GREAT LAKES DREDGE & DOCK CO (GLDD) Institutional Selling Activity

Several institutional investors tracked by InsiderSet reduced exposure to GREAT LAKES DREDGE & DOCK CO (GLDD) during the quarter ended March 31, 2026 based on sequential SEC Form 13F filings.

The largest disclosed institutional seller of GLDD during the latest reporting period reduced its reported position by approximately $1.55M based on quarter-end filing values.

Institutional selling activity may reflect profit-taking, sector rotation, portfolio rebalancing, or changing conviction levels among major investment firms. InsiderSet tracks quarter-over-quarter holding reductions, full exits, estimated value changes, and historical selling activity using publicly disclosed SEC filing data.

The investors covered on this page collectively reduced approximately $5.19M in reported GLDD exposure during the latest filing period, although many institutional holders continue to maintain significant long-term ownership positions in GREAT LAKES DREDGE & DOCK CO.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q3 2025Renaissance Technologies LLCSell-129,332255,056$3,058,121
Q1 2025Renaissance Technologies LLCSell-162,201116,400$1,012,680
Q4 2024Sequoia Financial AdvisorsSell-47102,442$1,156,571
Q3 2024Renaissance Technologies LLCSell-94,500231,101$2,433,494
Q2 2024Renaissance Technologies LLCSell-137,823325,601$2,858,777
Q1 2024Renaissance Technologies LLCSell-200,677463,424$4,055
Q3 2023Renaissance Technologies LLCSell-119,600610,201$4,863
Q2 2023Renaissance Technologies LLCSell-355,700729,801$5,955
Q1 2023Renaissance Technologies LLCSell-174,0341,085,501$5,894
Q4 2022Renaissance Technologies LLCSell-21,2661,259,535$7,494
Q3 2022Renaissance Technologies LLCSell-191,7001,280,801$9,708
Q2 2022Renaissance Technologies LLCSell-18,7001,472,501$19,304
Q1 2022Renaissance Technologies LLCSell-48,5001,491,201$20,922
Q4 2021Renaissance Technologies LLCSell-84,5001,539,701$24,204
Q3 2021Renaissance Technologies LLCSell-155,7001,624,201$24,509
Q2 2021Renaissance Technologies LLCSell-369,7651,779,901$26,004
Q1 2021Renaissance Technologies LLCSell-174,7352,149,666$31,342
Q4 2020Renaissance Technologies LLCSell-146,4002,324,401$30,612
Q3 2020Renaissance Technologies LLCSell-33,5002,470,801$23,497
Q2 2020Renaissance Technologies LLCSell-7,7002,504,301$23,190
Q1 2018Renaissance Technologies LLCSell-35,10042,100$194
Q4 2017Renaissance Technologies LLCSell-2,06377,200$417
Q2 2016Renaissance Technologies LLCSell-180,20027,700$121

Frequently asked questions about GLDD activity

  • Which institutional owners are buying GLDD?

    Institutional owners buying GLDD include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in GLDD activity?

    "Buy" means an investor increased their reported position in GLDD compared to the prior reporting period. This reflects growing exposure to GREAT LAKES DREDGE & DOCK CO (GLDD) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in GLDD increasing?

    Institutional interest in GLDD can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.

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