GREAT LAKES DREDGE & DOCK CO (GLDD) Stock Institutional Trading Activity


GREAT LAKES DREDGE & DOCK CO (GLDD) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q4 2025), investors with some of the largest reported share count changes include Renaissance Technologies LLC and Sequoia Financial Advisors. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.

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Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q4 2025Renaissance Technologies LLCBuy3,735258,791$3,395,338
Q3 2025Renaissance Technologies LLCSell-129,332255,056$3,058,121
Q2 2025Renaissance Technologies LLCBuy267,988384,388$4,685,690
Q1 2025Sequoia Financial AdvisorsBuy300102,742$893,856
Q1 2025Renaissance Technologies LLCSell-162,201116,400$1,012,680
Q4 2024Sequoia Financial AdvisorsSell-47102,442$1,156,571
Q4 2024Renaissance Technologies LLCBuy47,500278,601$3,145,405
Q3 2024Sequoia Financial AdvisorsBuy102,489102,489$1,079,210
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
Q4 2023Renaissance Technologies LLCBuy53,900664,101$5,100
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 2020Renaissance Technologies LLCBuy302,9002,512,001$20,850
Q4 2019Renaissance Technologies LLCBuy183,8002,209,101$25,029
Q3 2019Renaissance Technologies LLCBuy723,1012,025,301$21,164
Q2 2019Renaissance Technologies LLCBuy629,7001,302,200$14,376

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.