Amphenol Corporation
US ˙ NYSE ˙ US0320951017

SecurityAPH / Amphenol Corporation
InstitutionTexas Yale Capital Corp.
Latest Disclosed Ownership83,214 shares
Latest Disclosed Value $ 10,514,089
Texas Yale Capital Corp. reports 0.03% decrease in ownership of APH / Amphenol Corporation

On May 4, 2026 - Texas Yale Capital Corp. filed a 13F-HR form disclosing ownership of 83,214 shares of Amphenol Corporation (US:APH) valued at $10,514,089 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 83,236 shares of Amphenol Corporation. This represents a change in shares of -0.03% during the quarter. The current value of the position is $11,550,935 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)
2026-05-04 2026-03-31 13F AMPHENOL CL A 032095101 83,214 -22 -0.03 10,514 -6.53 0.2983
2026-02-10 2025-12-31 13F AMPHENOL CORP CL A 032095101 83,236 150 0.18 11,249 9.41 0.3410
2025-11-07 2025-09-30 13F AMPHENOL CORP CL A 032095101 83,086 -490 -0.59 10,282 24.57 0.3236
2025-08-06 2025-06-30 13F AMPHENOL CORP CL A 032095101 83,576 0 0.00 8,253 50.57 0.2703
2025-05-07 2025-03-31 13F AMPHENOL CORP CL A 032095101 83,576 -1,025 -1.21 5,482 -6.71 0.2251
2025-02-13 2024-12-31 13F AMPHENOL CORP CL A 032095101 84,601 687 0.82 5,876 7.46 0.2363
2024-11-12 2024-09-30 13F AMPHENOL CORP CL A 032095101 83,914 360 0.43 5,468 -2.88 0.2376
2024-08-13 2024-06-30 13F AMPHENOL CORP CL A 032095101 83,554 41,842 100.31 5,629 17.00 0.2680
2024-05-08 2024-03-31 13F AMPHENOL CORP CL A 032095101 41,712 -394 -0.94 4,811 15.29 0.2136
2024-02-13 2023-12-31 13F AMPHENOL CORP CL A 032095101 42,106 106 0.25 4,174 18.32 0.1988
2023-11-09 2023-09-30 13F AMPHENOL CORP CL A 032095101 42,000 0 0.00 3,528 -1.12 0.1590
2023-08-03 2023-06-30 13F AMPHENOL CORP CL A 032095101 42,000 0 0.00 3,568 3.93 0.1678
2023-05-10 2023-03-31 13F AMPHENOL CORP CL A 032095101 42,000 0 0.00 3,432 7.35 0.1744
2023-02-13 2022-12-31 13F AMPHENOL CORP CL A 032095101 42,000 0 0.00 3,198 13.69 0.1824
2022-11-08 2022-09-30 13F AMPHENOL CORP CL A 032095101 42,000 -256 -0.61 2,812 3.38 0.1802
2022-08-11 2022-06-30 13F AMPHENOL CORP CL A 032095101 42,256 0 0.00 2,720 -14.57 0.1758
2022-05-10 2022-03-31 13F AMPHENOL CORP CL A 032095101 42,256 0 0.00 3,184 -13.85 0.1736
2022-02-10 2021-12-31 13F AMPHENOL CORP CL A 032095101 42,256 0 0.00 3,696 19.46 0.1878
2021-11-08 2021-09-30 13F AMPHENOL CORP CL A 032095101 42,256 0 0.00 3,094 7.02 0.1754
2021-08-05 2021-06-30 13F AMPHENOL CORP CL A 032095101 42,256 0 0.00 2,891 3.69 0.1652
2021-05-12 2021-03-31 13F AMPHENOL CORP CL A 032095101 42,256 21,128 100.00 2,788 0.90 0.1751
2021-02-10 2020-12-31 13F AMPHENOL CORP CL A 032095101 21,128 0 0.00 2,763 20.76 0.1856
