Amphenol Corporation
US ˙ NYSE ˙ US0320951017

SecurityAPH / Amphenol Corporation
InstitutionMackenzie Financial Corp
Latest Disclosed Ownership1,476,411 shares
Latest Disclosed Value $ 186,544,530
Mackenzie Financial Corp reports 24.69% decrease in ownership of APH / Amphenol Corporation

On May 13, 2026 - Mackenzie Financial Corp filed a 13F-HR form disclosing ownership of 1,476,411 shares of Amphenol Corporation (US:APH) valued at $186,544,530 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 18, 2026 disclosing 1,960,557 shares of Amphenol Corporation. This represents a change in shares of -24.69% during the quarter. The current value of the position is $217,947,792 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 AMPHENOL CL A 032095101 1,476,411 -484,146 -24.69 186,545 -30.00 0.2238
2026-02-18 2025-12-31 13F AMPHENOL CORP CL A 032095101 1,960,557 -2,863 -0.15 266,503 9.68 0.3156
2025-11-13 2025-09-30 13F AMPHENOL CORP CL A 032095101 1,963,420 -1,427,120 -42.09 242,973 -27.43 0.2943
2025-08-13 2025-06-30 13F AMPHENOL CORP CL A 032095101 3,390,540 -326,601 -8.79 334,816 37.33 0.4338
2025-05-07 2025-03-31 13F AMPHENOL CORP CL A 032095101 3,717,141 -1,847,111 -33.20 243,807 -36.91 0.3467
2025-05-02 2024-12-31 13F/A-2 AMPHENOL CORP CL A 032095101 5,564,252 2,900,024 108.85 386,437 122.60 0.5266
2025-02-20 2024-12-31 13F/A-1 AMPHENOL CORP CL A 032095101 5,564,252 2,900,024 386,437 0.5022
2025-02-14 2024-12-31 13F Amphenol Common Stock 032095101 5,564,252 2,900,024 387,429 0.5562
2024-11-13 2024-09-30 13F AMPHENOL CORP CL A 032095101 2,664,228 -528,720 -16.56 173,601 -19.30 0.2416
2024-08-14 2024-06-30 13F AMPHENOL CORP CL A 032095101 3,192,948 1,423,210 80.42 215,109 5.37 0.3196
2024-05-10 2024-03-31 13F AMPHENOL CORP CL A 032095101 1,769,738 67,269 3.95 204,139 20.96 0.2942
2024-01-30 2023-12-31 13F AMPHENOL CORP CL A 032095101 1,702,469 -3,339,788 -66.24 168,766 -59.27 0.2545
2023-10-25 2023-09-30 13F AMPHENOL CORP CL A 032095101 5,042,257 -157,638 -3.03 414,373 -5.22 0.6967
2023-08-03 2023-06-30 13F AMPHENOL CORP CL A 032095101 5,199,895 -34,097 -0.65 437,207 2.22 0.6632
2023-04-24 2023-03-31 13F AMPHENOL CORP CL A 032095101 5,233,992 -32,809 -0.62 427,722 6.66 0.6607
2023-02-14 2022-12-31 13F AMPHENOL CORP CL A 032095101 5,266,801 59,904 1.15 401,014 15.02 0.6698
2022-10-07 2022-09-30 13F Amphenol Common Stock 032095101 5,206,897 -56,464 -1.07 348,654 2.89 0.5997
2022-08-10 2022-06-30 13F AMPHENOL CORP CL A 032095101 5,263,361 308,367 6.22 338,855 -9.24 0.5427
2022-05-13 2022-03-31 13F AMPHENOL CORP CL A 032095101 4,954,994 -1,929,438 -28.03 373,359 -37.99 0.5006
2022-02-14 2021-12-31 13F AMPHENOL CORP CL A 032095101 6,884,432 -1,517,087 -18.06 602,112 -2.13 0.8112
2021-11-08 2021-09-30 13F AMPHENOL CORP CL A 032095101 8,401,519 -104,350 -1.23 615,243 5.73 0.8725
2021-08-11 2021-06-30 13F AMPHENOL CORP CL A 032095101 8,505,869 740,476 9.54 581,886 13.59 0.8093
2021-05-14 2021-03-31 13F AMPHENOL CORP CL A 032095101 7,765,393 5,144,818 196.32 512,283 49.49 0.7807
2021-02-10 2020-12-31 13F AMPHENOL CORP CL A 032095101 2,620,575 1,515,748 137.19 342,693 186.48 0.7401
2020-11-13 2020-09-30 13F AMPHENOL CORP CL A 032095101 1,104,827 32,064 2.99 119,620 16.38 0.2971
