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Disclosery

GLDD GREAT LAKES DREDGE & DOCK CO

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Common Stock (common)

171 managers (182 13F filers) reported a position in GLDD shares at 2026-03-31, 54,783,902 shares in all. 50 filers opened a position and 90 filers sold out during the quarter.

Managers
171
13F filers
182
New
50
Added
42
Reduced
64
Sold out
90
Shares held by filers
54,783,902

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, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, 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.5,917,589$101M<0.01%-979,62613F-HRTimelineGroup
VANGUARD GROUP INCgroup of 6 filers holding3,844,838$65.4MnewTimeline
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP3,386,372$57.6M0.01%-913,74013F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC3,006,419$51.1M0.03%+421,81513F-HRTimelineGroup
GLAZER CAPITAL, LLCin group GLAZER CAPITAL, LLC2,949,613$50.1M1.07%new13F-HRTimelineGroup
FIL Ltdin group FIL Ltd2,671,231$45.4M0.04%new13F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP1,989,521$33.8M0.03%+1,418,83913F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC1,678,166$28.5M<0.01%+47,75513F-HRTimelineGroup
Balyasny Asset Management L.P.in group Balyasny Asset Management1,626,990$27.7M0.05%new13F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP1,577,722$26.8M<0.01%-11,65813F-HRTimelineGroup
Qube Research & Technologies Ltd1,383,585$23.5M0.03%+753,48713F-HRTimeline
WATER ISLAND CAPITAL LLC1,263,580$21.5M2.86%new13F-HRTimeline
ODDO BHF ASSET MANAGEMENT SAS1,166,388$19.8M0.78%new13F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC1,131,127$19.2M0.01%-466,35413F-HRTimelineGroup
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …1,054,360$17.9M0.01%+258,15113F-HRTimelineGroup
Minerva Advisors LLC1,029,703$17.5M11.3%-360,10413F-HRTimeline
JENNISON ASSOCIATES LLC1,029,264$17.5M0.01%-2,777,24013F-HRTimeline
Beryl Capital Management LLC912,537$15.5M14.28%new13F-HRTimeline
Sand Grove Capital Management LLP893,190$15.2M3.55%new13F-HRTimeline
AQR CAPITAL MANAGEMENT LLCgroup of 2 filers holding865,047$14.7M+603,976Timeline
OMERS ADMINISTRATION Corp864,000$14.7M0.09%new13F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC858,621$14.6M<0.01%+223,90113F-HRTimelineGroup
GAMCO Investors (Gabelli)group of 3 filers holding779,238$13.2MnewTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP669,478$11.4M<0.01%+32,49813F-HRTimelineGroup
TIG Advisors, LLCin group TIG Advisors, LLC642,867$10.9M0.52%new13F-HRTimelineGroup
Harvey Partners, LLC610,000$10.4M0.84%-3,093,21513F-HRTimeline
LONDON CO OF VIRGINIA584,424$9.94M0.06%013F-HRTimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC584,315$9.93M0.02%+201,74213F-HRTimelineGroup
Prescott Group Capital Management, L.L.…576,870$9.81M0.98%013F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co558,012$9.49M<0.01%+3,66413F-HRTimelineGroup
Cinctive Capital Management LP500,000$8.5M0.56%new13F-HRTimeline
First Trust Capital Management L.P.in group FIRST TRUST ADVISORS LP434,061$7.38M0.39%new13F-HRTimelineGroup
Schonfeld Strategic Advisors LLC433,667$7.37M0.06%+396,61213F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC381,700$6.49M0.01%+122,90913F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY329,163$5.6M<0.01%-690,45513F-HRTimelineGroup