2020-11-10 2020-09-30 13F AMPHENOL CORP CL A 032095101 21,128 0 0.00 2,288 13.04 0.1755
2020-07-31 2020-06-30 13F AMPHENOL CORP CL A 032095101 21,128 0 0.00 2,024 31.43 0.1646
2020-05-13 2020-03-31 13F AMPHENOL CORP CL A 032095101 21,128 0 0.00 1,540 -32.66 0.1515
2020-02-11 2019-12-31 13F AMPHENOL CORP CL A 032095101 21,128 0 0.00 2,287 12.16 0.1568
2019-10-31 2019-09-30 13F AMPHENOL CORP CL A 032095101 21,128 0 0.00 2,039 0.59 0.1463
2019-07-24 2019-06-30 13F AMPHENOL CORP CL A 032095101 21,128 -21,128 -50.00 2,027 -49.20 0.1512
2019-05-10 2019-03-31 13F AMPHENOL CORP CL A 032095101 42,256 21,128 100.00 3,990 133.06 0.1596
2019-02-11 2018-12-31 13F AMPHENOL CORP CL A 032095101 21,128 0 0.00 1,712 -13.80 0.1545
2018-11-13 2018-09-30 13F AMPHENOL CORP CL A 032095101 21,128 0 0.00 1,986 7.88 0.1604
2018-08-07 2018-06-30 13F AMPHENOL CORP CL A 032095101 21,128 0 0.00 1,841 1.15 0.1581
2018-05-03 2018-03-31 13F AMPHENOL CORP CL A 032095101 21,128 0 0.00 1,820 -1.89 0.1567
2018-02-07 2017-12-31 13F AMPHENOL CORP CL A 032095101 21,128 0 0.00 1,855 3.75 0.1597
2017-11-08 2017-09-30 13F AMPHENOL CORP CL A 032095101 21,128 0 0.00 1,788 14.62 0.1544
2017-08-03 2017-06-30 13F AMPHENOL CORP CL A 032095101 21,128 0 0.00 1,560 3.72 0.1371
2017-05-03 2017-03-31 13F AMPHENOL CORP CL A 032095101 21,128 0 0.00 1,504 5.92 0.1326
2017-02-13 2016-12-31 13F AMPHENOL CORP CL A 032095101 21,128 0 0.00 1,420 3.50 0.1342
2016-11-14 2016-09-30 13F AMPHENOL CORP CL A 032095101 21,128 0 0.00 1,372 13.29 0.1319
2016-08-12 2016-06-30 13F AMPHENOL CORP CL A 032095101 21,128 0 0.00 1,211 -0.90 0.1204
2016-05-13 2016-03-31 13F AMPHENOL CORP CL A 032095101 21,128 0 0.00 1,222 10.69 0.1258
2016-05-10 2015-12-31 13F/A-1 AMPHENOL CORP CL A 032095101 21,128 0 0.00 1,104 2.51 0.0993
2016-02-05 2015-12-31 13F AMPHENOL CORP CL A 032095101 21,128 1,104
2016-05-10 2015-09-30 13F/A-1 AMPHENOL CORP CL A 032095101 21,128 0 0.00 1,077 -12.08 0.0985
2015-11-10 2015-09-30 13F AMPHENOL CORP CL A 032095101 21,128 1,077
2016-05-10 2015-06-30 13F/A-1 AMPHENOL CORP CL A 032095101 21,128 0 0.00 1,225 -1.61 0.1014
2015-07-30 2015-06-30 13F AMPHENOL CORP CL A 032095101 21,128 1,225
2016-05-10 2015-03-31 13F/A-1 AMPHENOL CORP CL A 032095101 21,128 10,416 97.24 1,245 116.15 0.0991
2015-04-16 2015-03-31 13F AMPHENOL CORP CL A 032095101 21,128 1,245
2015-02-12 2014-12-31 13F AMPHENOL CORP CL A 032095101 10,712 5,356 100.00 576 7.66 0.0498
2014-12-01 2014-09-30 13F/A-1 AMPHENOL CORP CL A 032095101 5,356 5,356 535 0.0503
2014-11-13 2014-09-30 13F AMPHENOL CORP CL A 032095101 5,356 535
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.