Amphenol Corporation
US ˙ NYSE ˙ US0320951017

SecurityAPH / Amphenol Corporation
InstitutionCommonwealth Equity Services, Llc
Latest Disclosed Ownership124,828 shares
Latest Disclosed Value $ 16,869,236
Commonwealth Equity Services, Llc reports 7.36% decrease in ownership of APH / Amphenol Corporation

On February 12, 2026 - Commonwealth Equity Services, Llc filed a 13F-HR form disclosing ownership of 124,828 shares of Amphenol Corporation (US:APH) valued at $16,869,256 USD as of December 31, 2025. The entity filed a previous 13F-HR on October 22, 2025 disclosing 134,742 shares of Amphenol Corporation. This represents a change in shares of -7.36% during the quarter. The current value of the position is $18,427,109 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)
2026-02-12 2025-12-31 13F AMPHENOL CORP CL A 032095101 124,828 -9,914 -7.36 16,869 105,331.25 0.0225
2025-10-22 2025-09-30 13F AMPHENOL CORP CL A 032095101 134,742 12,277 10.02 17 33.33 0.0216
2025-08-06 2025-06-30 13F AMPHENOL CORP CL A 032095101 122,465 16,979 16.10 12 100.00 0.0160
2025-05-09 2025-03-31 13F AMPHENOL CORP CL A 032095101 105,486 21,985 26.33 7 20.00 0.0098
2025-02-10 2024-12-31 13F AMPHENOL CORP CL A 032095101 83,501 13,270 18.89 6 25.00 0.0085
2024-10-18 2024-09-30 13F AMPHENOL CORP CL A 032095101 70,231 6,451 10.11 5 0.00 0.0069
2024-07-31 2024-06-30 13F AMPHENOL CORP CL A 032095101 63,780 31,709 98.87 4 33.33 0.0068
2024-04-29 2024-03-31 13F AMPHENOL CORP CL A 032095101 32,071 51 0.16 4 0.00 0.0061
2024-02-06 2023-12-31 13F AMPHENOL CORP CL A 032095101 32,020 3,963 14.12 3 50.00 0.0058
2023-10-23 2023-09-30 13F AMPHENOL CORP CL A 032095101 28,057 340 1.23 2 0.00 0.0049
2023-08-10 2023-06-30 13F AMPHENOL CORP CL A 032095101 27,717 -1,181 -4.09 2 0.00 0.0048
2023-05-11 2023-03-31 13F AMPHENOL CORP CL A 032095101 28,898 1,624 5.95 2 0.00 0.0050
2023-02-07 2022-12-31 13F AMPHENOL CORP CL A 032095101 27,274 11,720 75.35 2 -99.81 0.0050
2022-11-14 2022-09-30 13F AMPHENOL CORP CL A 032095101 15,554 1,065 7.35 1,041 11.70 0.0027
2022-07-19 2022-06-30 13F AMPHENOL CORP CL A 032095101 14,489 1,453 11.15 932 -5.09 0.0024
2022-05-04 2022-03-31 13F AMPHENOL CORP CL A 032095101 13,036 -156 -1.18 982 -14.83 0.0022
2022-01-31 2021-12-31 13F AMPHENOL CORP CL A 032095101 13,192 -150 -1.12 1,153 18.01 0.0026
2021-10-29 2021-09-30 13F AMPHENOL CORP CL A 032095101 13,342 -351 -2.56 977 4.38 0.0025
2021-08-11 2021-06-30 13F AMPHENOL CORP CL A 032095101 13,693 -4,749 -25.75 936 -23.03 0.0024
2021-05-04 2021-03-31 13F AMPHENOL CORP CL A 032095101 18,442 11,820 178.50 1,216 40.42 0.0034
2021-02-11 2020-12-31 13F AMPHENOL CORP CL A 032095101 6,622 276 4.35 866 26.06 0.0026
2020-11-05 2020-09-30 13F AMPHENOL CORP CL A 032095101 6,346 114 1.83 687 15.08 0.0023
2020-08-12 2020-06-30 13F AMPHENOL CORP CL A 032095101 6,232 89 1.45 597 33.56 0.0023
2020-05-11 2020-03-31 13F AMPHENOL CORP CL A 032095101 6,143 48 0.79 447 -32.17 0.0021
2020-02-05 2019-12-31 13F AMPHENOL CORP CL A 032095101 6,095 127 2.13 659 14.61 0.0025
2019-10-30 2019-09-30 13F AMPHENOL CORP CL A 032095101 5,968 120 2.05 575 2.50 0.0025
2019-07-19 2019-06-30 13F AMPHENOL CORP CL A 032095101 5,848 354 6.44 561 8.30 0.0025
2019-05-13 2019-03-31 13F AMPHENOL CORP CL A 032095101 5,494 -511 -8.51 518 6.58 0.0024
2019-02-11 2018-12-31 13F AMPHENOL CORP CL A 032095101 6,005 269 4.69 486 -9.83 0.0026
2018-11-06 2018-09-30 13F AMPHENOL CORP CL A 032095101 5,736 -4,139 -41.91 539 -37.40 0.0026
2018-07-31 2018-06-30 13F AMPHENOL CORP CL A 032095101 9,875 -1,259 -11.31 861 -10.22 0.0045
2018-05-14 2018-03-31 13F AMPHENOL CORP CL A 032095101 11,134 2,067 22.80 959 20.48 0.0052
2018-02-12 2017-12-31 13F AMPHENOL CORP CL A 032095101 9,067 9,067 796 0.0043
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.