13F Insight
DOSSIER · 13F Holders · Q1 2026Industrials · Heavy Construction Other Than Bldg Const - Contractors
GLDD

GREAT LAKES DREDGE & DOCK CO

31 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·31 13F holders·last filed Mar 31, 2026
Market cap
—
13F value held
$129M
visible holders
Holders
31
filers reporting
Concentration
38.83%
GLAZER CAPITAL, LLC #1
top holder share
AI Holders Summary · Q1 2026

31 institutions reported GLDD in Q1 2026. GLAZER CAPITAL, LLC leads at 38.8% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
GLAZER CAPITAL, LLC
CIK 0001076809
$50M2.9M1.06%Q1 202602
Harvey Partners, LLC
CIK 0001406484
$49M3.7M4.31%Q4 202503
TIG Advisors, LLC
CIK 0001358253
$11M643K0.51%Q1 202604
D. E. Shaw & Co., Inc.
CIK 0001009207
$5M416K0.00%Q4 202505
TWO SIGMA ADVISERS, LP
CIK 0001478735
$5M416K0.01%Q4 202506
HRT FINANCIAL LP
CIK 0001475597
$2M133K0.01%Q4 202507
PRICE T ROWE ASSOCIATES INC /MD/
CIK 0000080255
$850K50K0.00%Q1 202608
ALLIANCEBERNSTEIN L.P.
CIK 0001109448
$805K61K0.00%Q1 202609
Numerai GP LLC
CIK 0001668527
$799K61K0.10%Q4 202510
AlphaQuest LLC
CIK 0001883897
$764K58K0.04%Q4 202511
Point72 Asset Management, L.P.
CIK 0001603466
$519K31K0.00%Q1 202612
Brooklyn Investment Group
CIK 0001795705
$491K29K0.02%Q1 202613
SG Americas Securities, LLC
CIK 0001313360
$469K28K0.00%Q1 202614
JANE STREET GROUP, LLC
CIK 0001595888· Market maker
$468K28K0.00%Q1 202615
Engineers Gate Manager LP
CIK 0001620220
$464K27K0.01%Q1 202616
GSA CAPITAL PARTNERS LLP
CIK 0001362033
$401K24K0.02%Q1 202617
Murchinson Ltd.
CIK 0001838556
$241K14K0.03%Q1 202618
VARCOV Co.
CIK 0002078837
$207K16K0.08%Q4 202519
Jain Global LLC
CIK 0002024579
$193K11K0.00%Q1 202620
Passumpsic Savings Bank
CIK 0002023170
$157K12K0.09%Q4 2025
Page 1 of 2
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Insiders at GREAT LAKES DREDGE & DOCK CO
Bayer Ryan →Gunsten Christopher →Beyko Eleni →Armstrong Dana A →Schiffer Vivienne →Hanson William H →Shipp Earl L →Steger Ronald →