Amphenol Corporation
US ˙ NYSE ˙ US0320951017

SecurityAPH / Amphenol Corporation
InstitutionSwedbank AB
Latest Disclosed Ownership3,240,447 shares
Latest Disclosed Value $ 409,430,477
Swedbank AB reports 22.38% decrease in ownership of APH / Amphenol Corporation

On April 29, 2026 - Swedbank AB filed a 13F-HR form disclosing ownership of 3,240,447 shares of Amphenol Corporation (US:APH) valued at $409,430,478 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on February 9, 2026 disclosing 4,174,490 shares of Amphenol Corporation. This represents a change in shares of -22.38% during the quarter. The current value of the position is $478,354,786 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)
2026-04-29 2026-03-31 13F AMPHENOL CL A 032095101 3,240,447 -934,043 -22.38 409,430 -27.42 0.2418
2026-02-09 2025-12-31 13F/A-1 AMPHENOL CORP CL A 032095101 4,174,490 -439,722 -9.53 564,141 -1.20 0.5457
2026-02-03 2025-12-31 13F AMPHENOL CORP CL A 032095101 4,174,490 -439,722 564,141 0.3067
2025-10-15 2025-09-30 13F AMPHENOL CORP CL A 032095101 4,614,212 -318,997 -6.47 571,009 17.21 0.5788
2025-07-10 2025-06-30 13F AMPHENOL CORP CL A 032095101 4,933,209 184,957 3.90 487,154 56.42 0.5476
2025-04-14 2025-03-31 13F AMPHENOL CORP CL A 032095101 4,748,252 448,000 10.42 311,438 4.28 0.4146
2025-01-22 2024-12-31 13F AMPHENOL CORP CL A 032095101 4,300,252 700,000 19.44 298,653 27.31 0.3672
2024-10-11 2024-09-30 13F AMPHENOL CORP COM 032095101 3,600,252 1,000,000 38.46 234,592 33.92 0.2996
2024-07-11 2024-06-30 13F AMPHENOL CORP COM 032095101 2,600,252 1,550,126 147.61 175,179 144,675.21 0.2342
2024-05-13 2024-03-31 13F AMPHENOL COM 032095101 1,050,126 250,000 31.25 121 -99.85 0.2040
2024-12-06 2023-12-31 13F AMPHENOL CORP CL A 032095101 800,126 -150,000 -15.79 79,316 -0.61 0.1277
2024-12-06 2023-09-30 13F AMPHENOL CORP CL A 032095101 950,126 -580,000 -37.91 79,801 -38.61 0.1382
2024-12-06 2023-06-30 13F AMPHENOL CORP CL A 032095101 1,530,126 480,000 45.71 129,984 51.47 0.2204
2024-12-06 2023-03-31 13F AMPHENOL CORP CL A 032095101 1,050,126 1,050,126 85,816 0.1692
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.