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Disclosery

GLDD GREAT LAKES DREDGE & DOCK CO

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Common Stock (common)

219 managers (222 13F filers) reported a position in GLDD shares at 2025-12-31, 55,969,309 shares in all. 27 filers opened a position and 19 filers sold out during the quarter.

Managers
219
13F filers
222
New
27
Added
78
Reduced
82
Sold out
19
Shares held by filers
55,969,309

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q4 2025

Filers in the available 13F reports with a share position at 2025-12-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
BlackRock, Inc.in group BlackRock, Inc.6,897,215$90.5M<0.01%-40,50513F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP4,300,112$56.4M0.01%-23,13913F-HRTimelineGroup
VANGUARD GROUP INCin group VANGUARD GROUP INC3,987,334$52.3M<0.01%+108,03313F-HRTimelineGroup
JENNISON ASSOCIATES LLC3,806,504$49.9M0.03%-467,76413F-HRTimeline
Harvey Partners, LLC3,703,215$48.6M4.36%+2,66413F-HRTimeline
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC2,584,604$33.9M0.02%+172,13713F-HRTimelineGroup
TCW GROUP INCin group TCW GROUP INC1,874,234$24.6M0.18%013F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC1,630,411$21.4M<0.01%-4,08013F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC1,597,481$21M0.02%+451,34613F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP1,589,380$20.9M<0.01%-27,97313F-HRTimelineGroup
Minerva Advisors LLC1,389,807$18.2M12.18%013F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY1,019,618$13.4M<0.01%+222,16613F-HR/ATimelineGroup
TWO SIGMA INVESTMENTS, LPgroup of 2 filers holding986,449$12.9M+281,785Timeline
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …796,209$10.4M0.01%-7,37713F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO668,280$8.77M<0.01%-220,45913F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP636,980$8.36M<0.01%-58,17713F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC634,720$8.33M<0.01%+347,33413F-HR/ATimelineGroup
Qube Research & Technologies Ltd630,098$8.27M0.01%+248,73313F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS589,172$7.73M<0.01%+159,33913F-HRTimelineGroup
LONDON CO OF VIRGINIA584,424$7.67M0.04%013F-HRTimeline
Prescott Group Capital Management, L.L.…576,870$7.57M0.7%013F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co554,348$7.27M<0.01%-7,35713F-HRTimelineGroup
BRIDGEWAY CAPITAL MANAGEMENT, LLC508,266$6.67M0.14%+66,17813F-HRTimeline
Connor, Clark & Lunn Investment Managem…453,539$5.95M0.02%+37,24613F-HRTimeline
Allspring Global Investments Holdings, …in group Allspring Global Investments …430,762$5.71M0.01%-63,27113F-HRTimelineGroup
CASTLEKEEP INVESTMENT ADVISORS LLC428,358$5.62M2.54%-26,17113F-HRTimeline
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.416,103$5.46M<0.01%+27,22213F-HRTimelineGroup
CenterBook Partners LP410,971$5.39M0.26%-107,36013F-HRTimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC382,573$5.02M0.01%+5,53313F-HRTimelineGroup
Simcoe Capital LLC377,684$4.96M4.67%13F-HRTimeline
