Amphenol Corporation
US ˙ NYSE ˙ US0320951017

SecurityAPH / Amphenol Corporation
InstitutionMcGowan Group Asset Management, Inc.
Latest Disclosed Ownership9,667 shares
Latest Disclosed Value $ 1,221,435
McGowan Group Asset Management, Inc. reports 0.02% increase in ownership of APH / Amphenol Corporation

On May 11, 2026 - McGowan Group Asset Management, Inc. filed a 13F-HR form disclosing ownership of 9,667 shares of Amphenol Corporation (US:APH) valued at $1,221,425 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 9,665 shares of Amphenol Corporation. This represents a change in shares of 0.02% during the quarter. The current value of the position is $1,341,876 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)
2026-05-11 2026-03-31 13F AMPHENOL CORP CL A Stock 032095101 9,667 2 0.02 1,221 -6.51 0.1555
2026-01-29 2025-12-31 13F AMPHENOL CORP NEW CL A CL A 032095101 9,665 2 0.02 1,306 9.29 0.1620
2025-11-13 2025-09-30 13F AMPHENOL CORP NEW CL A CL A 032095101 9,663 -232 -2.34 1,196 22.31 0.1483
2025-08-13 2025-06-30 13F AMPHENOL CORP NEW CL A CL A 032095101 9,895 -81 -0.81 977 49.39 0.1231
2025-05-15 2025-03-31 13F AMPHENOL CORP NEW CL A CL A 032095101 9,976 3 0.03 654 -5.49 0.0865
2025-02-14 2024-12-31 13F AMPHENOL CORP NEW CL A CL A 032095101 9,973 6 0.06 693 6.63 0.0927
2024-11-12 2024-09-30 13F AMPHENOL CORP NEW CL A CL A 032095101 9,967 1 0.01 650 -3.28 0.0856
2024-08-14 2024-06-30 13F AMPHENOL CORP NEW CL A CL A 032095101 9,966 2,542 34.24 671 -21.61 0.0935
2024-05-15 2024-03-31 13F AMPHENOL CORP NEW CL A CL A 032095101 7,424 3 0.04 856 16.46 0.1235
2024-02-13 2023-12-31 13F AMPHENOL CORP NEW CL A CL A 032095101 7,421 3 0.04 736 17.98 0.1182
2023-11-13 2023-09-30 13F AMPHENOL CORP NEW CL A CL A 032095101 7,418 3 0.04 623 -0.95 0.0984
2023-08-10 2023-06-30 13F AMPHENOL CORP NEW CL A CL A 032095101 7,415 3 0.04 630 3.97 0.0982
2023-05-15 2023-03-31 13F AMPHENOL CORP NEW CL A CL A 032095101 7,412 3 0.04 606 7.27 0.0961
2023-02-13 2022-12-31 13F AMPHENOL CORP NEW CL A CL A 032095101 7,409 3 0.04 564 13.71 0.0898
2022-11-09 2022-09-30 13F AMPHENOL CORP NEW CL A CL A 032095101 7,406 -57 -0.76 496 3.33 0.0860
2022-08-11 2022-06-30 13F AMPHENOL CORP NEW CL A CL A 032095101 7,463 3 0.04 480 -14.59 0.0804
2022-05-13 2022-03-31 13F AMPHENOL CORP NEW CL A CL A 032095101 7,460 1,832 32.55 562 14.23 0.0864
2022-02-14 2021-12-31 13F AMPHENOL CORP NEW CL A CL A 032095101 5,628 1 0.02 492 19.42 0.0865
2021-11-15 2021-09-30 13F AMPHENOL CORP NEW CL A CL A 032095101 5,627 1 0.02 412 7.01 0.0701
2021-08-11 2021-06-30 13F AMPHENOL CORP NEW CL A CL A 032095101 5,626 1 0.02 385 3.77 0.0605
2021-05-17 2021-03-31 13F AMPHENOL CORP NEW CL A CL A 032095101 5,625 1,901 51.05 371 -23.82 0.0606
2021-02-10 2020-12-31 13F AMPHENOL CORP NEW CL A CL A 032095101 3,724 1 0.03 487 20.84 0.0832
2020-11-12 2020-09-30 13F AMPHENOL CORP NEW CL A CL A 032095101 3,723 9 0.24 403 13.20 0.0764
2020-08-11 2020-06-30 13F AMPHENOL CORP NEW CL A CL A 032095101 3,714 13 0.35 356 31.85 0.0663
2020-05-18 2020-03-31 13F AMPHENOL CORP NEW CL A CL A 032095101 3,701 -16 -0.43 270 -32.84 0.0592
2020-02-13 2019-12-31 13F AMPHENOL CORP NEW CL A CL A 032095101 3,717 -30 -0.80 402 11.05 0.0684
2019-11-14 2019-09-30 13F AMPHENOL CORP NEW CL A CL A 032095101 3,747 0 0.00 362 0.84 0.0582
2019-08-14 2019-06-30 13F AMPHENOL CORP NEW CL A CL A 032095101 3,747 32 0.86 359 2.28 0.0563
2019-05-15 2019-03-31 13F AMPHENOL CORP NEW CL A CL A 032095101 3,715 3,715 351 0.0560
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.