Comerica Bank reports 2.09% decrease in ownership of APH / Amphenol Corporation

Amphenol Corporation

US ˙ NYSE ˙ US0320951017

Security	APH / Amphenol Corporation
Institution	Comerica Bank
Latest Disclosed Ownership	321,316 shares
Latest Disclosed Value	$ 43,422,695

On January 29, 2026 - Comerica Bank filed a 13F-HR form disclosing ownership of 321,316 shares of Amphenol Corporation (US:APH) valued at $43,422,644 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 14, 2025 disclosing 328,166 shares of Amphenol Corporation. This represents a change in shares of -2.09% during the quarter. The current value of the position is $47,432,668 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	Reported Shares	ΔShares	ΔShares (%)	Reported Value (x1000)	ΔValue (%)	Alloc (%)
2026-01-29	2025-12-31	13F	AMPHENOL CORP	CL A	032095101	321,316	-6,850	-2.09	43,423	6.92	0.1732
2025-11-14	2025-09-30	13F	AMPHENOL CORP	CL A	032095101	328,166	-8,404	-2.50	40,611	22.19	0.1528
2025-08-14	2025-06-30	13F	AMPHENOL CORP	CL A	032095101	336,570	-13,730	-3.92	33,236	44.66	0.1290
2025-05-14	2025-03-31	13F	AMPHENOL CORP	CL A	032095101	350,300	-31,697	-8.30	22,976	-13.39	0.0965
2025-02-14	2024-12-31	13F/A-1	AMPHENOL CORP	CL A	032095101	381,997	-11,569	-2.94	26,530	3.45	0.1070
2025-02-14	2024-12-31	13F	AMPHENOL CORP	CL A	032095101	381,997	-11,569		26,530		0.0889
2024-11-14	2024-09-30	13F	AMPHENOL CORP	CL A	032095101	393,566	-12,366	-3.05	25,645	-6.23	0.1014
2024-08-15	2024-06-30	13F	AMPHENOL CORP CL A	COMMON	032095101	405,932	252,840	165.16	27,348	54.86	0.1138
2024-05-16	2024-03-31	13F	AMPHENOL CORP CL A	COMMON	032095101	153,092	-3,793	-2.42	17,659	13.55	0.0761
2024-02-14	2023-12-31	13F	AMPHENOL CORP CL A	COMMON	032095101	156,885	6,040	4.00	15,552	22.76	0.0716
2023-11-21	2023-09-30	13F	AMPHENOL CORP	COMMON	032095101	150,845	-32,795	-17.86	12,669		0.0660
2023-08-22	2023-06-30	13F	AMPHENOL CORP CL A	EQU	032095101	183,640	27,807	17.84	0	-100.00	0.0002
2023-01-26	2022-12-31	13F	AMPHENOL CORP CL A	COM	032095101	155,833	4,086	2.69	13	-99.89	0.0978
2022-10-28	2022-09-30	13F	AMPHENOL CORP CL A	COM	032095101	151,747	4,818	3.28	10,871	9.38	0.0916
2022-08-02	2022-06-30	13F	AMPHENOL CORP CL A	COM	032095101	146,929	-8,325	-5.36	9,939	-11.75	0.0816
2022-04-27	2022-03-31	13F	AMPHENOL CORP CL A	COM	032095101	155,254	-8,594	-5.25	11,262	-9.57	0.0817
2022-02-18	2021-12-31	13F	AMPHENOL CORP CL A	COM	032095101	163,848	-9,329	-5.39	12,454	-9.31	0.0917
2021-11-22	2021-09-30	13F	AMPHENOL CORP CL A	COM	032095101	173,177	-14,354	-7.65	13,732	-1.20	0.0827
2021-08-26	2021-06-30	13F	AMPHENOL CORP CL A	COM	032095101	187,531	-32,353	-14.71	13,899	-8.12	0.0830
2021-04-28	2021-03-31	13F	AMPHENOL CORP CL A	COM	032095101	219,884	120,969	122.30	15,128	15.66	0.0902
2021-01-28	2020-12-31	13F	AMPHENOL CORP CL A	COM	032095101	98,915	10,474	11.84	13,080	23.50	0.0830
2020-10-30	2020-09-30	13F	AMPHENOL CORP CL A	COM	032095101	88,441	-14,314	-13.93	10,591	-0.19	0.0769