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.344,243$4.52M0.01%+326,25513F-HRTimelineGroup
ALGERT GLOBAL LLC343,302$4.5M0.07%+57,68313F-HR/ATimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/332,237$4.36M<0.01%+82,12913F-HRTimelineGroup
Sanctuary Advisors, LLC328,554$4.31M0.02%+94,16213F-HRTimeline
ESSEX INVESTMENT MANAGEMENT CO LLC301,986$3.96M0.6%-6,82313F-HRTimeline
PRIVATE MANAGEMENT GROUP INC282,493$3.71M0.11%-222,03413F-HRTimeline
Brandywine Global Investment Management…in group Franklin Resources271,720$3.56M0.02%-10,00013F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC261,071$3.43M<0.01%+64,52713F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp260,249$3.41M<0.01%+9,73713F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC258,791$3.4M0.01%+3,73513F-HRTimeline
NWAM LLC217,450$3.24M0.18%new13F-HRTimeline
LAZARD ASSET MANAGEMENT LLCin group LAZARD ASSET MANAGEMENT LLC226,275$2.97M0.01%+41,42013F-HRTimelineGroup
SEGALL BRYANT & HAMILL, LLC221,799$2.91M0.04%-46713F-HRTimeline
Y-Intercept (Hong Kong) Ltd213,516$2.8M0.06%+111,19813F-HRTimeline
BNP PARIBAS ASSET MANAGEMENT Holding S.…in group BNP PARIBAS ASSET MANAGEMENT …212,306$2.79M<0.01%-5,38713F-HRTimelineGroup
Walleye Capital LLCin group Walleye Capital LLC206,215$2.71M0.02%+137,21513F-HRTimelineGroup
JACOBS LEVY EQUITY MANAGEMENT, INC205,321$2.69M0.01%-16,42213F-HRTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC187,527$2.46M<0.01%-1,04313F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding184,663$2.42M-29,494Timeline
WITTENBERG INVESTMENT MANAGEMENT, INC.183,100$2.4M0.92%-8,70013F-HRTimeline
BFSG, LLC171,696$2.25M0.22%-6,61113F-HRTimeline
Trexquant Investment LP171,645$2.25M0.02%+72,97313F-HRTimeline
ExodusPoint Capital Management, LP165,931$2.18M0.02%+65,27413F-HRTimeline
Jump Financial, LLCin group Jump Financial, LLC154,915$2.03M0.03%+11,98013F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC153,952$2.02M<0.01%-10,13913F-HRTimelineGroup
ZACKS INVESTMENT MANAGEMENT152,586$2M0.02%+35,23413F-HRTimeline
Nuveen, LLCin group TIAA151,568$1.99M<0.01%-60,81813F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC150,174$1.97M<0.01%+56,79613F-HRTimelineGroup
Jackson Creek Investment Advisors LLC143,321$1.88M0.56%-4,18713F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC139,300$1.83M<0.01%+13,36013F-HRTimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…138,756$1.82M<0.01%-2,34113F-HRTimelineGroup
Swiss National Bank134,200$1.76M<0.01%+2,60013F-HRTimeline
LPL Financial LLC134,022$1.76M<0.01%+21,22213F-HRTimeline
HRT FINANCIAL LP132,582$1.74M0.01%-22,85913F-HRTimeline
TUDOR INVESTMENT CORP ET AL132,476$1.74M0.01%-153,64213F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\126,848$1.66M<0.01%+71,18013F-HRTimelineGroup
MACKENZIE FINANCIAL CORP120,869$1.59M<0.01%-18,61313F-HRTimeline
Invesco Ltd.in group Invesco Ltd.119,528$1.57M<0.01%-17,64313F-HRTimelineGroup
Seven Six Capital Management, LLC111,113$1.46M1.47%-67,40013F-HRTimeline
PANAGORA ASSET MANAGEMENT INC110,705$1.45M0.01%+2,46113F-HRTimeline
SG Americas Securities, LLC105,846$1.39M<0.01%+13,41413F-HRTimeline
