| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| GROUP ONE TRADING, L.P. | 4 | 1 | 0.00% | 0.00% | 0.03% | Q2 2013 | Q3 2021 | 21 |
| SIMPLEX TRADING, LLC | 9 | 2 | 0.00% | 0.00% | 0.00% | Q1 2016 | Q1 2022 | 17 |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 15 | 15 | 0.00% | 0.00% | 0.00% | Q3 2018 | Q1 2022 | 15 |
| Citadel Advisors | 3 | 1 | 0.00% | 0.00% | 0.00% | Q2 2013 | Q4 2015 | 7 |
This page lists all the filers that currently own FERRO CORP or have owned FERRO CORP in the past.