AMPHENOL CORP-CL A (APH) Stock Institutional Trading Activity


AMPHENOL CORP-CL A (APH) 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 Jensen Investment Management, Lone Pine Capital, Egerton Capital UK, Torray Fund, and Sequoia Financial Advisors. 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
Q2 2022Sequoia Financial AdvisorsBuy4663,720$239
Q2 2022Renaissance Technologies LLCBuy1,599,2002,222,100$143,059
Q1 2022Torray FundSell-3,70267,921$5,118
Q1 2022Jensen Investment ManagementBuy17,1651,840,772$138,702
Q1 2022Sequoia Financial AdvisorsBuy3,2543,254$245
Q1 2022Renaissance Technologies LLCBuy294,000622,900$46,936
Q4 2021Torray FundSell-4,17971,623$6,264
Q4 2021Jensen Investment ManagementSell-12,7701,823,607$159,493
Q4 2021Fundsmith Investment ServicesBuy21070,840$6,196
Q3 2021Torray FundSell-1,15475,802$5,551
Q3 2021Jensen Investment ManagementBuy1,696,4651,836,377$134,478
Q2 2021Torray FundSell-52176,956$5,265
Q2 2021Jensen Investment ManagementSell-2,258139,912$9,571
Q2 2021Meritage GroupBuy5,9165,916$405
Q2 2021Fundsmith Investment ServicesBuy70,63070,630$4,832
Q1 2021Torray FundBuy39,08277,477$5,111
Q1 2021Jensen Investment ManagementBuy66,719142,170$9,379
Q1 2021Joho CapitalBuy52,94052,940$3,492
Q1 2021Renaissance Technologies LLCBuy309,300328,900$21,698
Q4 2020Torray FundSell-2,07938,395$5,021
Q4 2020Jensen Investment ManagementSell-672,37775,451$9,867
Q3 2020Torray FundBuy32640,474$4,382
Q3 2020Jensen Investment ManagementSell-6,165747,828$80,967
Q2 2020Torray FundBuy96940,148$3,847
Q2 2020Jensen Investment ManagementSell-4,040753,993$72,240
Q2 2020Renaissance Technologies LLCSell-424,00019,600$1,878
Q1 2020Torray FundBuy3739,179$2,855
Q1 2020Jensen Investment ManagementSell-176,539758,033$55,245
Q1 2020Renaissance Technologies LLCBuy401,200443,600$32,330
Q4 2019Torray FundSell-123,59539,142$4,236

Frequently asked questions about APH activity

  • Which institutional owners are buying APH?

    Institutional owners buying APH 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 APH activity?

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

  • Is institutional interest in APH increasing?

    Institutional interest in APH 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.