Thrivent Financial for Lutheransin group Thrivent Financial for Luther…101,100$1.33M<0.01%-8,25613F-HRTimelineGroup
Legato Capital Management LLC96,684$1.27M0.11%+8,46113F-HRTimeline
VICTORY CAPITAL MANAGEMENT INC90,000$1.18M<0.01%-9,55013F-HRTimeline
RHUMBLINE ADVISERS89,395$1.17M<0.01%-15,22513F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPgroup of 2 filers holding88,638$1.16M-86,192Timeline
HB Wealth Management, LLC88,614$1.16M0.01%+38813F-HRTimeline
CREDIT AGRICOLE S Ain group CREDIT AGRICOLE S A88,400$1.16M<0.01%new13F-HRTimelineGroup
Verition Fund Management LLC86,525$1.14M0.01%+57,38313F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN84,767$1.11M<0.01%+23,05013F-HRTimelineGroup
PRINCIPAL FINANCIAL GROUP INCin group PRINCIPAL FINANCIAL GROUP INC79,149$1.04M<0.01%+23,85813F-HRTimelineGroup
Campbell & CO Investment Adviser LLC76,705$1.01M0.05%+57,18213F-HRTimeline
Cullen Capital Management, LLC74,678$980K0.01%013F-HRTimeline
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC74,393$971K<0.01%+55,38213F-HRTimelineGroup
MARTINGALE ASSET MANAGEMENT L P72,802$955K0.02%new13F-HRTimeline
STATE OF WISCONSIN INVESTMENT BOARD71,469$938K<0.01%-10,37513F-HRTimeline
Universal- Beteiligungs- und Serviceges…in group Universal- Beteiligungs- und …67,796$889K<0.01%+9,76813F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc67,455$885K<0.01%-10,51113F-HRTimelineGroup
ALLIANCEBERNSTEIN L.P.63,140$828K<0.01%-15,67013F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…61,983$813K<0.01%-6013F-HRTimeline
Numerai GP LLC60,925$799K0.1%new13F-HRTimeline
AlphaQuest LLC58,257$764K0.04%-26,48313F-HRTimeline
SEI INVESTMENTS COin group SEI INVESTMENTS CO54,243$712K<0.01%new13F-HRTimelineGroup
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC53,694$705K<0.01%-7,08213F-HR/ATimelineGroup
Creative Planningin group Creative Planning51,868$681K<0.01%+31413F-HRTimelineGroup
Magnetar Financial LLCin group Magnetar Financial LLC50,021$656K0.01%+19,58613F-HRTimelineGroup
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC48,588$637K<0.01%+47013F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC47,600$625K<0.01%+28,96013F-HRTimelineGroup
Canton Hathaway, LLC46,700$613K0.12%+3,90013F-HRTimeline
State of Wyoming43,915$576K0.06%+7,76713F-HRTimeline
American Capital Advisory, LLC43,150$566K0.25%-5,44113F-HRTimeline
CANADA PENSION PLAN INVESTMENT BOARD43,100$565K<0.01%new13F-HRTimeline
STATE BOARD OF ADMINISTRATION OF FLORID…43,029$565K<0.01%013F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/40,082$526K<0.01%+5,00613F-HRTimeline
ALPS ADVISORS INCin group ALPS ADVISORS INC38,075$500K<0.01%+32513F-HRTimelineGroup
WINTON GROUP Ltdin group WINTON GROUP Ltd37,834$496K0.02%-7,63213F-HRTimelineGroup
ARISTEIA CAPITAL, L.L.C.37,760$495K0.01%+7,94513F-HRTimeline
Schonfeld Strategic Advisors LLC37,055$486K<0.01%-12,55513F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…35,111$461K<0.01%-45713F-HRTimelineGroup
Sterling Capital Management LLC32,637$428K0.01%+28,04413F-HRTimeline
FOX RUN MANAGEMENT, L.L.C.31,750$417K0.06%-6,59613F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…31,205$409K<0.01%+7,99713F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC30,976$406K<0.01%-3,22613F-HRTimeline
