| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| GROUP ONE TRADING, L.P. | 8 | 1 | 0.00% | 0.00% | 0.02% | Q2 2013 | Q2 2024 | 28 |
| SIMPLEX TRADING, LLC | 14 | 1 | 0.00% | 0.00% | 0.00% | Q4 2014 | Q2 2024 | 27 |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 24 | 24 | 0.00% | 0.00% | 0.00% | Q3 2018 | Q2 2024 | 24 |
This page lists all the filers that currently own GREAT LAKES DREDGE & DOCK CO or have owned GREAT LAKES DREDGE & DOCK CO in the past.