13F Insight
DOSSIER · 13F Holders · Q1 2026Industrials · Heavy Construction Other Than Bldg Const - ContractorsCheap mega-capRe-rated
GLDD

GREAT LAKES DREDGE & DOCK CO

188 institutions still hold GREAT LAKES DREDGE & DOCK CO as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 390607109·Heavy Construction Other Than Bldg Const - Contractors·188 13F holders·last filed Mar 31, 2026
Market cap
—
▲ 9.6%
vs prior quarter
13F value held
$677M
79.0% inst. owned
of float
Holders
188
-65 QoQ
filers reporting
Activity
+29 / −47
+997 added · −917 reduced
this quarter
Concentration
14.87%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q1 2026

188 institutions reported GLDD in Q1 2026. BlackRock, Inc. leads at 14.9% of the visible book. -65 net institutions QoQ — distribution reading.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$101M5.9M0.00%Q1 202602
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$58M3.4M0.01%Q1 202603
AMERICAN CENTURY COMPANIES INC
CIK 0000748054
$51M3.0M0.03%Q1 202604
JENNISON ASSOCIATES LLC
CIK 0000053417
$50M3.8M0.03%Q4 202505
Harvey Partners, LLC
CIK 0001406484
$49M3.7M4.31%Q4 202506
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$49M2.9M0.00%Q1 202607
FIL Ltd
CIK 0000318989
$45M2.7M0.04%Q1 202608
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
$34M2.0M0.03%Q1 202609
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$29M1.7M0.00%Q1 202610
BALYASNY ASSET MANAGEMENT L.P.
CIK 0001218710
$28M1.6M0.04%Q1 202611
STATE STREET CORP
CIK 0000093751
$27M1.6M0.00%Q1 202612
Qube Research & Technologies Ltd
CIK 0001729829
$24M1.4M0.03%Q1 202613
ODDO BHF ASSET MANAGEMENT SAS
CIK 0001686970
$20M1.2M0.78%Q1 202614
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
$19M1.1M0.01%Q1 202615
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 0001164508
$18M1.1M0.01%Q1 202616
Minerva Advisors LLC
CIK 0001541536
$18M1.0M11.30%Q1 202617
Beryl Capital Management LLC
CIK 0001719307
$16M913K14.14%Q1 202618
Sand Grove Capital Management LLP
CIK 0001665077
$15M893K3.42%Q1 202619
OMERS ADMINISTRATION Corp
CIK 0001053321
$15M864K0.09%Q1 202620
GOLDMAN SACHS GROUP INC
CIK 0000886982
$15M859K0.00%Q1 2026
Page 1 of 10
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