RHUMBLINE ADVISERS

Position in FORM — Formfactor Inc

CIK 1115418 BOSTON, MA

Position in FORM

as of Mar 31, 2026 · filed May 12, 2026 Compact

Position Value

$19,881,010

+$8,482,256 QoQ

Shares Held

204,980

+0.3% QoQ

Ownership

0.263%

of shares outstanding

% of Portfolio

0.02%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 43.571567957849545.ToString("F0")% Shared 0.ToString("F0")% None 56.428432042150455.ToString("F0")%

Technology · as of Mar 31, 2026

RHUMBLINE ADVISERS holds $1,319,450,273 across 25 Semiconductor Equipment & Materials names. FORM ranks #8 (1.5% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	LRCX	Lam Research Corp	2,297,150	$490,809,069
2	AMAT	Applied Materials Inc /De	1,389,985	$475,082,973
3	TER	Teradyne, Inc	269,646	$79,939,253
4	ENTG	Entegris Inc	430,837	$50,511,329
5	Q	Qnity Electronics, Inc.	382,673	$44,152,810
6	KLAC	Kla Corp	250,998	$36,957,196
7	ONTO	Onto Innovation Inc.	134,070	$27,493,734
8	FORM	Formfactor Inc This page	204,980	$19,881,010

25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$19,881,010	204,980	+0.3%	Shares	Sole	2026-05-12
2025-12-31	$11,398,754	204,352	-6.9%	Shares	Sole	2026-02-13
2025-09-30	$7,994,736	219,515	-1.5%	Shares	Sole	2025-11-06
2025-06-30	$7,665,068	222,757	+1.2%	Shares	Sole	2025-08-12
2025-03-31	$6,229,231	220,192	+3.8%	Shares	Sole	2025-05-29
2024-12-31	$9,331,124	212,071	+1.5%	Shares	Sole	2025-05-29
2024-09-30	$9,612,022	208,957	-3.2%	Shares	Sole	2024-11-12
2024-06-30	$13,068,608	215,903	-0.5%	Shares	Sole	2024-08-01
2024-03-31	$9,903,170	217,032	-0.4%	Shares	Sole	2024-05-09
2023-12-31	$9,086,189	217,842	-6.2%	Shares	Sole	2024-02-08
2023-09-30	$8,116,352	232,294	-0.2%	Shares	Sole	2023-11-09
2023-06-30	$7,966,689	232,808	-1.0%	Shares	Sole	2023-08-08
2023-03-31	$7,491,757	235,220	+5.6%	Shares	Sole	2023-05-11
2022-12-31	$4,951,865	222,756	+5.3%	Shares	Sole	2023-02-14
2022-09-30	$5,297,523	211,478	+3.1%	Shares	Sole	2022-11-10
2022-06-30	$7,940,773	205,029	+3.7%	Shares	Sole	2022-08-11
2022-03-31	$8,312,567	197,777	+5.1%	Shares	Sole	2022-05-12
2021-12-31	$8,603,589	188,180	+2.7%	Shares	Sole	2022-02-10
2021-09-30	$6,841,394	183,268	-14.1%	Shares	Sole	2021-11-12
2021-06-30	$7,782,423	213,451	-0.9%	Shares	Sole	2021-08-05
2021-03-31	$9,718,859	215,448	+1.4%	Shares	Sole	2021-05-06
2020-12-31	$9,144,116	212,555	+0.3%	Shares	Sole	2021-02-10
2020-09-30	$5,283,539	211,935	-6.5%	Shares	Sole	2020-11-12
2020-06-30	$6,645,562	226,579	-16.7%	Shares	Sole	2020-08-13
2020-03-31	$5,461,787	271,866	—	Shares	Sole	2020-05-06
No filing history on record for this holder in this stock.