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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- AMPHENOL CORP-CL A (APH) stock institutional ownership
- AMPHENOL CORP-CL A (APH) stock insider trading activity
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| Portfolio quarter | Name | Type | Quantity | Remaining | Reported stock balance |
|---|---|---|---|---|---|
| Q1 2017 | Jensen Investment Management | Sell | -6,065 | 2,389,494 | $170,060 |
| Q1 2017 | First Eagle U.S. Value | Sell | -361,078 | 3,471,432 | $247,062 |
| Q4 2016 | Torray Fund | Sell | -38,573 | 258,435 | $17,367 |
| Q4 2016 | Jensen Investment Management | Sell | -734,975 | 2,395,559 | $160,982 |
| Q4 2016 | First Eagle U.S. Value | Sell | -68,416 | 3,832,510 | $257,545 |
| Q3 2016 | Torray Fund | Sell | -225,651 | 297,008 | $19,282 |
| Q3 2016 | Jensen Investment Management | Sell | -25,873 | 3,130,534 | $203,234 |
| Q3 2016 | Renaissance Technologies LLC | Sell | -358,000 | 68,100 | $4,421 |
| Q3 2016 | First Eagle U.S. Value | Buy | 64,260 | 3,900,926 | $253,248 |
| Q2 2016 | Torray Fund | Sell | -341,863 | 522,659 | $29,964 |
| Q2 2016 | Jensen Investment Management | Sell | -51,700 | 3,156,407 | $180,957 |
| Q2 2016 | Renaissance Technologies LLC | Buy | 368,500 | 426,100 | $24,428 |
| Q2 2016 | First Eagle U.S. Value | Buy | 311,980 | 3,836,666 | $219,956 |
| Q1 2016 | Torray Fund | Buy | 246,253 | 864,522 | $49,987 |
| Q1 2016 | Jensen Investment Management | Buy | 14,228 | 3,208,107 | $185,493 |
| Q1 2016 | Renaissance Technologies LLC | Sell | -385,000 | 57,600 | $3,330 |
| Q1 2016 | First Eagle U.S. Value | Buy | 3,061,735 | 3,524,686 | $203,797 |
| Q4 2015 | Torray Fund | Sell | -48,855 | 618,269 | $32,292 |
| Q4 2015 | Jensen Investment Management | Buy | 11,800 | 3,193,879 | $166,816 |
| Q4 2015 | Renaissance Technologies LLC | Buy | 23,220 | 442,600 | $23,117 |
| Q3 2015 | Torray Fund | Buy | 2,030 | 667,124 | $33,997 |
| Q3 2015 | Jensen Investment Management | Buy | 31,320 | 3,182,079 | $162,159 |
| Q3 2015 | Renaissance Technologies LLC | Buy | 419,380 | 419,380 | $21,372 |
| Q2 2015 | Torray Fund | Buy | 184,414 | 665,094 | $38,555 |
| Q2 2015 | Jensen Investment Management | Sell | -16,670 | 3,150,759 | $182,649 |
| Q1 2015 | Torray Fund | Sell | -13,130 | 480,680 | $28,326 |
| Q1 2015 | Jensen Investment Management | Buy | 3,676 | 3,167,429 | $186,657 |
| Q4 2014 | Torray Fund | Buy | 268,510 | 493,810 | $26,572 |
| Q4 2014 | Jensen Investment Management | Buy | 1,554,867 | 3,163,753 | $170,242 |
| Q3 2014 | Torray Fund | Buy | 28,290 | 225,300 | $22,498 |
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.