| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| SIMPLEX TRADING, LLC | 18 | 1 | 0.00% | 0.00% | 0.00% | Q1 2016 | Q1 2023 | 25 |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 21 | 21 | 0.00% | 0.00% | 0.00% | Q3 2018 | Q3 2023 | 21 |
| GROUP ONE TRADING, L.P. | 7 | 2 | 0.00% | 0.00% | 0.00% | Q2 2013 | Q3 2023 | 14 |
| Citadel Advisors | 5 | 4 | 0.00% | 0.00% | 0.00% | Q3 2013 | Q4 2015 | 9 |
This page lists all the filers that currently own OLYMPIC STEEL INC or have owned OLYMPIC STEEL INC in the past.