Aviva Plc reports 3.13% increase in ownership of APH / Amphenol Corporation

Amphenol Corporation

US ˙ NYSE ˙ US0320951017

Security	APH / Amphenol Corporation
Institution	Aviva Plc
Latest Disclosed Ownership	1,027,242 shares
Latest Disclosed Value	$ 129,792,027

On May 14, 2026 - Aviva Plc filed a 13F-HR form disclosing ownership of 1,027,242 shares of Amphenol Corporation (US:APH) valued at $129,792,027 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 996,038 shares of Amphenol Corporation. This represents a change in shares of 3.13% during the quarter. The current value of the position is $151,641,464 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 (%)
2026-05-14	2026-03-31	13F	AMPHENOL	CL A	032095101	1,027,242	31,204	3.13	129,792	-3.57	0.2177
2026-02-12	2025-12-31	13F	AMPHENOL CORP	CL A	032095101	996,038	56,732	6.04	134,605	15.80	0.2270
2025-11-13	2025-09-30	13F	AMPHENOL CORP	CL A	032095101	939,306	81,665	9.52	116,239	37.25	0.2113
2025-08-07	2025-06-30	13F	AMPHENOL CORP	CL A	032095101	857,641	524,952	157.79	84,692	288.12	0.1749
2025-05-15	2025-03-31	13F	AMPHENOL CORP	CL A	032095101	332,689	43,105	14.89	21,821	8.50	0.0526
2025-02-13	2024-12-31	13F	AMPHENOL CORP	CL A	032095101	289,584	-10,348	-3.45	20,112	2.91	0.0522
2024-11-14	2024-09-30	13F	AMPHENOL CORP	CL A	032095101	299,932	-300,120	-50.02	19,544	-51.66	0.0506
2024-08-02	2024-06-30	13F	AMPHENOL CORP	CL A	032095101	600,052	352,195	142.10	40,426	41.40	0.1121
2024-05-14	2024-03-31	13F	AMPHENOL CORP	CL A	032095101	247,857	59,655	31.70	28,590	53.25	0.0941
2024-02-09	2023-12-31	13F	AMPHENOL CORP	CL A	032095101	188,202	-22,992	-10.89	18,656	5.18	0.0669
2023-11-13	2023-09-30	13F	AMPHENOL CORP	CL A	032095101	211,194	140,859	200.27	17,738	196.92	0.0746
2023-08-10	2023-06-30	13F	AMPHENOL CORP	CL A	032095101	70,335	7,274	11.53	5,975	15.93	0.0243
2023-05-12	2023-03-31	13F	AMPHENOL CORP	CL A	032095101	63,061	-43,128	-40.61	5,153	-36.26	0.0233
2023-02-14	2022-12-31	13F/A-2	AMPHENOL CORP	CL A	032095101	106,189	-8,156	-7.13	8,085	5.59	0.0398
2023-02-10	2022-12-31	13F/A-1	AMPHENOL CORP	CL A	032095101	106,189	-8,156		43,197		0.2060
2023-02-09	2022-12-31	13F	AMPHENOL CORP	CL A	032095101	106,189	-8,156		8		0.0388
2022-11-14	2022-09-30	13F	AMPHENOL CORP	CL A	032095101	114,345	31,709	38.37	7,657	43.93	0.0441
2022-08-04	2022-06-30	13F	AMPHENOL CORP	CL A	032095101	82,636	-33,278	-28.71	5,320	-39.09	0.0283
2022-05-13	2022-03-31	13F	AMPHENOL CORP	CL A	032095101	115,914	-62,692	-35.10	8,734	-44.09	0.0437
2022-02-10	2021-12-31	13F	AMPHENOL CORP	CL A	032095101	178,606	-23	-0.01	15,621	19.42	0.0655
2021-11-12	2021-09-30	13F	AMPHENOL CORP	CL A	032095101	178,629	-9,536	-5.07	13,081	1.62	0.0583
2021-08-10	2021-06-30	13F	AMPHENOL CORP	CL A	032095101	188,165	-24,872	-11.67	12,872	-8.41	0.0565
2021-05-13	2021-03-31	13F	AMPHENOL CORP	CL A	032095101	213,037	104,646	96.54	14,054	-0.85	0.0686
2021-02-10	2020-12-31	13F	AMPHENOL CORP	CL A	032095101	108,391	-6,519	-5.67	14,174	13.93	0.0737