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…30,926$406K<0.01%-36313F-HRTimelineGroup
NEXT CENTURY GROWTH INVESTORS LLC30,520$400K0.03%-416,30113F-HRTimeline
KEYBANK NATIONAL ASSOCIATION/OHin group KEYBANK NATIONAL ASSOCIATION/…30,176$396K<0.01%+113F-HRTimelineGroup
JANUS HENDERSON GROUP PLCin group Janus Henderson29,184$383K<0.01%013F-HRTimelineGroup
Graham Capital Management, L.P.29,054$381K0.01%-4,02313F-HRTimeline
Systematic Alpha Investments, LLC28,600$375K0.01%013F-HRTimeline
THOMPSON DAVIS & CO., INC.26,025$341K0.2%-57513F-HRTimeline
PCM Encore, LLC24,529$322K0.07%13F-HRTimeline
INCEPTIONR LLC24,116$316K0.09%new13F-HRTimeline
Dynamic Technology Lab Private Ltd23,769$312K0.07%-38,83713F-HRTimeline
Quantinno Capital Management LP21,943$288K<0.01%+2,46713F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.21,643$284K<0.01%+20,32213F-HRTimelineGroup
Engineers Gate Manager LP21,318$280K<0.01%new13F-HRTimeline
AE Wealth Management LLC20,917$274K<0.01%+1,74213F-HRTimeline
Integrated Quantitative Investments LLC20,523$269K0.06%new13F-HRTimeline
QUADRANT CAPITAL GROUP LLC20,427$268K0.01%013F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …20,379$267K<0.01%-2,09813F-HRTimelineGroup
NewEdge Advisors, LLC20,287$266K<0.01%+19,86713F-HRTimeline
R Squared Ltd19,819$260K0.12%+2,85413F-HRTimeline
ARS Investment Partners, LLC18,977$249K0.01%-8,50313F-HRTimeline
ARIZONA STATE RETIREMENT SYSTEM18,834$247K<0.01%-1,23213F-HRTimeline
FMR LLCin group FMR LLC17,669$232K<0.01%+3,91113F-HRTimelineGroup
Police & Firemen's Retirement System of…17,568$230K<0.01%-4213F-HRTimeline
GSA CAPITAL PARTNERS LLP16,680$219K0.02%-132,86213F-HRTimeline
Jain Global LLC16,683$219K<0.01%new13F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd16,654$218K0.01%+5,62713F-HRTimelineGroup
BANK OF MONTREAL /CAN/in group BANK OF MONTREAL /CAN/16,588$218K<0.01%-9513F-HRTimelineGroup
BAILARD, INC.16,277$214K<0.01%-6,80013F-HRTimeline
VARCOV Co.15,744$207K0.08%13F-HRTimeline
IEQ CAPITAL, LLC15,511$204K<0.01%new13F-HRTimeline
Prospera Financial Services Inc15,500$203K<0.01%013F-HRTimeline
State of Tennessee, Department of Treas…13,524$203K<0.01%new13F-HRTimeline
TEACHER RETIREMENT SYSTEM OF TEXAS14,883$195K<0.01%-15,30913F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND14,753$194K<0.01%013F-HRTimeline
CAXTON ASSOCIATES LLP14,568$191K<0.01%new13F-HRTimeline
KLP KAPITALFORVALTNING AS14,500$190K<0.01%-2,10013F-HRTimeline
BOOTHBAY FUND MANAGEMENT, LLC14,034$184K<0.01%-40,27913F-HRTimeline
Atria Investments, Inc13,531$178K<0.01%+76513F-HRTimeline
Apollon Wealth Management, LLCin group Apollon Wealth Management, LLC13,335$175K<0.01%new13F-HRTimelineGroup
Fayez Sarofim & Coin group Fayez Sarofim & Co12,966$170K<0.01%-4,54613F-HRTimelineGroup
SIGNATUREFD, LLC12,866$169K<0.01%-4013F-HRTimeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…12,617$166K<0.01%+2,17613F-HRTimelineGroup
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC12,539$165K<0.01%-26713F-HRTimelineGroup
