安費諾公司
MX ˙ BMV ˙ US0320951017
SecurityMX:APH / Amphenol Corporation
Institution1832 Asset Management L.P.
Latest Disclosed Ownership129,463 shares
Latest Disclosed Value $ 16,357,650
1832 Asset Management L.P. reports 55.55% decrease in ownership of APH / Amphenol Corporation

On May 14, 2026 - 1832 Asset Management L.P. filed a 13F-HR form disclosing ownership of 129,463 shares of Amphenol Corporation (MX:APH) valued at $16,357,650 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 291,253 shares of Amphenol Corporation. This represents a change in shares of -55.55% 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)
2026-05-14 2026-03-31 13F AMPHENOL CL A 032095101 129,463 -161,790 -55.55 16,358 -58.44 0.0150
2026-02-13 2025-12-31 13F AMPHENOL CORP CL A 032095101 291,253 -1,499,863 -83.74 39,360 -82.24 0.0300
2025-11-14 2025-09-30 13F AMPHENOL CORP CL A 032095101 1,791,116 -11,703 -0.65 221,651 24.50 0.1750
2025-08-13 2025-06-30 13F AMPHENOL CORP CL A 032095101 1,802,819 1,781,570 8,384.25 178,028 12,680.19 0.1389
2025-05-14 2025-03-31 13F AMPHENOL CORP CL A 032095101 21,249 -484,153 -95.80 1,394 -96.03 0.0013
2025-02-14 2024-12-31 13F AMPHENOL CORP CL A 032095101 505,402 431,546 584.31 35,100 629.43 0.0298
2024-11-13 2024-09-30 13F AMPHENOL CORP CL A 032095101 73,856 -9,351 -11.24 4,812 -14.15 0.0037
2024-08-13 2024-06-30 13F AMPHENOL CORP CL A 032095101 83,207 47,341 131.99 5,606 35.48 0.0046
2024-05-14 2024-03-31 13F AMPHENOL CORP CL A 032095101 35,866 -25 -0.07 4,137 16.31 0.0024
2024-02-13 2023-12-31 13F AMPHENOL CORP CL A 032095101 35,891 -9,524 -20.97 3,558 -6.74 0.0051
2023-11-13 2023-09-30 13F AMPHENOL CORP CL A 032095101 45,415 77 0.17 3,814 -0.96 0.0054
2023-08-14 2023-06-30 13F AMPHENOL CORP CL A 032095101 45,338 -860 -1.86 3,851 2.01 0.0075
2023-05-12 2023-03-31 13F AMPHENOL CORP CL A 032095101 46,198 7,182 18.41 3,775 27.10 0.0078
2023-02-15 2022-12-31 13F AMPHENOL CORP CL A 032095101 39,016 746 1.95 2,971 15.88 0.0061
2022-11-14 2022-09-30 13F AMPHENOL CORP CL A 032095101 38,270 1,961 5.40 2,563 9.62 0.0055
2022-08-15 2022-06-30 13F AMPHENOL CORP CL A 032095101 36,309 -7,038 -16.24 2,338 -27.50 0.0047
2022-05-16 2022-03-31 13F AMPHENOL CORP CL A 032095101 43,347 43,077 15,954.44 3,225 13,337.50 0.0053
2022-02-15 2021-12-31 13F AMPHENOL CORP CL A 032095101 270 -531,535 -99.95 24 -99.94 0.0000
2021-11-15 2021-09-30 13F AMPHENOL CORP CL A 032095101 531,805 507,577 2,095.00 39,894 2,641.86 0.0748
2021-08-20 2021-06-30 13F/A-1 AMPHENOL CORP CL A 032095101 24,228 -108,886 -81.80 1,455 -83.00 0.0028
