Amphenol Corporation
MX ˙ BMV ˙ US0320951017
SecurityMX:APH / Amphenol Corporation
InstitutionPerennial Advisors, LLC
Latest Disclosed Ownership168,622 shares
Latest Disclosed Value $ 21,305,641
Perennial Advisors, LLC reports 3.10% decrease in ownership of APH / Amphenol Corporation

On April 13, 2026 - Perennial Advisors, LLC filed a 13F-HR form disclosing ownership of 168,622 shares of Amphenol Corporation (MX:APH) valued at $21,305,641 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 12, 2026 disclosing 174,010 shares of Amphenol Corporation. This represents a change in shares of -3.10% during the quarter.

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)
2026-04-13 2026-03-31 13F AMPHENOL CL A 032095101 168,622 -5,388 -3.10 21,306 -9.40 3.5648
2026-01-12 2025-12-31 13F AMPHENOL CORP CL A 032095101 174,010 -1,831 -1.04 23,516 8.07 3.9428
2025-10-14 2025-09-30 13F AMPHENOL CORP CL A 032095101 175,841 -2,266 -1.27 21,760 23.72 3.7688
2025-07-15 2025-06-30 13F AMPHENOL CORP CL A 032095101 178,107 -4,054 -2.23 17,588 47.20 3.2674
2025-04-14 2025-03-31 13F AMPHENOL CORP CL A 032095101 182,161 -1,610 -0.88 11,948 -6.39 2.3834
2025-02-21 2024-12-31 13F AMPHENOL CORP CL A 032095101 183,771 748 0.41 12,763 3.51 2.7779
2024-07-23 2024-06-30 13F AMPHENOL CORP CL A 032095101 183,023 90,057 96.87 12,330 14.99 2.7638
2024-04-10 2024-03-31 13F AMPHENOL CORP CL A 032095101 92,966 -1,470 -1.56 10,724 14.55 2.4942
2024-01-25 2023-12-31 13F AMPHENOL CORP CL A 032095101 94,436 275 0.29 9,362 18.37 2.3004
2023-10-17 2023-09-30 13F AMPHENOL CORP CL A 032095101 94,161 -88 -0.09 7,909 -1.22 2.1329
2023-08-01 2023-06-30 13F AMPHENOL CORP CL A 032095101 94,249 3,760 4.16 8,007 8.28 2.0410
2023-05-12 2023-03-31 13F AMPHENOL CORP CL A 032095101 90,489 -871 -0.95 7,395 6.30 2.1160
2023-01-31 2022-12-31 13F AMPHENOL CORP CL A 032095101 91,360 -5,933 -6.10 6,956 6.77 2.2112
2022-11-09 2022-09-30 13F AMPHENOL CORP CL A 032095101 97,293 279 0.29 6,515 4.31 2.1362
2022-08-09 2022-06-30 13F AMPHENOL CORP CL A 032095101 97,014 731 0.76 6,246 -13.91 1.9433
2022-04-27 2022-03-31 13F AMPHENOL CORP CL A 032095101 96,283 3,971 4.30 7,255 -10.14 1.9251
2022-02-08 2021-12-31 13F AMPHENOL CORP CL A 032095101 92,312 -423 -0.46 8,074 18.89 2.1758
2021-11-08 2021-09-30 13F AMPHENOL CORP CL A 032095101 92,735 2,074 2.29 6,791 9.50 2.0001
2021-08-13 2021-06-30 13F AMPHENOL CORP CL A 032095101 90,661 4,176 4.83 6,202 8.71 1.8003
2021-05-17 2021-03-31 13F AMPHENOL CORP CL A 032095101 86,485 44,318 105.10 5,705 3.46 1.7948
2021-02-12 2020-12-31 13F AMPHENOL CORP CL A 032095101 42,167 456 1.09 5,514 22.10 1.9423
2020-11-16 2020-09-30 13F AMPHENOL CORP CL A 032095101 41,711 811 1.98 4,516 15.23 1.8482
2020-08-14 2020-06-30 13F AMPHENOL CORP CL A 032095101 40,900 2,633 6.88 3,919 40.52 1.6663
2020-05-19 2020-03-31 13F/A-1 AMPHENOL CORP CL A 032095101 38,267 1,421 3.86 2,789 -30.07 1.5537
2020-05-19 2020-03-31 13F AMPHENOL CORP CL A 032095101 26,720 -10,126 1,796 1,491,211.3186
2020-01-23 2019-12-31 13F AMPHENOL CORP CL A 032095101 36,846 -73 -0.20 3,988 11.93 1.9150
2019-11-05 2019-09-30 13F AMPHENOL CORP CL A 032095101 36,919 1,183 3.31 3,563 3.91 1.8460
2019-07-18 2019-06-30 13F AMPHENOL CORP CL A 032095101 35,736 1,836 5.42 3,429 7.12 1.8257
2019-04-30 2019-03-31 13F AMPHENOL CORP CL A 032095101 33,900 1,174 3.59 3,201 20.70 1.8202
2019-01-29 2018-12-31 13F AMPHENOL CORP CL A 032095101 32,726 1,007 3.17 2,652 -11.07 1.7170
2018-11-05 2018-09-30 13F AMPHENOL CORP CL A 032095101 31,719 -225 -0.70 2,982 7.11 1.7163
2018-08-10 2018-06-30 13F AMPHENOL CORP CL A 032095101 31,944 550 1.75 2,784 2.96 1.7164
2018-04-24 2018-03-31 13F AMPHENOL CORP CL A 032095101 31,394 -1,040 -3.21 2,704 -5.06 1.7067
2018-01-29 2017-12-31 13F AMPHENOL CORP CL A 032095101 32,434 757 2.39 2,848 6.23 1.7681
2017-10-30 2017-09-30 13F AMPHENOL CORP CL A 032095101 31,677 365 1.17 2,681 16.01 1.8139
2017-07-31 2017-06-30 13F AMPHENOL CORP CL A 032095101 31,312 435 1.41 2,311 5.14 1.6771
2017-04-27 2017-03-31 13F AMPHENOL CORP CL A 032095101 30,877 4,157 15.56 2,198 22.38 1.6920
2017-04-27 2016-12-31 13F/A-2 AMPHENOL CORP CL A 032095101 26,720 26,720 1,796 1.4912
2017-04-27 2016-12-31 13F/A-1 AMPHENOL CORP CL A 032095101 26,720 0 1,796 1.5878
2017-02-10 2016-12-31 13F AMPHENOL CORP CL A 032095101 37,255 2,504 1.5834
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.