Vault-13

GREAT LAKES DREDGE & DOCK CO GLDD

COM · Common Stock · CUSIP 390607109

171 institutional holders +12 vs Q1 2024
54,302,39354.3m shares reported held*
$476.4mreported value*
28 new 53 added 62 reduced 19 sold out net sold ≈ $1.7m (-201.3k shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Implied quarter-end price ≈ $8.77. Options: 6 managers hold calls ($1.7m notional), 4 hold puts ($205.7k).

Trends to Q2 2024

Institutional holders

Managers reporting a position, each quarter

0100200Q3 22: 137Q4 22: 143Q1 23: 141Q2 23: 134Q3 23: 147Q4 23: 143Q1 24: 159Q2 24: 171171Q3 22Q1 23Q3 23Q1 24Q2 24
Numbers
QuarterHolders
Q3 2022137
Q4 2022143
Q1 2023141
Q2 2023134
Q3 2023147
Q4 2023143
Q1 2024159
Q2 2024171

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
1000100Q4 22: 84 bought or addedQ4 22: 63 cut or sold outQ4 22Q1 23: 89 bought or addedQ1 23: 56 cut or sold outQ2 23: 64 bought or addedQ2 23: 66 cut or sold outQ2 23Q3 23: 75 bought or addedQ3 23: 52 cut or sold outQ4 23: 73 bought or addedQ4 23: 55 cut or sold outQ4 23Q1 24: 63 bought or addedQ1 24: 77 cut or sold outQ2 24: 81 bought or addedQ2 24: 81 cut or sold outQ2 24
Numbers
QuarterBought or addedCut or sold out
Q4 20228463
Q1 20238956
Q2 20236466
Q3 20237552
Q4 20237355
Q1 20246377
Q2 20248181

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$2m$4m$6m$8mQ3 23 calls: $251.0kQ3 23 puts: $6.1mQ3 23P/C 24.48Q4 23 calls: $1.4mQ4 23 puts: $32.0kQ4 23P/C 0.02Q1 24 calls: $1.7mQ1 24 puts: $167.2kQ1 24P/C 0.10Q2 24 calls: $1.7mQ2 24 puts: $205.7kQ2 24P/C 0.12
Numbers
QuarterCallsPutsP/C
Q3 2023$251.0k$6.1m24.48
Q4 2023$1.4m$32.0k0.02
Q1 2024$1.7m$167.2k0.10
Q2 2024$1.7m$205.7k0.12

Biggest buyers

GOLDMAN SACHS GROUP INC Added +313,999+314.0k
BlackRock Inc. Added +285,331+285.3k
ALGERT GLOBAL LLC New +249,653+249.7k
MARSHALL WACE, LLP New +207,626+207.6k
TUDOR INVESTMENT CORP ET AL New +195,171+195.2k
Rockefeller Capital Management L.P. New +192,500+192.5k
AQR CAPITAL MANAGEMENT LLC Added +164,780+164.8k
VANGUARD GROUP INC Added +158,153+158.2k
CenterBook Partners LP Added +135,871+135.9k
AMERICAN CENTURY COMPANIES INC Added +112,160+112.2k

Biggest sellers

ALLIANCEBERNSTEIN L.P. Reduced -545,301-545.3k
MORGAN STANLEY Reduced -456,412-456.4k
BRIGHTLINE CAPITAL MANAGEMENT, LLC Sold out -440,000-440.0k
Oppenheimer & Close, LLC Reduced -239,955-240.0k
FIRST MANHATTAN CO. LLC. Sold out -200,000-200.0k
WELLINGTON MANAGEMENT GROUP LLP Reduced -156,218-156.2k
RENAISSANCE TECHNOLOGIES LLC Reduced -137,823-137.8k
SUSQUEHANNA INTERNATIONAL GROUP, LLP Reduced -136,140-136.1k
KENNEDY CAPITAL MANAGEMENT LLC Reduced -130,057-130.1k
GSA CAPITAL PARTNERS LLP Reduced -129,653-129.7k

