Amphenol Corporation
US ˙ NYSE ˙ US0320951017

SecurityAPH / Amphenol Corporation
InstitutionUs Bancorp \de\
Latest Disclosed Ownership609,299 shares
Latest Disclosed Value $ 76,984,941
Us Bancorp \de\ reports 3.49% decrease in ownership of APH / Amphenol Corporation

On May 14, 2026 - Us Bancorp \de\ filed a 13F-HR form disclosing ownership of 609,299 shares of Amphenol Corporation (US:APH) valued at $76,984,929 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 30, 2026 disclosing 631,325 shares of Amphenol Corporation. This represents a change in shares of -3.49% during the quarter. The current value of the position is $89,944,718 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)
2026-05-14 2026-03-31 13F AMPHENOL CL A 032095101 609,299 -22,026 -3.49 76,985 -9.77 0.0288
2026-01-30 2025-12-31 13F AMPHENOL CORP CL A 032095101 631,325 -14,615 -2.26 85,317 6.73 0.1000
2025-11-12 2025-09-30 13F AMPHENOL CORP CL A 032095101 645,940 -80,414 -11.07 79,935 11.44 0.0947
2025-07-24 2025-06-30 13F AMPHENOL CORP CL A 032095101 726,354 5,674 0.79 71,728 51.74 0.0903
2025-05-08 2025-03-31 13F AMPHENOL CORP CL A 032095101 720,680 -13,418 -1.83 47,270 -7.28 0.0632
2025-02-05 2024-12-31 13F AMPHENOL CORP CL A 032095101 734,098 -7,520 -1.01 50,983 5.50 0.0668
2024-10-28 2024-09-30 13F AMPHENOL CORP CL A 032095101 741,618 -4,986 -0.67 48,324 -3.93 0.0621
2024-08-07 2024-06-30 13F AMPHENOL CORP CL A 032095101 746,604 368,607 97.52 50,299 15.36 0.0686
2024-05-08 2024-03-31 13F AMPHENOL CORP CL A 032095101 377,997 -2,573 -0.68 43,603 15.58 0.0608
2024-02-09 2023-12-31 13F AMPHENOL CORP CL A 032095101 380,570 192 0.05 37,727 18.09 0.0558
2023-11-03 2023-09-30 13F AMPHENOL CORP CL A 032095101 380,378 -14,301 -3.62 31,949 -4.71 0.0522
2023-08-10 2023-06-30 13F AMPHENOL CORP CL A 032095101 394,679 -30,721 -7.22 33,528 -3.56 0.0540
2023-05-09 2023-03-31 13F AMPHENOL CORP CL A COMMON STOCK 032095101 425,400 -26,764 -5.92 34,764 0.96 0.0587
2023-02-13 2022-12-31 13F AMPHENOL CORP CL A COMMON STOCK 032095101 452,164 -16,950 -3.61 34,433 9.61 0.0610
2022-10-27 2022-09-30 13F AMPHENOL CORP CL A COMMON STOCK 032095101 469,114 -5,027 -1.06 31,413 2.91 0.0648
2022-08-01 2022-06-30 13F AMPHENOL CORP CL A COMMON STOCK 032095101 474,141 3,825 0.81 30,525 -13.86 0.0592
2022-05-11 2022-03-31 13F AMPHENOL CORP CL A COMMON STOCK 032095101 470,316 42,005 9.81 35,438 -5.40 0.0590
2022-02-11 2021-12-31 13F AMPHENOL COMMON STOCK 032095101 428,311 -1,946 -0.45 37,461 18.89 0.0591
2021-11-10 2021-09-30 13F AMPHENOL CORP CL A COMMON STOCK 032095101 430,257 -1,566 -0.36 31,508 6.66 0.0593
2021-08-05 2021-06-30 13F AMPHENOL COMMON STOCK 032095101 431,823 -9,985 -2.26 29,541 1.36 0.0553
2021-04-28 2021-03-31 13F AMPHENOL COMMON STOCK 032095101 441,808 223,365 102.25 29,146 2.03 0.0589
2021-02-04 2020-12-31 13F AMPHENOL COMMON STOCK 032095101 218,443 1,594 0.74 28,567 21.68 0.0615
2020-11-10 2020-09-30 13F AMPHENOL COMMON STOCK 032095101 216,849 -18,909 -8.02 23,478 3.94 0.0573
