Amphenol Corporation
US ˙ NYSE ˙ US0320951017

SecurityAPH / Amphenol Corporation
InstitutionFlagship Harbor Advisors, Llc
Latest Disclosed Ownership7,587 shares
Latest Disclosed Value $ 958,619
Flagship Harbor Advisors, Llc reports 1.61% decrease in ownership of APH / Amphenol Corporation

On April 28, 2026 - Flagship Harbor Advisors, Llc filed a 13F-HR form disclosing ownership of 7,587 shares of Amphenol Corporation (US:APH) valued at $958,617 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 21, 2026 disclosing 7,711 shares of Amphenol Corporation. This represents a change in shares of -1.61% during the quarter. The current value of the position is $1,113,544 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.

Upgrade to unlock premium data and export to Excel .

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 CL A 032095101 7,587 -124 -1.61 959 -8.06 0.0422
2026-01-21 2025-12-31 13F AMPHENOL Common Stock 032095101 7,711 -760 -8.97 1,042 -0.57 0.0492
2025-11-05 2025-09-30 13F AMPHENOL CORP CL A 032095101 8,471 348 4.28 1,048 30.67 0.0456
2025-08-04 2025-06-30 13F AMPHENOL CORP CL A 032095101 8,123 -1,100 -11.93 802 32.78 0.0380
2025-04-22 2025-03-31 13F AMPHENOL CORP CL A 032095101 9,223 106 1.16 605 -4.58 0.0318
2025-01-21 2024-12-31 13F AMPHENOL CORP CL A 032095101 9,117 5,606 159.67 633 177.63 0.0333
2024-10-21 2024-09-30 13F AMPHENOL CORP CL A 032095101 3,511 4 0.11 229 -3.39 0.0126
2025-12-02 2024-06-30 13F AMPHENOL CORP CL A 032095101 3,507 1,756 100.29 236 16.83 0.0142
2024-04-16 2024-03-31 13F AMPHENOL CORP CL A 032095101 1,751 1,751 202 0.0130
2021-02-08 2020-12-31 13F AMPHENOL Common Stock 032095101 0 -851 -100.00 0 -100.00
2020-10-13 2020-09-30 13F AMPHENOL Common Stock 032095101 851 374 78.41 92 104.44 0.0124
2020-07-31 2020-06-30 13F AMPHENOL Common Stock 032095101 477 68 16.63 45 50.00 0.0066
2020-05-12 2020-03-31 13F AMPHENOL Common Stock 032095101 409 0 0.00 30 -31.82 0.0060
2020-02-14 2019-12-31 13F AMPHENOL Common Stock 032095101 409 1 0.25 44 12.82 0.0077
2019-10-22 2019-09-30 13F AMPHENOL Common Stock 032095101 408 -110 -21.24 39 -20.41 0.0076
2019-07-22 2019-06-30 13F AMPHENOL Common Stock 032095101 518 131 33.85 49 36.11 0.0102
2019-04-15 2019-03-31 13F AMPHENOL Common Stock 032095101 387 0 0.00 36 16.13 0.0074
2019-01-26 2018-12-31 13F AMPHENOL COM 032095101 387 -253 -39.53 31 -49.18 0.0075
2018-11-05 2018-09-30 13F AMPHENOL Common Stock 032095101 640 0 0.00 61 10.91 0.0113
2018-08-14 2018-06-30 13F AMPHENOL Common Stock 032095101 640 640 55 0.0110
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.