Amphenol Corporation
US ˙ NYSE ˙ US0320951017

SecurityAPH / Amphenol Corporation
InstitutionSimon Quick Advisors, Llc
Latest Disclosed Ownership2,941 shares
Latest Disclosed Value $ 371,545
Simon Quick Advisors, Llc reports 11.89% decrease in ownership of APH / Amphenol Corporation

On May 6, 2026 - Simon Quick Advisors, Llc filed a 13F-HR form disclosing ownership of 2,941 shares of Amphenol Corporation (US:APH) valued at $371,595 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 3,338 shares of Amphenol Corporation. This represents a change in shares of -11.89% during the quarter. The current value of the position is $434,150 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-06 2026-03-31 13F AMPHENOL CL A 032095101 2,941 -397 -11.89 372 -17.74 0.0170
2026-01-29 2025-12-31 13F AMPHENOL CORP CL A 032095101 3,338 336 11.19 451 21.56 0.0197
2025-10-21 2025-09-30 13F AMPHENOL CORP CL A 032095101 3,002 274 10.04 372 37.92 0.0168
2025-10-08 2025-06-30 13F/A-1 AMPHENOL CORP CL A 032095101 2,728 -6,583 -70.70 269 -55.90 0.0136
2025-08-04 2025-06-30 13F AMPHENOL CORP CL A 032095101 12,331 3,020 1,218 0.0490
2025-04-15 2025-03-31 13F AMPHENOL CORP CL A 032095101 9,311 1,433 18.19 611 11.52 0.0348
2025-01-17 2024-12-31 13F AMPHENOL CORP CL A 032095101 7,878 541 7.37 547 14.44 0.0328
2024-10-15 2024-09-30 13F AMPHENOL CORP CL A 032095101 7,337 -3,192 -30.32 478 -32.58 0.0302
2024-08-02 2024-06-30 13F AMPHENOL CORP CL A 032095101 10,529 5,553 111.60 709 23.73 0.0501
2024-04-19 2024-03-31 13F AMPHENOL CORP CL A 032095101 4,976 -445 -8.21 574 6.70 0.0430
2024-01-16 2023-12-31 13F AMPHENOL CORP CL A 032095101 5,421 115 2.17 537 20.67 0.0475
2023-10-24 2023-09-30 13F AMPHENOL CORP CL A 032095101 5,306 1,170 28.29 446 26.78 0.0420
2023-08-01 2023-06-30 13F AMPHENOL CORP CL A 032095101 4,136 -641 -13.42 351 -10.00 0.0324
2023-05-15 2023-03-31 13F AMPHENOL CORP CL A 032095101 4,777 4,777 390 0.0423
2022-08-08 2022-06-30 13F Amphenol Corp Cl A COM 032095101 0 -829 -100.00 0 -100.00
2022-05-05 2022-03-31 13F Amphenol Corp Cl A COM 032095101 829 6 0.73 62 -13.89 0.0176
2022-02-08 2021-12-31 13F Amphenol Corp Cl A COM 032095101 823 -911 -52.54 72 -43.31 0.0192
2021-10-27 2021-09-30 13F Amphenol Corp Cl A COM 032095101 1,734 915 111.72 127 126.79 0.0327
2021-07-21 2021-06-30 13F Amphenol Corp Cl A COM 032095101 819 1 0.12 56 5.66 0.0148
2021-05-06 2021-03-31 13F Amphenol Corp Cl A COM 032095101 818 409 100.00 53 0.00 0.0156
2021-01-27 2020-12-31 13F Amphenol Corp Cl A COM 032095101 409 409 53 0.0160
2020-04-09 2020-03-31 13F Amphenol Corp Cl A COM 032095101 0 -42 -100.00 0 -100.00
2020-01-06 2019-12-31 13F Amphenol Corp Cl A COM 032095101 42 42 5 0.0018
2019-10-16 2019-09-30 13F Amphenol Corp Cl A COM 032095101 0 -115 -100.00 0 -100.00
2019-08-05 2019-06-30 13F Amphenol Corp Cl A COM 032095101 115 115 11 0.0056
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.