Great Lakes Dredge & Dock CORP GLDD
CIK 0001372020 · CUSIP 390607109
Quarter-end disclosures, not live holdings.
Top 20 institutions
Weight means this stock's share of the manager's own portfolio.
| # | Manager | Value | Manager weight | Change vs prior | Source | |
|---|---|---|---|---|---|---|
| 01 | BlackRock Inc. CIK 1364742 · View history | $60.69M 6,912,486 shares | 0.00% | +285.33K(+4.30%)Added | SEC filing ↗ Aug 13, 2024 | ▾ |
| 02 | DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history | $38.96M 4,437,772 shares | 0.01% | -11.02K(-0.20%)Reduced | SEC filing ↗ Aug 9, 2024 | ▾ |
| 03 | JENNISON ASSOCIATES LLC CIK 53417 · View history | $37.35M 4,254,351 shares | 0.02% | -105.37K(-2.40%)Reduced | SEC filing ↗ Aug 5, 2024 | ▾ |
| 04 | ALLIANCEBERNSTEIN L.P. CIK 1109448 · View history | $34.93M 3,978,436 shares | 0.01% | -545.30K(-12.10%)Reduced | SEC filing ↗ Aug 14, 2024 | ▾ |
| 05 | VANGUARD GROUP INC CIK 102909 · View history | $31.36M 3,571,826 shares | 0.00% | +158.15K(+4.60%)Added | SEC filing ↗ Aug 13, 2024 | ▾ |
| 06 | Harvey Partners, LLC CIK 1406484 · View history | $29.17M 3,322,000 shares | 3.61% | -97.00K(-2.80%)Reduced | SEC filing ↗ Aug 14, 2024 | ▾ |
| 07 | WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC CIK 1644956 · View history | $21.46M 2,444,361 shares | 0.06% | -713(0.00%)Reduced | SEC filing ↗ Aug 8, 2024 | ▾ |
| 08 | TCW GROUP INC CIK 850401 · View history | $17.53M 1,996,138 shares | 0.16% | +38.20K(+2.00%)Added | SEC filing ↗ Jul 19, 2024 | ▾ |
| 09 | GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history | $13.52M 1,539,731 shares | 0.00% | +65.37K(+4.40%)Added | SEC filing ↗ Aug 9, 2024 | ▾ |
| 10 | STATE STREET CORP CIK 93751 · View history | $13.41M 1,527,506 shares | 0.00% | -1.46K(-0.10%)Reduced | SEC filing ↗ Aug 14, 2024 | ▾ |
| 11 | Minerva Advisors LLC CIK 1541536 · View history | $11.60M 1,322,337 shares | 7.73% | +10.19K(+0.80%)Added | SEC filing ↗ Aug 12, 2024 | ▾ |
| 12 | PRIVATE MANAGEMENT GROUP INC CIK 1142031 · View history | $11.00M 1,253,165 shares | 0.42% | +35.08K(+2.90%)Added | SEC filing ↗ Aug 6, 2024 | ▾ |
| 13 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC CIK 884546 · Amended · View history | $8.37M 953,735 shares | 0.00% | -110.33K(-10.40%)Reduced | SEC filing ↗ Aug 12, 2024 | ▾ |
| 14 | MORGAN STANLEY CIK 895421 · Amended · View history | $7.87M 896,261 shares | 0.00% | +445.37K(+98.80%)Added | SEC filing ↗ May 14, 2025 | ▾ |
| 15 | D. E. Shaw & Co., Inc. CIK 1009207 · View history | $7.24M 824,091 shares | 0.01% | -6.48K(-0.80%)Reduced | SEC filing ↗ Aug 14, 2024 | ▾ |
| 16 | KENNEDY CAPITAL MANAGEMENT LLC CIK 884589 · View history | $5.88M 669,140 shares | 0.13% | -130.06K(-16.30%)Reduced | SEC filing ↗ Aug 14, 2024 | ▾ |
| 17 | CenterBook Partners LP CIK 1872738 · View history | $5.72M 651,975 shares | 0.36% | +135.87K(+26.30%)Added | SEC filing ↗ Aug 12, 2024 | ▾ |
| 18 | LONDON CO OF VIRGINIA CIK 1259887 · View history | $5.64M 642,744 shares | 0.03% | 0(0.00%)Unchanged | SEC filing ↗ Aug 14, 2024 | ▾ |
| 19 | WELLINGTON MANAGEMENT GROUP LLP CIK 902219 · View history | $5.32M 606,408 shares | 0.00% | -156.22K(-20.50%)Reduced | SEC filing ↗ Aug 14, 2024 | ▾ |
| 20 | NORTHERN TRUST CORP CIK 73124 · View history | $5.12M 583,499 shares | 0.00% | -19.09K(-3.20%)Reduced | SEC filing ↗ Aug 14, 2024 | ▾ |
Showing 20 / 171 institutions. The complete set is available through the API.
Coverage & totals by quarter
Reporting institutions by quarter
Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.
Explore all 171 reporting institutions.
This page includes 20 of 171 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.
- Download CSV
- Earlier quarters
- Advanced screening & filtering
- API & AI access
＋ New accounts get free API credits to explore data beyond ownership filings.
For AI agents & developers
The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 20 of 171 reporting institutions; totals use the complete disclosed data.
Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP / CLI.
MCP https://api.akkrudata.ai/mcp
akkru_institutional_holdings
{"action":"holders","cusip":"390607109","quarter":"2024Q2","type":"positions","page_size":100}Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.
- MCP endpoint
- https://api.akkrudata.ai/mcp
- API / MCP / CLI documentation
- /documents
- llms.txt
- /llms.txt
Sources, coverage & how to read this data
Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.