BLAIR WILLIAM & CO/IL

Position in APH — Amphenol Corp /De/

CIK 902367 CHICAGO, IL

Position in APH

as of Mar 31, 2026 · filed May 8, 2026 Compact

Position Value

$318,442,305

-$40,204,524 QoQ

Shares Held

2,520,319

-5.0% QoQ

Ownership

0.205%

of shares outstanding

% of Portfolio

1.10%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 85.99752650358943.ToString("F0")% Shared 0.ToString("F0")% None 14.002473496410573.ToString("F0")%

Technology · as of Mar 31, 2026

BLAIR WILLIAM & CO/IL holds $380,107,175 across 13 Electronic Components names. APH ranks #1 (83.8% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	APH	Amphenol Corp /De/ This page	2,520,319	$318,442,305
2	GLW	Corning Inc /Ny	291,140	$39,586,305
3	TEL	TE Connectivity plc	48,572	$10,152,519
4	LFUS	Littelfuse Inc /De	8,601	$2,918,749
5	JBL	Jabil Inc	8,601	$2,284,683
6	RAL	Ralliant Corp	40,473	$1,683,272
7	OSIS	Osi Systems Inc	5,493	$1,458,446
8	FLEX	Flex Ltd.	17,265	$1,130,166

25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$318,442,305	2,520,319	-5.0%	Shares	Sole	2026-05-08
2025-12-31	$358,646,829	2,653,891	-3.5%	Shares	Sole	2026-02-17
2025-09-30	$340,499,857	2,751,514	-7.4%	Shares	Sole	2025-11-12
2025-06-30	$293,430,490	2,971,448	-1.8%	Shares	Sole	2025-07-24
2025-03-31	$198,563,886	3,027,350	-1.4%	Shares	Sole	2025-05-09
2024-12-31	$213,224,973	3,070,194	-0.7%	Shares	Sole	2025-02-12
2024-09-30	$201,519,680	3,092,690	-1.3%	Shares	Sole	2024-11-12
2024-06-30	$211,035,447	3,132,484	+103.9%	Shares	Sole	2024-08-12
2024-03-31	$88,610,370	1,536,374	+0.3%	Shares	Sole	2024-05-09
2023-12-31	$75,939,775	1,532,125	-0.8%	Shares	Sole	2024-02-12
2023-09-30	$64,872,616	1,544,770	+0.0%	Shares	Sole	2023-11-09
2023-06-30	$65,598,644	1,544,406	+0.7%	Shares	Sole	2023-08-11
2023-03-31	$62,671,027	1,533,799	+0.2%	Shares	Sole	2023-05-12
2022-12-31	$58,301,387	1,531,426	+1.0%	Shares	Sole	2023-02-10
2022-09-30	$50,782,196	1,516,792	-0.5%	Shares	Sole	2022-11-09
2022-06-30	$49,059,716	1,524,067	-0.5%	Shares	Sole	2022-08-10
2022-03-31	$57,712,712	1,531,857	-0.4%	Shares	Sole	2022-05-13
2021-12-31	$67,268,109	1,538,260	+0.9%	Shares	Sole	2022-02-14
2021-09-30	$55,845,893	1,525,219	-0.9%	Shares	Sole	2021-11-12
2021-06-30	$52,647,583	1,539,178	-1.6%	Shares	Sole	2021-08-12
2021-03-31	$51,579,337	1,563,721	+95.4%	Shares	Sole	2021-05-13
2020-12-31	$26,166,553	800,384	+3.4%	Shares	Sole	2021-02-09
2020-09-30	$20,958,744	774,314	-2.6%	Shares	Sole	2020-11-06
2020-06-30	$19,048,441	795,259	+0.4%	Shares	Sole	2020-08-12
2020-03-31	$14,432,317	792,114	—	Shares	Sole	2020-05-11
No filing history on record for this holder in this stock.