Amphenol Corporation
US ˙ NYSE ˙ US0320951017

SecurityAPH / Amphenol Corporation
InstitutionAdvisory Services Network, LLC
Latest Disclosed Ownership75,546 shares
Latest Disclosed Value $ 9,545,372
Advisory Services Network, LLC reports 17.37% increase in ownership of APH / Amphenol Corporation

On May 15, 2026 - Advisory Services Network, LLC filed a 13F-HR form disclosing ownership of 75,546 shares of Amphenol Corporation (US:APH) valued at $9,545,237 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 64,367 shares of Amphenol Corporation. This represents a change in shares of 17.37% during the quarter. The current value of the position is $11,152,101 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)
2026-05-15 2026-03-31 13F AMPHENOL CORP CL A Stock 032095101 75,546 11,179 17.37 9,545 9.74 0.0882
2026-02-17 2025-12-31 13F AMPHENOL CORP CL A Stock 032095101 64,367 2,585 4.18 8,699 13.77 0.1231
2025-11-18 2025-09-30 13F AMPHENOL CORP Stock 032095101 61,782 -10,587 -14.63 7,645 -0.80 0.1121
2025-08-19 2025-06-30 13F AMPHENOL CORP Stock 032095101 72,369 26,292 57.06 7,708 155.03 0.1241
2025-05-15 2025-03-31 13F AMPHENOL CORP Stock 032095101 46,077 11,331 32.61 3,022 25.24 0.0581
2025-02-13 2024-12-31 13F AMPHENOL CORP Stock 032095101 34,746 700 2.06 2,413 5.23 0.0450
2024-11-14 2024-09-30 13F AMPHENOL CORP Stock 032095101 34,046 0 0.00 2,294 0.00 0.0474
2024-08-13 2024-06-30 13F AMPHENOL CORP Stock 032095101 34,046 12,944 61.34 2,294 -5.79 0.0474
2024-05-06 2024-03-31 13F AMPHENOL CORP Stock 032095101 21,102 -1,247 -5.58 2,434 9.89 0.0540
2024-02-09 2023-12-31 13F AMPHENOL CORP Stock 032095101 22,349 -3,057 -12.03 2,215 3.84 0.0541
2023-11-14 2023-09-30 13F AMPHENOL CORP Stock 032095101 25,406 3,130 14.05 2,134 12.74 0.0573
2023-08-09 2023-06-30 13F AMPHENOL CORP Stock 032095101 22,276 -398 -1.76 1,892 2.16 0.0504
2023-05-17 2023-03-31 13F AMPHENOL CORP Stock 032095101 22,674 1,324 6.20 1,853 13.97 0.0513
2023-02-13 2022-12-31 13F AMPHENOL CORP Stock 032095101 21,350 10,372 94.48 1,626 121.09 0.0498
2022-11-14 2022-09-30 13F AMPHENOL CORP Stock 032095101 10,978 10,978 735 0.0259
2021-11-05 2021-09-30 13F AMPHENOL CORP Stock 032095101 0 -1,203 -100.00 0 -100.00
2021-08-12 2021-06-30 13F AMPHENOL CORP Stock 032095101 1,203 1,203 82 0.0026
2021-05-24 2021-03-31 13F AMPHENOL CORP Stock 032095101 0 -607 -100.00 0 -100.00
2021-02-09 2020-12-31 13F AMPHENOL CORP Stock 032095101 607 -477 -44.00 79 -32.48 0.0032
2020-11-16 2020-09-30 13F AMPHENOL CORP Stock 032095101 1,084 1,084 78.58 117 48.10 0.0055
2020-08-10 2020-06-30 13F AMPHENOL CORP Stock 032095101 0 -1,295 -100.00 0 -100.00
2020-05-15 2020-03-31 13F AMPHENOL CORP Stock 032095101 1,295 627 93.86 94 30.56 0.0061
2020-02-04 2019-12-31 13F AMPHENOL CORP Stock 032095101 668 -409 -37.98 72 -30.77 0.0038
2019-11-04 2019-09-30 13F AMPHENOL CORP Stock 032095101 1,077 0 0.00 104 0.00 0.0064
2019-08-01 2019-06-30 13F AMPHENOL CORP Stock 032095101 1,077 88 8.90 104 11.83 0.0064
2019-05-20 2019-03-31 13F AMPHENOL CORP Stock 032095101 989 -77 -7.22 93 8.14 0.0065
2019-02-15 2018-12-31 13F AMPHENOL CORP Stock 032095101 1,066 0 0.00 86 -14.00 0.0075
2018-11-02 2018-09-30 13F AMPHENOL CORP Stock 032095101 1,066 500 88.34 100 85.19 0.0073
2018-07-27 2018-06-30 13F AMPHENOL CORP Stock 032095101 566 -759 -57.28 54 -52.63 0.0041
2018-04-23 2018-03-31 13F AMPHENOL CORP Stock 032095101 1,325 51 4.00 114 1.79 0.0091
2018-02-08 2017-12-31 13F AMPHENOL CORP Stock 032095101 1,274 -47 -3.56 112 0.00 0.0098
2017-10-12 2017-09-30 13F AMPHENOL CORP Stock 032095101 1,321 -1,492 -53.04 112 -46.15 0.0128
2017-08-17 2017-06-30 13F AMPHENOL CORP NEW CL A Stock 032095101 2,813 -3,979 -58.58 208 -56.94 0.0271
2017-04-28 2017-03-31 13F AMPHENOL CORP NEW CL A Stock 032095101 6,792 5,303 356.15 483 397.94 0.0702
2016-10-07 2016-09-30 13F AMPHENOL CORP Stock 032095101 1,489 363 32.24 97 49.23 0.0182
2016-07-27 2016-06-30 13F AMPHENOL CORP NEW CL A Stock 032095101 1,126 -61 -5.14 65 -5.80 0.0148
2016-04-21 2016-03-31 13F AMPHENOL CORP Stock 032095101 1,187 0 0.00 69 11.29 0.0188
2016-01-27 2015-12-31 13F AMPHENOL CORP NEW CL A Stock 032095101 1,187 0 0.00 62 3.33 0.0199
2015-10-01 2015-09-30 13F AMPHENOL CORP NEW CL A Stock 032095101 1,187 285 31.60 60 15.38 0.0181
2015-07-02 2015-06-30 13F AMPHENOL CORP NEW CL A Stock 032095101 902 772 593.85 52 550.00 0.0153
2015-04-08 2015-03-31 13F AMPHENOL CORP NEW CL A Stock 032095101 130 130 -85.59 8 -84.62 0.0022
2014-02-13 2013-12-31 13F AMPHENOL CORP Stock 032095101 0 0 0 0.0000
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.