Amphenol Corporation
US ˙ NYSE ˙ US0320951017

SecurityAPH / Amphenol Corporation
InstitutionNoesis Capital Mangement Corp
Latest Disclosed Ownership265,749 shares
Latest Disclosed Value $ 33,577,424
Noesis Capital Mangement Corp reports 2.34% increase in ownership of APH / Amphenol Corporation

On May 5, 2026 - Noesis Capital Mangement Corp filed a 13F-HR form disclosing ownership of 265,749 shares of Amphenol Corporation (US:APH) valued at $33,577,386 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 259,676 shares of Amphenol Corporation. This represents a change in shares of 2.34% during the quarter. The current value of the position is $36,888,619 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)
2026-05-05 2026-03-31 13F AMPHENOL CL A 032095101 265,749 6,073 2.34 33,577 -4.32 4.9642
2026-02-05 2025-12-31 13F AMPHENOL CORP CL A 032095101 259,676 -1,745 -0.67 35,093 8.48 5.0890
2025-10-23 2025-09-30 13F AMPHENOL CORP CL A 032095101 261,421 -80,627 -23.57 32,351 -4.22 5.0219
2025-08-04 2025-06-30 13F AMPHENOL CORP CL A 032095101 342,048 -6,527 -1.87 33,777 47.74 5.8660
2025-05-07 2025-03-31 13F/A-1 AMPHENOL CORP CL A 032095101 348,575 6,813 1.99 22,863 -3.67 4.5472
2025-05-06 2025-03-31 13F AMPHENOL CORP CL A 032095101 348,575 6,813 22,863 4.5472
2025-02-05 2024-12-31 13F AMPHENOL CORP CL A 032095101 341,762 3,299 0.97 23,735 7.62 4.5293
2024-11-14 2024-09-30 13F AMPHENOL CORP CL A 032095101 338,463 7,685 2.32 22,054 -1.03 4.3774
2024-08-05 2024-06-30 13F Amphenol Corp Cl A COMMON STOCKS 032095101 330,778 164,454 98.88 22,285 16.15 4.9410
2024-05-03 2024-03-31 13F Amphenol Corp Cl A COMMON STOCKS 032095101 166,324 -4,365 -2.56 19,185 13.39 4.2607
2024-02-06 2023-12-31 13F Amphenol Corp Cl A COMMON STOCKS 032095101 170,689 -1,612 -0.94 16,920 16.92 3.9888
2023-11-03 2023-09-30 13F/A-1 Amphenol Corp Cl A COMMON STOCKS 032095101 172,301 1,472 0.86 14,472 -0.28 3.7952
2023-11-03 2023-09-30 13F Amphenol Corp Cl A COMMON STOCKS 032095101 172,301 1,472 14,472 3.7952
2023-07-31 2023-06-30 13F Amphenol Corp Cl A COMMON STOCKS 032095101 170,829 -1,744 -1.01 14,512 2.89 3.5725
2023-05-08 2023-03-31 13F Amphenol Corp Cl A COMMON STOCKS 032095101 172,573 3,868 2.29 14,103 9.79 3.5716
2023-02-02 2022-12-31 13F Amphenol Corp Cl A COMMON STOCKS 032095101 168,705 -2,198 -1.29 12,845 12.24 3.6509
2022-11-01 2022-09-30 13F Amphenol Corp Cl A COMMON STOCKS 032095101 170,903 292 0.17 11,444 4.19 3.4681
2022-07-29 2022-06-30 13F Amphenol Corp Cl A COMMON STOCKS 032095101 170,611 1,937 1.15 10,984 -13.58 3.2586
2022-05-05 2022-03-31 13F Amphenol Corp Cl A COMMON STOCKS 032095101 168,674 8,610 5.38 12,710 -9.21 3.0578
2022-02-03 2021-12-31 13F Amphenol Corp Cl A COMMON STOCKS 032095101 160,064 -20,280 -11.25 13,999 6.00 2.8209
2021-11-04 2021-09-30 13F Amphenol Corp Cl A COMMON STOCKS 032095101 180,344 -1,196 -0.66 13,207 6.94 2.5794
2021-08-05 2021-06-30 13F Amphenol Corp Cl A COMMON STOCKS 032095101 181,540 1,775 0.99 12,350 4.14 2.5244
2021-05-06 2021-03-31 13F Amphenol Corp Cl A COMMON STOCKS 032095101 179,765 91,861 104.50 11,859 3.17 2.6629
2021-02-04 2020-12-31 13F Amphenol Corp Cl A COMMON STOCKS 032095101 87,904 -1,636 -1.83 11,495 18.58 2.8401
2020-11-05 2020-09-30 13F Amphenol Corp Cl A COMMON STOCKS 032095101 89,540 -2,505 -2.72 9,694 9.92 2.7447
2020-08-07 2020-06-30 13F Amphenol Corp Cl A COMMON STOCKS 032095101 92,045 -4,335 -4.50 8,819 25.56 2.7884
2020-05-06 2020-03-31 13F Amphenol Corp Cl A COMMON STOCKS 032095101 96,380 650 0.68 7,024 -32.21 2.5842
2020-02-07 2019-12-31 13F Amphenol Corp Cl A COMMON STOCKS 032095101 95,730 240 0.25 10,361 12.44 2.8870
2019-11-05 2019-09-30 13F Amphenol Corp Cl A COMMON STOCKS 032095101 95,490 1,965 2.10 9,215 2.70 2.9795
2019-08-06 2019-06-30 13F Amphenol Corp Cl A COMMON STOCKS 032095101 93,525 1,765 1.92 8,973 3.54 3.0576
2019-05-09 2019-03-31 13F Amphenol Corp Cl A COMMON STOCKS 032095101 91,760 36,850 67.11 8,666 94.79 3.1341
2019-02-08 2018-12-31 13F AMPHENOL CORP CL A 032095101 54,910 54,910 4,449 1.8055
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.