Amphenol Corporation
US ˙ NYSE ˙ US0320951017

SecurityAPH / Amphenol Corporation
InstitutionAddenda Capital Inc.
Latest Disclosed Ownership193,786 shares
Latest Disclosed Value $ 24,526,581
Addenda Capital Inc. reports 2.49% decrease in ownership of APH / Amphenol Corporation

On April 15, 2026 - Addenda Capital Inc. filed a 13F-HR form disclosing ownership of 193,786 shares of Amphenol Corporation (US:APH) valued at $24,484,861 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 22, 2026 disclosing 198,728 shares of Amphenol Corporation. This represents a change in shares of -2.49% during the quarter. The current value of the position is $28,606,689 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)
2026-04-15 2026-03-31 13F AMPHENOL CL A 032095101 193,786 -4,942 -2.49 24,527 -8.83 0.6907
2026-01-22 2025-12-31 13F AMPHENOL CORP CL A 032095101 198,728 -83,157 -29.50 26,902 -22.97 0.7894
2025-10-09 2025-09-30 13F AMPHENOL CORP CL A 032095101 281,885 81,661 40.78 34,923 76.37 1.0332
2025-07-17 2025-06-30 13F AMPHENOL CORP CL A 032095101 200,224 -799 -0.40 19,800 49.85 0.7107
2025-04-09 2025-03-31 13F AMPHENOL CORP CL A 032095101 201,023 26,625 15.27 13,213 8.87 0.4886
2025-01-16 2024-12-31 13F AMPHENOL CORP CL A 032095101 174,398 8,421 5.07 12,136 11.98 0.4284
2024-10-15 2024-09-30 13F AMPHENOL CORP CL A 032095101 165,977 -82 -0.05 10,838 -3.25 0.3866
2024-07-16 2024-06-30 13F AMPHENOL CORP CL A 032095101 166,059 88,939 115.33 11,202 25.72 0.4392
2024-04-16 2024-03-31 13F AMPHENOL CORP CL A 032095101 77,120 -4,131 -5.08 8,910 10.42 0.3383
2024-01-23 2023-12-31 13F AMPHENOL CORP CL A 032095101 81,251 -643 -0.79 8,069 17.08 0.3153
2023-10-12 2023-09-30 13F AMPHENOL CORP CL A 032095101 81,894 -1,017 -1.23 6,893 -2.35 0.3001
2023-07-21 2023-06-30 13F AMPHENOL CORP CL A 032095101 82,911 -15,372 -15.64 7,059 -12.31 0.2963
2023-04-11 2023-03-31 13F AMPHENOL CORP CL A 032095101 98,283 -1,448 -1.45 8,049 5.75 0.3309
2023-01-12 2022-12-31 13F AMPHENOL CORP CL A 032095101 99,731 -1,577 -1.56 7,612 11.88 0.3304
2022-10-11 2022-09-30 13F AMPHENOL CORP CL A 032095101 101,308 -10,472 -9.37 6,803 -5.72 0.3108
2022-07-13 2022-06-30 13F AMPHENOL CORP CL A 032095101 111,780 -227 -0.20 7,216 -14.68 0.3455
2022-04-14 2022-03-31 13F AMPHENOL CORP CL A 032095101 112,007 7,096 6.76 8,458 -8.00 0.3460
2022-01-14 2021-12-31 13F AMPHENOL CORP CL A 032095101 104,911 -209 -0.20 9,193 19.22 0.3947
2021-10-08 2021-09-30 13F AMPHENOL CORP CL A 032095101 105,120 -371 -0.35 7,711 6.65 0.3633
2021-07-19 2021-06-30 13F AMPHENOL CORP CL A 032095101 105,491 41,573 65.04 7,230 -13.66 0.3394
2021-04-13 2021-03-31 13F AMPHENOL CORP CL A 032095101 63,918 0 0.00 8,374 0.01 0.4277
2021-01-19 2020-12-31 13F AMPHENOL CORP CL A 032095101 63,918 -979 -1.51 8,373 18.92 0.5275
