Amphenol Corporation
US ˙ NYSE ˙ US0320951017

SecurityAPH / Amphenol Corporation
InstitutionEdgestream Partners, L.P.
Latest Disclosed Ownership4,882 shares
Latest Disclosed Value $ 616,841
Edgestream Partners, L.P. reports 51.72% decrease in ownership of APH / Amphenol Corporation

On May 18, 2026 - Edgestream Partners, L.P. filed a 13F-HR form disclosing ownership of 4,882 shares of Amphenol Corporation (US:APH) valued at $616,841 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 10,111 shares of Amphenol Corporation. This represents a change in shares of -51.72% during the quarter. The current value of the position is $720,681 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)
2026-05-18 2026-03-31 13F AMPHENOL CL A 032095101 4,882 -5,229 -51.72 617 -54.90 0.0202
2026-02-13 2025-12-31 13F AMPHENOL CORP CL A 032095101 10,111 -1,709 -14.46 1,366 -6.57 0.0385
2025-11-12 2025-09-30 13F AMPHENOL CORP CL A 032095101 11,820 -3,775 -24.21 1,463 -5.06 0.0428
2025-08-13 2025-06-30 13F AMPHENOL CORP CL A 032095101 15,595 8,338 114.90 1,540 224.21 0.0428
2025-05-02 2025-03-31 13F AMPHENOL CORP CL A 032095101 7,257 -5,600 -43.56 476 -46.75 0.0162
2025-02-07 2024-12-31 13F AMPHENOL CORP CL A 032095101 12,857 -3,925 -23.39 893 -18.39 0.0380
2024-11-14 2024-09-30 13F AMPHENOL CORP CL A 032095101 16,782 16,782 1,094 0.0481
2023-08-10 2023-06-30 13F AMPHENOL CORP CL A 032095101 0 -73,056 -100.00 0 -100.00
2023-05-15 2023-03-31 13F AMPHENOL CORP CL A 032095101 73,056 41,286 129.95 5,970 146.90 0.6592
2023-02-13 2022-12-31 13F AMPHENOL CORP CL A 032095101 31,770 17,927 129.50 2,419 160.84 0.2720
2022-11-14 2022-09-30 13F AMPHENOL CORP CL A 032095101 13,843 -347,407 -96.17 927 -96.01 0.0717
2022-08-12 2022-06-30 13F AMPHENOL CORP CL A 032095101 361,250 248,459 220.28 23,257 173.64 1.8334
2022-05-13 2022-03-31 13F AMPHENOL CORP CL A 032095101 112,791 112,791 8,499 0.6767
2021-11-15 2021-09-30 13F AMPHENOL CORP CL A 032095101 0 -4,133 -100.00 0 -100.00
2021-08-10 2021-06-30 13F AMPHENOL CORP CL A 032095101 4,133 -12,311 -74.87 283 -73.92 0.0167
2021-05-06 2021-03-31 13F AMPHENOL CORP CL A 032095101 16,444 16,444 1,085 0.0606
2020-11-10 2020-09-30 13F AMPHENOL CORP CL A 032095101 0 -32,102 -100.00 0 -100.00
2020-08-11 2020-06-30 13F AMPHENOL CORP CL A 032095101 32,102 5,169 19.19 3,076 56.70 0.1617
2020-05-14 2020-03-31 13F AMPHENOL CORP CL A 032095101 26,933 26,933 1,963 0.1815
2019-11-08 2019-09-30 13F AMPHENOL CORP CL A 032095101 0 -62,350 -100.00 0 -100.00
2019-08-08 2019-06-30 13F AMPHENOL CORP CL A 032095101 62,350 62,350 5,982 0.6748
2019-05-15 2019-03-31 13F AMPHENOL CORP CL A 032095101 0 -27,958 -100.00 0 -100.00
2019-02-14 2018-12-31 13F AMPHENOL CORP CL A 032095101 27,958 25,396 991.26 2,265 839.83 0.3968
2018-11-07 2018-09-30 13F AMPHENOL CORP CL A 032095101 2,562 -2,966 -53.65 241 -50.00 0.0410
2018-08-09 2018-06-30 13F AMPHENOL CORP CL A 032095101 5,528 -5,568 -50.18 482 -49.58 0.0982
2018-05-15 2018-03-31 13F AMPHENOL CORP CL A 032095101 11,096 5,282 90.85 956 87.45 0.1876
2018-02-09 2017-12-31 13F AMPHENOL CORP CL A 032095101 5,814 894 18.17 510 22.60 0.6100
2017-10-30 2017-09-30 13F AMPHENOL CORP CL A 032095101 4,920 -1,210 -19.74 416 -8.17 0.2216
2017-08-10 2017-06-30 13F AMPHENOL CORP CL A 032095101 6,130 6,130 453 0.1708
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.