AMETEK INC (AME) Stock Institutional Trading Activity


AMETEK INC (AME) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q4 2025), investors with some of the largest reported share count changes include Renaissance Technologies LLC, Giverny Capital, ARK Invest, Sequoia Financial Advisors, and Bares Capital Management. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.

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Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2024Giverny CapitalBuy17,686927,977$169,726,993
Q4 2023ARK InvestSell-3,67114,628$2,412,011
Q4 2023Renaissance Technologies LLCSell-229,500277,450$45,749
Q4 2023Sequoia Financial AdvisorsBuy1,8285,842$963,347
Q4 2023Giverny CapitalBuy13,235910,291$150,097,883
Q3 2023ARK InvestSell-1,89018,299$2,703,860
Q3 2023Renaissance Technologies LLCBuy373,400506,950$74,907
Q3 2023Sequoia Financial AdvisorsBuy634,014$593,047
Q3 2023Giverny CapitalBuy4,556897,056$132,548,995
Q2 2023ARK InvestSell-52920,189$3,268,195
Q2 2023Renaissance Technologies LLCBuy102,800133,550$21,619
Q2 2023Sequoia Financial AdvisorsSell-303,951$639,629
Q2 2023Giverny CapitalBuy50,892892,500$144,477,900
Q1 2023ARK InvestSell-3,67020,718$3,010,947
Q1 2023Renaissance Technologies LLCSell-207,80030,750$4,469
Q1 2023Sequoia Financial AdvisorsBuy2703,981$578,527
Q1 2023Giverny CapitalSell-11,690841,608$122,310,891
Q4 2022ARK InvestSell-3,91624,388$3,407,491
Q4 2022Renaissance Technologies LLCSell-357,500238,550$33,330
Q4 2022Giverny CapitalBuy6,450853,298$119,223
Q4 2022Sequoia Financial AdvisorsBuy1,0263,711$518,469
Q3 2022ARK InvestSell-5,44028,304$3,210
Q3 2022Sequoia Financial AdvisorsBuy682,685$304
Q3 2022Renaissance Technologies LLCSell-398,468596,050$67,598
Q3 2022Giverny CapitalBuy19,179846,848$96,041
Q2 2022ARK InvestSell-3,36433,744$4,099
Q2 2022Sequoia Financial AdvisorsBuy2382,617$288
Q2 2022Giverny CapitalBuy21,751827,669$90,953
Q2 2022Renaissance Technologies LLCBuy557,368994,518$109,288
Q1 2022ARK InvestSell-3,41637,108$4,942

Frequently asked questions about AME activity

  • Which institutional owners are buying AME?

    Institutional owners buying AME include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in AME activity?

    "Buy" means an investor increased their reported position in AME compared to the prior reporting period. This reflects growing exposure to AMETEK INC (AME) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in AME increasing?

    Institutional interest in AME can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.