Amphenol Corporation
US ˙ NYSE ˙ US0320951017

SecurityAPH / Amphenol Corporation
InstitutionAmbassador Advisors, LLC
Latest Disclosed Ownership116,345 shares
Latest Disclosed Value $ 3,569,274
Ambassador Advisors, LLC reports 639.26% increase in ownership of APH / Amphenol Corporation

On April 17, 2026 - Ambassador Advisors, LLC filed a 13F-HR form disclosing ownership of 116,345 shares of Amphenol Corporation (US:APH) valued at $14,700,191 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 15,738 shares of Amphenol Corporation. This represents a change in shares of 639.26% during the quarter. The current value of the position is $17,174,849 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)
2026-04-17 2026-03-31 13F AMPHENOL CL A 032095101 116,345 100,607 639.26 3,569 67.87 0.4344
2026-02-13 2025-12-31 13F AMPHENOL CORP CL A 032095101 15,738 -4,512 -22.28 2,127 -15.13 0.3118
2025-11-19 2025-09-30 13F AMPHENOL CORP CL A 032095101 20,250 -3,743 -15.60 2,506 5.74 0.3726
2025-08-14 2025-06-30 13F AMPHENOL CORP CL A 032095101 23,993 -114 -0.47 2,369 49.84 0.3677
2025-05-16 2025-03-31 13F AMPHENOL CORP CL A 032095101 24,107 -1,782 -6.88 1,581 -12.02 0.2753
2025-02-13 2024-12-31 13F AMPHENOL CORP CL A 032095101 25,889 1,655 6.83 1,798 13.81 0.3061
2024-11-14 2024-09-30 13F AMPHENOL CORP CL A 032095101 24,234 -1,977 -7.54 1,579 -10.54 0.2747
2024-08-14 2024-06-30 13F AMPHENOL CORP CL A 032095101 26,211 13,093 99.81 1,766 16.66 0.3193
2024-05-15 2024-03-31 13F AMPHENOL CORP CL A 032095101 13,118 2,763 26.68 1,513 41.93 0.2747
2024-02-15 2023-12-31 13F AMPHENOL CORP CL A 032095101 10,355 1,585 18.07 1,066 40.82 0.2367
2023-11-15 2023-09-30 13F AMPHENOL CORP CL A 032095101 8,770 2,678 43.96 757 42.56 0.1845
2023-08-15 2023-06-30 13F AMPHENOL CORP CL A 032095101 6,092 6,092 531 0.1226
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.