Great Lakes Dredge & DockGLDD
13F holders, Q1 2026 (March 31)182holders −40
50new positions
88sold out
8famous investors
$16.99avg. 13F price*
At the end of Q1 2026, 182 institutions reported holding Great Lakes Dredge & Dock Co. (GLDD) in their 13F filings, down 40 from Q4 2025. 50 opened new positions and 88 sold out. The largest holders were BlackRock, Inc. ($100.6M), Dimensional Fund Advisors LP ($57.6M) and American Century Companies Inc. ($51.1M). 8 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio), Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Mario Gabelli (0.0% of GAMCO Investors's portfolio).
- Company
- Great Lakes Dredge & Dock Co.
- CUSIP
- 390607109
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 50 | $298.0M |
| Exits | 88 | $126.5M |
All 13F filers, Q4 2025 → Q1 2026: 21,899,722 shares bought and 22,184,665 shares sold, net −284,943 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 182 holders
| BlackRock, Inc. | 0.00% | Reduce -14.2% | 5,917,589 | $100.6M |
| Dimensional Fund Advisors LP | 0.01% | Reduce -21.3% | 3,386,372 | $57.6M |
| American Century Companies Inc. | 0.03% | Add +16.3% | 3,006,419 | $51.1M |
| Glazer Capital, LLC | 1.11% | New | 2,949,613 | $50.1M |
| Vanguard Capital Management LLC | 0.00% | — | 2,856,158 | $48.6M |
| FIL Ltd | 0.04% | New | 2,671,231 | $45.4M |
| Two Sigma Investments, LP | 0.03% | Add +248.6% | 1,989,521 | $33.8M |
| Geode Capital Management, LLC | 0.00% | Add +2.9% | 1,678,166 | $28.5M |
| Balyasny Asset Management L.P. | 0.06% | New | 1,626,990 | $27.7M |
| State Street Corp. | 0.00% | Reduce -0.7% | 1,577,722 | $26.8M |
| Qube Research & Technologies Ltd | 0.03% | Add +119.6% | 1,383,585 | $23.5M |
| Water Island Capital LLC | 3.02% | New | 1,263,580 | $21.5M |
| Oddo BHF Asset Management Sas | 0.79% | New | 1,166,388 | $19.8M |
| Millennium Management | 0.02% | Reduce -29.2% | 1,131,127 | $19.2M |
| Arrowstreet Capital, Limited Partnership | 0.01% | Add +32.4% | 1,054,360 | $17.9M |
| Minerva Advisors LLC | 11.30% | Reduce -25.9% | 1,029,703 | $17.5M |
| Jennison Associates LLC | 0.01% | Reduce -73.0% | 1,029,264 | $17.5M |
| Beryl Capital Management LLC | 14.28% | New | 912,537 | $15.5M |
| Sand Grove Capital Management LLP | 3.55% | New | 893,190 | $15.2M |
| OMERS ADMINISTRATION Corp | 0.09% | New | 864,000 | $14.7M |
| Goldman Sachs Group Inc. | 0.00% | Add +35.3% | 858,621 | $14.6M |
| AQR Arbitrage LLC | 0.24% | New | 730,615 | $12.4M |
| Northern Trust Corp. | 0.00% | Add +5.1% | 669,478 | $11.4M |
| TIG Advisors, LLC | 0.52% | New | 642,867 | $10.9M |
| Harvey Partners, LLC | 0.84% | Reduce -83.5% | 610,000 | $10.4M |
| London Co. of Virginia | 0.06% | No change | 584,424 | $9.9M |
| Squarepoint Ops LLC | 0.02% | Add +52.7% | 584,315 | $9.9M |
| Prescott Group Capital Management, L.L.C. | 0.98% | No change | 576,870 | $9.8M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +0.7% | 558,012 | $9.5M |
| Gabelli Funds LLC | 0.06% | New | 505,543 | $8.6M |
| Cinctive Capital Management LP | 0.56% | New | 500,000 | $8.5M |
| Vanguard Portfolio Management LLC | 0.00% | — | 462,923 | $7.9M |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 434,518 | $7.4M |
| First Trust Capital Management L.P. | 0.39% | New | 434,061 | $7.4M |
| Schonfeld Strategic Advisors LLC | 0.06% | Add +1070.3% | 433,667 | $7.4M |
| Renaissance Technologies | 0.01% | Add +47.5% | 381,700 | $6.5M |
| Morgan Stanley | 0.00% | Reduce -67.7% | 329,163 | $5.6M |
| Sanctuary Advisors, LLC | 0.03% | Reduce -7.1% | 305,240 | $5.2M |
| HRT Financial LP | 0.01% | Add +108.5% | 276,423 | $4.7M |
| Lazard Asset Management LLC | 0.01% | Add +19.1% | 269,389 | $4.6M |
| Franklin Resources Inc. | 0.00% | New | 267,116 | $4.5M |
| Prelude Capital Management, LLC | 0.33% | New | 255,852 | $4.3M |
| Bank of New York Mellon Corp | 0.00% | Reduce -2.4% | 253,954 | $4.3M |
| GABELLI & Co INVESTMENT ADVISERS, INC. | 0.64% | New | 253,695 | $4.3M |
