Amphenol Corporation
US ˙ NYSE ˙ US0320951017

SecurityAPH / Amphenol Corporation
InstitutionTranquility Partners, LLC
Latest Disclosed Ownership7,496 shares
Latest Disclosed Value $ 947,120
Tranquility Partners, LLC reports 42.66% decrease in ownership of APH / Amphenol Corporation

On April 20, 2026 - Tranquility Partners, LLC filed a 13F-HR form disclosing ownership of 7,496 shares of Amphenol Corporation (US:APH) valued at $947,120 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 3, 2026 disclosing 13,073 shares of Amphenol Corporation. This represents a change in shares of -42.66% during the quarter. The current value of the position is $1,106,560 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)
2026-04-20 2026-03-31 13F AMPHENOL CL A 032095101 7,496 -5,577 -42.66 947 -46.38 0.3573
2026-02-03 2025-12-31 13F AMPHENOL CORP CL A 032095101 13,073 500 3.98 1,767 13.57 0.6364
2025-10-30 2025-09-30 13F AMPHENOL CORP CL A 032095101 12,573 -813 -6.07 1,556 17.71 0.5253
2025-07-25 2025-06-30 13F AMPHENOL CORP CL A 032095101 13,386 107 0.81 1,322 51.84 0.4721
2025-04-24 2025-03-31 13F AMPHENOL CORP CL A 032095101 13,279 -238 -1.76 871 -7.25 0.3364
2025-01-29 2024-12-31 13F AMPHENOL CORP CL A 032095101 13,517 -469 -3.35 939 2.96 0.3530
2024-11-07 2024-09-30 13F AMPHENOL CORP CL A 032095101 13,986 -298 -2.09 911 -5.30 0.3304
2024-07-25 2024-06-30 13F AMPHENOL CORP CL A 032095101 14,284 7,142 100.00 962 16.89 0.3702
2024-05-07 2024-03-31 13F AMPHENOL CORP CL A 032095101 7,142 -1,399 -16.38 824 -2.72 0.3184
2024-01-31 2023-12-31 13F AMPHENOL CORP CL A 032095101 8,541 -311 -3.51 847 13.86 0.3550
2023-10-31 2023-09-30 13F AMPHENOL CORP CL A 032095101 8,852 -25 -0.28 743 -1.46 0.3187
2023-07-17 2023-06-30 13F AMPHENOL CORP CL A 032095101 8,877 163 1.87 754 5.90 0.3248
2023-05-08 2023-03-31 13F AMPHENOL CORP CL A 032095101 8,714 85 0.99 712 8.37 0.3393
2023-02-02 2022-12-31 13F AMPHENOL CORP CL A 032095101 8,629 -88 -1.01 657 12.50 0.3342
2022-11-01 2022-09-30 13F AMPHENOL CORP CL A 032095101 8,717 -3 -0.03 584 4.10 0.3250
2022-08-01 2022-06-30 13F AMPHENOL CORP CL A 032095101 8,720 -262 -2.92 561 -17.13 0.2902
2022-04-29 2022-03-31 13F AMPHENOL CORP CL A 032095101 8,982 -3,281 -26.76 677 -36.91 0.3170
2022-01-31 2021-12-31 13F AMPHENOL CORP CL A 032095101 12,263 490 4.16 1,073 24.48 0.4966
2021-10-20 2021-09-30 13F AMPHENOL CORP CL A 032095101 11,773 585 5.23 862 12.68 0.4374
2021-07-23 2021-06-30 13F AMPHENOL CORP CL A 032095101 11,188 370 3.42 765 7.14 0.4298
2021-04-30 2021-03-31 13F AMPHENOL CORP CL A 032095101 10,818 5,679 110.51 714 6.25 0.4440
2021-01-29 2020-12-31 13F AMPHENOL CORP CL A 032095101 5,139 0 0.00 672 20.86 0.4748
2020-11-10 2020-09-30 13F AMPHENOL CORP CL A 032095101 5,139 150 3.01 556 16.32 0.4724
2020-07-29 2020-06-30 13F AMPHENOL CORP CL A 032095101 4,989 -185 -3.58 478 26.79 0.4501
2020-04-20 2020-03-31 13F AMPHENOL CORP CL A 032095101 5,174 0 0.00 377 -32.68 0.4339
2020-02-03 2019-12-31 13F AMPHENOL CORP CL A 032095101 5,174 0 0.00 560 12.22 0.5056
2019-11-14 2019-09-30 13F AMPHENOL CORP CL A 032095101 5,174 0 0.00 499 0.60 0.5289
2019-08-13 2019-06-30 13F AMPHENOL CORP CL A 032095101 5,174 5,174 496 0.5347
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.