Biggest calls

SUSQUEHANNA INTERNATIONAL GROUP, LLP Added $786.7k89.6k shares
SIMPLEX TRADING, LLC Reduced $430.0k49.0k shares
WOLVERINE TRADING, LLC Added $279.2k31.8k shares
CITADEL ADVISORS LLC Added $176.5k20.1k shares
GROUP ONE TRADING LLC Reduced $3.5k400 shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. Unchanged $00 shares

Biggest puts

SUSQUEHANNA INTERNATIONAL GROUP, LLP Reduced $122.0k13.9k shares
CITADEL ADVISORS LLC Added $81.7k9.3k shares
SIMPLEX TRADING, LLC Added $2.0k300 shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. Unchanged $00 shares

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
BlackRock, Inc. 13G · institution -1.8 pts · filed 2026-04-28 8.2% -1.8 pts 5.5m 2026-04-28
VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-30 5.0% new 3.4m 2026-04-30

Fell to 5% or below in the last year: DIMENSIONAL FUND ADVISORS LP (0.0%, 2026-07-14), Harvey Partners, LLC (0.9%, 2026-05-15), PRUDENTIAL FINANCIAL INC (1.8%, 2026-05-08), JENNISON ASSOCIATES LLC (1.5%, 2026-05-06), VANGUARD GROUP INC (0.0%, 2026-03-27; now reported by VANGUARD CAPITAL MANAGEMENT LLC)

