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
Q4 2019Jensen Investment ManagementSell-859,115934,572$101,149
Q4 2019Renaissance Technologies LLCSell-35,10042,400$4,589
Q3 2019Torray FundSell-4,217162,737$15,704
Q3 2019Jensen Investment ManagementBuy32,5841,793,687$173,091
Q3 2019Renaissance Technologies LLCSell-510,90077,500$7,479
Q2 2019Torray FundSell-7,485166,954$16,018
Q2 2019Jensen Investment ManagementSell-475,6741,761,103$168,960
Q2 2019Renaissance Technologies LLCBuy355,500588,400$56,451
Q1 2019Torray FundSell-4,310174,439$16,474
Q1 2019Jensen Investment ManagementSell-13,1642,236,777$211,241
Q1 2019Renaissance Technologies LLCSell-449,500232,900$21,995
Q4 2018Torray FundSell-6,705178,749$14,482
Q4 2018Jensen Investment ManagementBuy7,7602,249,941$182,290
Q4 2018Renaissance Technologies LLCBuy574,173682,400$55,288
Q3 2018Torray FundSell-4,000185,454$17,436
Q3 2018Jensen Investment ManagementSell-2,5402,242,181$210,810
Q2 2018Torray FundSell-10,762189,454$16,511
Q2 2018Jensen Investment ManagementSell-77,6702,244,721$195,627
Q1 2018Torray FundSell-13,850200,216$17,245
Q1 2018Jensen Investment ManagementBuy882,322,391$200,028
Q1 2018Renaissance Technologies LLCBuy40,127108,227$9,322
Q4 2017Torray FundSell-8,679214,066$18,795
Q4 2017Jensen Investment ManagementSell-2,9462,322,303$203,898
Q3 2017Torray FundSell-4,046222,745$18,853
Q3 2017Jensen Investment ManagementSell-14,2602,325,249$196,809
Q3 2017First Eagle U.S. ValueSell-553,3891,069,110$90,489
Q2 2017Torray FundSell-18,811226,791$16,742
Q2 2017Jensen Investment ManagementSell-49,9852,339,509$172,703
Q2 2017First Eagle U.S. ValueSell-1,848,9331,622,499$119,773
Q1 2017Torray FundSell-12,833245,602$17,479

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.