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AME in the 13F filings

Ametek Inc · CUSIP 031100100

Sector · IndustrialsTheme · Industrials and automation· L3VLUP-defined
Quarter
Q3 2026 · early filersQ2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 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
42
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 30 listed it in both
Shares listed
33,961,661
combined, among listed positions
Reported value
$7.3bn
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: 24 buyers (opened or added shares) and 19 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was -1,348,146.

Managers listing AME 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.

42 of 42 holders

ActionFiling
T. Rowe Price Associates Inc6,924,498$1.5bn0.17%Trimmed-967,51615 May 2026 (the filing on sec.gov)
Fidelity (FMR LLC)4,358,253$934munder 0.1%Trimmed-139,48815 May 2026 (the filing on sec.gov)
Invesco Ltd3,130,864$671m0.07%Trimmed-1,150,61812 May 2026 (the filing on sec.gov)
Wellington Management Group LLP2,797,091$600m0.11%Trimmed-10,57315 May 2026 (the filing on sec.gov)
Capital World Investors1,849,072$396m0.05%Added+758,08213 May 2026 (the filing on sec.gov)
Two Sigma Investments LP1,631,092$350m0.28%Added+620,62115 May 2026 (the filing on sec.gov)
Citadel Advisors LLC1,445,049$310m0.05%Trimmed-290,55215 May 2026 (the filing on sec.gov)
MFS Investment Management1,413,837$306m0.10%Added+453,90014 May 2026 (the filing on sec.gov)
Man Group PLC1,139,692$244m0.44%Added+42,18315 May 2026 (the filing on sec.gov)
AQR Capital Management LLC1,044,473$221m0.10%Added+147,05015 May 2026 (the filing on sec.gov)
Neuberger Berman Group LLC1,016,768$218m0.17%Added+131,76727 Oct 2026 (the filing on sec.gov)
D. E. Shaw & Co.890,254$191m0.11%Trimmed-536,68015 May 2026 (the filing on sec.gov)
Balyasny Asset Management LLC763,415$164m0.21%Trimmed-307,14015 May 2026 (the filing on sec.gov)
Acadian Asset Management LLC560,118$120m0.17%Added+65,80213 May 2026 (the filing on sec.gov)
GAMCO Investors Inc548,597$118m1.16%Trimmed-58,26214 May 2026 (the filing on sec.gov)
Arrowstreet Capital LP542,044$116m0.06%Added+97,71614 May 2026 (the filing on sec.gov)
Voloridge Investment Management LLC507,748$109m0.44%Trimmed-268,31215 May 2026 (the filing on sec.gov)
Point72 Asset Management LP373,872$80m0.10%Added+248,84015 May 2026 (the filing on sec.gov)
Millennium Management LLC369,887$79munder 0.1%Trimmed-442,97115 May 2026 (the filing on sec.gov)
Janus Henderson Group Ltd321,113$69munder 0.1%Trimmed-78,04018 May 2026 (the filing on sec.gov)
Renaissance Technologies LLC306,150$66m0.10%Added+151,50014 May 2026 (the filing on sec.gov)
Freestone Grove Partners LP285,435$61m0.43%Trimmed-308,45015 May 2026 (the filing on sec.gov)
Artisan Partners LP273,372$59m0.09%Added+94,34713 May 2026 (the filing on sec.gov)
AllianceBernstein LP260,707$54munder 0.1%Trimmed-17,51215 May 2026 (the filing on sec.gov)
Davidson Kempner Capital Management LP180,000$39m0.46%Added+55,00015 May 2026 (the filing on sec.gov)
Page 1 of 2

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 (1)

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.
22 in Q3 2024 to 34 in Q2 2026

Tracked managers listing it, at least.

0102030402014201620182020202220242026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
AME by quarter
QuarterHoldersReported valueBuyersSellers
Q2 201312$1.8bnn.a.n.a.
Q3 201314$2.1bnn.a.n.a.
Q4 201310$2.5bnn.a.n.a.
Q1 201411$2.3bnn.a.n.a.
Q2 201415$2.6bnn.a.n.a.
Q3 201417$2.6bnn.a.n.a.
Q4 201410$3.1bnn.a.n.a.
Q1 201512$3.4bnn.a.n.a.
Q2 20158$3.8bnn.a.n.a.
Q3 20159$3.7bnn.a.n.a.
Q4 20159$3.7bnn.a.n.a.
Q1 201619$3.3bnn.a.n.a.
Q2 201619$3.2bnn.a.n.a.
Q3 201619$3.1bnn.a.n.a.
Q4 201619$2.3bnn.a.n.a.
Q1 201713$2.6bnn.a.n.a.
Q2 201714$3.0bnn.a.n.a.
Q3 201716$3.0bnn.a.n.a.
Q4 201717$3.2bnn.a.n.a.
Q1 201817$3.1bnn.a.n.a.
Q2 201819$2.8bnn.a.n.a.
Q3 201818$3.1bnn.a.n.a.
Q4 201823$2.8bnn.a.n.a.
Q1 201921$3.2bnn.a.n.a.
Q2 201917$3.5bnn.a.n.a.
Q3 201916$3.5bnn.a.n.a.
Q4 201917$3.6bnn.a.n.a.
Q1 202019$2.4bnn.a.n.a.
Q2 202019$3.1bnn.a.n.a.
Q3 202020$3.2bnn.a.n.a.
Q4 202020$4.1bnn.a.n.a.
Q1 202121$3.9bnn.a.n.a.
Q2 202121$4.1bnn.a.n.a.
Q3 202127$4.2bnn.a.n.a.
Q4 202128$4.7bnn.a.n.a.
Q1 202226$4.3bnn.a.n.a.
Q2 202232$3.6bnn.a.n.a.
Q3 202230$3.8bnn.a.n.a.
Q4 202228$4.9bnn.a.n.a.
Q1 202327$5.8bnn.a.n.a.
Q2 202325$6.4bnn.a.n.a.
Q3 202328$5.7bnn.a.n.a.
Q4 202322$5.9bn517
Q1 202423$6.2bn1311
Q2 202424$6.3bn1214
Q3 202422$6.3bn1212
Q4 202426$6.3bn1611
Q1 202525$5.5bn1412
Q2 202531$6.0bn2012
Q3 202532$6.2bn1814
Q4 202531$7.3bn2221
Q1 202634$7.1bn2419
Q2 202634$7.6bn2022

Compare with…

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

AME and GE →AME and LRCX →AME and GEV →Choose a stock to compare with AME →

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 AME, latest filings →Back to the 13F Explorer →