Holders, Q2 2024

#ManagerLocationShares Value% of their portfolioChangeShares change
1 BlackRock Inc. 0.00% of their portfolio New York, NY 6,912,4866.9m $60.7m $60.7m 0.00% Added +285.3k +285,331
2 DIMENSIONAL FUND ADVISORS LP 0.01% of their portfolio AUSTIN, TX 4,437,7724.4m $39.0m $39.0m 0.01% Reduced -11.0k -11,019
3 JENNISON ASSOCIATES LLC 0.02% of their portfolio NEW YORK, NY 4,254,3514.3m $37.4m $37.4m 0.02% Reduced -105.4k -105,374
4 ALLIANCEBERNSTEIN L.P. 0.01% of their portfolio NASHVILLE, TN 3,978,4364.0m $34.9m $34.9m 0.01% Reduced -545.3k -545,301
5 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 3,571,8263.6m $31.4m $31.4m 0.00% Added +158.2k +158,153
6 Harvey Partners, LLC 3.61% of their portfolio Tarrytown, NY 3,322,0003.3m $29.2m $29.2m 3.61% Reduced -97.0k -97,000
7 WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC 0.06% of their portfolio CHICAGO, IL 2,444,3612.4m $21.5m $21.5m 0.06% Reduced -713 -713
8 TCW GROUP INC 0.16% of their portfolio LOS ANGELES, CA 1,996,1382.0m $17.5m $17.5m 0.16% Added +38.2k +38,200
9 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 1,539,7311.5m $13.5m $13.5m 0.00% Added +65.4k +65,366
10 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 1,527,5061.5m $13.4m $13.4m 0.00% Reduced -1.5k -1,459
11 Minerva Advisors LLC 7.73% of their portfolio BALA CYNWYD, PA 1,322,3371.3m $11.6m $11.6m 7.73% Added +10.2k +10,194
12 PRIVATE MANAGEMENT GROUP INC 0.42% of their portfolio IRVINE, CA 1,253,1651.3m $11.0m $11.0m 0.42% Added +35.1k +35,077
13 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 953,735953.7k $8.4m $8.4m 0.00% Reduced -110.3k -110,331
14 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 896,261896.3k $7.9m $7.9m 0.00% Reduced -456.4k -456,412
15 D. E. Shaw & Co., Inc. 0.01% of their portfolio New York, NY 824,091824.1k $7.2m $7.2m 0.01% Reduced -6.5k -6,476
16 KENNEDY CAPITAL MANAGEMENT LLC 0.13% of their portfolio ST LOUIS, MO 669,140669.1k $5.9m $5.9m 0.13% Reduced -130.1k -130,057
17 CenterBook Partners LP 0.36% of their portfolio GREENWICH, CT 651,975652.0k $5.7m $5.7m 0.36% Added +135.9k +135,871
18 LONDON CO OF VIRGINIA 0.03% of their portfolio RICHMOND, VA 642,744642.7k $5.6m $5.6m 0.03% Unchanged
19 WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio Boston, MA 606,408606.4k $5.3m $5.3m 0.00% Reduced -156.2k -156,218
20 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 583,499583.5k $5.1m $5.1m 0.00% Reduced -19.1k -19,086
21 CASTLEKEEP INVESTMENT ADVISORS LLC 3.82% of their portfolio WESTPORT, CT 563,425563.4k $4.9m $4.9m 3.82% Reduced -9.7k -9,733
22 Prescott Group Capital Management, L.L.C. 0.75% of their portfolio Tulsa, OK 546,870546.9k $4.8m $4.8m 0.75% Unchanged
23 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 497,184497.2k $4.4m $4.4m 0.00% Added +314.0k +313,999
24 Price Jennifer C. 4.60% of their portfolio NEW YORK, NY 450,000450.0k $4.0m $4.0m 4.60% Reduced -50.0k -50,000
25 AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio KANSAS CITY, MO 420,055420.1k $3.7m $3.7m 0.00% Added +112.2k +112,160
26 ESSEX INVESTMENT MANAGEMENT CO LLC 0.57% of their portfolio BOSTON, MA 346,602346.6k $3.0m $3.0m 0.57% Added +44.1k +44,056
27 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 325,601325.6k $2.9m $2.9m 0.00% Reduced -137.8k -137,823
28 Acuitas Investments, LLC 1.45% of their portfolio Seattle, WA 308,664308.7k $2.7m $2.7m 1.45% Unchanged
29 Connor, Clark & Lunn Investment Management Ltd. 0.01% of their portfolio VANCOUVER, A1 275,899275.9k $2.4m $2.4m 0.01% Added +102.3k +102,347
30 WITTENBERG INVESTMENT MANAGEMENT, INC. 0.81% of their portfolio CARLISLE, MA 270,024270.0k $2.4m $2.4m 0.81% Added +69.7k +69,700
31 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 264,489264.5k $2.3m $2.3m 0.00% Added +39.8k +39,811
32 Nuveen Asset Management, LLC 0.00% of their portfolio CHICAGO, IL 256,159256.2k $2.2m $2.2m 0.00% Reduced -94.8k -94,786