2020-07-31	2020-06-30	13F	AMPHENOL CORP CL A	COM	032095101	102,755	6,990	7.30	10,611	28.59	0.0818
2020-05-01	2020-03-31	13F	AMPHENOL CORP CL A	COM	032095101	95,765	-4,489	-4.48	8,252	-19.20	0.0757
2020-02-07	2019-12-31	13F	AMPHENOL CORP CL A	COM	032095101	100,254	-3,548	-3.42	10,213	-3.34	0.0774
2019-10-31	2019-09-30	13F	AMPHENOL CORP CL A	COM	032095101	103,802	-3,048	-2.85	10,566	1.96	0.0835
2019-08-02	2019-06-30	13F	AMPHENOL CORP CL A	COM	032095101	106,850	-14,538	-11.98	10,363	-16.20	0.0830
2019-05-02	2019-03-31	13F	AMPHENOL CORP CL A	COM	032095101	121,388	-5,055	-4.00	12,366	13.64	0.1002
2019-02-06	2018-12-31	13F	AMPHENOL CORP CL A	COM	032095101	126,443	-3,892	-2.99	10,882	0.93	0.0924
2018-11-01	2018-09-30	13F	AMPHENOL CORP CL A	COM	032095101	130,335	-24,615	-15.89	10,782	-21.82	0.0870
2018-08-01	2018-06-30	13F	AMPHENOL CORP CL A	COM	032095101	154,950	-2,549	-1.62	13,791	1.58	0.0964
2018-05-01	2018-03-31	13F	AMPHENOL CORP CL A	COM	032095101	157,499	-9,254	-5.55	13,577	-10.72	0.0970
2018-02-02	2017-12-31	13F	AMPHENOL CORP CL A	COM	032095101	166,753	-8,506	-4.85	15,208	1.18	0.1013
2017-11-06	2017-09-30	13F	AMPHENOL CORP CL A	COM	032095101	175,259	-10,371	-5.59	15,030	7.04	0.1088
2017-08-03	2017-06-30	13F	AMPHENOL CORP CL A	COM	032095101	185,630	-6,634	-3.45	14,041	0.34	0.1051
2017-05-03	2017-03-31	13F	AMPHENOL CORP CL A	COM	032095101	192,264	2,354	1.24	13,993	8.19	0.1062
2017-02-08	2016-12-31	13F	AMPHENOL CORP CL A	COM	032095101	189,910	28,295	17.51	12,934	22.13	0.1023
2016-11-10	2016-09-30	13F	AMPHENOL CORP CL A	COM	032095101	161,615	3,373	2.13	10,590	11.26	0.6251
2016-08-11	2016-06-30	13F	AMPHENOL CORP CL A	COM	032095101	158,242	2,534	1.63	9,518	4.07	0.0822
2016-05-11	2016-03-31	13F	AMPHENOL CORP CL A	COM	032095101	155,708	-5,566	-3.45	9,146	21.64	0.0817
2016-02-05	2015-12-31	13F	AMPHENOL CORP CL A	COM	032095101	161,274	-27	-0.02	7,519	-8.53	0.0738
2015-11-12	2015-09-30	13F	AMPHENOL CORP CL A	COM	032095101	161,301	-165,725	-50.68	8,220	-56.64	0.0778
2015-08-13	2015-06-30	13F	AMPHENOL CORP CL A	COM	032095101	327,026	161,435	97.49	18,958	94.30	0.0814
2015-05-15	2015-03-31	13F	AMPHENOL CORP CL A	COM	032095101	165,591	-168,823	-50.48	9,757	-45.78	0.0826
2015-02-13	2014-12-31	13F	AMPHENOL CORP CL A	COM	032095101	334,414	233,459	231.25	17,996	78.51	0.0778
2014-10-21	2014-09-30	13F	AMPHENOL CORP CL A	COM	032095101	100,955	11,994	13.48	10,081	17.62	0.0890
2014-08-12	2014-06-30	13F	AMPHENOL CORP CL A	COM	032095101	88,961	-9,385	-9.54	8,571	-4.90	0.0729
2014-05-15	2014-03-31	13F	AMPHENOL CORP CL A	COM	032095101	98,346	2,334	2.43	9,013	5.26	0.0690
2014-02-11	2013-12-31	13F	AMPHENOL CORP CL A	COM	032095101	96,012	-2,681	-2.72	8,563	12.14	0.0664
2013-11-12	2013-09-30	13F	AMPHENOL CORP CL A	COM	032095101	98,693	-2,822	-2.78	7,636	-3.49	0.0531
2013-08-13	2013-06-30	13F/A-1	AMPHENOL CORP CL A	COM	032095101	101,515	101,515		7,912		0.0645
2013-08-08	2013-06-30	13F	AMPHENOL CORP CL A	COM	032095101	790,072			61,577

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.