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WESTFIELD CAPITAL MANAGEMENT CO LP

Position in AME — Ametek Inc/

CIK 1177719 BOSTON, MA

Position in AME

as of Mar 31, 2026 · filed May 11, 2026
Position Value
$159,876,547
-$24,946,799 QoQ
Shares Held
745,832
-17.1% QoQ
Ownership
0.325%
of shares outstanding
% of Portfolio
0.67%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority Sole 82.72814789389568.ToString("F0")% Shared 0.ToString("F0")% None 17.271852106104323.ToString("F0")%

Common Shares in AME Over Time

Shares Held

Position Value (USD)

Position in Specialty Industrial Machinery

Industrials · as of Mar 31, 2026

WESTFIELD CAPITAL MANAGEMENT CO LP holds $810,946,402 across 8 Specialty Industrial Machinery names. AME ranks #2 (19.7% of the industry book) .

# Ticker Company Shares Value (USD) Open
2 AME
Ametek Inc/
This page
745,832 $159,876,547

All Filings in AME

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25 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $159,876,547 745,832
2025-12-31 $184,823,346 900,216
2025-09-30 $67,428,080 358,660
2025-06-30 $71,554,479 395,416
2025-03-31 $70,039,978 406,878
2024-12-31 $74,151,573 411,359
2024-09-30 $73,552,837 428,355
2024-06-30 $73,851,863 442,996
2024-03-31 $174,413,988 953,603
2023-12-31 $161,565,817 979,840
2023-09-30 $153,675,276 1,040,033
2023-06-30 $173,504,926 1,071,812
2023-03-31 $159,404,338 1,096,844
2022-12-31 $165,528,240 1,184,714
2022-09-30 $133,997,657 1,181,533
2022-06-30 $130,036,023 1,183,329
2022-03-31 $171,936,445 1,291,008
2021-12-31 $181,692,475 1,235,667
2021-09-30 $160,310,083 1,292,719
2021-06-30 $176,179,549 1,319,697
2021-03-31 $176,564,883 1,382,329
2020-12-31 $180,835,535 1,495,250
2020-09-30 $152,177,722 1,530,963
2020-06-30 $133,893,419 1,498,192
2020-03-31 $109,890,060 1,525,827