Amphenol Corporation
MX ˙ BMV ˙ US0320951017
SecurityMX:APH / Amphenol Corporation
InstitutionWinton Capital Group Ltd
Latest Disclosed Ownership87,673 shares
Latest Disclosed Value $ 11,077,484
Winton Capital Group Ltd reports 21.32% decrease in ownership of APH / Amphenol Corporation

On May 12, 2026 - Winton Capital Group Ltd filed a 13F-HR form disclosing ownership of 87,673 shares of Amphenol Corporation (MX:APH) valued at $11,077,484 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 111,423 shares of Amphenol Corporation. This represents a change in shares of -21.32% 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)
2026-05-12 2026-03-31 13F AMPHENOL CL A 032095101 87,673 -23,750 -21.32 11,077 -26.43 0.3886
2026-02-11 2025-12-31 13F AMPHENOL CORP CL A 032095101 111,423 106,058 1,976.85 15,058 2,171.04 0.5198
2025-11-13 2025-09-30 13F AMPHENOL CORP CL A 032095101 5,365 5,365 664 0.0249
2025-08-14 2025-06-30 13F AMPHENOL CORP CL A 032095101 0 -31,505 -100.00 0 -100.00
2025-05-15 2025-03-31 13F AMPHENOL CORP CL A 032095101 31,505 31,505 2,066 0.1258
2025-02-12 2024-12-31 13F AMPHENOL CORP CL A 032095101 0 -283,637 -100.00 0 -100.00
2024-11-12 2024-09-30 13F AMPHENOL CORP CL A 032095101 283,637 12,936 4.78 18,482 1.34 1.2949
2024-08-09 2024-06-30 13F AMPHENOL CORP CL A 032095101 270,701 270,701 18,237 1.2318
2023-05-12 2023-03-31 13F AMPHENOL CORP CL A 032095101 0 -19,557 -100.00 0 -100.00
2023-02-14 2022-12-31 13F AMPHENOL CORP CL A 032095101 19,557 5,349 37.65 1,489 56.57 0.0981
2022-11-10 2022-09-30 13F AMPHENOL CORP CL A 032095101 14,208 14,208 951 0.0621
2022-05-11 2022-03-31 13F AMPHENOL CORP CL A 032095101 0 -19,384 -100.00 0 -100.00
2022-02-10 2021-12-31 13F AMPHENOL CORP CL A 032095101 19,384 11,679 151.58 1,695 200.53 0.1027
2021-10-28 2021-09-30 13F AMPHENOL CORP CL A 032095101 7,705 -174,313 -95.77 564 -95.47 0.0316
2021-08-10 2021-06-30 13F AMPHENOL CORP CL A 032095101 182,018 13,631 8.10 12,452 12.10 0.6685
2021-07-21 2021-03-31 13F AMPHENOL CORP CL A 032095101 168,387 165,305 5,363.56 11,108 2,656.33 0.6337
2021-02-12 2020-12-31 13F AMPHENOL CORP CL A 032095101 3,082 -8,830 -74.13 403 -68.76 0.0291
2020-10-30 2020-09-30 13F AMPHENOL CORP CL A 032095101 11,912 -12,182 -50.56 1,290 -44.11 0.0419
2020-08-05 2020-06-30 13F AMPHENOL CORP CL A 032095101 24,094 17,067 242.88 2,308 350.78 0.0596
2020-05-11 2020-03-31 13F AMPHENOL CORP CL A 032095101 7,027 7,027 512 0.0135
2020-02-13 2019-12-31 13F AMPHENOL CORP CL A 032095101 0 -13,180 -100.00 0 -100.00
2019-11-08 2019-09-30 13F AMPHENOL CORP CL A 032095101 13,180 -19,743 -59.97 1,272 -59.73 0.0150
2019-07-08 2019-06-30 13F AMPHENOL CORP CL A 032095101 32,923 -71,180 -68.37 3,159 -67.87 0.0614
2019-05-13 2019-03-31 13F AMPHENOL CORP CL A 032095101 104,103 -72,270 -40.98 9,831 -31.20 0.1977
2019-02-05 2018-12-31 13F AMPHENOL CORP CL A 032095101 176,373 -27,087 -13.31 14,290 -25.30 0.3079
2018-11-02 2018-09-30 13F AMPHENOL CORP CL A 032095101 203,460 105,879 108.50 19,129 124.94 0.4008
2018-08-20 2018-06-30 13F AMPHENOL CORP CL A 032095101 97,581 -66,242 -40.44 8,504 -39.73 0.2173
2018-05-21 2018-03-31 13F AMPHENOL CORP CL A 032095101 163,823 160,463 4,775.68 14,110 4,683.05 0.3984
2018-02-13 2017-12-31 13F AMPHENOL CORP CL A 032095101 3,360 -2,828 -45.70 295 -43.70 0.0085
2017-11-13 2017-09-30 13F AMPHENOL CORP CL A 032095101 6,188 -4,215 -40.52 524 -31.77 0.0167
2017-08-17 2017-06-30 13F AMPHENOL CORP CL A 032095101 10,403 -19,558 -65.28 768 -63.98 0.0226
2017-05-19 2017-03-31 13F/A-1 AMPHENOL CORP CL A 032095101 29,961 -90,501 -75.13 2,132 -73.66 0.0580
2017-05-12 2017-03-31 13F AMPHENOL CORP CL A 032095101 64,620 4,195
2017-02-13 2016-12-31 13F AMPHENOL CORP CL A 032095101 120,462 55,842 86.42 8,095 92.97 0.2672
2016-11-08 2016-09-30 13F AMPHENOL CORP CL A 032095101 64,620 64,620 0.00 4,195 0.0721
2016-08-12 2016-06-30 13F AMPHENOL CORP CL A 032095101 0 -214,148 -100.00 0 -100.00
2016-05-06 2016-03-31 13F AMPHENOL CORP CL A 032095101 214,148 -657,631 -75.44 12,382 -72.81 0.1342
2016-02-08 2015-12-31 13F AMPHENOL CORP CL A 032095101 871,779 181,298 26.26 45,533 29.40 0.4047
2015-11-10 2015-09-30 13F AMPHENOL CORP CL A 032095101 690,481 547,568 383.15 35,187 324.71 0.2783
2015-08-06 2015-06-30 13F AMPHENOL CORP CL A 032095101 142,913 -445,690 -75.72 8,285 -76.11 0.0761
2015-05-12 2015-03-31 13F AMPHENOL CORP CL A 032095101 588,603 266,012 82.46 34,686 99.82 0.2762
2015-03-16 2014-12-31 13F/A-1 AMPHENOL CORP CL A 032095101 322,591 -111,681 -25.72 17,359 -59.97 0.2149
2015-02-13 2014-12-31 13F AMPHENOL CORP CL A 032095101 355,837 19,148
2014-10-28 2014-09-30 13F AMPHENOL CORP CL A 032095101 434,272 214,721 97.80 43,366 105.02 0.3102
2014-08-05 2014-06-30 13F AMPHENOL CORP CL A 032095101 219,551 219,551 21,152 0.1442
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.