Amphenol Corporation
US ˙ NYSE ˙ US0320951017

SecurityAPH / Amphenol Corporation
InstitutionWhittier Trust Co
Latest Disclosed Ownership484,572 shares
Latest Disclosed Value $ 61,293,466
Whittier Trust Co reports 7.33% increase in ownership of APH / Amphenol Corporation

On April 28, 2026 - Whittier Trust Co filed a 13F-HR form disclosing ownership of 484,572 shares of Amphenol Corporation (US:APH) valued at $61,225,672 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 451,494 shares of Amphenol Corporation. This represents a change in shares of 7.33% during the quarter. The current value of the position is $71,532,519 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)
2026-04-28 2026-03-31 13F AMPHENOL common 032095101 484,572 33,078 7.33 61,293 -3.98 0.6917
2026-01-26 2025-12-31 13F AMPHENOL common 032095101 451,494 170,668 60.77 63,832 85.98 0.6913
2025-10-31 2025-09-30 13F AMPHENOL CORP common 032095101 280,826 7,102 2.59 34,323 26.98 0.3907
2025-07-30 2025-06-30 13F AMPHENOL CORP NEW CL A US LARGE-CAP EQUITIES 032095101 273,724 13,812 5.31 27,030 58.56 0.3259
2025-05-02 2025-03-31 13F AMPHENOL CORP NEW CL A US LARGE-CAP EQUITIES 032095101 259,912 3,061 1.19 17,047 -4.43 0.2375
2025-02-11 2024-12-31 13F AMPHENOL CORP NEW CL A US LARGE-CAP EQUITIES 032095101 256,851 6,271 2.50 17,838 9.27 0.2350
2024-10-21 2024-09-30 13F AMPHENOL CORP NEW CL A US LARGE-CAP EQUITIES 032095101 250,580 4,865 1.98 16,325 -1.37 0.2185
2024-07-29 2024-06-30 13F AMPHENOL CORP NEW CL A US LARGE-CAP EQUITIES 032095101 245,715 126,021 105.29 16,551 19.88 0.2348
2024-05-02 2024-03-31 13F AMPHENOL CORP NEW CL A US LARGE-CAP EQUITIES 032095101 119,694 -916 -0.76 13,806 15.48 0.2013
2024-01-11 2023-12-31 13F AMPHENOL CORP NEW CL A US LARGE-CAP EQUITIES 032095101 120,610 409 0.34 11,956 18.42 0.1938
2023-10-27 2023-09-30 13F AMPHENOL CORP NEW CL A US LARGE-CAP EQUITIES 032095101 120,201 1,951 1.65 10,095 0.51 0.1794
2023-07-24 2023-06-30 13F AMPHENOL CORP NEW CL A US LARGE-CAP EQUITIES 032095101 118,250 -2,062 -1.71 10,045 2.17 0.1746
2023-04-21 2023-03-31 13F AMPHENOL CORP NEW CL A US LARGE-CAP EQUITIES 032095101 120,312 -2,075 -1.70 9,831 5.53 0.1790
2023-01-25 2022-12-31 13F AMPHENOL CORP NEW CL A US LARGE-CAP EQUITIES 032095101 122,387 -49,636 -28.85 9,317 -19.11 0.1812
2022-10-21 2022-09-30 13F AMPHENOL CORP NEW CL A US LARGE-CAP EQUITIES 032095101 172,023 2,247 1.32 11,517 5.37 0.2414
2022-07-28 2022-06-30 13F AMPHENOL CORP NEW CL A US LARGE-CAP EQUITIES 032095101 169,776 213 0.13 10,930 -14.45 0.2208
2022-04-29 2022-03-31 13F AMPHENOL CORP NEW CL A US LARGE-CAP EQUITIES 032095101 169,563 -3,185 -1.84 12,776 -15.44 0.2155
2022-01-19 2021-12-31 13F AMPHENOL CORP NEW CL A US LARGE-CAP EQUITIES 032095101 172,748 401 0.23 15,108 19.72 0.2455
2021-11-01 2021-09-30 13F AMPHENOL CORP NEW CL A US LARGE-CAP EQUITIES 032095101 172,347 -1,450 -0.83 12,619 6.15 0.2298
2021-07-29 2021-06-30 13F AMPHENOL CORP NEW CL A US LARGE-CAP EQUITIES 032095101 173,797 1,331 0.77 11,888 4.49 0.2118
2021-04-26 2021-03-31 13F AMPHENOL CORP NEW CL A US LARGE-CAP EQUITIES 032095101 172,466 65,006 60.49 11,377 -19.04 0.2210
2021-01-29 2020-12-31 13F AMPHENOL CORP NEW CL A US LARGE-CAP EQUITIES 032095101 107,460 1,986 1.88 14,053 23.06 0.3002
2020-10-30 2020-09-30 13F AMPHENOL CORP NEW CL A US LARGE-CAP EQUITIES 032095101 105,474 432 0.41 11,420 13.47 0.2719
2020-07-10 2020-06-30 13F AMPHENOL CORP NEW CL A US LARGE-CAP EQUITIES 032095101 105,042 -15,498 -12.86 10,064 14.57 0.2795
