GREAT LAKES DREDGE & DOCK CO (GLDD) Institutional Ownership Changes & 13F Activity
GREAT LAKES DREDGE & DOCK CO (GLDD). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q1 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Harvey Partners, Llc, Fil Ltd, Balyasny Asset Management L.P., Two Sigma Investments, Lp, and Water Island Capital Llc.
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| Algert Global Llc | Sell | -343,302 | -100.0% | 0 | $0.00 | Q1 2026 | Aug 11, 2026 |
| Wells Fargo & Company/Mn | Sell | -49,485 | -58.4% | 35,282 | $599.79K | Q1 2026 | Jul 08, 2026 |
| Oddo Bhf Asset Management Sas | Buy | +1,166,388 | — | 1,166,388 | $19.83M | Q1 2026 | May 18, 2026 |
| Bank Of America Corp | Sell | -158,251 | -47.6% | 173,986 | $2.96M | Q1 2026 | May 18, 2026 |
| California State Teachers Retirement System | Buy | +29,107 | +47.0% | 91,090 | $1.55M | Q1 2026 | May 18, 2026 |
| Harvey Partners, Llc | Sell | -3,093,215 | -83.5% | 610,000 | $10.37M | Q1 2026 | May 15, 2026 |
| Fil Ltd | Buy | +2,671,231 | — | 2,671,231 | $45.41M | Q1 2026 | May 15, 2026 |
| Balyasny Asset Management L.P. | Buy | +1,626,990 | — | 1,626,990 | $27.66M | Q1 2026 | May 15, 2026 |
| Two Sigma Investments, Lp | Buy | +1,418,839 | +248.6% | 1,989,521 | $33.82M | Q1 2026 | May 15, 2026 |
| Water Island Capital Llc | Buy | +1,263,580 | — | 1,263,580 | $21.48M | Q1 2026 | May 15, 2026 |
| Beryl Capital Management Llc | Buy | +912,537 | — | 912,537 | $15.51M | Q1 2026 | May 15, 2026 |
| Sand Grove Capital Management Llp | Buy | +893,190 | — | 893,190 | $15.18M | Q1 2026 | May 15, 2026 |
| Omers Administration Corp | Buy | +864,000 | — | 864,000 | $14.69M | Q1 2026 | May 15, 2026 |
| Qube Research & Technologies Ltd | Buy | +753,487 | +119.6% | 1,383,585 | $23.52M | Q1 2026 | May 15, 2026 |
| Aqr Arbitrage Llc | Buy | +730,615 | — | 730,615 | $12.42M | Q1 2026 | May 15, 2026 |
| Morgan Stanley | Sell | -690,455 | -67.7% | 329,163 | $5.60M | Q1 2026 | May 15, 2026 |
| Tig Advisors, Llc | Buy | +642,867 | — | 642,867 | $10.93M | Q1 2026 | May 15, 2026 |
| Cinctive Capital Management Lp | Buy | +500,000 | — | 500,000 | $8.50M | Q1 2026 | May 15, 2026 |
| Millennium Management Llc | Sell | -466,354 | -29.2% | 1,131,127 | $19.23M | Q1 2026 | May 15, 2026 |
| American Century Companies Inc | Buy | +421,815 | +16.3% | 3,006,419 | $51.11M | Q1 2026 | May 15, 2026 |
| Schonfeld Strategic Advisors Llc | Buy | +396,612 | +1070.3% | 433,667 | $7.37M | Q1 2026 | May 15, 2026 |
| D. E. Shaw & Co., Inc. | Sell | -323,750 | -77.8% | 92,353 | $1.57M | Q1 2026 | May 15, 2026 |
| Point72 Asset Management, L.P. | Sell | -313,686 | -91.1% | 30,557 | $519.47K | Q1 2026 | May 15, 2026 |
| Prelude Capital Management, Llc | Buy | +255,852 | — | 255,852 | $4.35M | Q1 2026 | May 15, 2026 |
| Goldman Sachs Group Inc | Buy | +223,901 | +35.3% | 858,621 | $14.60M | Q1 2026 | May 15, 2026 |
| Voloridge Investment Management, Llc | Buy | +208,184 | — | 208,184 | $3.54M | Q1 2026 | May 15, 2026 |
| Squarepoint Ops Llc | Buy | +201,742 | +52.7% | 584,315 | $9.93M | Q1 2026 | May 15, 2026 |
| Polar Asset Management Partners Inc. | Buy | +200,000 | — | 200,000 | $3.40M | Q1 2026 | May 15, 2026 |
| Aqr Capital Management Llc | Sell | -126,639 | -48.5% | 134,432 | $2.29M | Q1 2026 | May 15, 2026 |
| Citadel Advisors Llc | Sell | -116,436 | -75.6% | 37,516 | $637.77K | Q1 2026 | May 15, 2026 |
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.
Related GLDD Institutional Insights
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