Institutional Ownership
Great Lakes Dredge & Dock Co
CUSIP 390607109COMGLDDQ1 2026
13D / 13G Filings
43
Schedule 13D/13G on record
Beneficial Filers
13
Distinct reporting persons
Largest Stake
11.1%
Max % of class reported
Institutional Holders
175
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
43 filings · latest Mar 4, 2026
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Mar 4, 2026 | Blackrock, Inc. | 13G/A | 10.0% | 6.70M | SEC |
| 2 | Nov 7, 2025 | Prudential Financial Inc | 13G/A | 6.3% | 4.29M | SEC |
| 3 | Nov 5, 2025 | Jennison Associates LLC | 13G/A | 6.3% | 4.27M | SEC |
| 4 | May 15, 2025 | Prudential Financial Inc | 13G/A | 7.9% | 5.33M | SEC |
| 5 | May 9, 2025 | Jennison Associates LLC | 13G/A | 7.9% | 46.20M | SEC |
| 6 | Apr 24, 2025 | Blackrock, Inc. | 13G/A | 9.9% | 6.71M | SEC |
| 7 | Feb 5, 2025 | Alliancebernstein L.P. | 13G/A | 4.3% | 2.87M | SEC |
| 8 | Nov 15, 2024 | Alliancebernstein L.P. | 13G/A | 5.8% | 3.89M | SEC |
| 9 | Feb 14, 2024 | Alliancebernstein L.P. | 13G/A | 6.9% | 4.60M | SEC |
| 10 | Feb 14, 2024 | Harvey Partners, LLC | 13G/A | 5.1% | 3.42M | SEC |
33 more beneficial-ownership filings on Premium
See the full Schedule 13D/13G history for Great Lakes Dredge & Dock Co.
Unlock full historyTop Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Blackrock, Inc. | 5.92M | $100.60M |
| 2 | Dimensional Fund Advisors LP | 3.39M | $57.57M |
| 3 | American Century Companies Inc | 3.01M | $51.11M |
| 4 | Fil Ltd | 2.67M | $45.41M |
| 5 | Two Sigma Investments, LP | 1.99M | $33.82M |
| 6 | Geode Capital Management, LLC | 1.68M | $28.53M |
| 7 | Balyasny Asset Management L.P. | 1.63M | $27.66M |
| 8 | State Street Corp | 1.58M | $26.82M |
| 9 | Qube Research & Technologies Ltd | 1.38M | $23.52M |
| 10 | Water Island Capital LLC | 1.26M | $21.48M |