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Flock — Smart-money disclosures, made readable

Great Lakes Dredge & Dock Co

US · US

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Holders

BlackRock
13F filer
$60.7M
6,912,486 sh
as-of 30 Jun 2024Stale
Two Sigma Investments
13F filer
$33.8M
1,989,521 sh
as-of 31 Mar 2026Quarterly
Renaissance Technologies
13F filer
$6.5M
381,700 sh
as-of 31 Mar 2026Quarterly

Ownership

Ownership data not yet available for this security.

Disclosure timeline

DISCLOSEDQuarterly
Renaissance Technologies
Great Lakes Dredge & Dock Co · US
381,700 sh · $6.5M
Filed 31 Mar 2026SEC 13Fview source
DISCLOSEDQuarterly
Two Sigma Investments
Great Lakes Dredge & Dock Co · US
1,989,521 sh · $33.8M
Filed 31 Mar 2026SEC 13Fview source
DISCLOSEDStale
BlackRock
Great Lakes Dredge & Dock Co · US
6,912,486 sh · $60.7M
Filed 30 Jun 2024SEC 13Fview source

Announcements

No announcements on record for this security.

US · US

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Latest filing31 Mar 2026Stale

3 disclosed holders · 3 disclosures · 0 announcements

Ownership

Ownership data not yet available for this security.

Announcements

No announcements on record for this security.