Amphenol Corporation
MX ˙ BMV ˙ US0320951017
SecurityMX:APH / Amphenol Corporation
InstitutionAdvisors Asset Management, Inc.
Latest Disclosed Ownership177,437 shares
Latest Disclosed Value $ 22,419,165
Advisors Asset Management, Inc. reports 4.27% decrease in ownership of APH / Amphenol Corporation

On May 15, 2026 - Advisors Asset Management, Inc. filed a 13F-HR form disclosing ownership of 177,437 shares of Amphenol Corporation (MX:APH) valued at $22,419,165 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 185,349 shares of Amphenol Corporation. This represents a change in shares of -4.27% 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-15 2026-03-31 13F AMPHENOL CL A 032095101 177,437 -7,912 -4.27 22,419 -10.50 0.3722
2026-02-12 2025-12-31 13F AMPHENOL CORP CL A 032095101 185,349 8,439 4.77 25,048 14.42 0.4205
2025-11-06 2025-09-30 13F AMPHENOL CORP CL A 032095101 176,910 1,293 0.74 21,893 26.24 0.3716
2025-08-12 2025-06-30 13F AMPHENOL CORP CL A 032095101 175,617 -3,580 -2.00 17,342 47.55 0.3105
2025-05-15 2025-03-31 13F AMPHENOL CORP CL A 032095101 179,197 52,027 40.91 11,754 33.09 0.2208
2025-02-10 2024-12-31 13F AMPHENOL CORP CL A 032095101 127,170 20,271 18.96 8,832 26.79 0.1627
2024-11-08 2024-09-30 13F AMPHENOL CORP CL A 032095101 106,899 19,496 22.31 6,966 18.29 0.1279
2024-08-14 2024-06-30 13F AMPHENOL CORP CL A 032095101 87,403 56,898 186.52 5,888 67.37 0.1148
2024-05-14 2024-03-31 13F AMPHENOL CORP CL A 032095101 30,505 9,530 45.44 3,519 69.22 0.0676
2024-02-14 2023-12-31 13F AMPHENOL CORP CL A 032095101 20,975 -356 -1.67 2,079 16.08 0.0425
2023-11-14 2023-09-30 13F AMPHENOL CORP CL A 032095101 21,331 -1,059 -4.73 1,792 -5.84 0.0387
2023-08-14 2023-06-30 13F AMPHENOL CORP CL A 032095101 22,390 7,801 53.47 1,902 59.56 0.0389
2023-05-12 2023-03-31 13F AMPHENOL CORP CL A 032095101 14,589 -3,817 -20.74 1,192 -14.92 0.0243
2023-02-13 2022-12-31 13F AMPHENOL CORP CL A 032095101 18,406 -2,446 -11.73 1,401 0.36 0.0289
2022-11-08 2022-09-30 13F AMPHENOL CL A 032095101 20,852 -10,885 -34.30 1,396 -31.67 0.0293
2022-08-08 2022-06-30 13F AMPHENOL CORP CL A 032095101 31,737 -2,784 -8.06 2,043 -21.45 0.0388
2022-05-17 2022-03-31 13F AMPHENOL CORP CL A 032095101 34,521 -6,110 -15.04 2,601 -26.81 0.0401
2022-02-15 2021-12-31 13F AMPHENOL CL A 032095101 40,631 -5,634 -12.18 3,554 4.90 0.0507
2021-11-12 2021-09-30 13F AMPHENOL CORP CL A 032095101 46,265 -873 -1.85 3,388 5.05 0.0515
2021-07-30 2021-06-30 13F AMPHENOL CORP CL A 032095101 47,138 9,309 24.61 3,225 29.21 0.0476
2021-05-07 2021-03-31 13F AMPHENOL CORP CL A 032095101 37,829 21,406 130.34 2,496 16.20 0.0388
2021-02-12 2020-12-31 13F AMPHENOL CORP CL A 032095101 16,423 2,861 21.10 2,148 46.32 0.0355
2020-11-16 2020-09-30 13F AMPHENOL CORP CL A 032095101 13,562 2,249 19.88 1,468 35.42 0.0271
2020-08-12 2020-06-30 13F AMPHENOL CORP CL A 032095101 11,313 -164 -1.43 1,084 29.67 0.0211