ProShare Advisors LLC12,168$160K<0.01%+78613F-HRTimeline
Mirabaud & Cie SA12,000$157K0.05%new13F-HRTimeline
Passumpsic Savings Bank12,000$157K0.09%13F-HRTimeline
VIRTUS ADVISERS, LLCin group Virtus Investment Advisers, L…11,737$154K0.07%013F-HRTimelineGroup
Mariner, LLCin group Mariner, LLC10,819$142K<0.01%-4213F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA10,508$138K<0.01%+1,70613F-HRTimelineGroup
ENVESTNET ASSET MANAGEMENT INCin group ENVESTNET ASSET MANAGEMENT INC10,508$138K<0.01%-53013F-HRTimelineGroup
Corient Private Wealth LPin group Corient Private Wealth LP10,333$136K<0.01%-14113F-HR/ATimelineGroup
Perigon Wealth Management, LLC10,098$132K<0.01%new13F-HRTimeline
Aquatic Capital Management LLC8,802$115K<0.01%+22613F-HRTimeline
Employees Retirement System of Texas8,172$107K<0.01%-7,37713F-HRTimeline
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.7,168$94K<0.01%+8213F-HRTimelineGroup
CWM, LLCin group CWM, LLC7,116$93K<0.01%+12113F-HRTimelineGroup
CANADA LIFE ASSURANCE Coin group CANADA LIFE ASSURANCE Co6,556$86K<0.01%013F-HRTimelineGroup
Quantbot Technologies LP6,269$82.2K<0.01%-34,65013F-HRTimeline
NEW YORK STATE TEACHERS RETIREMENT SYST…6,081$80K<0.01%new13F-HRTimeline
Pinnacle Wealth Planning Services, Inc.5,911$77.6K0.01%new13F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…5,562$73K<0.01%013F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…5,317$69.8K<0.01%+2,02913F-HRTimelineGroup
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF O…5,118$67.1K<0.01%-9013F-HRTimeline
State of Alaska, Department of Revenue3,908$51K<0.01%013F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\3,383$44.4K<0.01%013F-HRTimelineGroup
GAMMA Investing LLC3,343$43.9K<0.01%+44613F-HRTimeline
MassMutual Private Wealth & Trust, FSB2,637$34.6K<0.01%013F-HRTimeline
Farther Finance Advisors, LLC2,111$27.7K<0.01%+1,47413F-HRTimeline
AMALGAMATED BANK2,091$27K<0.01%-13913F-HRTimeline
Westside Investment Management, Inc.1,940$25.7K<0.01%013F-HRTimeline
Financial Management Professionals, Inc.1,920$25.2K<0.01%new13F-HRTimeline
Parallel Advisors, LLC1,657$21.7K<0.01%013F-HRTimeline
BLUE BELL PRIVATE WEALTH MANAGEMENT, LLC1,597$21K<0.01%+15713F-HRTimeline
HM PAYSON & CO1,325$17.4K<0.01%new13F-HRTimeline
Cullen/Frost Bankers, Inc.in group Cullen/Frost Bankers, Inc.1,164$15.3K<0.01%+17513F-HRTimelineGroup
NISA INVESTMENT ADVISORS, LLC1,032$13.5K<0.01%013F-HRTimeline
Caitong International Asset Management …786$10.3K<0.01%-1,18913F-HR/ATimeline
Smartleaf Asset Management LLC756$9.98K<0.01%-23513F-HRTimeline
Versant Capital Management, Inc743$9.75K<0.01%013F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…415$5.45K<0.01%+713F-HRTimelineGroup
Luminist Capital LLC400$5.25K0.01%new13F-HRTimeline
Allworth Financial LP380$4.99K<0.01%013F-HRTimeline
True Wealth Design, LLC349$4.58K<0.01%+1313F-HRTimeline
Optiver Holding B.V.in group Optiver Holding B.V.318$4.17K<0.01%013F-HRTimelineGroup
Fortitude Family Office, LLC308$4.04K<0.01%013F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…276$3.62K<0.01%-5013F-HRTimelineGroup
Essential Partners LLC241$3.16K<0.01%-713F-HRTimeline