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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
30 Jun 2025
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 30 Jul 2025
Managers listing it
31
at least, of 95 tracked, among listed positions
Comparable managers
95
filed both Q1 2025 and Q2 2025; 24 listed it in both
Shares listed
33,018,918
combined, among listed positions
Reported value
$6.0bn
combined, at the quarter end

Among the 95 comparable managers: 20 buyers (opened or added shares) and 12 sellers (trimmed or exited), at least, among listed positions. Their net change in shares is not known from listed positions, because at least one of them lists it in only one of the two quarters.

Managers listing AME in Q2 2025

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q1 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

31 of 31 holders

ActionFiling
T. Rowe Price Associates Inc10,598,424$1.9bn0.22%Trimmed-371,62314 Aug 2025 (the filing on sec.gov)
Fidelity (FMR LLC)4,492,553$813munder 0.1%Trimmed-949,33014 Aug 2025 (the filing on sec.gov)
Invesco Ltd4,254,475$770m0.13%Added+775,07813 Aug 2025 (the filing on sec.gov)
Capital World Investors2,836,256$513m0.07%Trimmed-1,167,86113 Aug 2025 (the filing on sec.gov)
MFS Investment Management1,739,067$315m0.10%Trimmed-525,8608 Aug 2025 (the filing on sec.gov)
Wellington Management Group LLP896,379$162munder 0.1%Trimmed-28,77414 Aug 2025 (the filing on sec.gov)
Neuberger Berman Group LLC827,702$150m0.12%Added+17,60327 Oct 2026 (the filing on sec.gov)
Voloridge Investment Management LLC779,097$141m0.52%Trimmed-128,12114 Aug 2025 (the filing on sec.gov)
Balyasny Asset Management LLC683,155$124m0.19%Trimmed-57,31914 Aug 2025 (the filing on sec.gov)
AQR Capital Management LLC656,112$118m0.10%Addedn.a.14 Aug 2025 (the filing on sec.gov)
GAMCO Investors Inc635,319$115m1.14%Trimmed-2,88913 Aug 2025 (the filing on sec.gov)
D. E. Shaw & Co.579,890$105m0.07%Addedn.a.14 Aug 2025 (the filing on sec.gov)
Two Sigma Investments LP508,233$92m0.16%Added+174,41414 Aug 2025 (the filing on sec.gov)
Arrowstreet Capital LP422,617$76m0.05%Added+204,04413 Aug 2025 (the filing on sec.gov)
Two Sigma Advisers LP379,500$69m0.14%Added+16,10014 Aug 2025 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC373,668$68m0.46%Added+324,78814 Aug 2025 (the filing on sec.gov)
Marshall Wace LLP326,081$59m0.07%Newnew13 Aug 2025 (the filing on sec.gov)
Janus Henderson Group Ltd309,922$56munder 0.1%Added+38,63714 Aug 2025 (the filing on sec.gov)
Renaissance Technologies LLC274,450$50m0.07%Addedn.a.13 Aug 2025 (the filing on sec.gov)
Acadian Asset Management LLC247,144$45m0.09%Added+161,4567 Aug 2025 (the filing on sec.gov)
Freestone Grove Partners LP220,394$40m0.30%Added+217,70414 Aug 2025 (the filing on sec.gov)
Tudor Investment Corp179,281$32m0.07%Addedn.a.14 Aug 2025 (the filing on sec.gov)
Woodline Partners LP168,323$30m0.16%Added+90,16714 Aug 2025 (the filing on sec.gov)
Man Group PLC153,371$28m0.05%Addedn.a.14 Aug 2025 (the filing on sec.gov)
Eisler Capital Management Ltd116,934$21m0.13%Added+22,06812 Aug 2025 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

Q1 2025 to Q2 2025, 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 (1)

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 →