2020-04-27 2020-03-31 13F AMPHENOL CORP NEW CL A US LARGE-CAP EQUITIES 032095101 120,540 -13,487 -10.06 8,784 -39.45 0.2868
2020-01-31 2019-12-31 13F AMPHENOL CORP NEW CL A US LARGE-CAP EQUITIES 032095101 134,027 -2,994 -2.19 14,506 9.71 0.3806
2019-10-18 2019-09-30 13F AMPHENOL CORP NEW CL A US LARGE-CAP EQUITIES 032095101 137,021 -102 -0.07 13,222 0.51 0.3784
2019-07-23 2019-06-30 13F AMPHENOL CORP NEW CL A US LARGE-CAP EQUITIES 032095101 137,123 1,259 0.93 13,155 2.53 0.3863
2019-04-29 2019-03-31 13F AMPHENOL CORP NEW CL A US LARGE-CAP EQUITIES 032095101 135,864 8,545 6.71 12,831 24.39 0.3923
2019-02-07 2018-12-31 13F AMPHENOL CORP NEW CL A US LARGE-CAP EQUITIES 032095101 127,319 17,665 16.11 10,315 0.05 0.3549
2018-10-23 2018-09-30 13F AMPHENOL CORP NEW CL A US LARGE-CAP EQUITIES 032095101 109,654 2,610 2.44 10,310 10.52 0.3217
2018-07-27 2018-06-30 13F/A-1 AMPHENOL CORP NEW CL A US LARGE-CAP EQUITIES 032095101 107,044 2,509 2.40 9,329 3.61 0.3082
2018-07-20 2018-06-30 13F AMPHENOL CORP NEW CL A US SMALL AND MID-CAP EQUITIES 032095101 1,280 -103,255 123
2018-05-01 2018-03-31 13F AMPHENOL CORP NEW CL A US LARGE-CAP EQUITIES 032095101 104,535 4,159 4.14 9,004 2.17 0.3025
2018-02-07 2017-12-31 13F AMPHENOL CORP NEW CL A US LARGE-CAP EQUITIES 032095101 100,376 11,024 12.34 8,813 16.53 0.3074
2017-10-23 2017-09-30 13F AMPHENOL CORP NEW CL A US LARGE-CAP EQUITIES 032095101 89,352 86,792 3,390.31 7,563 3,901.59 0.2757
2017-07-20 2017-06-30 13F AMPHENOL CORP NEW CL A US LARGE-CAP EQUITIES 032095101 2,560 0 0.00 189 3.85 0.0073
2017-04-26 2017-03-31 13F AMPHENOL CORP US SMALL AND MID-CAP EQUITIES 032095101 2,560 0 0.00 182 5.81 0.0073
2017-01-18 2016-12-31 13F AMPHENOL CORP NEW CL A US SMALL AND MID-CAP EQUITIES 032095101 2,560 0 0.00 172 3.61 0.0073
2016-11-10 2016-09-30 13F AMPHENOL CORP NEW CL A US SMALL AND MID-CAP EQUITIES 032095101 2,560 0 0.00 166 12.93 0.0072
2016-07-28 2016-06-30 13F AMPHENOL CORP NEW CL A US SMALL AND MID-CAP EQUITIES 032095101 2,560 0 0.00 147 -0.68 0.0065
2016-04-28 2016-03-31 13F AMPHENOL CORP NEW CL A US SMALL AND MID-CAP EQUITIES 032095101 2,560 0 0.00 148 10.45 0.0065
2016-02-10 2015-12-31 13F AMPHENOL CORP NEW CL A US SMALL AND MID-CAP EQUITIES 032095101 2,560 0 0.00 134 3.08 0.0061
2015-11-12 2015-09-30 13F AMPHENOL CORP NEW CL A US SMALL AND MID-CAP EQUITIES 032095101 2,560 0 0.00 130 -12.16 0.0063
2015-08-13 2015-06-30 13F AMPHENOL CORP NEW CL A US SMALL AND MID-CAP EQUITIES 032095101 2,560 0 0.00 148 -1.99 0.0066
2015-05-05 2015-03-31 13F AMPHENOL CORP NEW CL A US SMALL AND MID-CAP EQUITIES 032095101 2,560 2,560 0.00 151 0.0069
2015-02-04 2014-12-31 13F AMPHENOL CORP NEW CL A US SMALL AND MID-CAP EQUITIES 032095101 0 -1,280 -100.00 0 -100.00
2014-11-07 2014-09-30 13F AMPHENOL CORP NEW CL A US SMALL AND MID-CAP EQUITIES 032095101 1,280 0 0.00 128 4.07 0.0062
2014-08-04 2014-06-30 13F AMPHENOL CORP NEW CL A US SMALL AND MID-CAP EQUITIES 032095101 1,280 0 0.00 123 5.13 0.0061
2014-05-01 2014-03-31 13F AMPHENOL CORP NEW CL A US SMALL AND MID-CAP EQUITIES 032095101 1,280 0 0.00 117 2.63 0.0060
2014-02-05 2013-12-31 13F AMPHENOL CORP NEW CL A US SMALL AND MID-CAP EQUITIES 032095101 1,280 -120 -8.57 114 5.56 0.0058
2013-11-18 2013-09-30 13F AMPHENOL CORP CL A 032095101 1,400 0 0.00 108 -0.92 0.0058
2013-08-14 2013-06-30 13F AMPHENOL CORP CL A 032095101 1,400 1,400 109 0.0061
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.