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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- Type / Class
- Equity / Common Stock
- Symbol
- GLDD
- Shares outstanding
- 66,399,451
- Price per share
- $17.00
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 54,783,865
- Total reported value
- $930,985,903
- % of total 13F portfolios
- 0.01%
- Share change
- -165,284
- Value change
- +$35,664,660
- Number of holders
- 181
- Price from insider filings
- $17.00
Reported Shares, Excluding Options vs Price
Reported 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.
- 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:
Significant Owners of Great Lakes Dredge & Dock CORP - Common Stock (GLDD) based on Schedule 13D/G filings
| 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.
Top 25 Institutional Shareholders
The largest institutional shareholders of Great Lakes Dredge & Dock CORP - Common Stock (GLDD) together control 63% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| 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 |
Institutional Holders of Great Lakes Dredge & Dock CORP - Common Stock (GLDD) across Reporting Periods
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 54,783,865 | $930,985,903 | +$35,664,660 | $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 |
| 2019 Q4 | 56,700,584 | $642,434,486 | +$12,541,518 | $11.33 | 162 |
| 2019 Q3 | 55,963,970 | $584,812,650 | +$14,041,263 | $10.45 | 168 |
| 2019 Q2 | 54,509,692 | $601,402,366 | +$33,346,963 | $11.04 | 164 |
| 2019 Q1 | 51,841,990 | $461,892,300 | +$32,260,126 | $8.91 | 146 |
| 2018 Q4 | 48,470,603 | $320,886,768 | +$2,924,041 | $6.62 | 122 |
| 2018 Q3 | 47,582,318 | $294,922,390 | +$4,249,212 | $6.20 | 94 |
| 2018 Q2 | 44,747,532 | $234,915,740 | -$8,276,466 | $5.25 | 95 |
| 2018 Q1 | 48,559,259 | $223,314,104 | +$6,170,833 | $4.60 | 93 |
| 2017 Q4 | 46,993,765 | $253,769,146 | +$16,059,374 | $5.40 | 98 |
| 2017 Q3 | 44,343,916 | $215,122,339 | +$3,359,473 | $4.85 | 96 |
| 2017 Q2 | 44,053,725 | $189,376,558 | +$2,126,040 | $4.30 | 93 |
| 2017 Q1 | 43,571,555 | $174,321,292 | +$12,079,193 | $4.00 | 90 |
| 2016 Q4 | 44,343,496 | $186,346,386 | -$14,091,217 | $4.20 | 99 |
| 2016 Q3 | 47,378,954 | $165,803,544 | -$7,192,756 | $3.50 | 85 |
| 2016 Q2 | 49,026,814 | $213,757,338 | -$1,477,186 | $4.36 | 90 |
| 2016 Q1 | 49,417,026 | $220,546,061 | -$6,725,401 | $4.46 | 91 |
| 2015 Q4 | 50,947,756 | $201,803,782 | -$2,758,611 | $3.96 | 96 |
| 2015 Q3 | 50,797,223 | $256,026,194 | -$6,179,998 | $5.04 | 92 |
| 2015 Q2 | 51,808,490 | $308,782,909 | -$1,669,109 | $5.96 | 91 |
| 2015 Q1 | 51,682,746 | $310,606,558 | +$616,681 | $6.01 | 104 |
| 2014 Q4 | 52,901,241 | $452,622,950 | +$24,245,470 | $8.56 | 108 |
| 2014 Q3 | 50,510,234 | $312,158,769 | -$2,690,286 | $6.18 | 116 |
| 2014 Q2 | 50,352,829 | $402,205,633 | -$27,874,251 | $7.99 | 109 |
| 2014 Q1 | 51,732,111 | $472,233,706 | -$16,024,738 | $9.13 | 110 |