2020-10-15 2020-09-30 13F AMPHENOL CORP CL A 032095101 64,897 -226 -0.35 7,041 12.57 0.5143
2020-07-09 2020-06-30 13F AMPHENOL CORP CL A 032095101 65,123 -3,193 -4.67 6,255 25.23 0.4363
2020-04-13 2020-03-31 13F AMPHENOL CORP CL A 032095101 68,316 11,194 19.60 4,995 -19.37 0.4242
2020-01-31 2019-12-31 13F AMPHENOL CORP CL A 032095101 57,122 3,239 6.01 6,195 18.84 0.4094
2019-10-08 2019-09-30 13F AMPHENOL CORP CL A 032095101 53,883 8,940 19.89 5,213 20.67 0.3669
2019-07-12 2019-06-30 13F AMPHENOL CORP CL A 032095101 44,943 -10,335 -18.70 4,320 -17.43 0.3131
2019-04-09 2019-03-31 13F AMPHENOL CORP CL A 032095101 55,278 3,242 6.23 5,232 23.81 0.3790
2019-01-14 2018-12-31 13F AMPHENOL CORP CL A 032095101 52,036 52,036 4,226 0.3709
2018-10-16 2018-09-30 13F AMPHENOL CORP CL A 032095101 0 -135,727 -100.00 0 -100.00
2018-07-12 2018-06-30 13F AMPHENOL CORP CL A 032095101 135,727 64,839 91.47 11,781 92.63 0.4404
2018-04-11 2018-03-31 13F AMPHENOL CORP CL A 032095101 70,888 -2,115 -2.90 6,116 -4.76 0.4596
2018-01-12 2017-12-31 13F AMPHENOL CORP CL A 032095101 73,003 -4,938 -6.34 6,422 -2.89 0.4431
2017-10-11 2017-09-30 13F AMPHENOL CORP CL A 032095101 77,941 -15,572 -16.65 6,613 -4.39 0.4622
2017-08-04 2017-06-30 13F AMPHENOL CORP CL A 032095101 93,513 -3,869 -3.97 6,917 -0.39 0.5162
2017-04-10 2017-03-31 13F AMPHENOL CORP CL A 032095101 97,382 9,241 10.48 6,944 17.00 0.5358
2017-01-31 2016-12-31 13F AMPHENOL CORP CL A 032095101 88,141 -553 -0.62 5,935 16.49 0.4743
2016-10-17 2016-09-30 13F AMPHENOL CORP CL A 032095101 88,694 0 0.00 5,095 0.00 0.4236
2016-08-10 2016-06-30 13F AMPHENOL CORP CL A 032095101 88,694 -1,133 -1.26 5,095 -1.45 0.4237
2016-05-04 2016-03-31 13F AMPHENOL CORP CL A 032095101 89,827 263 0.29 5,170 11.16 0.4518
2016-01-20 2015-12-31 13F AMPHENOL CORP CL A 032095101 89,564 6,804 8.22 4,651 10.95 0.4385
2015-11-13 2015-09-30 13F AMPHENOL CORP CL A 032095101 82,760 -1,949 -2.30 4,192 -14.26 0.3993
2015-07-08 2015-06-30 13F AMPHENOL CORP CL A 032095101 84,709 -210 -0.25 4,889 -1.81 0.4164
2015-05-15 2015-03-31 13F AMPHENOL CORP CL A 032095101 84,919 84,919 0.00 4,979 0.4213
2015-02-05 2014-12-31 13F AMPHENOL CORP CL A 032095101 0 -39,755 -100.00 0 -100.00
2014-11-04 2014-09-30 13F AMPHENOL CORP CL A 032095101 39,755 1,580 4.14 3,965 7.83 0.3487
2014-07-31 2014-06-30 13F AMPHENOL CORP CL A 032095101 38,175 649 1.73 3,677 7.01 0.3117
2014-05-06 2014-03-31 13F AMPHENOL CORP CL A 032095101 37,526 -2,614 -6.51 3,436 -4.02 0.3089
2014-02-13 2013-12-31 13F AMPHENOL CORP CL A 032095101 40,140 -2,890 -6.72 3,580 7.25 0.3186
2013-11-06 2013-09-30 13F/A-1 AMPHENOL CORP CL A 032095101 43,030 2,220 5.44 3,338 5.80 0.3068
2013-11-04 2013-09-30 13F AMPHENOL CORP CL A 032095101 40,810 3,155
2013-08-12 2013-06-30 13F AMPHENOL CORP CL A 032095101 40,810 40,810 3,155 0.3083
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.