Principal Financial Group Inc reports 5.30% increase in ownership of APH / Amphenol Corporation

암페놀 주식회사

MX ˙ BMV ˙ US0320951017

Security	MX:APH / Amphenol Corporation
Institution	Principal Financial Group Inc
Latest Disclosed Ownership	2,896,337 shares
Latest Disclosed Value	$ 365,954,412

On May 4, 2026 - Principal Financial Group Inc filed a 13F-HR form disclosing ownership of 2,896,337 shares of Amphenol Corporation (MX:APH) valued at $365,954,412 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 2,750,490 shares of Amphenol Corporation. This represents a change in shares of 5.30% during the quarter.

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 (%)
2026-05-04	2026-03-31	13F	AMPHENOL	CL A	032095101	2,896,337	145,847	5.30	365,954	-1.55	0.1954
2026-02-02	2025-12-31	13F	AMPHENOL CORP	CL A	032095101	2,750,490	70,938	2.65	371,704	12.10	0.1898
2025-11-04	2025-09-30	13F	AMPHENOL CORP	CL A	032095101	2,679,552	-61,340	-2.24	331,597	22.51	0.1672
2025-08-08	2025-06-30	13F	AMPHENOL CORP	CL A	032095101	2,740,892	-142,267	-4.93	270,665	43.13	0.1431
2025-04-28	2025-03-31	13F	AMPHENOL CORP	CL A	032095101	2,883,159	284,314	10.94	189,106	4.77	0.1061
2025-01-31	2024-12-31	13F	AMPHENOL CORP	CL A	032095101	2,598,845	7,522	0.29	180,490	6.89	0.0984
2024-10-31	2024-09-30	13F	AMPHENOL CORP	CL A	032095101	2,591,323	1,101,368	73.92	168,851	68.21	0.0930
2024-07-29	2024-06-30	13F	AMPHENOL CORP	CL A	032095101	1,489,955	705,699	89.98	100,378	10.96	0.0596
2024-04-29	2024-03-31	13F	AMPHENOL CORP	CL A	032095101	784,256	3,835	0.49	90,464	16.93	0.0532
2024-02-07	2023-12-31	13F	AMPHENOL CORP	CL A	032095101	780,421	-12,795	-1.61	77,363	16.12	0.0493
2023-11-02	2023-09-30	13F	AMPHENOL CORP	CL A	032095101	793,216	1,214	0.15	66,622	-0.98	0.0479
2023-08-07	2023-06-30	13F	AMPHENOL CORP	CL A	032095101	792,002	-12,032	-1.50	67,281	2.40	0.0460
2023-05-09	2023-03-31	13F	AMPHENOL CORP	CL A	032095101	804,034	-1,862	-0.23	65,706	7.08	0.0470
2023-02-09	2022-12-31	13F	AMPHENOL CORP	CL A	032095101	805,896	-14,750	-1.80	61,361	11.67	0.0462
2022-11-09	2022-09-30	13F	AMPHENOL CORP	CL A	032095101	820,646	46,661	6.03	54,950	10.28	0.0437
2022-08-10	2022-06-30	13F	AMPHENOL CORP	CL A	032095101	773,985	-32,092	-3.98	49,829	-17.96	0.0369
2022-05-09	2022-03-31	13F	AMPHENOL CORP	CL A	032095101	806,077	-15,390	-1.87	60,738	-15.46	0.0241
2022-05-09	2022-03-31	13F	AMPHENOL CORP	CL A	032095101	748,605			56,407
2022-02-09	2021-12-31	13F	AMPHENOL CORP	CL A	032095101	821,467	-18,608	-2.22	71,846	16.79	0.0429
2021-11-09	2021-09-30	13F	AMPHENOL CORP	CL A	032095101	840,075	74,853	9.78	61,519	17.52	0.0401
2021-08-10	2021-06-30	13F	AMPHENOL CORP	CL A	032095101	765,222	12,110	1.61	52,349	5.37	0.0338
2021-05-10	2021-03-31	13F	AMPHENOL CORP	CL A	032095101	753,112	345,650	84.83	49,682	-6.76	0.0351
2021-02-23	2020-12-31	13F/A-1	AMPHENOL CORP	CL A	032095101	407,462	-20,691	-4.83	53,284	14.95	0.0395
2021-02-08	2020-12-31	13F	AMPHENOL CORP	CL A	032095101	407,462	-20,691		53,284		20,962.7468
