MARSHALL WACE, LLP

Position in GLDD — Great Lakes Dredge & Dock CORP

CIK 1318757 LONDON, X0

Position in GLDD

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$885,445

-$155,459 QoQ

Shares Held

52,085

-43.5% QoQ

Ownership

0.078%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

#74

of 181 holders

Holding Since

Mar 2020

10 quarters on record

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

Industrials · as of Mar 31, 2026

MARSHALL WACE, LLP holds $174,761,199 across 29 Engineering & Construction names. GLDD ranks #25 (0.5% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	APG	APi Group Corp	1,025,934	$41,570,845
2	TTEK	Tetra Tech Inc	719,618	$21,674,893
3	MYRG	Myr Group Inc.	69,325	$19,571,832
4	PWR	Quanta Services, Inc.	30,822	$16,921,894
5	STN	Stantec Inc	128,013	$11,060,323
6	TPC	Tutor Perini Corp	90,329	$6,972,494
7	ROAD	Construction Partners, Inc.	62,624	$6,958,778
8	ACM	Aecom	57,940	$4,914,470

10 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$885,445	52,085	-43.5%	Shares	Other	2026-05-15
2024-12-31	$1,040,904	92,197	-64.3%	Shares	Other	2025-02-13
2024-09-30	$2,718,182	258,137	+24.3%	Shares	Other	2024-11-14
2024-06-30	$1,822,956	207,626	+110.9%	Shares	Other	2024-08-14
2023-12-31	$756,203	98,464	-40.8%	Shares	Other	2024-02-14
2023-09-30	$1,324,582	166,196	+281.7%	Shares	Other	2023-11-14
2023-06-30	$355,294	43,541	-77.4%	Shares	Other	2023-08-14
2023-03-31	$1,048,234	193,045	+650.1%	Shares	Other	2023-05-15
2022-12-31	$153,135	25,737	-71.7%	Shares	Other	2023-02-14
2020-03-31	$756,130	91,100	—	Shares	Sole	2020-05-15
No filing history on record for this holder in this stock.