Sanctuary Advisors, LLC305,240$5.19M0.03%-23,31413F-HRTimeline
HRT FINANCIAL LP276,423$4.7M0.01%+143,84113F-HRTimeline
LAZARD ASSET MANAGEMENT LLCin group LAZARD ASSET MANAGEMENT LLC269,389$4.58M0.01%+43,11413F-HRTimelineGroup
FRANKLIN RESOURCES INCin group Franklin Resources267,116$4.54M<0.01%new13F-HRTimelineGroup
PRELUDE CAPITAL MANAGEMENT, LLC255,852$4.35M0.33%new13F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp253,954$4.32M<0.01%-6,29513F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding242,110$4.12M+57,447Timeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO225,360$3.82M<0.01%-442,92013F-HR/ATimelineGroup
VOLORIDGE INVESTMENT MANAGEMENT, LLC208,184$3.54M0.01%new13F-HRTimeline
Polar Asset Management Partners Inc.200,000$3.4M0.08%new13F-HRTimeline
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC190,030$3.23M<0.01%new13F-HRTimelineGroup
WOLVERINE ASSET MANAGEMENT LLCin group WOLVERINE ASSET MANAGEMENT LLC175,708$2.99M0.05%new13F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/173,986$2.96M<0.01%-158,25113F-HRTimelineGroup
Nuveen, LLCin group TIAA150,195$2.55M<0.01%-1,37313F-HRTimelineGroup
Y-Intercept (Hong Kong) Ltd142,229$2.42M0.05%-71,28713F-HRTimeline
Swiss National Bank134,200$2.28M<0.01%013F-HRTimeline
Groupe la Francaisein group Groupe la Francaise128,598$2.19M0.03%new13F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPgroup of 3 filers holding127,666$2.17M+39,028Timeline
OXFORD ASSET MANAGEMENT LLP121,883$2.07M0.84%new13F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…101,821$1.73M<0.01%-36,93513F-HRTimelineGroup
Versor Investments LP101,631$1.73M4.23%new13F-HRTimeline
CREDIT AGRICOLE S Ain group CREDIT AGRICOLE S A100,000$1.7M0.01%+11,60013F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.92,353$1.57M<0.01%-323,75013F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…91,090$1.55M<0.01%+29,10713F-HRTimeline
RHUMBLINE ADVISERS87,855$1.49M<0.01%-1,54013F-HRTimeline
HB Wealth Management, LLC87,752$1.49M0.01%-86213F-HRTimeline
PRINCIPAL FINANCIAL GROUP INCin group PRINCIPAL FINANCIAL GROUP INC84,439$1.44M<0.01%+5,29013F-HRTimelineGroup
VICTORY CAPITAL MANAGEMENT INC77,000$1.31M<0.01%-13,00013F-HRTimeline
BOOTHBAY FUND MANAGEMENT, LLC74,860$1.27M0.03%+60,82613F-HRTimeline
CREDIT INDUSTRIEL ET COMMERCIAL69,245$1.18M0.19%new13F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\63,138$1.07M<0.01%-63,71013F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc62,273$1.06M<0.01%-5,18213F-HRTimelineGroup
Creative Planningin group Creative Planning53,784$914K<0.01%+1,91613F-HRTimelineGroup
MARSHALL WACE, LLPin group MARSHALL WACE, LLP52,085$885K<0.01%new13F-HRTimelineGroup
PRICE T ROWE ASSOCIATES INC /MD/50,000$850K<0.01%+9,91813F-HRTimeline
STATE OF WISCONSIN INVESTMENT BOARD49,960$849K<0.01%-21,50913F-HRTimeline
Invesco Ltd.in group Invesco Ltd.47,937$815K<0.01%-71,59113F-HRTimelineGroup
ALLIANCEBERNSTEIN L.P.61,340$805K<0.01%-1,80013F-HRTimeline
CSS LLC/IL46,900$797K0.04%new13F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…46,099$784K<0.01%+14,89413F-HRTimeline
VARCOV Co.43,681$743K0.28%+27,93713F-HRTimeline
CANADA PENSION PLAN INVESTMENT BOARD41,900$712K<0.01%-1,20013F-HRTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC37,516$638K<0.01%-116,43613F-HRTimelineGroup
