Great Lakes Dredge & Dock Corporation
US ˙ NasdaqGS ˙ US3906071093
DETTE SYMBOL ER IKKE LÆNGERE AKTIVT

SecurityGLDD / Great Lakes Dredge & Dock Corporation
InstitutionHantz Financial Services, Inc.
Latest Disclosed Ownership37 shares
Latest Disclosed Value $ 1
Hantz Financial Services, Inc. reports 43.08% decrease in ownership of GLDD / Great Lakes Dredge & Dock Corporation

On May 1, 2026 - Hantz Financial Services, Inc. filed a 13F-HR form disclosing ownership of 37 shares of Great Lakes Dredge & Dock Corporation (US:GLDD) valued at $629 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 65 shares of Great Lakes Dredge & Dock Corporation. The current value of the position is $629 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-01 2026-03-31 13F GREAT LAKES DREDGE & DOCK USD 390607109 37 -28 -43.08 0 0.0000
2026-02-09 2025-12-31 13F GREAT LAKES DREDGE & DOCK USD 390607109 65 0 0.00 0 0.0000
2025-11-05 2025-09-30 13F GREAT LAKES DREDGE & DOCK USD 390607109 65 0 0.00 0 0.0000
2025-08-04 2025-06-30 13F GREAT LAKES DREDGE & DOCK USD 390607109 65 0 0.00 0 0.0000
2025-05-12 2025-03-31 13F GREAT LAKES DREDGE & DOCK USD 390607109 65 0 0.00 0 0.0000
2025-01-23 2024-12-31 13F GREAT LAKES DREDGE & DOCK USD 390607109 65 0 0.00 0 0.0000
2024-11-14 2024-09-30 13F GREAT LAKES DREDGE & DOCK USD 390607109 65 -6 -8.45 0 0.0000
2024-07-30 2024-06-30 13F GREAT LAKES DREDGE & DOCK USD 390607109 71 0 0.00 0 -100.00 0.0000
2024-08-06 2024-03-31 13F/A GREAT LAKES DREDGE & DOCK USD 390607109 71 0 0.00 0 0.0000
2024-08-06 2023-12-31 13F/A GREAT LAKES DREDGE & DOCK USD 390607109 71 0 0.00 0 0.0000
2024-08-06 2023-09-30 13F/A GREAT LAKES DREDGE & DOCK USD 390607109 71 0 0.00 0 0.0000
2024-08-06 2023-06-30 13F/A GREAT LAKES DREDGE & DOCK USD 390607109 71 -31 -30.39 0 0.0000
2024-08-06 2023-03-31 13F/A GREAT LAKES DREDGE & DOCK USD 390607109 102 -46,759 -99.78 0 0.0000
2024-08-06 2022-12-31 13F/A GREAT LAKES DREDGE & DOCK USD 390607109 46,861 -31,082 -39.88 0 0.0084
2024-08-06 2022-09-30 13F/A GREAT LAKES DREDGE & DOCK USD 390607109 77,943 -23,902 -23.47 1 -100.00 0.0204
2024-08-06 2022-06-30 13F/A GREAT LAKES DREDGE & DOCK USD 390607109 101,845 6,436 6.75 1 0.00 0.0451
2024-08-06 2022-03-31 13F/A GREAT LAKES DREDGE & DOCK USD 390607109 95,409 7,918 9.05 1 0.00 0.0395
2024-08-06 2021-12-31 13F/A GREAT LAKES DREDGE & DOCK USD 390607109 87,491 10,557 13.72 1 0.00 0.0396
2024-08-06 2021-09-30 13F/A GREAT LAKES DREDGE & DOCK USD 390607109 76,934 23,262 43.34 1 0.0380
2024-08-06 2021-06-30 13F/A GREAT LAKES DREDGE & DOCK USD 390607109 53,672 53,672 1 0.0288
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.