Amphenol Corporation
MX ˙ BMV ˙ US0320951017
SecurityMX:APH / Amphenol Corporation
InstitutionJennison Associates Llc
Latest Disclosed Ownership10,238,520 shares
Latest Disclosed Value $ 1,293,637,018
Jennison Associates Llc reports 0.18% decrease in ownership of APH / Amphenol Corporation

On May 6, 2026 - Jennison Associates Llc filed a 13F-HR form disclosing ownership of 10,238,520 shares of Amphenol Corporation (MX:APH) valued at $1,293,637,018 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 30, 2026 disclosing 10,257,379 shares of Amphenol Corporation. This represents a change in shares of -0.18% 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)
2026-05-06 2026-03-31 13F AMPHENOL CL A 032095101 10,238,520 -18,859 -0.18 1,293,637 -6.68 0.8896
2026-01-30 2025-12-31 13F AMPHENOL CORP CL A 032095101 10,257,379 7,930,532 340.83 1,386,182 381.40 0.8322
2025-10-30 2025-09-30 13F AMPHENOL CORP CL A 032095101 2,326,847 2,326,847 287,947 0.1676
2025-01-24 2024-12-31 13F AMPHENOL CORP CL A 032095101 0 -313,669 -100.00 0 -100.00
2024-11-08 2024-09-30 13F AMPHENOL CORP CL A 032095101 313,669 -176,867 -36.06 20,439 -38.15 0.0127
2024-08-05 2024-06-30 13F AMPHENOL CORP CL A 032095101 490,536 178,068 56.99 33,047 -8.31 0.0212
2024-05-02 2024-03-31 13F AMPHENOL CORP CL A 032095101 312,468 -17,438 -5.29 36,043 10.21 0.0241
2024-02-01 2023-12-31 13F AMPHENOL CORP CL A 032095101 329,906 -296 -0.09 32,704 17.92 0.0244
2023-10-31 2023-09-30 13F AMPHENOL CORP CL A 032095101 330,202 -109,636 -24.93 27,734 -25.78 0.0235
2023-08-03 2023-06-30 13F AMPHENOL CORP CL A 032095101 439,838 -92,567 -17.39 37,364 -14.12 0.0306
2023-04-26 2023-03-31 13F AMPHENOL CORP CL A 032095101 532,405 22,492 4.41 43,508 12.06 0.0399
2023-02-09 2022-12-31 13F AMPHENOL CORP CL A 032095101 509,913 119,129 30.48 38,825 48.37 0.0393
2022-11-01 2022-09-30 13F AMPHENOL CORP CL A 032095101 390,784 -36,646 -8.57 26,167 -4.91 0.0260
2022-08-02 2022-06-30 13F AMPHENOL CORP CL A 032095101 427,430 -211,390 -33.09 27,518 -42.83 0.0275
2022-05-11 2022-03-31 13F AMPHENOL CORP CL A 032095101 638,820 12,946 2.07 48,135 -12.06 0.0354
2022-02-08 2021-12-31 13F AMPHENOL CORP CL A 032095101 625,874 -132,852 -17.51 54,739 -1.48 0.0347
2021-11-09 2021-09-30 13F AMPHENOL CORP CL A 032095101 758,726 -46,941 -5.83 55,562 0.81 0.0359
2021-08-12 2021-06-30 13F AMPHENOL CORP CL A 032095101 805,667 -111,292 -12.14 55,116 -8.89 0.0365
2021-05-11 2021-03-31 13F AMPHENOL CORP CL A 032095101 916,959 451,713 97.09 60,492 -0.57 0.0443
2021-02-05 2020-12-31 13F AMPHENOL CORP CL A 032095101 465,246 70,888 17.98 60,840 42.49 0.0434
2020-11-04 2020-09-30 13F AMPHENOL CORP CL A 032095101 394,358 85,038 27.49 42,697 44.07 0.0343
2020-08-06 2020-06-30 13F AMPHENOL CORP CL A 032095101 309,320 -218 -0.07 29,636 31.37 0.0268
2020-05-06 2020-03-31 13F AMPHENOL CORP CL A 032095101 309,538 -32,730 -9.56 22,559 -39.10 0.0274
2020-02-07 2019-12-31 13F AMPHENOL CORP CL A 032095101 342,268 -45,498 -11.73 37,044 -1.00 0.0374
