SEI INVESTMENTS CO

Position in PLAB — Photronics Inc

CIK 350894 OAKS, PA

Position in PLAB

as of Mar 31, 2026 · filed May 13, 2026 Compact

Position Value

$5,140,474

+$3,220,314 QoQ

Shares Held

127,208

+112.0% QoQ

Ownership

0.216%

of shares outstanding

% of Portfolio

0.01%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

24 quarters on record

Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Technology · as of Mar 31, 2026

SEI INVESTMENTS CO holds $1,309,518,878 across 26 Semiconductor Equipment & Materials names. PLAB ranks #17 (0.4% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ASML	Asml Holding NV	287,225	$379,375,396
2	LRCX	Lam Research Corp	1,114,239	$238,068,304
3	AMAT	Applied Materials Inc /De	654,891	$223,835,194
4	FORM	Formfactor Inc	1,682,322	$163,168,410
5	TER	Teradyne, Inc	171,309	$50,786,265
6	Q	Qnity Electronics, Inc.	405,958	$46,839,433
7	ENTG	Entegris Inc	295,914	$34,692,957
8	NVMI	Nova Ltd.	61,324	$26,631,785

24 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$5,140,474	127,208	+112.0%	Shares	Defined	2026-05-13
2025-12-31	$1,920,160	60,005	-6.0%	Shares	Sole	2026-02-13
2025-09-30	$1,465,310	63,848	+14.3%	Shares	Sole	2025-11-13
2025-06-30	$1,051,993	55,868	-6.3%	Shares	Sole	2025-08-14
2025-03-31	$1,238,353	59,651	+22.8%	Shares	Sole	2025-05-14
2024-12-31	$1,144,591	48,582	+15.2%	Shares	Sole	2025-02-11
2024-09-30	$1,044,326	42,178	+18.1%	Shares	Sole	2024-11-12
2024-06-30	$881,285	35,723	-17.2%	Shares	Sole	2024-08-13
2024-03-31	$1,221,129	43,119	-6.7%	Shares	Sole	2024-05-07
2023-12-31	$1,449,261	46,199	+10.4%	Shares	Sole	2024-02-14
2023-09-30	$845,929	41,857	+31.1%	Shares	Sole	2023-11-14
2023-06-30	$823,190	31,919	-16.1%	Shares	Sole	2023-08-11
2023-03-31	$631,084	38,063	+6.4%	Shares	Sole	2023-05-12
2022-12-31	$601,807	35,758	-77.4%	Shares	Sole	2023-02-10
2022-09-30	$2,314,681	158,323	-25.2%	Shares	Defined	2022-11-14
2022-06-30	$4,123,212	211,664	+13.0%	Shares	Defined	2022-08-15
2022-03-31	$3,178,292	187,289	+14.7%	Shares	Defined	2022-05-13
2021-12-31	$3,077,996	163,289	+63.9%	Shares	Defined	2022-02-14
2021-09-30	$1,358,106	99,641	-4.7%	Shares	Defined	2021-11-12
2021-06-30	$1,380,893	104,534	+127.7%	Shares	Defined	2021-08-06
2021-03-31	$590,274	45,900	-5.2%	Shares	Sole	2021-05-12
2020-12-31	$540,188	48,404	+28.7%	Shares	Sole	2021-02-08
2020-09-30	$374,634	37,614	+243.2%	Shares	Defined	2020-12-04
2020-03-31	$112,439	10,959	—	Shares	Sole	2020-05-14
No filing history on record for this holder in this stock.