2021-08-16 2021-06-30 13F AMPHENOL CORP CL A 032095101 24,228 -108,886 1,455 0.0028
2021-05-17 2021-03-31 13F AMPHENOL CORP CL A 032095101 133,114 -191,946 -59.05 8,561 -79.63 0.0185
2021-02-16 2020-12-31 13F AMPHENOL CORP CL A 032095101 325,060 237,458 271.06 42,019 348.44 0.0983
2020-11-16 2020-09-30 13F AMPHENOL CORP CL A 032095101 87,602 -119,300 -57.66 9,370 -52.35 0.0245
2020-08-14 2020-06-30 13F AMPHENOL CORP CL A 032095101 206,902 200 0.10 19,664 25.96 0.0590
2020-05-26 2020-03-31 13F/A-1 AMPHENOL CORP CL A 032095101 206,702 -188,590 -47.71 15,611 -63.57 0.0563
2020-05-14 2020-03-31 13F AMPHENOL CORP CL A 032095101 72 -395,220 5 37.8052
2020-02-14 2019-12-31 13F AMPHENOL CORP CL A 032095101 395,292 -67,694 -14.62 42,849 -2.73 0.1304
2019-11-14 2019-09-30 13F AMPHENOL CORP CL A 032095101 462,986 273,113 143.84 44,051 143.89 0.1402
2019-08-14 2019-06-30 13F AMPHENOL CORP CL A 032095101 189,873 181,816 2,256.62 18,062 2,780.70 0.0584
2019-05-15 2019-03-31 13F AMPHENOL CORP CL A 032095101 8,057 -14,999 -65.05 627 -60.91 0.0021
2019-02-14 2018-12-31 13F AMPHENOL CORP CL A 032095101 23,056 22,984 31,922.22 1,604 22,814.29 0.0063
2018-11-14 2018-09-30 13F AMPHENOL CORP CL A 032095101 72 0 0.00 7 16.67 0.0000
2018-08-14 2018-06-30 13F AMPHENOL CORP CL A 032095101 72 72 6 0.0000
2018-05-15 2018-03-31 13F AMPHENOL CORP CL A 032095101 0 -58 -100.00 0 -100.00
2018-02-14 2017-12-31 13F AMPHENOL CORP CL A 032095101 58 58 5 0.0000
2016-05-12 2016-03-31 13F AMPHENOL CORP CL A 032095101 0 -916,850 -100.00 0 -100.00
2016-02-12 2015-12-31 13F AMPHENOL CORP CL A 032095101 916,850 -1,850 -0.20 48,684 3.61 0.2104
2015-11-12 2015-09-30 13F AMPHENOL CORP CL A 032095101 918,700 154,643 20.24 46,990 6.21 0.1966
2015-08-13 2015-06-30 13F AMPHENOL CORP CL A 032095101 764,057 107,357 16.35 44,241 14.15 0.1501
2015-05-13 2015-03-31 13F AMPHENOL CORP CL A 032095101 656,700 -34,615 -5.01 38,758 4.29 0.1458
2015-02-12 2014-12-31 13F AMPHENOL CORP CL A 032095101 691,315 345,040 99.64 37,162 7.37 0.1151
2014-11-12 2014-09-30 13F AMPHENOL CORP CL A 032095101 346,275 -325 -0.09 34,611 3.58 0.1130
2014-08-13 2014-06-30 13F AMPHENOL CORP CL A 032095101 346,600 -3,100 -0.89 33,414 4.17 0.1053
2014-05-14 2014-03-31 13F AMPHENOL CORP CL A 032095101 349,700 318,600 1,024.44 32,076 1,055.06 0.1103
2014-02-13 2013-12-31 13F AMPHENOL CORP CL A 032095101 31,100 9,100 41.36 2,777 63.35 0.0107
2013-11-13 2013-09-30 13F AMPHENOL CORP CL A 032095101 22,000 -4,800 -17.91 1,700 -18.62 0.0075
2013-08-14 2013-06-30 13F AMPHENOL CORP CL A 032095101 26,800 26,800 2,089 0.0091
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.