INTECH INVESTMENT MANAGEMENT LLC37,277$634K0.01%+6,30113F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN35,282$600K<0.01%-49,48513F-HR/ATimelineGroup
Canton Hathaway, LLC35,000$595K0.12%-11,70013F-HRTimeline
Gotham Asset Management, LLC34,598$588K<0.01%new13F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…34,468$586K<0.01%-64313F-HRTimelineGroup
State of Wyoming34,385$585K0.07%-9,53013F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC32,318$549K<0.01%-106,98213F-HRTimelineGroup
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…31,198$530K<0.01%+27213F-HRTimelineGroup
ProShare Advisors LLC31,149$530K<0.01%+18,98113F-HRTimeline
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.30,557$519K<0.01%-313,68613F-HRTimelineGroup
ALPS ADVISORS INCin group ALPS ADVISORS INC29,271$498K<0.01%-8,80413F-HRTimelineGroup
Cullen Capital Management, LLC28,963$492K0.01%-45,71513F-HRTimeline
Brooklyn Investment Group28,861$491K0.02%new13F-HRTimeline
Systematic Alpha Investments, LLC28,600$486K0.02%013F-HRTimeline
Universal- Beteiligungs- und Serviceges…in group Universal- Beteiligungs- und …28,280$481K<0.01%-39,51613F-HRTimelineGroup
SG Americas Securities, LLC27,615$469K<0.01%-78,23113F-HRTimeline
Engineers Gate Manager LP27,270$464K0.01%+5,95213F-HRTimeline
T3 Companies, LLCin group T3 Companies, LLC25,060$426K0.58%new13F-HRTimelineGroup
Quantinno Capital Management LP24,659$419K<0.01%+2,71613F-HRTimeline
GSA CAPITAL PARTNERS LLP23,603$401K0.02%+6,92313F-HRTimeline
ExodusPoint Capital Management, LP23,382$397K<0.01%-142,54913F-HRTimeline
PenderFund Capital Management Ltd.23,200$394K0.06%new13F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND21,453$365K<0.01%+6,70013F-HRTimeline
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC20,480$348K<0.01%-33,21413F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.20,269$345K<0.01%-1,37413F-HRTimelineGroup
QUADRANT CAPITAL GROUP LLC20,084$341K0.01%-34313F-HR/ATimeline
FMR LLCin group FMR LLC19,665$334K<0.01%+1,99613F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC19,347$329K<0.01%-28,25313F-HRTimelineGroup
BAILARD, INC.18,677$318K0.01%+2,40013F-HRTimeline
Yakira Capital Management, Inc.18,222$310K0.09%new13F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …18,124$308K<0.01%-2,25513F-HRTimelineGroup
Prospera Financial Services Inc15,500$264K<0.01%013F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS15,318$260K<0.01%-573,85413F-HRTimelineGroup
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC14,975$255K<0.01%-33,61313F-HR/ATimelineGroup
KLP KAPITALFORVALTNING AS14,500$246K<0.01%013F-HRTimeline
Murchinson Ltd.14,200$241K0.1%new13F-HRTimeline
EQUITEC PROPRIETARY MARKETS, LLC14,100$240K0.55%new13F-HRTimeline
L2 Asset Management, LLC13,841$235K0.02%new13F-HRTimeline
CreativeOne Wealth, LLCin group CreativeOne Wealth, LLC13,283$226K0.01%new13F-HRTimelineGroup
TWO SIGMA SECURITIES, LLC12,903$219K0.03%new13F-HRTimeline
SIGNATUREFD, LLC12,866$219K<0.01%013F-HRTimeline
Swiss Life Asset Management Ltdin group Swiss Life Asset Management L…12,829$218K<0.01%new13F-HRTimelineGroup
KEYBANK NATIONAL ASSOCIATION/OHin group KEYBANK NATIONAL ASSOCIATION/…12,437$211K<0.01%-17,73913F-HRTimelineGroup
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC11,867$202K<0.01%-67213F-HRTimelineGroup
