and 11 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +659,663.

Managers listing AM in Q1 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

25 of 25 holders

ActionFiling
Invesco Ltd21,556,903$491munder 0.1%Trimmed-1,887,12312 May 2026 (the filing on sec.gov)
Neuberger Berman Group LLC7,272,626$166m0.13%Trimmed-164,62627 Oct 2026 (the filing on sec.gov)
AllianceBernstein LP3,823,947$68munder 0.1%Added+3,331,46215 May 2026 (the filing on sec.gov)
Fidelity (FMR LLC)1,612,505$37munder 0.1%Added+1,335,08915 May 2026 (the filing on sec.gov)
Voloridge Investment Management LLC982,242$22m0.09%Trimmed-452,20815 May 2026 (the filing on sec.gov)
Freestone Grove Partners LP527,766$12m0.08%Added+154,95515 May 2026 (the filing on sec.gov)
D. E. Shaw & Co.414,866$9.5munder 0.1%Added+48,88715 May 2026 (the filing on sec.gov)
Wellington Management Group LLP401,759$9.2munder 0.1%Added+183,20115 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc299,263$6.8munder 0.1%Added+35,93315 May 2026 (the filing on sec.gov)
Janus Henderson Group Ltd273,772$6.2munder 0.1%Added+113,69618 May 2026 (the filing on sec.gov)
Arrowstreet Capital LP194,808$4.4munder 0.1%Newnew14 May 2026 (the filing on sec.gov)
AQR Capital Management LLC193,337$4.4munder 0.1%Added+64,51315 May 2026 (the filing on sec.gov)
Bridgewater Associates LP151,415$3.5munder 0.1%Added+39,68415 May 2026 (the filing on sec.gov)
Quantbot Technologies LP136,796$3.1m0.13%Added+60,60513 May 2026 (the filing on sec.gov)
Two Sigma Investments LP112,752$2.6munder 0.1%Added+15,65215 May 2026 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC84,259$1.9munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
PDT Partners LLC69,790$1.6m0.09%Trimmed-212,77215 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP55,166$1.3munder 0.1%Added+7,03215 May 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP30,446$694kunder 0.1%Trimmed-29,85514 May 2026 (the filing on sec.gov)
Balyasny Asset Management LLC24,876$567kunder 0.1%Added+1,67915 May 2026 (the filing on sec.gov)
Squarepoint Ops LLC23,979$547kunder 0.1%Added+24715 May 2026 (the filing on sec.gov)
Marshall Wace LLP18,525$422kunder 0.1%Trimmed-144,22015 May 2026 (the filing on sec.gov)
Jane Street Group LLC15,746$359kunder 0.1%Newnew12 May 2026 (the filing on sec.gov)
Walleye Capital LLC13,916$317kunder 0.1%Added+12,42813 May 2026 (the filing on sec.gov)
Citadel Advisors LLC8,858$202kunder 0.1%Trimmed-69,25315 May 2026 (the filing on sec.gov)

Largest increases and reductions, by shares

Q4 2025 to Q1 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 (3)

Exited (4)

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 →