2020-11-06	2020-09-30	13F	AMPHENOL CORP	CL A	032095101	428,153	-24,039	-5.32	46,356	7.00	0.0390
2020-08-05	2020-06-30	13F	AMPHENOL CORP	CL A	032095101	452,192	14,347	3.28	43,325	35.77	0.0384
2020-05-12	2020-03-31	13F	AMPHENOL CORP	CL A	032095101	437,845	9,935	2.32	31,910	-31.10	0.0353
2020-02-05	2019-12-31	13F	AMPHENOL CORP	CL A	032095101	427,910	-25,488	-5.62	46,313	5.85	0.0386
2019-11-13	2019-09-30	13F	AMPHENOL CORP	CL A	032095101	453,398	6,965	1.56	43,753	2.16	0.0386
2019-08-12	2019-06-30	13F	AMPHENOL CORP	CL A	032095101	446,433	-1,475	-0.33	42,830	1.25	0.0385
2019-05-10	2019-03-31	13F	AMPHENOL CORP	CL A	032095101	447,908	-6,579	-1.45	42,301	14.88	0.0394
2019-02-14	2018-12-31	13F	AMPHENOL CORP	CL A	032095101	454,487	-5,008	-1.09	36,823	-14.77	0.0392
2018-11-14	2018-09-30	13F	AMPHENOL CORP	CL A	032095101	459,495	6,699	1.48	43,202	9.48	0.0381
2018-08-13	2018-06-30	13F	AMPHENOL CORP	CL A	032095101	452,796	-10,486	-2.26	39,461	-1.11	0.0363
2018-05-14	2018-03-31	13F	AMPHENOL CORP	CL A	032095101	463,282	187	0.04	39,903	-1.86	0.0384
2018-02-12	2017-12-31	13F	AMPHENOL CORP	CL A	032095101	463,095	1,831	0.40	40,660	4.14	0.0374
2017-11-02	2017-09-30	13F	AMPHENOL CORP	CL A	032095101	461,264	-19,335	-4.02	39,042	10.05	0.0379
2017-08-08	2017-06-30	13F	AMPHENOL CORP	CL A	032095101	480,599	6,205	1.31	35,478	5.08	0.0356
2017-05-11	2017-03-31	13F	AMPHENOL CORP	CL A	032095101	474,394	2,345	0.50	33,763	6.43	0.0406
2017-02-13	2016-12-31	13F	AMPHENOL CORP	CL A	032095101	472,049	-12,328	-2.55	31,722	0.88	0.0402
2016-11-10	2016-09-30	13F	AMPHENOL CORP	CL A	032095101	484,377	9,975	2.10	31,445	15.62	0.0415
2016-08-09	2016-06-30	13F	AMPHENOL CORP	CL A	032095101	474,402	15,602	3.40	27,197	2.53	0.0379
2016-05-10	2016-03-31	13F	AMPHENOL CORP	CL A	032095101	458,800	11,294	2.52	26,527	13.49	0.0385
2016-02-09	2015-12-31	13F	AMPHENOL CORP	CL A	032095101	447,506	7,392	1.68	23,373	4.21	0.0347
2015-11-12	2015-09-30	13F/A-1	AMPHENOL CORP	CL A	032095101	440,114	-1,750	-0.40	22,428	-12.44	0.0352
2015-11-09	2015-09-30	13F	AMPHENOL CORP	CL A	032095101	440,114			22,428
2015-08-10	2015-06-30	13F	AMPHENOL CORP	CL A	032095101	441,864	10,007	2.32	25,615	0.65	0.0382
2015-05-14	2015-03-31	13F/A-1	AMPHENOL CORP	CL A	032095101	431,857	8,149	1.92	25,449	11.62	0.0379
2015-05-12	2015-03-31	13F	AMPHENOL CORP	CL A	032095101	431,857			25,449
2015-02-12	2014-12-31	13F	AMPHENOL CORP	CL A	032095101	423,708	215,031	103.04	22,800	9.42	0.0354
2014-11-13	2014-09-30	13F	AMPHENOL CORP	CL A	032095101	208,677	2,551	1.24	20,838	4.94	0.0354
2014-08-12	2014-06-30	13F	AMPHENOL CORP	CL A	032095101	206,126	-4,255	-2.02	19,858	2.99	0.0334
2014-05-13	2014-03-31	13F	AMPHENOL CORP	CL A	032095101	210,381	5,449	2.66	19,282	5.50	0.0344
2014-02-12	2013-12-31	13F	AMPHENOL CORP	CL A	032095101	204,932	-5,507	-2.62	18,276	12.24	0.0341
2013-11-05	2013-09-30	13F	AMPHENOL CORP	CL A	032095101	210,439	3,605	1.74	16,283	1.00	0.0336
2013-08-12	2013-06-30	13F	AMPHENOL CORP	CL A	032095101	206,834	206,834		16,121		0.0357

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.