GREAT LAKES DREDGE & DOCK CO

Ticker: GLDD CUSIP: 390607109 Class: Common Stock

Note: Option positions (PUT/CALL) are excluded.

InstitutionSharesValue ($000)
BlackRock, Inc.6,897,215$90,491
DIMENSIONAL FUND ADVISORS LP4,300,112$56,418
VANGUARD GROUP INC3,987,334$52,314
JENNISON ASSOCIATES LLC3,806,504$49,941
Harvey Partners, LLC3,703,215$48,586
AMERICAN CENTURY COMPANIES INC2,584,604$33,910
TCW GROUP INC1,874,234$24,590
GEODE CAPITAL MANAGEMENT, LLC1,630,411$21,395
MILLENNIUM MANAGEMENT LLC1,597,481$20,959
STATE STREET CORP1,589,380$20,853
Minerva Advisors LLC1,389,807$18,234
MORGAN STANLEY1,019,618$13,377
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP796,209$10,446
JPMORGAN CHASE & CO668,280$8,768
NORTHERN TRUST CORP636,980$8,357
GOLDMAN SACHS GROUP INC634,720$8,328
Qube Research & Technologies Ltd630,098$8,267
BNP PARIBAS ARBITRAGE, SA589,172$7,730
LONDON CO OF VIRGINIA584,424$7,668
PRESCOTT GROUP CAPITAL MANAGEMENT, L.L.C.576,870$7,569
TWO SIGMA INVESTMENTS, LP570,682$7,487
CHARLES SCHWAB INVESTMENT MANAGEMENT INC554,348$7,273
BRIDGEWAY CAPITAL MANAGEMENT, LLC508,266$6,668
Connor, Clark & Lunn Investment Management Ltd.453,539$5,950
Allspring Global Investments Holdings, LLC430,762$5,712
CASTLEKEEP INVESTMENT ADVISORS LLC428,358$5,620
D. E. Shaw & Co., Inc.416,103$5,459
TWO SIGMA ADVISERS, LP415,767$5,455
CenterBook Partners LP410,971$5,392
Squarepoint Ops LLC382,573$5,019
Simcoe Capital LLC377,684$4,955
Point72 Asset Management, L.P.344,243$4,516
ALGERT GLOBAL LLC343,302$5
BANK OF AMERICA CORP /DE/332,237$4,359
Sanctuary Advisors, LLC328,554$4,311
ESSEX INVESTMENT MANAGEMENT CO LLC301,986$3,962
PRIVATE MANAGEMENT GROUP INC282,493$3,706
Brandywine Global Investment Management, LLC271,720$3,565
AQR CAPITAL MANAGEMENT LLC261,071$3,425
Bank of New York Mellon Corp260,249$3,414
RENAISSANCE TECHNOLOGIES LLC258,791$3,395
LAZARD ASSET MANAGEMENT LLC226,275$2,969
SEGALL BRYANT & HAMILL, LLC221,799$2,910
NWAM LLC217,450$3,238
Y-Intercept (Hong Kong) Ltd213,516$2,801
BNP Paribas Investment Partners S.A.212,306$3
Walleye Capital LLC206,215$2,706
JACOBS LEVY EQUITY MANAGEMENT, INC205,321$2,694
RAYMOND JAMES FINANCIAL INC187,527$2,460
WITTENBERG INVESTMENT MANAGEMENT, INC.183,100$2,402
BFSG, LLC171,696$2,253
Trexquant Investment LP171,645$2,252
ExodusPoint Capital Management, LP165,931$2,177
Jump Financial, LLC154,915$2,032
CITADEL ADVISORS LLC153,952$2,020
ZACKS INVESTMENT MANAGEMENT152,586$2,002
Nuveen, LLC151,568$1,989
JANE STREET GROUP, LLC150,174$1,970
Jackson Creek Investment Advisors LLC143,321$2
BARCLAYS PLC139,300$1,828
Russell Investments Group, Ltd.138,756$1,820
Swiss National Bank134,200$1,761
LPL Financial LLC134,022$1,758
HRT FINANCIAL LP132,582$2
TUDOR INVESTMENT CORP ET AL132,476$1,738
DEUTSCHE BANK AG\126,848$1,664
UBS ASSET MANAGEMENT AMERICAS INC122,030$1,601
MACKENZIE FINANCIAL CORP120,869$1,592
Invesco Ltd.119,528$1,568
Seven Six Capital Management, LLC111,113$1,458
PANAGORA ASSET MANAGEMENT INC110,705$1,452
SG Americas Securities, LLC105,846$1
Thrivent Financial for Lutherans101,100$1
Legato Capital Management LLC96,684$1,268
VICTORY CAPITAL MANAGEMENT INC90,000$1,181
RHUMBLINE ADVISERS89,395$1,173
HB Wealth Management, LLC88,614$1,163
CREDIT AGRICOLE S A88,400$1,160
Verition Fund Management LLC86,525$1,135
WELLS FARGO & COMPANY/MN84,767$1,112
PRINCIPAL FINANCIAL GROUP INC79,149$1,038
Campbell & CO Investment Adviser LLC76,705$1,006
Cullen Capital Management, LLC74,678$980
ACADIAN ASSET MANAGEMENT LLC74,393$1
MARTINGALE ASSET MANAGEMENT L P72,802$955
STATE OF WISCONSIN INVESTMENT BOARD71,469$938
Susquehanna Portfolio Strategies, LLC70,586$926
Universal- Beteiligungs- und Servicegesellschaft mbH67,796$889
Legal & General Group Plc67,455$885
ALLIANCEBERNSTEIN L.P.63,140$828
UBS Group AG62,633$822
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM61,983$813
Numerai GP LLC60,925$799
AlphaQuest LLC58,257$764
SEI INVESTMENTS CO54,243$712
HSBC HOLDINGS PLC53,694$705
Creative Planning51,868$681
Magnetar Financial LLC50,021$656
AMERIPRISE FINANCIAL INC48,588$637
CITIGROUP INC47,600$625
121 other institutions1,627,659$20,191
Total (221 institutions)55,969,068$719,020