33 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 254,686254.7k $2.2m $2.2m 0.00% Added +20.8k +20,781
34 ALGERT GLOBAL LLC 0.07% of their portfolio SAN FRANCISCO, CA 249,653249.7k $2.2m $2.2m 0.07% New
35 NORGES BANK 0.00% of their portfolio OSLO, Q8 245,300245.3k $2.2m $2.2m 0.00% Not comparable
36 Sanctuary Advisors, LLC 0.01% of their portfolio INDIANAPOLIS, IN 234,307234.3k $1.7m $1.7m 0.01% First filing
37 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 227,627227.6k $2.0m $2.0m 0.00% Reduced -767 -767
38 AMERIPRISE FINANCIAL INC 0.00% of their portfolio MINNEAPOLIS, MN 223,828223.8k $2.0m $2.0m 0.00% Reduced -13.2k -13,190
39 TWO SIGMA ADVISERS, LP 0.00% of their portfolio NEW YORK, NY 218,567218.6k $1.9m $1.9m 0.00% Reduced -11.1k -11,100
40 AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio Greenwich, CT 208,218208.2k $1.8m $1.8m 0.00% Added +164.8k +164,780
41 MARSHALL WACE, LLP 0.00% of their portfolio LONDON, X0 207,626207.6k $1.8m $1.8m 0.00% New
42 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio NEW YORK, NY 200,127200.1k $1.8m $1.8m 0.00% Added +37.7k +37,708
43 TUDOR INVESTMENT CORP ET AL 0.02% of their portfolio STAMFORD, CT 195,171195.2k $1.7m $1.7m 0.02% New
44 Rockefeller Capital Management L.P. 0.00% of their portfolio NEW YORK, NY 192,500192.5k $1.7m $1.7m 0.00% New
45 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 179,021179.0k $1.6m $1.6m 0.00% Added +72.5k +72,463
46 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 170,954171.0k $1.5m $1.5m 0.00% Added +37.5k +37,504
47 ClariVest Asset Management LLC 0.15% of their portfolio SAN DIEGO, CA 166,104166.1k $1.5m $1.5m 0.15% Added +67.9k +67,938
48 Cullen Capital Management, LLC 0.02% of their portfolio New York, NY 157,897157.9k $1.4m $1.4m 0.02% Reduced -21.8k -21,796
49 Oppenheimer & Close, LLC 1.19% of their portfolio NEW YORK, NY 154,645154.6k $1.4m $1.4m 1.19% Reduced -240.0k -239,955
50 Squarepoint Ops LLC 0.00% of their portfolio NEW YORK, NY 144,510144.5k $1.3m $1.3m 0.00% Added +19.8k +19,767
51 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 143,560143.6k $1.3m $1.3m 0.00% Added +89.6k +89,566
52 Knights of Columbus Asset Advisors LLC 0.08% of their portfolio NEW HAVEN, CT 136,540136.5k $1.2m $1.2m 0.08% Reduced -120.9k -120,892
53 Swiss National Bank 0.00% of their portfolio ZURICH, V8 131,000131.0k $1.2m $1.2m 0.00% Unchanged
54 IQ EQ FUND MANAGEMENT (IRELAND) Ltd 0.13% of their portfolio DUBLIN 2, L2 130,403130.4k $1.1m $1.1m 0.13% Added +8.7k +8,654
55 VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio San Antonio, TX 122,000122.0k $1.1m $1.1m 0.00% Reduced -6.0k -6,000
56 BANK OF MONTREAL /CAN/ 0.00% of their portfolio TORONTO, A6 116,867116.9k $1.0m $1.0m 0.00% Added +100.2k +100,183
57 Legato Capital Management LLC 0.14% of their portfolio San Francisco, CA 116,829116.8k $1.0m $1.0m 0.14% Unchanged
58 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 112,080112.1k $984.1k $984.1k 0.00% Reduced -52.2k -52,236
59 RHUMBLINE ADVISERS 0.00% of their portfolio BOSTON, MA 108,953109.0k $956.6k $956.6k 0.00% Added +247 +247
60 UBS Group AG 0.00% of their portfolio ZURICH, V8 103,158103.2k $905.7k $905.7k 0.00% Added +19.3k +19,321
61 WYNNEFIELD CAPITAL INC 0.39% of their portfolio NEW YORK, NY 100,000100.0k $878.0k $878.0k 0.39% Reduced -69.3k -69,266
62 Trexquant Investment LP 0.01% of their portfolio STAMFORD, CT 81,37181.4k $714.4k $714.4k 0.01% Added +57.6k +57,638
63 Jefferies Financial Group Inc. 0.01% of their portfolio NEW YORK, NY 77,46377.5k $680.1k $680.1k 0.01% New
64 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 75,29375.3k $661.1k $661.1k 0.00% Added +17.4k +17,412
65 SHERBROOKE PARK ADVISERS LLC 0.11% of their portfolio WHITE PLAINS, NY 72,80272.8k $639.2k $639.2k 0.11% New
66 CREDIT AGRICOLE S A 0.00% of their portfolio Montrouge Cedex, I0 68,40068.4k $600.6k $600.6k 0.00% New
67 Legal & General Group Plc 0.00% of their portfolio London, X0 67,80567.8k $595.3k $595.3k 0.00% Unchanged