2020-08-13 2020-06-30 13F AMPHENOL CORP CL A 032095101 1,072,763 4,452 0.42 102,781 32.01 0.2751
2020-05-14 2020-03-31 13F AMPHENOL CORP CL A 032095101 1,068,311 596,217 126.29 77,859 52.38 0.2504
2020-02-13 2019-12-31 13F AMPHENOL CORP CL A 032095101 472,094 -15,000 -3.08 51,095 8.70 0.1257
2019-11-14 2019-09-30 13F AMPHENOL CORP CL A 032095101 487,094 -162,598 -25.03 47,005 -24.59 0.1235
2019-08-23 2019-06-30 13F/A-1 AMPHENOL CORP CL A 032095101 649,692 -226,254 -25.83 62,331 -24.65 0.1608
2019-08-14 2019-06-30 13F AMPHENOL CORP CL A 032095101 649,692 -226,254 62,331
2019-05-15 2019-03-31 13F AMPHENOL CORP CL A 032095101 875,946 257,983 41.75 82,724 65.23 0.1996
2019-02-06 2018-12-31 13F AMPHENOL CORP CL A 032095101 617,963 -1,027,186 -62.44 50,067 -67.63 0.1316
2018-11-15 2018-09-30 13F AMPHENOL CORP CL A 032095101 1,645,149 -49,911 -2.94 154,677 4.71 0.3763
2018-08-13 2018-06-30 13F AMPHENOL CORP CL A 032095101 1,695,060 591,660 53.62 147,724 55.44 0.3769
2018-05-14 2018-03-31 13F/A-1 AMPHENOL CORP CL A 032095101 1,103,400 78,437 7.65 95,036 5.60 0.2422
2018-05-14 2018-03-31 13F AMPHENOL CORP CL A 032095101 1,103,400 95,036
2018-02-13 2017-12-31 13F AMPHENOL CORP CL A 032095101 1,024,963 -416,578 -28.90 89,992 -26.24 0.2172
2017-11-13 2017-09-30 13F AMPHENOL CORP CL A 032095101 1,441,541 -203,911 -12.39 122,012 0.45 0.6580
2017-08-14 2017-06-30 13F AMPHENOL CORP CL A 032095101 1,645,452 -112,874 -6.42 121,467 -2.94 0.6762
2017-05-25 2017-03-31 13F/A-1 AMPHENOL CORP CL A 032095101 1,758,326 -99,222 -5.34 125,140 0.25 0.7319
2017-05-12 2017-03-31 13F AMPHENOL CORP CL A 032095101 1,758,326 125,140
2017-02-14 2016-12-31 13F AMPHENOL CORP CL A 032095101 1,857,548 -166,391 -8.22 124,827 -5.00 0.7477
2016-11-15 2016-09-30 13F AMPHENOL CORP CL A 032095101 2,023,939 262,092 14.88 131,394 30.08 0.8204
2016-08-12 2016-06-30 13F AMPHENOL CORP CL A 032095101 1,761,847 158,500 9.89 101,007 8.95 0.5706
2016-05-12 2016-03-31 13F AMPHENOL CORP CL A 032095101 1,603,347 -200,771 -11.13 92,706 -1.62 0.8410
2016-02-12 2015-12-31 13F AMPHENOL CORP CL A 032095101 1,804,118 -573,550 -24.12 94,229 -22.23 0.5848
2015-11-13 2015-09-30 13F AMPHENOL CORP CL A 032095101 2,377,668 71,983 3.12 121,166 -9.35 0.7352
2015-08-13 2015-06-30 13F AMPHENOL CORP CL A 032095101 2,305,685 29,715 1.31 133,661 -0.34 0.7246
2015-05-13 2015-03-31 13F AMPHENOL CORP CL A 032095101 2,275,970 -168,892 -6.91 134,123 1.95 0.7070
2015-02-11 2014-12-31 13F AMPHENOL CORP CL A 032095101 2,444,862 1,300,062 113.56 131,558 15.08 0.6713
2014-11-12 2014-09-30 13F AMPHENOL CORP CL A 032095101 1,144,800 2,900 0.25 114,320 3.92 0.5731
2014-08-11 2014-06-30 13F AMPHENOL CORP CL A 032095101 1,141,900 49,600 4.54 110,011 9.89 0.5117
2014-05-14 2014-03-31 13F AMPHENOL CORP CL A 032095101 1,092,300 5,600 0.52 100,109 3.30 0.4908
2014-02-11 2013-12-31 13F/A-1 AMPHENOL CORP CL A 032095101 1,086,700 -113,592 -9.46 96,912 4.34 0.4897
2014-02-03 2013-12-31 13F AMPHENOL CORP CL A 032095101 1,086,700 96,912
2013-11-12 2013-09-30 13F AMPHENOL CORP CL A 032095101 1,200,292 49,892 4.34 92,879 3.59 0.4701
2013-08-20 2013-06-30 13F/A-1 AMPHENOL CORP CL A 032095101 1,150,400 1,150,400 89,662 0.4276
2013-08-09 2013-06-30 13F AMPHENOL CORP CL A 032095101 1,150,400 89,662 0.4290
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.