RHUMBLINE ADVISERS

Position in FORM — Formfactor Inc

CIK 1115418 BOSTON, MA

Position in FORM

as of Jun 30, 2026 · filed Aug 12, 2026 Compact

Position Value

$24,947,960

+$5,066,950 QoQ

Shares Held

155,993

-23.9% QoQ

Ownership

0.200%

of shares outstanding

% of Portfolio

0.02%

of 13F equity value

Holder Rank

#75

of 511 holders

Holding Since

Mar 2020

26 quarters on record

Voting authority Sole 66% Shared 0% None 34%

Technology · as of Jun 30, 2026

RHUMBLINE ADVISERS holds $3,288,249,694 across 28 Semiconductor Equipment & Materials names. FORM ranks #9 (0.8% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	AMAT	Applied Materials Inc /De	1,419,788	$1,026,506,724
2	LRCX	Lam Research Corp	2,271,281	$984,214,195
3	KLAC	Kla Corp	2,451,630	$739,681,287
4	TER	Teradyne, Inc	301,374	$145,816,796
5	ENTG	Entegris Inc	439,154	$78,986,238
6	Q	Qnity Electronics, Inc.	375,842	$61,378,757
7	ONTO	Onto Innovation Inc.	133,651	$50,580,220
8	AMKR	Amkor Technology, Inc.	315,669	$27,220,137

26 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$24,947,960	155,993	-23.9%	Shares	Sole	2026-08-12
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.