Amphenol Corporation
US ˙ NYSE ˙ US0320951017

SecurityAPH / Amphenol Corporation
InstitutionHm Payson & Co
Latest Disclosed Ownership65,900 shares
Latest Disclosed Value $ 8,326,519
Hm Payson & Co reports 748.90% increase in ownership of APH / Amphenol Corporation

On April 13, 2026 - Hm Payson & Co filed a 13F-HR form disclosing ownership of 65,900 shares of Amphenol Corporation (US:APH) valued at $8,326,465 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 7,763 shares of Amphenol Corporation. This represents a change in shares of 748.90% during the quarter. The current value of the position is $9,728,158 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)
2026-04-13 2026-03-31 13F AMPHENOL CL A 032095101 65,900 58,137 748.90 8,327 693.71 0.0624
2026-02-12 2025-12-31 13F AMPHENOL CORP CL A 032095101 7,763 11 0.14 1,049 9.38 0.0148
2025-10-17 2025-09-30 13F AMPHENOL CORP CL A 032095101 7,752 -502 -6.08 959 17.67 0.0138
2025-10-17 2025-06-30 13F AMPHENOL CORP CL A 032095101 8,254 -1,484 -15.24 815 27.74 0.0129
2025-04-29 2025-03-31 13F AMPHENOL CORP CL A 032095101 9,738 -24 -0.25 639 -5.76 0.0112
2025-02-07 2024-12-31 13F AMPHENOL CORP CL A 032095101 9,762 0 0.00 678 6.45 0.0115
2024-10-28 2024-09-30 13F AMPHENOL CORP CL A 032095101 9,762 24 0.25 636 -3.05 0.0109
2024-08-13 2024-06-30 13F AMPHENOL CORP CL A 032095101 9,738 4,869 100.00 656 16.93 0.0119
2024-06-20 2024-03-31 13F AMPHENOL CORP CL A 032095101 4,869 307 6.73 562 24.12 0.0104
2024-02-13 2023-12-31 13F AMPHENOL CORP CL A 032095101 4,562 0 0.00 452 18.02 0.0094
2023-11-06 2023-09-30 13F AMPHENOL CORP CL A 032095101 4,562 0 0.00 383 -1.03 0.0090
2023-07-17 2023-06-30 13F AMPHENOL CORP CL A 032095101 4,562 0 0.00 388 4.03 0.0087
2023-04-18 2023-03-31 13F AMPHENOL CORP CL A 032095101 4,562 -18 -0.39 373 6.90 0.0089
2023-02-06 2022-12-31 13F AMPHENOL CORP CL A 032095101 4,580 18 0.39 349 14.10 0.0087
2022-10-25 2022-09-30 13F AMPHENOL CORP CL A 032095101 4,562 -10 -0.22 305 3.74 0.0084
2022-08-15 2022-06-30 13F AMPHENOL CORP CL A 032095101 4,572 0 0.00 294 -14.78 0.0075
2022-05-12 2022-03-31 13F AMPHENOL CORP CL A 032095101 4,572 -38 -0.82 345 -14.39 0.0079
2022-02-15 2021-12-31 13F AMPHENOL CORP CL A 032095101 4,610 0 0.00 403 19.23 0.0088
2021-11-30 2021-09-30 13F AMPHENOL CORP CL A 032095101 4,610 0 0.00 338 7.30 0.0082
2021-08-17 2021-06-30 13F AMPHENOL CORP CL A 032095101 4,610 -76 -1.62 315 1.94 0.0077
2021-06-15 2021-03-31 13F AMPHENOL CORP CL A 032095101 4,686 2,386 103.74 309 2.66 0.0082
2021-03-10 2020-12-31 13F AMPHENOL CORP CL A 032095101 2,300 -196 -7.85 301 11.48 0.0083
2020-12-21 2020-09-30 13F AMPHENOL CORP CL A 032095101 2,496 215 9.43 270 23.29 0.0083
2020-08-13 2020-06-30 13F AMPHENOL CORP CL A 032095101 2,281 -400 -14.92 219 12.31 0.0073
2020-07-01 2020-03-31 13F AMPHENOL CORP CL A 032095101 2,681 84 3.23 195 -30.60 0.0077
2020-02-18 2019-12-31 13F AMPHENOL CORP CL A 032095101 2,597 0 0.00 281 11.95 0.0090
2019-11-12 2019-09-30 13F AMPHENOL CORP CL A 032095101 2,597 50 1.96 251 2.87 0.0088
2019-08-15 2019-06-30 13F AMPHENOL CORP CL A 032095101 2,547 2,547 244 0.0088
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.