MARTINGALE ASSET MANAGEMENT L P11,502$196K<0.01%-61,30013F-HRTimeline
Jain Global LLC11,338$193K<0.01%-5,34513F-HRTimeline
GUGGENHEIM CAPITAL LLCin group GUGGENHEIM CAPITAL LLC10,182$173K<0.01%new13F-HRTimelineGroup
Caitong International Asset Management …9,649$164K0.03%+8,86313F-HRTimeline
GROUP ONE TRADING LLC9,386$160K0.01%new13F-HRTimeline
Employees Retirement System of Texas8,172$139K<0.01%013F-HRTimeline
Aster Capital Management (DIFC) Ltd12,089$105K0.03%new13F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…5,562$94.6K<0.01%013F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…5,334$90.7K<0.01%+1713F-HRTimelineGroup
GAMMA Investing LLC3,996$67.9K<0.01%+65313F-HRTimeline
State of Alaska, Department of Revenue3,908$66K<0.01%013F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\3,398$57.8K<0.01%+1513F-HRTimelineGroup
Bogart Wealth, LLC3,000$51K<0.01%new13F-HRTimeline
MassMutual Private Wealth & Trust, FSB2,307$39.2K<0.01%-33013F-HRTimeline
Parallel Advisors, LLC2,304$39.2K<0.01%+64713F-HR/ATimeline
Sterling Capital Management LLC2,206$37.5K<0.01%-30,43113F-HRTimeline
Farther Finance Advisors, LLC2,084$35.4K<0.01%-2713F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF O…1,276$21.7K<0.01%-3,84213F-HRTimeline
Destiny Wealth Partners, LLC1,120$19K<0.01%new13F-HRTimeline
Meteora Capital, LLC1,079$18.3K<0.01%new13F-HRTimeline
NISA INVESTMENT ADVISORS, LLC1,032$17.5K<0.01%013F-HRTimeline
Smartleaf Asset Management LLC925$15.7K<0.01%+16913F-HRTimeline
SUMMIT SECURITIES GROUP LLC746$12.7K0.01%new13F-HRTimeline
Versant Capital Management, Inc743$12.6K<0.01%013F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA687$12K<0.01%-9,82113F-HRTimelineGroup
Covestor Ltd533$10K0.01%+48613F-HRTimeline
Optiver Holding B.V.in group Optiver Holding B.V.554$9.42K<0.01%+23613F-HR/ATimelineGroup
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…443$7.53K<0.01%+2813F-HRTimelineGroup
Valued Wealth Advisors LLC290$4.93K<0.01%new13F-HRTimeline
BFSG, LLC275$4.67K<0.01%-171,42113F-HRTimeline
Allworth Financial LP247$4.2K<0.01%-13313F-HRTimeline
TD Waterhouse Canada Inc.200$3.38K<0.01%013F-HRTimeline
Fortitude Family Office, LLC129$2.19K<0.01%-17913F-HRTimeline
ASSETMARK, INCin group ASSETMARK, INC123$2.09K<0.01%013F-HRTimelineGroup
CWM, LLCin group CWM, LLC106$1.8K<0.01%-7,01013F-HRTimelineGroup
True Wealth Design, LLC106$1.8K<0.01%-24313F-HRTimeline
LOS ANGELES CAPITAL MANAGEMENT LLC105$1.78K<0.01%013F-HRTimeline
Cullen/Frost Bankers, Inc.in group Cullen/Frost Bankers, Inc.95$1.61K<0.01%-1,06913F-HRTimelineGroup
HANTZ FINANCIAL SERVICES, INC.37$1K<0.01%-2813F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Parkside Financial Bank & Trust55$936<0.01%013F-HRTimeline
IFP Advisors, Inc52$884<0.01%+613F-HRTimeline
Larson Financial Group LLC39$663<0.01%013F-HRTimeline
MAI Capital Management34$578<0.01%-2313F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…31$527<0.01%-24513F-HR/ATimelineGroup
FIFTH THIRD BANCORPin group FIFTH THIRD BANK, NATIONAL AS…21$357<0.01%new13F-HRTimelineGroup
TopTier Wealth Management, LLC15$255<0.01%new13F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP8$136<0.01%013F-HRTimelineGroup
GHP Investment Advisors, Inc.2$34<0.01%new13F-HRTimeline
HUNTINGTON NATIONAL BANKin group HUNTINGTON NATIONAL BANK1$17<0.01%013F-HRTimelineGroup