Amphenol Corporation
US ˙ NYSE ˙ US0320951017

SecurityAPH / Amphenol Corporation
InstitutionHarding Loevner Lp
Latest Disclosed Ownership892,714 shares
Latest Disclosed Value $ 112,812,789
Harding Loevner Lp reports 6.46% decrease in ownership of APH / Amphenol Corporation

On May 15, 2026 - Harding Loevner Lp filed a 13F-HR form disclosing ownership of 892,714 shares of Amphenol Corporation (US:APH) valued at $112,794,414 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 954,359 shares of Amphenol Corporation. This represents a change in shares of -6.46% during the quarter. The current value of the position is $131,782,441 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)
2026-05-15 2026-03-31 13F AMPHENOL CL A 032095101 892,714 -61,645 -6.46 112,813 -12.54 1.1607
2026-02-17 2025-12-31 13F AMPHENOL CORP CL A 032095101 954,359 -297,555 -23.77 128,986 -16.74 1.1349
2025-11-14 2025-09-30 13F AMPHENOL CORP CL A 032095101 1,251,914 -191,563 -13.27 154,926 8.68 1.1365
2025-08-14 2025-06-30 13F AMPHENOL CORP CL A 032095101 1,443,477 27,036 1.91 142,552 53.42 0.9590
2025-05-15 2025-03-31 13F AMPHENOL CORP CL A 032095101 1,416,441 1,416,441 92,916 0.7115
2023-02-14 2022-12-31 13F AMPHENOL CORP CL A 032095101 0 -288 -100.00 0 -100.00
2022-11-14 2022-09-30 13F AMPHENOL CORP CL A 032095101 288 0 0.00 19 0.00 0.0001
2022-08-15 2022-06-30 13F AMPHENOL CORP CL A 032095101 288 0 0.00 19 -5.00 0.0001
2022-05-16 2022-03-31 13F AMPHENOL CORP CL A 032095101 288 0 0.00 20 -20.00 0.0001
2022-02-14 2021-12-31 13F AMPHENOL CORP CL A 032095101 288 0 0.00 25 19.05 0.0001
2021-11-15 2021-09-30 13F AMPHENOL CORP CL A 032095101 288 0 0.00 21 5.00 0.0001
2021-08-16 2021-06-30 13F AMPHENOL CORP CL A 032095101 288 0 0.00 20 5.26 0.0001
2021-05-17 2021-03-31 13F AMPHENOL CORP CL A 032095101 288 144 100.00 19 0.00 0.0001
2021-02-16 2020-12-31 13F AMPHENOL CORP CL A 032095101 144 0 0.00 19 18.75 0.0001
2020-11-16 2020-09-30 13F AMPHENOL CORP CL A 032095101 144 0 0.00 16 14.29 0.0001
2020-08-14 2020-06-30 13F AMPHENOL CORP CL A 032095101 144 0 0.00 14 40.00 0.0001
2020-05-15 2020-03-31 13F AMPHENOL CORP CL A 032095101 144 -556 -79.43 10 -86.84 0.0001
2020-02-14 2019-12-31 13F AMPHENOL CORP CL A 032095101 700 0 0.00 76 11.76 0.0003
2019-11-14 2019-09-30 13F AMPHENOL CORP CL A 032095101 700 0 0.00 68 1.49 0.0003
2019-08-14 2019-06-30 13F AMPHENOL CORP CL A 032095101 700 0 0.00 67 1.52 0.0003
2019-05-15 2019-03-31 13F AMPHENOL CORP CL A 032095101 700 0 0.00 66 15.79 0.0003
2019-02-14 2018-12-31 13F AMPHENOL CORP CL A 032095101 700 0 0.00 57 -13.64 0.0003
2018-11-14 2018-09-30 13F AMPHENOL CORP CL A 032095101 700 0 0.00 66 8.20 0.0003
2018-08-14 2018-06-30 13F AMPHENOL CORP CL A 032095101 700 0 0.00 61 1.67 0.0003
2018-05-14 2018-03-31 13F AMPHENOL CORP CL A 032095101 700 0 0.00 60 -1.64 0.0003
2018-02-12 2017-12-31 13F AMPHENOL CORP CL A 032095101 700 0 0.00 61 3.39 0.0003
2017-11-14 2017-09-30 13F/A-1 AMPHENOL CORP CL A 032095101 700 0 0.00 59 13.46 0.0003
2017-08-11 2017-06-30 13F AMPHENOL CORP CL A 032095101 700 700 52 0.0003
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.