MARSHALL WACE, LLP

Position in NPKI — NPK International Inc.

CIK 1318757 LONDON, X0

Position in NPKI

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

Position Value

$5,341,527

+$4,557,373 QoQ

Shares Held

335,734

+520.4% QoQ

Ownership

0.395%

of shares outstanding

% of Portfolio

0.01%

of 13F equity value

Holder Rank

#50

of 255 holders

Holding Since

Mar 2020

12 quarters on record

Voting authority Sole 0% Shared 100% None 0%

Industrials · as of Jun 30, 2026

MARSHALL WACE, LLP holds $406,663,442 across 24 Building Products & Equipment names. NPKI ranks #10 (1.3% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	TT	Trane Technologies plc	207,380	$101,856,760
2	JCI	Johnson Controls International plc	663,134	$96,890,508
3	WMS	Advanced Drainage Systems, Inc.	314,509	$49,365,331
4	OC	Owens Corning	249,080	$39,593,756
5	TREX	Trex Co Inc	520,095	$26,025,552
6	CARR	CARRIER GLOBAL Corp	351,833	$25,806,948
7	SPXC	SPX Technologies, Inc.	97,640	$23,938,397
8	BLDR	Builders FirstSource, Inc.	139,552	$12,487,112

12 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$5,341,527	335,734	+520.4%	Shares	Other	2026-08-13
2026-03-31	$784,154	54,117	+349.4%	Shares	Other	2026-05-15
2024-09-30	$83,457	12,043	-83.9%	Shares	Other	2024-11-14
2024-06-30	$621,263	74,761	+24.0%	Shares	Other	2024-08-14
2024-03-31	$435,329	60,295	-89.3%	Shares	Other	2024-05-15
2023-09-30	$3,909,664	565,798	+139.0%	Shares	Other	2023-11-14
2023-06-30	$1,238,307	236,770	+116.6%	Shares	Other	2023-08-14
2022-06-30	$337,718	109,294	-82.1%	Shares	Other	2022-08-15
2020-12-31	$1,173,120	611,000	-13.8%	Shares	Sole	2021-02-16
2020-09-30	$744,568	709,113	0.0%	Shares	Sole	2020-11-16
2020-06-30	$1,581,321	709,113	-15.8%	Shares	Sole	2020-08-13
2020-03-31	$758,365	842,628	—	Shares	Sole	2020-05-15
No filing history on record for this holder in this stock.