68 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio WEST SACRAMENTO, CA 65,04065.0k $571.1k $571.1k 0.00% Reduced -1.4k -1,446
69 GSA CAPITAL PARTNERS LLP 0.04% of their portfolio LONDON, X0 64,76764.8k $569.0k $569.0k 0.04% Reduced -129.7k -129,653
70 ExodusPoint Capital Management, LP 0.01% of their portfolio NEW YORK, NY 64,66864.7k $568.0k $568.0k 0.01% New
71 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 63,85663.9k $560.7k $560.7k 0.00% Reduced -14.9k -14,879
72 Dynamic Technology Lab Private Ltd 0.06% of their portfolio SINGAPORE, U0 63,83463.8k $560.0k $560.0k 0.06% New
73 CORNERCAP INVESTMENT COUNSEL INC 0.09% of their portfolio Atlanta, GA 62,86762.9k $552.0k $552.0k 0.09% Unchanged
74 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 58,76958.8k $516.0k $516.0k 0.00% Added +13.9k +13,861
75 Balyasny Asset Management L.P. 0.00% of their portfolio Chicago, IL 55,21055.2k $484.7k $484.7k 0.00% New
76 STATE OF WISCONSIN INVESTMENT BOARD 0.00% of their portfolio MADISON, WI 53,58553.6k $470.5k $470.5k 0.00% Reduced -16.2k -16,193
77 PEAK6 Investments LLC 0.02% of their portfolio CHICAGO, IL 51,26051.3k $450.1k $450.1k 0.02% Reduced -14.8k -14,849
78 Jump Financial, LLC 0.01% of their portfolio Chicago, IL 50,80050.8k $446.0k $446.0k 0.01% Added +14.1k +14,090
79 Cubist Systematic Strategies, LLC 0.01% of their portfolio STAMFORD, CT 47,21547.2k $414.5k $414.5k 0.01% Reduced -27.3k -27,316
80 STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.00% of their portfolio TALLAHASSEE, FL 43,02943.0k $377.8k $377.8k 0.00% Added +40 +40
81 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 39,77939.8k $349.3k $349.3k 0.00% Added +4.6k +4,585
82 Creative Planning 0.00% of their portfolio OVERLAND PARK, KS 38,68838.7k $339.7k $339.7k 0.00% Added +2.9k +2,919
83 Qube Research & Technologies Ltd 0.00% of their portfolio LONDON, X0 38,62838.6k $339.2k $339.2k 0.00% New
84 MetLife Investment Management, LLC 0.00% of their portfolio Whippany, NJ 37,66437.7k $330.7k $330.7k 0.00% Added +4.0k +4,025
85 Canton Hathaway, LLC 0.09% of their portfolio PROVIDENCE, RI 37,30037.3k $327.0k $327.0k 0.09% Reduced -6.7k -6,700
86 Corebridge Financial, Inc. 0.00% of their portfolio HOUSTON, TX 35,48235.5k $311.5k $311.5k 0.00% First filing
87 NATIXIS ADVISORS, LLC 0.00% of their portfolio Boston, MA 33,49633.5k $294.0k $294.0k 0.00% Reduced -802 -802
88 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio CAUSEWAY BAY, K3 32,54032.5k $285.7k $285.7k 0.00% First filing
89 EntryPoint Capital, LLC 0.13% of their portfolio NEW YORK, NY 31,24031.2k $274.3k $274.3k 0.13% Reduced -7.0k -7,021
90 ELCO Management Co., LLC 0.16% of their portfolio New York, NY 30,33630.3k $266.4k $266.4k 0.16% Added +18.8k +18,804
91 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 30,07630.1k $264.1k $264.1k 0.00% Reduced -136.1k -136,140
92 DEUTSCHE BANK AG\ 0.00% of their portfolio FRANKFURT AM MAIN, 2M 29,31229.3k $257.4k $257.4k 0.00% Reduced -2.9k -2,888
93 JANUS HENDERSON GROUP PLC 0.00% of their portfolio LONDON, X0 29,18429.2k $256.1k $256.1k 0.00% Reduced -334 -334
94 KEYBANK NATIONAL ASSOCIATION/OH 0.00% of their portfolio BROOKLYN, OH 29,15529.2k $256.0k $256.0k 0.00% Reduced -724 -724
95 Versor Investments LP 0.05% of their portfolio New York, NY 28,80028.8k $252.9k $252.9k 0.05% Added +11.7k +11,700
96 XTX Topco Ltd 0.02% of their portfolio LONDON, X0 27,94327.9k $245.3k $245.3k 0.02% New
97 Teza Capital Management LLC 0.03% of their portfolio CHICAGO, IL 27,69127.7k $243.1k $243.1k 0.03% Added +7.8k +7,811
98 MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio Toronto, A6 26,07826.1k $229.0k $229.0k 0.00% Reduced -229 -229
99 HSBC HOLDINGS PLC 0.00% of their portfolio LONDON, X0 25,92525.9k $227.1k $227.1k 0.00% New
100 Graham Capital Management, L.P. 0.01% of their portfolio ROWAYTON, CT 24,75924.8k $217.4k $217.4k 0.01% New