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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 2024
the date the book describes
Filed
5 Nov 2026
latest of these filings; the earliest 18 Apr 2024
Managers listing it
23
at least, of 95 tracked, among listed positions
Comparable managers
93
filed both Q4 2023 and Q1 2024; 19 listed it in both
Shares listed
43,556,510
combined, among listed positions
Reported value
$6.2bn
combined, at the quarter end

1 line marked †. Value as filed implies a price far from other filers'. Each counts in holders and value as filed, and is left out of the net change in shares.

Among the 93 comparable managers: 13 buyers (opened or added shares) and 11 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 Q1 2024

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2023, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

23 of 23 holders

ActionFiling
Fidelity (FMR LLC)8,948,285$1.6bn0.11%Added+17,7735 Nov 2026 (the filing on sec.gov)
MFS Investment Management7,739,671$1.4bn0.42%Trimmed-175,29214 May 2024 (the filing on sec.gov)
T. Rowe Price Associates Inc6,536,231$1.2bn0.15%Added+44,89915 May 2024 (the filing on sec.gov)
AllianceBernstein LP3,149,186$576m0.20%Added+64,55114 May 2024 (the filing on sec.gov)
Invesco Ltd2,167,747$396m0.09%Trimmed-58,67114 May 2024 (the filing on sec.gov)
Wellington Management Group LLP1,203,452$220munder 0.1%Trimmed-388,52115 May 2024 (the filing on sec.gov)
Neuberger Berman Group LLC712,497$130m0.11%Trimmed-41,60814 Nov 2024 (the filing on sec.gov)
GAMCO Investors Inc697,209$128m1.29%Trimmed-2,57014 May 2024 (the filing on sec.gov)
Millennium Management LLC602,708$110munder 0.1%Trimmed-305,11515 May 2024 (the filing on sec.gov)
Two Sigma Advisers LP453,600$83m0.19%Trimmed-243,20015 May 2024 (the filing on sec.gov)
Acadian Asset Management LLC388,132$71m0.25%Added+101,16710 May 2024 (the filing on sec.gov)
Voloridge Investment Management LLC356,641$65m0.24%Added+123,19415 May 2024 (the filing on sec.gov)
Two Sigma Investments LP319,198$58m0.14%Trimmed-322,61015 May 2024 (the filing on sec.gov)
Janus Henderson Group Ltd283,048$52munder 0.1%Trimmed-22,07715 May 2024 (the filing on sec.gov)
Tudor Investment Corp142,978$26m0.17%Added+27,38515 May 2024 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC92,092$17m0.11%Addedn.a.15 May 2024 (the filing on sec.gov)
Soros Fund Management LLC73,334$13m0.22%Added+12,82915 May 2024 (the filing on sec.gov)
Quantbot Technologies LP51,762$9.5m0.53%Added+32,3486 May 2024 (the filing on sec.gov)
Brevan Howard Capital Management LP† Value as filed implies a price far from other filers'.9,600,000$8.5m0.08%Newnew15 May 2024 (the filing on sec.gov)
PDT Partners LLC19,650$3.6m0.34%Added+6,87115 May 2024 (the filing on sec.gov)
ARK Investment Management LLC13,081$2.4munder 0.1%Trimmed-1,54718 Apr 2024 (the filing on sec.gov)
Winton Group Ltd4,199$768k0.05%Newnew14 May 2024 (the filing on sec.gov)
Maverick Capital Ltd1,809$331kunder 0.1%Newnew15 May 2024 (the filing on sec.gov)

Largest increases and reductions, by shares

Q4 2023 to Q1 2024, 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 →