Public Sector Pension Investment Board

Pension

Position in UCTT — Ultra Clean Holdings, Inc.

CIK 1396318 MONTREAL, A8

Back to UCTT Full portfolio

Position in UCTT

as of Jun 30, 2026 · filed Aug 13, 2026 Compact

Position Value

$30,265,583

+$13,019,898 QoQ

Shares Held

212,256

-23.5% QoQ

Ownership

0.469%

of shares outstanding

% of Portfolio

0.08%

of 13F equity value

Holder Rank

#45

of 437 holders

Holding Since

Mar 2020

26 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Common Shares in UCTT Over Time

Shares Held

Position Value (USD)

Position in Semiconductor Equipment & Materials

Technology · as of Jun 30, 2026

Public Sector Pension Investment Board holds $859,715,864 across 15 Semiconductor Equipment & Materials names. UCTT ranks #5 (3.5% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	KLAC	Kla Corp	1,338,234	$403,758,580
2	AMAT	Applied Materials Inc /De	163,970	$118,550,310
3	LRCX	Lam Research Corp	225,457	$97,697,281
4	FORM	Formfactor Inc	267,868	$42,840,129
5	UCTT	Ultra Clean Holdings, Inc. This page	212,256	$30,265,583
6	KLIC	Kulicke & Soffa Industries Inc	207,423	$27,744,900
7	ACMR	ACM Research, Inc.	196,012	$24,871,962
8	ICHR	Ichor Holdings, Ltd.	194,248	$21,810,165

All Filings in UCTT

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26 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$30,265,583	212,256	-23.5%	Shares	Sole	2026-08-13
2026-03-31	$17,245,685	277,351	+76.5%	Shares	Sole	2026-05-13
2025-12-31	$3,981,293	157,177	-11.1%	Shares	Sole	2026-02-13
2025-09-30	$4,819,707	176,870	+14.9%	Shares	Sole	2025-11-06
2025-06-30	$3,473,410	153,895	+7.7%	Shares	Sole	2025-08-12
2025-03-31	$3,058,375	142,848	+27.3%	Shares	Sole	2025-05-12
2024-12-31	$4,035,028	112,240	+17.4%	Shares	Sole	2025-02-14
2024-09-30	$3,816,429	95,578	-3.2%	Shares	Sole	2024-11-14
2024-06-30	$4,840,122	98,778	+7.5%	Shares	Sole	2024-08-14
2024-03-31	$4,221,472	91,891	-1.2%	Shares	Sole	2024-05-14
2023-12-31	$3,176,078	93,031	+68.4%	Shares	Sole	2024-02-14
2023-09-30	$1,639,148	55,246	-30.4%	Shares	Sole	2023-11-22
2023-06-30	$3,051,377	79,339	-0.8%	Shares	Sole	2023-08-14
2023-03-31	$2,653,396	80,018	-3.3%	Shares	Sole	2023-05-12
2022-12-31	$2,743,891	82,772	-0.9%	Shares	Sole	2023-02-14
2022-09-30	$2,149,790	83,487	0.0%	Shares	Sole	2023-01-10
2022-06-30	$2,485,407	83,487	-0.4%	Shares	Sole	2022-08-12
2022-03-31	$3,552,409	83,803	-8.4%	Shares	Sole	2022-05-13
2021-12-31	$5,245,744	91,453	+1.3%	Shares	Sole	2022-02-14
2021-09-30	$3,847,759	90,323	+0.9%	Shares	Sole	2021-11-12
2021-06-30	$4,808,101	89,503	+7.2%	Shares	Sole	2021-08-13
2021-03-31	$4,846,514	83,503	-6.8%	Shares	Sole	2021-05-14
2020-12-31	$2,790,510	89,583	+0.5%	Shares	Sole	2021-02-12
2020-09-30	$1,913,008	89,143	0.0%	Shares	Sole	2020-11-13
2020-06-30	$2,017,306	89,143	0.0%	Shares	Sole	2020-08-14
2020-03-31	$1,230,173	89,143	—	Shares	Sole	2020-05-14
No filing history on record for this holder in this stock.