Amphenol Corporation
US ˙ NYSE ˙ US0320951017

SecurityAPH / Amphenol Corporation
InstitutionCWM Advisors, LLC
Latest Disclosed Ownership49,438 shares
Latest Disclosed Value $ 6,246,491
CWM Advisors, LLC reports 68.76% decrease in ownership of APH / Amphenol Corporation

On May 13, 2026 - CWM Advisors, LLC filed a 13F-HR/A form disclosing ownership of 49,438 shares of Amphenol Corporation (US:APH) valued at $6,246,491 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 158,263 shares of Amphenol Corporation. This represents a change in shares of -68.76% during the quarter. The current value of the position is $7,298,038 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)
2026-05-13 2026-03-31 13F/A-1 AMPHENOL CL A 032095101 49,438 -108,825 -68.76 6,246 -70.80 1.2531
2026-04-23 2026-03-31 13F AMPHENOL CL A 032095101 179,409 21,146 22,668 1.8656
2026-02-17 2025-12-31 13F AMPHENOL CORP CL A 032095101 158,263 11,989 8.20 21,388 18.15 1.9244
2025-10-15 2025-09-30 13F AMPHENOL CORP CL A 032095101 146,274 -3,184 -2.13 18,101 22.65 1.7619
2025-07-24 2025-06-30 13F AMPHENOL CORP CL A 032095101 149,458 6,377 4.46 14,759 57.27 1.6078
2025-06-03 2025-03-31 13F AMPHENOL CORP CL A 032095101 143,081 -11,433 -7.40 9,385 -12.54 1.1155
2025-01-17 2024-12-31 13F AMPHENOL CORP CL A 032095101 154,514 9,407 6.48 10,731 13.48 1.2009
2024-10-10 2024-09-30 13F AMPHENOL CORP CL A 032095101 145,107 2,871 2.02 9,455 -1.33 0.9673
2024-08-12 2024-06-30 13F AMPHENOL CORP CL A 032095101 142,236 58,284 69.43 9,582 -1.04 1.1044
2024-05-07 2024-03-31 13F AMPHENOL CORP CL A 032095101 83,952 3,769 4.70 9,684 21.83 0.9908
2024-02-12 2023-12-31 13F AMPHENOL CORP CL A 032095101 80,183 9,408 13.29 7,949 33.71 0.8742
2023-10-26 2023-09-30 13F AMPHENOL CORP CL A 032095101 70,775 -8,619 -10.86 5,944 -11.86 0.7590
2023-07-31 2023-06-30 13F AMPHENOL CORP CL A 032095101 79,394 3,555 4.69 6,745 8.83 0.8159
2023-04-24 2023-03-31 13F AMPHENOL CORP CL A 032095101 75,839 7,160 10.43 6,198 18.51 0.7887
2023-01-26 2022-12-31 13F AMPHENOL CORP CL A 032095101 68,679 1,889 2.83 5,229 16.93 0.6729
2022-11-07 2022-09-30 13F AMPHENOL CORP CL A 032095101 66,790 -2,726 -3.92 4,472 -0.07 0.6318
2022-08-10 2022-06-30 13F AMPHENOL CORP CL A 032095101 69,516 -3,189 -4.39 4,475 -18.31 0.5938
2022-04-21 2022-03-31 13F AMPHENOL CORP CL A 032095101 72,705 -5,869 -7.47 5,478 -20.29 0.6340
2022-02-14 2021-12-31 13F/A-1 AMPHENOL CORP CL A 032095101 78,574 8,358 11.90 6,872 33.64 0.7879
2022-02-03 2021-12-31 13F AMPHENOL CORP CL A 032095101 4,359 -65,857 381 0.1079
2021-11-09 2021-09-30 13F AMPHENOL CORP CL A 032095101 70,216 28,637 68.87 5,142 80.80 0.6499
2021-08-10 2021-06-30 13F AMPHENOL CORP CL A 032095101 41,579 3,614 9.52 2,844 13.53 0.3742
2021-04-30 2021-03-31 13F AMPHENOL CORP CL A 032095101 37,965 26,407 228.47 2,505 65.78 0.3841
2021-02-12 2020-12-31 13F AMPHENOL CORP CL A 032095101 11,558 1,890 19.55 1,511 44.32 0.3342
2020-11-16 2020-09-30 13F AMPHENOL CORP CL A 032095101 9,668 -2,404 -19.91 1,047 -9.51 0.2881
2020-08-12 2020-06-30 13F AMPHENOL CORP CL A 032095101 12,072 5,092 72.95 1,157 127.31 0.3996
2020-05-08 2020-03-31 13F AMPHENOL CORP CL A 032095101 6,980 -85 -1.20 509 -33.46 0.2033
2020-01-24 2019-12-31 13F AMPHENOL CORP CL A 032095101 7,065 -242 -3.31 765 8.51 0.2743
2019-11-13 2019-09-30 13F AMPHENOL CORP CL A 032095101 7,307 1,894 34.99 705 35.84 0.2688
2019-07-16 2019-06-30 13F AMPHENOL CORP CL A 032095101 5,413 834 18.21 519 20.14 0.2183
2019-05-16 2019-03-31 13F AMPHENOL CORP CL A 032095101 4,579 146 3.29 432 20.33 0.2006
2019-02-21 2018-12-31 13F/A-1 AMPHENOL CORP CL A 032095101 4,433 645 17.03 359 0.84 0.2414
2019-02-01 2018-12-31 13F AMPHENOL CORP CL A 032095101 4,433 664 359
2019-02-21 2018-09-30 13F/A-1 AMPHENOL CORP CL A 032095101 3,788 897 31.03 356 41.27 0.2194
2018-11-07 2018-09-30 13F AMPHENOL CORP CL A 032095101 3,769 903 354
2019-02-21 2018-06-30 13F/A-1 AMPHENOL CORP CL A 032095101 2,891 2,891 252 0.1791
2018-07-19 2018-06-30 13F AMPHENOL CORP CL A 032095101 2,866 2,866 250
2019-02-22 2018-03-31 13F/A-1 Amphenol CL A 032095101 0 -42 -100.00 0 -100.00
2019-02-21 2017-12-31 13F/A-1 AMPHENOL CORP CL A 032095101 42 42 4 0.0034
2018-02-15 2017-12-31 13F Amphenol CL A 032095101 42 4 0.0032
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.