Amphenol Corporation
US ˙ NYSE ˙ US0320951017

SecurityAPH / Amphenol Corporation
InstitutionAlly Financial Inc.
Latest Disclosed Ownership8,000 shares
Latest Disclosed Value $ 1,010,800
Ally Financial Inc. ownership in APH / Amphenol Corporation

On May 12, 2026 - Ally Financial Inc. filed a 13F-HR form disclosing ownership of 8,000 shares of Amphenol Corporation (US:APH) valued at $1,010,800 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2021 disclosing 0 shares of Amphenol Corporation. The current value of the position is $1,180,960 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)
2026-05-12 2026-03-31 13F Amphenol COM 032095101 8,000 8,000 1,011 0.1258
2021-02-12 2020-12-31 13F Amphenol COM 032095101 0 -15,000 -100.00 0 -100.00
2020-11-13 2020-09-30 13F Amphenol COM 032095101 15,000 0 0.00 1,624 13.01 0.2614
2020-08-13 2020-06-30 13F Amphenol COM 032095101 15,000 0 0.00 1,437 31.47 0.2365
2020-05-14 2020-03-31 13F Amphenol COM 032095101 15,000 0 0.00 1,093 -32.66 0.1167
2020-02-13 2019-12-31 13F Amphenol COM 032095101 15,000 0 0.00 1,623 12.09 0.2667
2019-11-13 2019-09-30 13F Amphenol COM 032095101 15,000 0 0.00 1,448 0.63 0.2575
2019-08-13 2019-06-30 13F Amphenol COM 032095101 15,000 7,000 87.50 1,439 90.34 0.2473
2019-05-14 2019-03-31 13F Amphenol COM 032095101 8,000 0 0.00 756 16.67 0.1441
2019-02-13 2018-12-31 13F Amphenol COM 032095101 8,000 500 6.67 648 -8.09 0.0846
2018-11-13 2018-09-30 13F Amphenol COM 032095101 7,500 0 0.00 705 7.80 0.1401
2018-08-13 2018-06-30 13F Amphenol COM 032095101 7,500 2,500 50.00 654 51.74 0.1285
2018-05-14 2018-03-31 13F Amphenol COM 032095101 5,000 5,000 431 0.0646
2016-11-14 2016-09-30 13F Amphenol COM 032095101 0 -30,000 -100.00 0 -100.00
2016-08-12 2016-06-30 13F Amphenol COM 032095101 30,000 0 0.00 1,720 -0.86 0.2872
2016-05-13 2016-03-31 13F Amphenol COM 032095101 30,000 0 0.00 1,735 10.72 0.2423
2016-02-12 2015-12-31 13F Amphenol COM 032095101 30,000 0 0.00 1,567 2.49 0.2187
2015-11-13 2015-09-30 13F Amphenol COM 032095101 30,000 30,000 0.00 1,529 0.1552
2015-05-15 2015-03-31 13F Amphenol COM 032095101 0 -27,212 -100.00 0 -100.00
2015-02-13 2014-12-31 13F Amphenol COM 032095101 27,212 -7,788 -22.25 1,464 -53.09 0.1616
2014-02-14 2013-12-31 13F Amphenol COM 032095101 35,000 0 0.00 3,121 15.25 0.3321
2013-11-14 2013-09-30 13F Amphenol COM 032095101 35,000 35,000 2,708 0.2951
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.