Amphenol Corporation
US ˙ NYSE ˙ US0320951017

SecurityAPH / Amphenol Corporation
InstitutionConnable Office Inc
Latest Disclosed Ownership37,166 shares
Latest Disclosed Value $ 4,695,924
Connable Office Inc reports 18.62% decrease in ownership of APH / Amphenol Corporation

On April 29, 2026 - Connable Office Inc filed a 13F-HR form disclosing ownership of 37,166 shares of Amphenol Corporation (US:APH) valued at $4,695,924 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 3, 2026 disclosing 45,667 shares of Amphenol Corporation. This represents a change in shares of -18.62% during the quarter. The current value of the position is $5,486,445 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)
2026-04-29 2026-03-31 13F Amphenol Com 032095101 37,166 -8,501 -18.62 4,696 -23.92 0.4620
2026-02-03 2025-12-31 13F Amphenol Com 032095101 45,667 -79 -0.17 6,171 9.01 0.5658
2025-11-06 2025-09-30 13F Amphenol Com 032095101 45,746 195 0.43 5,661 25.86 0.5251
2025-08-05 2025-06-30 13F Amphenol Com 032095101 45,551 155 0.34 4,498 51.09 0.4452
2025-05-09 2025-03-31 13F Amphenol Com 032095101 45,396 -2,348 -4.92 2,978 -10.20 0.3170
2025-02-05 2024-12-31 13F Amphenol Com 032095101 47,744 -646 -1.33 3,316 5.14 0.3431
2024-11-06 2024-09-30 13F Amphenol Com 032095101 48,390 15,516 47.20 3,153 42.41 0.3174
2024-08-07 2024-06-30 13F Amphenol Com 032095101 32,874 12,747 63.33 2,215 -4.61 0.2383
2024-04-30 2024-03-31 13F Amphenol Com 032095101 20,127 20,127 2,322 0.2630
2020-11-10 2020-09-30 13F Amphenol Com 032095101 0 -14,488 -100.00 0 -100.00
2020-08-10 2020-06-30 13F Amphenol Com 032095101 14,488 -5,580 -27.81 1,388 -5.13 0.2729
2020-05-08 2020-03-31 13F Amphenol Com 032095101 20,068 -58 -0.29 1,463 -32.83 0.3496
2020-02-07 2019-12-31 13F Amphenol Com 032095101 20,126 -93 -0.46 2,178 11.64 0.3734
2019-11-12 2019-09-30 13F Amphenol Com 032095101 20,219 0 0.00 1,951 0.57 0.3517
2019-08-06 2019-06-30 13F Amphenol Com 032095101 20,219 -11 -0.05 1,940 1.52 0.3565
2019-05-07 2019-03-31 13F Amphenol Com 032095101 20,230 -109 -0.54 1,911 15.96 0.3709
2019-02-12 2018-12-31 13F Amphenol Com 032095101 20,339 -6,220 -23.42 1,648 -34.00 0.3643
2018-11-06 2018-09-30 13F Amphenol Com 032095101 26,559 -2,310 -8.00 2,497 -0.76 0.4793
2018-08-07 2018-06-30 13F Amphenol Com 032095101 28,869 -4,271 -12.89 2,516 -11.84 0.5099
2018-05-08 2018-03-31 13F Amphenol Com 032095101 33,140 276 0.84 2,854 -1.07 0.5611
2018-02-07 2017-12-31 13F Amphenol Com 032095101 32,864 -842 -2.50 2,885 1.12 0.5615
2017-11-03 2017-09-30 13F Amphenol Com 032095101 33,706 601 1.82 2,853 16.73 0.5833
2017-08-01 2017-06-30 13F Amphenol Com 032095101 33,105 0 0.00 2,444 3.74 0.5352
2017-05-04 2017-03-31 13F Amphenol Com 032095101 33,105 0 0.00 2,356 5.89 0.5313
2017-02-08 2016-12-31 13F Amphenol Com 032095101 33,105 2,970 9.86 2,225 13.75 0.5108
2016-11-08 2016-09-30 13F Amphenol Com 032095101 30,135 5,090 20.32 1,956 36.21 0.4664
2016-08-04 2016-06-30 13F Amphenol Com 032095101 25,045 25,045 1,436 0.4009
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.