Amphenol Corporation
MX ˙ BMV ˙ US0320951017
SecurityMX:APH / Amphenol Corporation
InstitutionEmpirical Finance, LLC
Latest Disclosed Ownership40,067 shares
Latest Disclosed Value $ 5,062,465
Empirical Finance, LLC reports 0.13% decrease in ownership of APH / Amphenol Corporation

On May 14, 2026 - Empirical Finance, LLC filed a 13F-HR/A form disclosing ownership of 40,067 shares of Amphenol Corporation (MX:APH) valued at $5,062,465 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 40,119 shares of Amphenol Corporation. This represents a change in shares of -0.13% 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/A-1 AMPHENOL CL A 032095101 40,067 -52 -0.13 5,062 -6.62 0.2379
2026-05-14 2026-03-31 13F AMPHENOL CL A 032095101 40,067 -52 5,062 0.2379
2026-02-12 2025-12-31 13F AMPHENOL CORP CL A 032095101 40,119 -1,744 -4.17 5,422 4.65 0.2586
2025-11-13 2025-09-30 13F AMPHENOL CORP CL A 032095101 41,863 414 1.00 5,181 26.56 0.2466
2025-08-11 2025-06-30 13F AMPHENOL CORP CL A 032095101 41,449 283 0.69 4,093 51.59 0.2143
2025-05-07 2025-03-31 13F AMPHENOL CORP CL A 032095101 41,166 680 1.68 2,700 -3.95 0.1630
2025-01-28 2024-12-31 13F AMPHENOL CORP CL A 032095101 40,486 -521 -1.27 2,812 5.20 0.1627
2024-11-06 2024-09-30 13F AMPHENOL CORP CL A 032095101 41,007 854 2.13 2,672 -1.22 0.1558
2024-07-30 2024-06-30 13F AMPHENOL CORP CL A 032095101 40,153 18,680 86.99 2,705 9.25 0.1690
2024-05-06 2024-03-31 13F AMPHENOL CORP CL A 032095101 21,473 722 3.48 2,477 20.37 0.1520
2024-02-14 2023-12-31 13F AMPHENOL CORP CL A 032095101 20,751 134 0.65 2,057 18.83 0.1434
2023-11-02 2023-09-30 13F AMPHENOL CORP CL A 032095101 20,617 1,958 10.49 1,732 9.21 0.1272
2023-07-27 2023-06-30 13F AMPHENOL CORP CL A 032095101 18,659 2,090 12.61 1,585 17.06 0.1228
2023-04-05 2023-03-31 13F AMPHENOL CORP CL A 032095101 16,569 805 5.11 1,354 12.83 0.1268
2023-02-21 2022-12-31 13F/A-1 AMPHENOL CORP CL A 032095101 15,764 1,279 8.83 1,200 23.71 0.1243
2023-01-24 2022-12-31 13F AMPHENOL CORP CL A 032095101 15,764 1,279 1 0.1242
2022-11-04 2022-09-30 13F AMPHENOL CORP CL A 032095101 14,485 2,381 19.67 970 24.52 0.1150
2022-08-01 2022-06-30 13F AMPHENOL CORP CL A 032095101 12,104 651 5.68 779 -9.73 0.0993
2022-04-21 2022-03-31 13F AMPHENOL CORP CL A 032095101 11,453 1,238 12.12 863 -3.36 0.0967
2022-02-04 2021-12-31 13F AMPHENOL CORP CL A 032095101 10,215 2,698 35.89 893 62.36 0.1054
2021-11-12 2021-09-30 13F AMPHENOL CORP CL A 032095101 7,517 433 6.11 550 13.40 0.0829
2021-08-10 2021-06-30 13F/A-1 AMPHENOL CORP CL A 032095101 7,084 4,073 135.27 485 23.10 0.0791
2021-08-04 2021-06-30 13F AMPHENOL CORP CL A 032095101 3,011 0 394 0.0693
2021-05-13 2021-03-31 13F AMPHENOL CORP CL A 032095101 3,011 0 0.00 394 0.00 0.0693
2021-02-02 2020-12-31 13F AMPHENOL CORP CL A 032095101 3,011 526 21.17 394 46.47 0.0693
2020-10-28 2020-09-30 13F/A-1 AMPHENOL CORP CL A 032095101 2,485 2,485 269 0.0576
2017-05-11 2017-03-31 13F AMPHENOL CORP CL A 032095101 0 -140 -100.00 0 -100.00
2017-02-13 2016-12-31 13F AMPHENOL CORP CL A 032095101 140 140 10 0.0067
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.