Latest Period
Q1 2026
Security Snapshot
Great Lakes Dredge & Dock CORP - Common Stock (GLDD) Institutional Ownership
CUSIP: 390607109
13F Institutional Holders and Ownership History from Q1 2014 to Q1 2026
Institutions Reporting
181
Shares (Excl. Options)
54,783,865
Price
$17.00
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- Security type / class
- Equity / Common Stock
- Symbol
- GLDD
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 54,783,865
- Total 13F value
- $930,985,903
- Portfolio coverage rank
- 0.01%
- Share change
- -185,571
- Value change
- +$35,398,494
- Number of holders
- 181
- Shares outstanding
- 66,399,451
- SEC-reported price per share
- $17.00
- Insider filing price
- $17.00
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- GLDD - Great Lakes Dredge & Dock CORP - Common Stock is tracked under CUSIP 390607109.
- 181 institutions reported positions in Q1 2026.
- 5 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 222 to 181 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $734,802,715 to $930,985,903.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 181 institutions filings for Q1 2026.
Security key
390607109
Latest holder period
Q1 2026
13F holders
181
13D/G owners
5
CIK / CUSIP context first
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 390607109:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
5
Security
GLDD
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 10% | +0.5% | $99,186,803 | -$95,297 | 6,701,811 | -0.1% | BlackRock, Inc. | 28 Feb 2026 |
| PRUDENTIAL FINANCIAL INC | 6.3% | -20% | $51,484,209 | -$12,403,319 | 4,293,929 | -19% | PRUDENTIAL FINANCIAL INC | 30 Sep 2025 |
| JENNISON ASSOCIATES LLC | 6.3% | -20% | $51,248,473 | -$12,429,146 | 4,274,268 | -20% | Jennison Associates LLC | 30 Sep 2025 |
| DIMENSIONAL FUND ADVISORS LP | 5.1% | $57,568,324 | 3,386,372 | Dimensional Fund Advisors LP | 31 Mar 2026 | |||
| ALLIANCEBERNSTEIN L.P. | 4.3% | -25% | $26,253,687 | -$9,369,141 | 2,866,123 | -26% | AllianceBernstein L.P. | 31 Dec 2024 |
As of 31 Mar 2026, 181 institutional investors reported holding 54,783,865 shares of Great Lakes Dredge & Dock CORP - Common Stock (GLDD). This represents 83% of the company’s total 66,399,451 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
63%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 8.9% | 5,917,589 | -14% | 0% | $100,599,013 |
| DIMENSIONAL FUND ADVISORS LP | 5.1% | 3,386,372 | -21% | 0.01% | $57,568,951 |
| AMERICAN CENTURY COMPANIES INC | 4.5% | 3,006,419 | +16% | 0.03% | $51,109,123 |
| GLAZER CAPITAL, LLC | 4.4% | 2,949,613 | 1.1% | $50,143,000 | |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.3% | 2,856,158 | 0% | 0% | $48,554,686 |
| FIL Ltd | 4% | 2,671,231 | 0.04% | $45,410,927 | |
| TWO SIGMA INVESTMENTS, LP | 3% | 1,989,521 | +249% | 0.03% | $33,821,857 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.5% | 1,678,166 | +2.9% | 0% | $28,534,039 |
| Balyasny Asset Management L.P. | 2.5% | 1,626,990 | 0.05% | $27,658,830 | |
