Amphenol Corporation
US ˙ NYSE ˙ US0320951017

SecurityAPH / Amphenol Corporation
InstitutionShell Asset Management Co
Latest Disclosed Ownership11,233 shares
Latest Disclosed Value $ 1,390
Shell Asset Management Co reports 91.94% decrease in ownership of APH / Amphenol Corporation

On November 7, 2025 - Shell Asset Management Co filed a 13F-HR form disclosing ownership of 11,233 shares of Amphenol Corporation (US:APH) valued at $1,390,084 USD as of September 30, 2025. The entity filed a previous 13F-HR on July 23, 2025 disclosing 139,290 shares of Amphenol Corporation. This represents a change in shares of -91.94% during the quarter. The current value of the position is $1,648,667 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)
2025-11-07 2025-09-30 13F AMPHENOL CORP CL A 032095101 11,233 -128,057 -91.94 1 -92.31 0.1396
2025-07-23 2025-06-30 13F AMPHENOL CORP CL A 032095101 139,290 -8,542 -5.78 14 44.44 0.4750
2025-05-14 2025-03-31 13F AMPHENOL CORP CL A 032095101 147,832 -5,500 -3.59 10 -10.00 0.4604
2025-02-14 2024-12-31 13F AMPHENOL CORP CL A 032095101 153,332 70,869 85.94 11 100.00 0.4652
2024-11-07 2024-09-30 13F AMPHENOL CORP CL A 032095101 82,463 -1,841 -2.18 5 0.00 0.2365
2024-07-25 2024-03-31 13F AMPHENOL CORP CL A 032095101 84,304 76,437 971.62 6 0.2586
2024-02-14 2023-12-31 13F AMPHENOL CORP CL A 032095101 7,867 4,423 128.43 1 0.0360
2023-11-08 2023-09-30 13F AMPHENOL CORP CL A 032095101 3,444 -221 -6.03 0 0.0119
2023-07-28 2023-06-30 13F AMPHENOL CORP CL A 032095101 3,665 3,665 0 0.0123
2021-11-04 2021-09-30 13F AMPHENOL CORP CL A 032095101 0 -27,811 -100.00 0 -100.00
2021-08-12 2021-06-30 13F AMPHENOL CORP CL A 032095101 27,811 -18,527 -39.98 1,903 -37.75 0.0369
2021-05-10 2021-03-31 13F AMPHENOL CORP CL A 032095101 46,338 -35,426 -43.33 3,057 -71.41 0.0612
2021-02-16 2020-12-31 13F AMPHENOL CORP CL A 032095101 81,764 -14,759 -15.29 10,692 2.31 0.2208
2020-11-13 2020-09-30 13F AMPHENOL CORP CL A 032095101 96,523 4,832 5.27 10,451 18.96 0.2430
2020-08-10 2020-06-30 13F AMPHENOL CORP CL A 032095101 91,691 32,245 54.24 8,785 102.79 0.2193
2020-05-11 2020-03-31 13F AMPHENOL CORP CL A 032095101 59,446 -3,038 -4.86 4,332 -35.95 0.1207
2020-02-13 2019-12-31 13F AMPHENOL CORP CL A 032095101 62,484 -563 -0.89 6,763 11.16 0.1457
2019-11-12 2019-09-30 13F AMPHENOL CORP CL A 032095101 63,047 -11,086 -14.95 6,084 -14.45 0.1389
2019-08-12 2019-06-30 13F AMPHENOL CORP CL A 032095101 74,133 5,789 8.47 7,112 10.20 0.1574
2019-05-09 2019-03-31 13F AMPHENOL CORP CL A 032095101 68,344 520 0.77 6,454 17.45 0.1423
2019-02-13 2018-12-31 13F AMPHENOL CORP CL A 032095101 67,824 -2,204 -3.15 5,495 -16.54 0.1370
2018-11-13 2018-09-30 13F AMPHENOL CORP CL A 032095101 70,028 -3,382 -4.61 6,584 2.91 0.1299
2018-08-10 2018-06-30 13F AMPHENOL CORP CL A 032095101 73,410 8,958 13.90 6,398 15.26 0.1312
2018-05-14 2018-03-31 13F AMPHENOL CORP CL A 032095101 64,452 1,394 2.21 5,551 0.27 0.1105
2018-02-09 2017-12-31 13F AMPHENOL CORP CL A 032095101 63,058 44,958 248.39 5,536 261.36 0.1099
2017-10-20 2017-09-30 13F/A-1 AMPHENOL CORP CL A 032095101 18,100 -3,644 -16.76 1,532 -4.55 0.0341
2017-10-20 2017-06-30 13F/A-1 AMPHENOL CORP CL A 032095101 21,744 48 0.22 1,605 3.95 0.2463
2017-10-20 2017-03-31 13F/A-1 AMPHENOL CORP CL A 032095101 21,696 -406 -1.84 1,544 3.97 0.2437
2017-10-20 2016-12-31 13F/A-1 AMPHENOL CORP CL A 032095101 22,102 -7,139 -24.41 1,485 -21.76 0.2619
2017-10-20 2016-09-30 13F/A-1 AMPHENOL CORP CL A 032095101 29,241 29,241 1,898 0.2984
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.