Amphenol Corporation
US ˙ NYSE ˙ US0320951017

SecurityAPH / Amphenol Corporation
InstitutionRenaissance Group Llc
Latest Disclosed Ownership305,160 shares
Latest Disclosed Value $ 38,557,027
Renaissance Group Llc reports 6.72% decrease in ownership of APH / Amphenol Corporation

On May 13, 2026 - Renaissance Group Llc filed a 13F-HR form disclosing ownership of 305,160 shares of Amphenol Corporation (US:APH) valued at $38,556,966 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 327,153 shares of Amphenol Corporation. This represents a change in shares of -6.72% during the quarter. The current value of the position is $44,788,333 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 CORP CL A 032095101 305,160 -21,993 -6.72 38,557 -12.79 1.6137
2026-02-11 2025-12-31 13F AMPHENOL CORP COM 032095101 327,153 -23,695 -6.75 44,211 1.83 1.7753
2025-11-05 2025-09-30 13F AMPHENOL CORP CL A 032095101 350,848 -49,951 -12.46 43,417 9.70 1.6379
2025-08-11 2025-06-30 13F AMPHENOL CORP COM 032095101 400,799 -118,848 -22.87 39,579 16.12 1.5421
2025-05-13 2025-03-31 13F AMPHENOL CORP COM 032095101 519,647 -9,006 -1.70 34,084 -7.17 1.5028
2025-02-13 2024-12-31 13F AMPHENOL CORP COM 032095101 528,653 -15,897 -2.92 36,715 3.47 1.5219
2024-11-12 2024-09-30 13F AMPHENOL CORP COM 032095101 544,550 -7,279 -1.32 35,483 -4.56 1.4610
2024-08-14 2024-06-30 13F AMPHENOL CORP COM 032095101 551,829 234,584 73.94 37,177 1.59 1.4506
2024-04-26 2024-03-31 13F AMPHENOL COM 032095101 317,245 -50,703 -13.78 36,594 0.33 1.3836
2024-02-09 2023-12-31 13F AMPHENOL COM 032095101 367,948 -7,371 -1.96 36,475 15.71 1.5110
2023-11-13 2023-09-30 13F AMPHENOL COM 032095101 375,319 -9,869 -2.56 31,523 -3.66 1.4401
2023-08-10 2023-06-30 13F AMPHENOL COM 032095101 385,188 -674 -0.17 32,722 3.77 1.4136
2023-05-12 2023-03-31 13F AMPHENOL COM 032095101 385,862 -4,464 -1.14 31,533 6.10 1.4455
2023-02-14 2022-12-31 13F AMPHENOL COM 032095101 390,326 -8,630 -2.16 29,719 11.25 1.4575
2022-11-14 2022-09-30 13F AMPHENOL COM 032095101 398,956 -687 -0.17 26,714 3.83 1.4360
2022-08-15 2022-06-30 13F AMPHENOL COM 032095101 399,643 -557 -0.14 25,729 -14.68 1.3277
2022-05-13 2022-03-31 13F AMPHENOL COM 032095101 400,200 -7,296 -1.79 30,155 -15.39 1.3576
2022-02-11 2021-12-31 13F AMPHENOL COM 032095101 407,496 -16,316 -3.85 35,640 14.83 1.4506
2021-11-12 2021-09-30 13F AMPHENOL COM 032095101 423,812 -3,175 -0.74 31,036 6.25 1.3394
2021-08-13 2021-06-30 13F AMPHENOL COM 032095101 426,987 -13,209 -3.00 29,210 0.59 1.2235
2021-05-13 2021-03-31 13F AMPHENOL COM 032095101 440,196 214,205 94.78 29,040 -1.74 1.2279
2021-02-12 2020-12-31 13F AMPHENOL COM 032095101 225,991 -16,763 -6.91 29,553 12.44 1.2702
2020-11-12 2020-09-30 13F AMPHENOL COM 032095101 242,754 -5,760 -2.32 26,283 10.39 1.2154
2020-08-12 2020-06-30 13F AMPHENOL COM 032095101 248,514 -1,711 -0.68 23,810 30.57 1.1352
2020-05-06 2020-03-31 13F AMPHENOL COM 032095101 250,225 -766 -0.31 18,236 -32.87 1.0140
2020-02-12 2019-12-31 13F AMPHENOL COM 032095101 250,991 -5,939 -2.31 27,165 9.56 1.1174
2019-10-31 2019-09-30 13F AMPHENOL COM 032095101 256,930 -775 -0.30 24,794 0.28 1.0489
2019-08-13 2019-06-30 13F AMPHENOL COM 032095101 257,705 -28,712 -10.02 24,724 -8.60 1.0022
2019-04-30 2019-03-31 13F AMPHENOL COM 032095101 286,417 286,417 27,049 1.0798
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.