2019-11-08 2019-09-30 13F AMPHENOL CORP CL A 032095101 387,766 -79,514 -17.02 37,419 -16.53 0.0395
2019-08-06 2019-06-30 13F AMPHENOL CORP CL A 032095101 467,280 -40,596 -7.99 44,831 -6.53 0.0448
2019-05-10 2019-03-31 13F AMPHENOL CORP CL A 032095101 507,876 -230,387 -31.21 47,964 -19.81 0.0477
2019-02-06 2018-12-31 13F AMPHENOL CORP CL A 032095101 738,263 -108,279 -12.79 59,814 -24.85 0.0669
2018-11-08 2018-09-30 13F AMPHENOL CORP CL A 032095101 846,542 -143,925 -14.53 79,592 -7.79 0.0733
2018-08-02 2018-06-30 13F AMPHENOL CORP CL A 032095101 990,467 -166,422 -14.39 86,319 -13.37 0.0842
2018-04-20 2018-03-31 13F AMPHENOL CORP CL A 032095101 1,156,889 -149,735 -11.46 99,643 -13.14 0.0991
2018-01-25 2017-12-31 13F AMPHENOL CORP CL A 032095101 1,306,624 -27,353 -2.05 114,722 1.61 0.1133
2017-11-03 2017-09-30 13F AMPHENOL CORP CL A 032095101 1,333,977 -382,781 -22.30 112,908 -10.91 0.1156
2017-08-04 2017-06-30 13F AMPHENOL CORP CL A 032095101 1,716,758 -273,410 -13.74 126,731 -10.53 0.1344
2017-08-02 2017-03-31 13F/A-1 AMPHENOL CORP CL A 032095101 1,990,168 -115,385 -5.48 141,640 0.10 0.1520
2017-04-28 2017-03-31 13F AMPHENOL CORP CL A 032095101 1,990,168 -115,385 141,640
2017-08-02 2016-12-31 13F/A-1 AMPHENOL CORP CL A 032095101 2,105,553 -725,843 -25.64 141,493 -23.02 0.1580
2017-02-06 2016-12-31 13F AMPHENOL CORP CL A 032095101 2,105,553 141,493
2016-11-01 2016-09-30 13F AMPHENOL CORP CL A 032095101 2,831,396 -239,649 -7.80 183,814 4.40 0.1981
2016-08-03 2016-06-30 13F AMPHENOL CORP CL A 032095101 3,071,045 -271,317 -8.12 176,063 -8.90 0.1932
2016-05-03 2016-03-31 13F AMPHENOL CORP CL A 032095101 3,342,362 -43,259 -1.28 193,255 9.29 0.2028
2016-02-10 2015-12-31 13F AMPHENOL CORP CL A 032095101 3,385,621 -287 -0.01 176,831 2.48 0.1736
2015-11-06 2015-09-30 13F AMPHENOL CORP CL A 032095101 3,385,908 168,142 5.23 172,546 -7.50 0.1836
2015-08-03 2015-06-30 13F AMPHENOL CORP CL A 032095101 3,217,766 -113,100 -3.40 186,534 -4.97 0.1710
2015-06-25 2015-03-31 13F/A-1 AMPHENOL CORP CL A 032095101 3,330,866 -45,228 -1.34 196,288 8.05 0.1798
2015-05-04 2015-03-31 13F AMPHENOL CORP CL A 032095101 3,330,866 196,288
2015-06-25 2014-12-31 13F/A-1 AMPHENOL CORP CL A 032095101 3,376,094 1,437,939 74.19 181,668 -6.14 0.1699
2015-02-06 2014-12-31 13F AMPHENOL CORP CL A 032095101 3,376,094 1,437,939 181,668 0.1699
2014-11-12 2014-09-30 13F/A-1 AMPHENOL CORP CL A 032095101 1,938,155 -48,915 -2.46 193,544 1.10 0.1795
2014-11-05 2014-09-30 13F AMPHENOL CORP CL A 032095101 1,938,155 -48,915 193,544 0.1844
2014-08-08 2014-06-30 13F AMPHENOL CORP CL A 032095101 1,987,070 10,661 0.54 191,434 5.68 0.1759
2014-05-07 2014-03-31 13F AMPHENOL CORP CL A 032095101 1,976,409 -203,695 -9.34 181,138 -6.83 0.1732
2014-02-10 2013-12-31 13F AMPHENOL CORP CL A 032095101 2,180,104 -16,780 -0.76 194,422 14.37 0.1907
2013-11-13 2013-09-30 13F AMPHENOL CORP CL A 032095101 2,196,884 -29,697 -1.33 169,995 -2.04 0.1782
2013-08-05 2013-06-30 13F AMPHENOL CORP CL A 032095101 2,226,581 2,226,581 173,540 0.1952
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.