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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 Dec 2023
the date the book describes
Filed
5 Nov 2026
latest of these filings; the earliest 17 Jan 2024
Managers listing it
22
at least, of 95 tracked, among listed positions
Comparable managers
93
filed both Q3 2023 and Q4 2023; 22 listed it in both
Shares listed
35,479,988
combined, among listed positions
Reported value
$5.9bn
combined, at the quarter end

Among the 93 comparable managers: 5 buyers (opened or added shares) and 17 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 Q4 2023

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q3 2023, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

22 of 22 holders

ActionFiling
Fidelity (FMR LLC)8,930,512$1.5bn0.11%Trimmed-317,8365 Nov 2026 (the filing on sec.gov)
MFS Investment Management7,914,963$1.3bn0.42%Trimmed-294,3178 Feb 2024 (the filing on sec.gov)
T. Rowe Price Associates Inc6,491,332$1.1bn0.14%Trimmed-578,55916 Feb 2024 (the filing on sec.gov)
AllianceBernstein LP3,084,635$509m0.20%Trimmed-135,03714 Feb 2024 (the filing on sec.gov)
Invesco Ltd2,226,418$367m0.09%Trimmed-151,95813 Feb 2024 (the filing on sec.gov)
Wellington Management Group LLP1,591,973$263munder 0.1%Trimmed-324,65112 Feb 2024 (the filing on sec.gov)
Millennium Management LLC907,823$150m0.06%Trimmed-121,29914 Feb 2024 (the filing on sec.gov)
Neuberger Berman Group LLC754,105$124m0.11%Added+8,56114 Nov 2024 (the filing on sec.gov)
GAMCO Investors Inc699,779$115m1.23%Trimmed-7,71514 Feb 2024 (the filing on sec.gov)
Two Sigma Advisers LP696,800$115m0.27%Added+30,60014 Feb 2024 (the filing on sec.gov)
Two Sigma Investments LP641,808$106m0.24%Trimmed-49,16014 Feb 2024 (the filing on sec.gov)
Janus Henderson Group Ltd305,125$50munder 0.1%Trimmed-14,59614 Feb 2024 (the filing on sec.gov)
Acadian Asset Management LLC286,965$47m0.18%Trimmed-99,92413 Feb 2024 (the filing on sec.gov)
Renaissance Technologies LLC277,450$46m0.07%Trimmed-229,50013 Feb 2024 (the filing on sec.gov)
Voloridge Investment Management LLC233,447$38m0.15%Added+83,35614 Feb 2024 (the filing on sec.gov)
Balyasny Asset Management LLC211,348$35m0.07%Trimmed-38,40614 Feb 2024 (the filing on sec.gov)
Tudor Investment Corp115,593$19m0.15%Trimmed-35,05514 Feb 2024 (the filing on sec.gov)
Soros Fund Management LLC60,505$10.0m0.13%Added+21,09914 Feb 2024 (the filing on sec.gov)
Quantbot Technologies LP19,414$3.2m0.19%Added+5,98914 Feb 2024 (the filing on sec.gov)
ARK Investment Management LLC14,628$2.4munder 0.1%Trimmed-3,67117 Jan 2024 (the filing on sec.gov)
PDT Partners LLC12,779$2.1m0.23%Trimmed-7,20014 Feb 2024 (the filing on sec.gov)
Caxton Associates LLP2,586$426kunder 0.1%Held014 Feb 2024 (the filing on sec.gov)

Largest increases and reductions, by shares

Q3 2023 to Q4 2023, 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 (0)

No new position among listed positions.

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 →