2020-05-15 2020-03-31 13F AMPHENOL CORP CL A 032095101 11,477 -5,497 -32.38 836 -54.49 0.0199
2020-05-20 2019-12-31 13F/A-1 AMPHENOL CORP CL A 032095101 16,974 -1,838 -9.77 1,837 1.21 0.0322
2020-02-14 2019-12-31 13F AMPHENOL CORP CL A 032095101 16,974 -1,838 1,837 16,259.1868
2019-11-14 2019-09-30 13F AMPHENOL CORP CL A 032095101 18,812 -3,096 -14.13 1,815 -13.65 0.0334
2019-11-14 2019-06-30 13F/A-1 AMPHENOL CL A 032095101 21,908 -2,833 -11.45 2,102 -10.06 0.0379
2019-08-14 2019-06-30 13F AMPHENOL CORP CL A 032095101 21,908 -2,833 2,102
2019-05-15 2019-03-31 13F AMPHENOL COM 032095101 24,741 -4,026 -14.00 2,337 0.26 0.0416
2019-02-06 2018-12-31 13F/A-1 AMPHENOL CORP CL A 032095101 28,767 -4,561 -13.69 2,331 -25.60 0.0469
2019-01-31 2018-12-31 13F AMPHENOL CORP CL A 032095101 28,767 -4,561 2,331
2018-11-15 2018-09-30 13F AMPHENOL CORP CL A 032095101 33,328 -1,274 -3.68 3,133 3.88 0.0512
2018-08-22 2018-06-30 13F/A-1 AMPHENOL CORP CL A 032095101 34,602 960 2.85 3,016 -1.92 0.0512
2018-08-15 2018-06-30 13F AMPHENOL CORP CL A 032095101 73,131 39,489 3,016
2018-05-15 2018-03-31 13F AMPHENOL CORP CL A 032095101 33,642 -2,234 -6.23 3,075 -2.38 0.0515
2018-02-13 2017-12-31 13F AMPHENOL CORP CL A 032095101 35,876 -2,356 -6.16 3,150 -2.66 0.0518
2017-11-07 2017-09-30 13F AMPHENOL CORP CL A 032095101 38,232 -4,434 -10.39 3,236 2.73 0.0542
2017-08-02 2017-06-30 13F AMPHENOL CORP CL A 032095101 42,666 2,356 5.84 3,150 9.79 0.0526
2017-05-02 2017-03-31 13F AMPHENOL CORP CL A 032095101 40,310 9,222 29.66 2,869 42.17 0.0481
2016-10-31 2016-09-30 13F AMPHENOL CORP CL A 032095101 31,088 4,327 16.17 2,018 31.55 0.0331
2016-08-08 2016-06-30 13F AMPHENOL CORP CL A 032095101 26,761 3,532 15.21 1,534 14.22 0.0249
2016-05-16 2016-03-31 13F AMPHENOL CORP CL A 032095101 23,229 144 0.62 1,343 11.36 0.0223
2016-02-10 2015-12-31 13F AMPHENOL CORP CL A 032095101 23,085 -14,187 -38.06 1,206 -36.49 0.0191
2015-11-16 2015-09-30 13F AMPHENOL CORP CL A 032095101 37,272 -1,576 -4.06 1,899 -15.67 0.0303
2015-08-11 2015-06-30 13F AMPHENOL CORP CL A 032095101 38,848 -1,657 -4.09 2,252 -5.66 0.0309
2015-05-13 2015-03-31 13F AMPHENOL CORP CL A 032095101 40,505 -4,503 -10.00 2,387 -1.45 0.0318
2015-02-05 2014-12-31 13F AMPHENOL CORP CL A 032095101 45,008 24,971 124.62 2,422 21.04 0.0325
2014-11-13 2014-09-30 13F AMPHENOL CORP CL A 032095101 20,037 5,046 33.66 2,001 38.57 0.0276
2014-08-14 2014-06-30 13F AMPHENOL CORP CL A 032095101 14,991 1,329 9.73 1,444 15.34 0.0200
2014-05-15 2014-03-31 13F AMPHENOL CORP CL A 032095101 13,662 2,319 20.44 1,252 23.72 0.0190
2014-02-03 2013-12-31 13F AMPHENOL CORP CL A 032095101 11,343 2,827 33.20 1,012 53.57 0.0163
2013-11-15 2013-09-30 13F AMPHENOL CORP CL A 032095101 8,516 1,250 17.20 659 16.43 0.0117
2013-08-14 2013-06-30 13F AMPHENOL CORP CL A 032095101 7,266 7,266 566 0.0107
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.