Amphenol Corporation
US ˙ NYSE ˙ US0320951017

SecurityAPH / Amphenol Corporation
InstitutionJSF Financial, LLC
Latest Disclosed Ownership9,304 shares
Latest Disclosed Value $ 1,175,515
JSF Financial, LLC reports 26.10% increase in ownership of APH / Amphenol Corporation

On May 7, 2026 - JSF Financial, LLC filed a 13F-HR form disclosing ownership of 9,304 shares of Amphenol Corporation (US:APH) valued at $1,175,560 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 4, 2026 disclosing 7,378 shares of Amphenol Corporation. This represents a change in shares of 26.10% during the quarter. The current value of the position is $1,373,456 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)
2026-05-07 2026-03-31 13F AMPHENOL CL A 032095101 9,304 1,926 26.10 1,176 17.85 0.2305
2026-02-04 2025-12-31 13F AMPHENOL CORP CL A 032095101 7,378 145 2.00 997 11.40 0.2067
2025-11-03 2025-09-30 13F AMPHENOL CORP CL A 032095101 7,233 7,233 895 0.1986
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.