| STATE STREET CORP | 2.4% | 1,577,722 | -0.73% | 0% | $26,821,274 |
| Qube Research & Technologies Ltd | 2.1% | 1,383,585 | +120% | 0.03% | $23,520,945 |
| WATER ISLAND CAPITAL LLC | 1.9% | 1,263,580 | 2.9% | $21,480,860 | |
| ODDO BHF ASSET MANAGEMENT SAS | 1.8% | 1,166,388 | 0.79% | $19,828,596 | |
| MILLENNIUM MANAGEMENT LLC | 1.7% | 1,131,127 | -29% | 0.01% | $19,229,159 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 1.6% | 1,054,360 | +32% | 0.01% | $17,924,120 |
| Minerva Advisors LLC | 1.6% | 1,029,703 | -26% | 11% | $17,504,951 |
| JENNISON ASSOCIATES LLC | 1.6% | 1,029,264 | -73% | 0.01% | $17,497,488 |
| Beryl Capital Management LLC | 1.4% | 912,537 | 14% | $15,513,129 | |
| Sand Grove Capital Management LLP | 1.3% | 893,190 | 3.6% | $15,184,230 | |
| OMERS ADMINISTRATION Corp | 1.3% | 864,000 | 0.09% | $14,688,000 | |
| GOLDMAN SACHS GROUP INC | 1.3% | 858,621 | +35% | 0% | $14,596,557 |
| AQR Arbitrage LLC | 1.1% | 730,615 | 0.2% | $12,420,455 | |
| NORTHERN TRUST CORP | 1% | 669,478 | +5.1% | 0% | $11,381,126 |
| TIG Advisors, LLC | 0.97% | 642,867 | 0.52% | $10,928,739 | |
| Harvey Partners, LLC | 0.92% | 610,000 | -84% | 0.84% | $10,370,000 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
49
Latest
Q1 2026
Rows shown
1-25 of 49
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 54,783,865 | $930,985,903 | +$35,398,494 | $17.00 | 181 |
| 2025 Q4 | 55,970,048 | $734,802,715 | +$12,325,820 | $13.12 | 222 |
| 2025 Q3 | 54,867,176 | $657,811,593 | +$92,425 | $11.99 | 211 |
| 2025 Q2 | 54,577,452 | $665,209,845 | -$6,488,667 | $12.19 | 188 |
| 2025 Q1 | 55,352,230 | $481,638,963 | +$1,594,398 | $8.70 | 188 |
| 2024 Q4 | 55,648,749 | $628,220,932 | +$4,908,777 | $11.29 | 190 |
| 2024 Q3 | 54,708,548 | $576,207,284 | +$6,824,359 | $10.53 | 179 |
| 2024 Q2 | 54,196,204 | $475,459,698 | +$7,255,252 | $8.78 | 168 |
| 2024 Q1 | 53,411,514 | $467,342,102 | -$18,608,390 | $8.75 | 155 |
| 2023 Q4 | 55,563,972 | $426,728,886 | +$2,857,537 | $7.68 | 141 |
| 2023 Q3 | 55,821,683 | $444,809,416 | -$2,038,683 | $7.97 | 146 |
| 2023 Q2 | 54,625,138 | $445,716,562 | -$6,670,318 | $8.16 | 131 |
| 2023 Q1 | 55,911,308 | $303,541,924 | -$6,206,652 | $5.43 | 138 |
| 2022 Q4 | 57,617,400 | $342,817,395 | -$8,113,503 | $5.95 | 143 |
| 2022 Q3 | 58,419,876 | $442,881,389 | +$5,783,208 | $7.58 | 133 |
| 2022 Q2 | 56,736,367 | $743,854,024 | -$6,654,705 | $13.11 | 129 |
| 2022 Q1 | 57,219,956 | $802,966,432 | -$7,544,605 | $14.03 | 135 |
| 2021 Q4 | 57,600,857 | $905,489,476 | -$15,113,519 | $15.72 | 127 |
| 2021 Q3 | 57,917,217 | $873,966,202 | +$59,386,326 | $15.09 | 122 |
| 2021 Q2 | 57,194,029 | $835,581,752 | +$23,961,306 | $14.61 | 131 |
| 2021 Q1 | 55,578,762 | $810,681,893 | +$10,042,797 | $14.58 | 141 |
| 2020 Q4 | 55,334,010 | $728,871,426 | +$14,392,117 | $13.17 | 140 |
| 2020 Q3 | 54,430,102 | $517,728,625 | -$15,655,132 | $9.51 | 148 |
| 2020 Q2 | 56,085,851 | $519,140,597 | -$6,496,675 | $9.26 | 149 |
| 2020 Q1 | 57,051,624 | $473,387,962 | +$614,979 | $8.30 | 154 |