2020-11-12	2020-09-30	13F	AMPHENOL CORP	CL A	032095101	114,910	-5,317	-4.42	12,441	8.00	0.0734
2020-08-13	2020-06-30	13F/A-1	AMPHENOL CORP	CL A	032095101	120,227	-31,445	-20.73	11,519	4.21	0.0718
2020-08-13	2020-06-30	13F	AMPHENOL CORP	CL A	032095101	120,227	-31,445		11,519		34,872.9535
2020-05-14	2020-03-31	13F	AMPHENOL CORP	CL A	032095101	151,672	30,714	25.39	11,054	-15.56	0.0810
2020-02-10	2019-12-31	13F	AMPHENOL CORP	CL A	032095101	120,958	18,280	17.80	13,091	32.13	0.0793
2019-11-12	2019-09-30	13F	AMPHENOL CORP	CL A	032095101	102,678	-5,820	-5.36	9,908	-4.81	0.0671
2019-07-30	2019-06-30	13F	AMPHENOL CORP	CL A	032095101	108,498	-3,083	-2.76	10,409	-1.22	0.0715
2019-05-14	2019-03-31	13F	AMPHENOL CORP	CL A	032095101	111,581	1,092	0.99	10,538	17.72	0.0707
2019-02-12	2018-12-31	13F	AMPHENOL CORP	CL A	032095101	110,489	-557,681	-83.46	8,952	-85.75	0.0668
2018-11-13	2018-09-30	13F	AMPHENOL CORP	CL A	032095101	668,170	-6,509	-0.96	62,821	6.84	0.3444
2018-08-01	2018-06-30	13F	AMPHENOL CORP	CL A	032095101	674,679	-210,435	-23.77	58,798	-22.87	0.3470
2018-05-14	2018-03-31	13F	AMPHENOL CORP	CL A	032095101	885,114	187,410	26.86	76,235	24.45	0.4661
2018-02-13	2017-12-31	13F	AMPHENOL CORP	CL A	032095101	697,704	3,994	0.58	61,258	4.32	0.3468
2017-11-13	2017-09-30	13F	AMPHENOL CORP	CL A	032095101	693,710	-130	-0.02	58,723	14.60	0.3160
2017-08-07	2017-06-30	13F	AMPHENOL CORP	CL A	032095101	693,840	26,000	3.89	51,240	7.82	0.2864
2017-05-15	2017-03-31	13F	AMPHENOL CORP	CL A	032095101	667,840	305,770	84.45	47,523	95.29	0.2720
2017-02-13	2016-12-31	13F	AMPHENOL CORP	CL A	032095101	362,070	-57,183	-13.64	24,335	-10.58	0.1454
2016-11-14	2016-09-30	13F	AMPHENOL CORP	CL A	032095101	419,253	-43,118	-9.33	27,214	2.66	0.1698
2016-08-05	2016-06-30	13F	AMPHENOL CORP	CL A	032095101	462,371	304,560	192.99	26,508	190.50	0.1816
2016-05-12	2016-03-31	13F	AMPHENOL CORP	CL A	032095101	157,811	2,136	1.37	9,125	12.22	0.0678
2016-02-11	2015-12-31	13F	AMPHENOL CORP	CL A	032095101	155,675	-438	-0.28	8,131	2.20	0.0617
2015-11-12	2015-09-30	13F	AMPHENOL CORP	CL A	032095101	156,113	-4,005	-2.50	7,956	-14.29	0.0659
2015-08-06	2015-06-30	13F	AMPHENOL CORP	CL A	032095101	160,118	-5,350	-3.23	9,282	-4.81	0.0657
2015-05-14	2015-03-31	13F	AMPHENOL CORP	CL A	032095101	165,468	165,468	0.00	9,751		0.0668
2015-02-05	2014-12-31	13F/A-1	AMPHENOL CORP	CL A	032095101	0	-65,480	-100.00	0	-100.00
2014-11-13	2014-09-30	13F	AMPHENOL CORP	CL A	032095101	65,480	-220	-0.33	6,539	3.30	0.0518
2014-08-13	2014-06-30	13F	AMPHENOL CORP	CL A	032095101	65,700	-700	-1.05	6,330	4.01	0.0484
2014-05-14	2014-03-31	13F	AMPHENOL CORP	CL A	032095101	66,400	3,300	5.23	6,086	8.16	0.0493
2014-02-13	2013-12-31	13F	AMPHENOL CORP	CL A	032095101	63,100	2,144	3.52	5,627	19.29	0.0470
2013-11-13	2013-09-30	13F	AMPHENOL CORP	CL A	032095101	60,956	12,233	25.11	4,717	24.23	0.0414
2013-08-01	2013-06-30	13F	AMPHENOL CORP	CL A	032095101	48,723	48,723		3,797		0.0384

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.