| JPMorgan Chase & Co. | 0.00% | Reduce -66.3% | 225,360 | $3.8M |
| Voloridge Investment Management, LLC | 0.01% | New | 208,184 | $3.5M |
| Polar Asset Management Partners Inc. | 0.11% | New | 200,000 | $3.4M |
| Prudential Financial Inc. | 0.00% | New | 190,030 | $3.2M |
| Wolverine Asset Management LLC | 0.16% | New | 175,708 | $3.0M |
| Bank of America Corp. | 0.00% | Reduce -47.6% | 173,986 | $3.0M |
| Nuveen, LLC | 0.00% | Reduce -0.9% | 150,195 | $2.6M |
| Y-Intercept (Hong Kong) Ltd | 0.05% | Reduce -33.4% | 142,229 | $2.4M |
| AQR Capital Management | 0.00% | Reduce -48.5% | 134,432 | $2.3M |
| Swiss National Bank | 0.00% | No change | 134,200 | $2.3M |
| UBS Group AG | 0.00% | Add +106.9% | 129,581 | $2.2M |
| Groupe la Francaise | 0.03% | New | 128,598 | $2.2M |
| Oxford Asset Management LLP | 0.84% | New | 121,883 | $2.1M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Reduce -7.8% | 112,529 | $1.9M |
| Russell Investments Group, Ltd. | 0.00% | Reduce -26.6% | 101,821 | $1.7M |
| Versor Investments LP | 4.23% | New | 101,631 | $1.7M |
| Credit Agricole S A | 0.01% | Add +13.1% | 100,000 | $1.7M |
| D. E. Shaw & Co. | 0.00% | Reduce -77.8% | 92,353 | $1.6M |
| California State Teachers Retirement System | 0.00% | Add +47.0% | 91,090 | $1.5M |
| Rhumbline Advisers | 0.00% | Reduce -1.7% | 87,855 | $1.5M |
| HB Wealth Management, LLC | 0.01% | Reduce -1.0% | 87,752 | $1.5M |
| Principal Financial Group Inc. | 0.00% | Add +6.7% | 84,439 | $1.4M |
| Victory Capital Management Inc. | 0.00% | Reduce -14.4% | 77,000 | $1.3M |
| Boothbay Fund Management, LLC | 0.03% | Add +433.4% | 74,860 | $1.3M |
| Susquehanna Portfolio Strategies, LLC | 0.02% | No change | 70,586 | $1.2M |
| Credit Industriel Et Commercial | 0.21% | New | 69,245 | $1.2M |
| Deutsche Bank AG | 0.00% | Reduce -50.2% | 63,138 | $1.1M |
| Legal & General Group Plc | 0.00% | Reduce -7.7% | 62,273 | $1.1M |
| Creative Planning | 0.00% | Add +3.7% | 53,784 | $914K |
| Marshall Wace, LLP | 0.00% | New | 52,085 | $885K |
| T. Rowe Price Associates Inc. | 0.00% | Add +24.7% | 50,000 | $850K |
| State of Wisconsin Investment Board | 0.00% | Reduce -30.1% | 49,960 | $849K |
| VANGUARD ASSET MANAGEMENT, Ltd | 0.00% | — | 48,470 | $824K |
| Invesco Ltd. | 0.00% | Reduce -59.9% | 47,937 | $815K |
| Alliancebernstein L.P. | 0.00% | Reduce -2.9% | 61,340 | $805K |
| CSS LLC | 0.13% | New | 46,900 | $797K |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.00% | Add +47.7% | 46,099 | $784K |
| VARCOV Co. | 0.28% | Add +177.4% | 43,681 | $743K |
| Canada Pension Plan Investment Board | 0.00% | Reduce -2.8% | 41,900 | $712K |
| Citadel Advisors | 0.00% | Reduce -75.6% | 37,516 | $638K |
| Intech Investment Management LLC | 0.01% | Add +20.3% | 37,277 | $634K |
| Wells Fargo & Company | 0.00% | Reduce -58.4% | 35,282 | $600K |
| Canton Hathaway, LLC | 0.12% | Reduce -25.1% | 35,000 | $595K |
| Gotham Asset Management | 0.00% | New | 34,598 | $588K |
| MetLife Investment Management, LLC | 0.00% | Reduce -1.8% | 34,468 | $586K |
| State of Wyoming | 0.07% | Reduce -21.7% | 34,385 | $585K |
| Barclays PLC | 0.00% | Reduce -76.8% | 32,318 | $549K |
| Susquehanna Fundamental Investments, LLC | 0.02% | New | 32,070 | $545K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +0.9% | 31,198 | $530K |
| ProShare Advisors LLC | 0.00% | Add +156.0% | 31,149 | $530K |
| Point72 Asset Management | 0.00% | Reduce -91.1% | 30,557 | $519K |
| Alps Advisors Inc. | 0.00% | Reduce -23.1% | 29,271 | $498K |
| Cullen Capital Management, LLC | 0.01% | Reduce -61.2% | 28,963 | $492K |
| Brooklyn Investment Group | 0.02% | New | 28,861 | $491K |
| Systematic Alpha Investments, LLC | 0.02% | No change | 28,600 | $486K |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0.00% | Reduce -58.3% | 28,280 | $481K |
"% of holder's portfolio" is GLDD's weight in each manager's 13F, not the share of Great Lakes Dredge & Dock Co. the manager owns.