2020-08-07 2020-06-30 13F AMPHENOL COMMON STOCK 032095101 235,758 5,376 2.33 22,588 34.54 0.0593
2020-05-13 2020-03-31 13F AMPHENOL COMMON STOCK 032095101 230,382 -11,608 -4.80 16,789 -35.90 0.0524
2020-02-04 2019-12-31 13F AMPHENOL COMMON STOCK 032095101 241,990 -3,772 -1.53 26,192 10.45 0.0670
2019-11-08 2019-09-30 13F AMPHENOL COMMON STOCK 032095101 245,762 -11,326 -4.41 23,714 -3.86 0.0646
2019-08-13 2019-06-30 13F AMPHENOL COMMON STOCK 032095101 257,088 7,036 2.81 24,666 4.45 0.0687
2019-05-08 2019-03-31 13F AMPHENOL COMMON STOCK 032095101 250,052 10,617 4.43 23,614 21.73 0.0682
2019-02-13 2018-12-31 13F AMPHENOL COMMON STOCK 032095101 239,435 -12,030 -4.78 19,399 -17.95 0.0626
2018-10-31 2018-09-30 13F AMPHENOL COMMON STOCK 032095101 251,465 -4,215 -1.65 23,642 6.10 0.0684
2018-08-08 2018-06-30 13F AMPHENOL COMMON STOCK 032095101 255,680 -2,287 -0.89 22,283 0.29 0.0683
2018-05-08 2018-03-31 13F AMPHENOL COMMON STOCK 032095101 257,967 -5,675 -2.15 22,219 -4.01 0.0682
2018-02-02 2017-12-31 13F AMPHENOL COMMON STOCK 032095101 263,642 -5,580 -2.07 23,148 1.59 0.0708
2017-11-13 2017-09-30 13F AMPHENOL COMMON STOCK 032095101 269,222 -9,540 -3.42 22,786 10.72 0.0730
2017-07-19 2017-06-30 13F AMPHENOL COMMON STOCK 032095101 278,762 -169 -0.06 20,579 3.67 0.0687
2017-05-03 2017-03-31 13F AMPHENOL COMMON STOCK 032095101 278,931 -8,220 -2.86 19,851 2.87 0.0680
2017-02-08 2016-12-31 13F AMPHENOL COMMON STOCK 032095101 287,151 5,021 1.78 19,297 5.35 0.0694
2016-11-04 2016-09-30 13F AMPHENOL COMMON STOCK 032095101 282,130 5,712 2.07 18,317 15.59 0.0679
2016-08-10 2016-06-30 13F AMPHENOL CORP CL A COMMON STOCK 032095101 276,418 30,741 12.51 15,847 11.56 0.0603
2016-05-13 2016-03-31 13F AMPHENOL CORP CL A COMMON STOCK 032095101 245,677 -23,439 -8.71 14,205 1.06 0.0558
2016-02-10 2015-12-31 13F AMPHENOL CORP CL A COMMON STOCK 032095101 269,116 -21,940 -7.54 14,056 -5.23 0.0565
2015-11-16 2015-09-30 13F AMPHENOL CORP CL A COMMON STOCK 032095101 291,056 -26,619 -8.38 14,832 -19.46 0.0622
2015-08-10 2015-06-30 13F AMPHENOL CORP CL A COMMON STOCK 032095101 317,675 -4,103 -1.28 18,416 -2.88 0.0714
2015-05-08 2015-03-31 13F AMPHENOL CORP CL A COMMON STOCK 032095101 321,778 4,668 1.47 18,962 11.12 0.0729
2015-02-13 2014-12-31 13F AMPHENOL CORP CL A COMMON STOCK 032095101 317,110 150,754 90.62 17,064 2.71 0.0660
2014-11-14 2014-09-30 13F AMPHENOL CORP CL A COMMON STOCK 032095101 166,356 -10,385 -5.88 16,613 -2.43 0.0673
2014-08-14 2014-06-30 13F AMPHENOL CORP CL A COMMON STOCK 032095101 176,741 -4,897 -2.70 17,027 2.28 0.0679
2014-05-14 2014-03-31 13F AMPHENOL CORP CL A COMMON STOCK 032095101 181,638 -4,241 -2.28 16,647 0.43 0.0682
2014-02-13 2013-12-31 13F AMPHENOL CORP CL A COMMON STOCK 032095101 185,879 -5,162 -2.70 16,576 12.13 0.0672
2013-11-07 2013-09-30 13F AMPHENOL CORP CL A COMMON STOCK 032095101 191,041 -11,287 -5.58 14,783 -6.25 0.0653
2013-08-09 2013-06-30 13F AMPHENOL CORP CL A COMMON STOCK 032095101 202,328 202,328 15,769 0.0719
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.